A gorgeous late winter’s day in Thornton. (LE Worley)
The month of March is the start of meteorological spring and while conditions do begin warming, winter weather is certainly out of the question. From hot to cold, snow to rain, the conditions can be very conducive to great pictures as we see in our slideshow.
March in Denver typically means frequent and rapid weather changes. The days grow longer and we start enjoying more sunshine and sometimes summer-like weather. However, on occasion arctic air masses can still force their way south into Colorado dropping temperatures quickly and markedly.
With the active wildlife, increased outdoor activities by us humans, and of course the weather, March imagery contains a wide variety of subjects and extremes.
Slideshow updated March 31, 2018. To learn more about how to send your photo to us for inclusion in the slideshow, see below the slideshow.
Showcasing images captured by ThorntonWeather.com readers as well as some of our own, our monthly slideshow covers the entire gamut of weather-related imagery.
Sunsets, sunrises, wildlife and of course every type of weather condition are vividly depicted in images captured from yours and our cameras.
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What is missing in the slideshow above? Your photo!
Our monthly photo slideshow is going to feature images that we have taken but more importantly images that you have captured. The photos can be of anything even remotely weather-related.
Landscapes, current conditions, wildlife, pets, kids. Whimsical, newsy, artsy. Taken at the zoo, some other area attraction, a local park, a national park or your backyard. You name it, we want to see and share it!
Images can be taken in Thornton, Denver or anywhere across the extraordinary Centennial State. We’ll even take some from out of state if we can tie it to Colorado somehow.
We’ll keep the criteria very open to interpretation with just about any image eligible to be shown in our slideshows.
What do you win for having your image in our slideshow? We are just a ‘mom and pop’ outfit and make no money from our site so we really don’t have the means to provide prizes. However you will have our undying gratitude and the satisfaction that your images are shared on the most popular website in Thornton.
To share you images with us and get them included in the slideshow just email them to us or share them with ThorntonWeather.com on any of the various social media outlets. Links are provided below.
March 25 to March 31: This week in Denver weather history
March is one of our snowiest months and our look back at this week in Denver weather history shows a number of notable snowfall events.
From the National Weather Service:
23-25
In 1891…rain changed to snow and totaled 8.8 inches in downtown Denver. Most of the snow fell on the 24th. Winds were light.
In 1964…heavy snowfall of 5.8 inches was measured at Stapleton International Airport. North-northeast winds gusted to 21 mph behind a cold front.
24-25
In 1904…west Bora winds sustained to 40 mph with gusts to 55 mph warmed the temperature to a high of 49 degrees on the 24th. Overnight…a cold front produced 4.5 inches of snow. The high temperature was only 34 degrees on the 25th.
In 1955…a vigorous cold front with winds sustained to 34 mph and gusts to 39 mph briefly reduced the visibility to 2 miles in blowing dust at Stapleton Airport. Post-frontal heavy snowfall totaled 9.5 inches at Stapleton Airport where the maximum snow depth on the ground was 7 inches.
24-26
In 1959…the second major spring storm in less than a week dumped 10 to 20 inches of wet snow across northeastern Colorado. Snowfall totaled 14.3 inches at Stapleton Airport where north winds gusted to 36 mph…causing near- blizzard conditions with visibilities frequently reduced to 1/2 mile in snow and blowing snow. Many travelers were marooned when trains…planes…and buses were unable to make their schedules. Utility lines were again damaged as a result of the storm.
25
In 1874…the wind blowing in gusts from the west-northwest filled the air with dust so dense that only the houses in the immediate neighborhood of the weather station could be recognized. The brisk winds continued through the afternoon.
In 1886…heavy snowfall of 6.5 inches occurred in the city.
In 1896…northwest winds sustained to 58 mph with gusts to 65 mph warmed the temperature to a high of 70 degrees.
In 1911…west winds were sustained to 43 mph. The Chinook winds warmed the temperature to a high of 65 degrees.
In 1925…northwest winds were sustained to 41 mph with gusts to 46 mph.
In 1950…strong Chinook winds gusted to 50 mph at Stapleton Airport.
In 1976…3.4 inches of snow fell at Stapleton International Airport where northeast winds gusted to 46 mph. The strong winds at 20 to 35 mph all day produced a rare “snirt” storm when blowing dust and dirt became mixed with snow and blowing snow reducing the visibility to as low as 1/4 mile at Stapleton International Airport.
In 1984…1 to 4 inches of new snow fell across metro Denver. Icy roads contributed to many accidents. The most hazardous conditions occurred in the foothills west of Denver. Both I-70 and U.S. 40 were closed at the height of the Sunday afternoon ski rush…causing delays of many hours. Snowfall totaled only 1.0 inch at Stapleton International Airport with only a trace on the ground due to melting.
In 1988…high winds in the mountains spread over metro Denver. A wind gust to 75 mph was noted in Boulder where a traffic light was downed. Power outages were reported in Boulder County. Northwest winds to 46 mph were recorded at Stapleton International Airport.
25-26
In 1899…a major storm dumped 13.1 inches of heavy snow over downtown Denver. Rain changed to snow around mid- morning on the 25th. Snowfall became heavy and continued until late evening on the 26th. North to northeast winds gusted to 30 mph on both days. The cold air mass plunged temperatures from a high of 55 degrees on the 25th to a low of 8 degrees on the 26th.
In 1995…a potent early spring storm produced heavy snow in the mountains…but skipped over metro Denver…before producing blizzard conditions and 6-foot drifts over eastern Colorado…causing the closure of I-70 and other highways. Only 0.7 inch of snow fell at the site of the former Stapleton International Airport. North winds gusted to 40 mph at Denver International Airport on the 25th.
In 2001…a persistent band of moderate to heavy snow showers with a few embedded thunderstorms formed in the foothills around Estes Park and spread to the southeast across Boulder and Denver and on the plains to the east of Denver. Thunder and snow was reported at Jefferson County…Centennial…and Denver International Airport during the evening of the 25th. Snowfall totals included: 7 inches at Boulder and Louisville; 6 inches at Broomfield…Niwot…and Westminster; 5 inches at Eldorado Springs…Nederland…and near Strasburg. Only 2.1 inches of snow fell at the site of the former Stapleton International Airport.
25-27
In 1904…heavy snowfall totaled 7.0 inches in downtown Denver.
26
In 1899…a major winter storm dumped 11.3 inches of snow over downtown Denver.
In 1910…west winds were sustained to 42 mph. A snow shower produced a trace of snow.
In 1935…a severe dust storm swept across the city. The dense dust blew in on a gale from the east-northeast. The dust “bank” was first visible on the northeastern horizon at about 2:00 pm. It advanced toward the city as a rolling…swirling…yellowish-to smoke-black cloud. At 2:06 pm…the cloud of dust enveloped the station. Before the storm the visibility was unlimited. At 2:08 pm…the visibility was reduced to 1/8th mile. By 2:25 pm…the visibility was increasing and was above 1000 feet at 3:10 pm. Thereafter…the sun appeared as a dim “ball of fire” at times. The dust was partially gone at 8:30 pm. During the storm…northeast winds were sustained to 32 mph with gusts as high as 35 mph.
In 1971…the highest recorded temperature in March…84 degrees…occurred. This was the highest temperature recorded so early in the season. Previously…84 degrees had not been reached until April 21st. The temperature also exceeded the previous daily record of 75 degrees set in 1960. Strong northwest Chinook winds gusting to 37 mph at Stapleton International Airport were partially responsible for causing the extremely warm weather so early in the season.
In 1985…strong winds occurred along the foothills. A wind gust to 76 mph was recorded in Boulder. A dust storm produced by the strong winds caused a 35-car pileup on I-25 north of Denver. In Denver…the high winds blew out windows in a few downtown buildings. West winds gusted to 52 mph at Stapleton International Airport.
In 1993…strong winds from high based thunderstorms blew a roof off an Englewood business onto several parked cars. The winds also caused half of a furniture warehouse roof to collapse in north Denver…ripped a mechanical shed off the roof of a building in downtown Denver…and downed power lines in Commerce City. Wind gusts ranging from 55 to 68 mph were recorded. At Stapleton International Airport… Where no thunder was heard…a microburst wind gust to 55 mph briefly reduced the visibility to zero in blowing dust.
In 1994…heavy snow fell in the foothills west of Denver and over the palmer divide to the south of metro Denver. Snowfall totaled 11 inches at both the Eldora Ski Area and at Idaho Springs. Only 1.3 inches of snowfall were measured at Stapleton International Airport where north winds gusted to 28 mph.
In 2006…post-frontal strong winds quickly dissipated the dense morning fog across metro Denver. West to northwest winds were strong and gusty from mid-morning until sunset. West winds were sustained to 37 mph with gusts to 52 mph at Denver International Airport.
26-27
In 1886…heavy snowfall totaled 7.1 inches in downtown Denver.
In 1911…post-frontal north winds were sustained to 48 mph on the 26th and to 47 mph on the 27th.
In 1931…a cold front brought snow and very cold weather to the city. Snowfall totaled 7.3 inches over downtown Denver with most of the snow…6.4 inches…occurring on the 26th… When northwest winds were sustained to 38 mph with gusts to 44 mph. High temperature of 31 degrees on the 26th equaled the low temperature of the previous day as the temperature plunged to a low of 1 degree below zero. High temperature of only 15 degrees on the 27th was a record low maximum for the date. Low temperature of 2 degrees below zero on the 27th was not a record.
In 1975…a major pre-Easter blizzard…the worst since the vicious storm of 1949…battered northeastern Colorado and left livestock losses in millions of dollars…but metro Denver escaped the main brunt of the storm and received only 5.0 inches of snowfall. North winds gusted to 38 mph at Stapleton International Airport where temperatures plunged from a high of 50 degrees to 18 degrees by midnight on the 26th.
In 1991…heavy snow fell over portions of the eastern foothills with 9 inches recorded at Lake Eldora west of Boulder. The snow spread across metro Denver…but snowfall totaled only 1.7 inches at Stapleton International Airport where north to northeast winds gusting to 31 mph on both days produced some blowing snow.
On June 3, 1981 a tornado struck Thornton in what is the worst twister to have struck the Denver metro area. Are you ready should disaster strike again? Image courtesy the City of Thornton archives.
Severe weather is a fact of life in Colorado – from blizzards to tornadoes we can and do see it all. Each year the weather is responsible for claiming lives in our state and across the nation and the threat is very real. Storm spotter training allows you to learn how to protect yourself and your family while providing a public service.
Education is key to knowing how to protect you and your family. Whether you want to be an official storm spotter or maybe just want to learn more about severe weather, storm spotter training can provide you an incredible opportunity to learn.
The storm spotter program is a nationwide program with more than 280,000 trained spotters. These volunteers report weather hazards to their local National Weather Service office providing vital information when severe strikes. Data from spotters include severe wind, rain, snow measurements, thunderstorms and hail and of course tornadoes.
Storm spotters are part of the ranks of citizens who form the Nation’s first line of defense against severe weather. There can be no finer reward than to know that their efforts have given communities the precious gift of time–seconds and minutes that can help save lives.
By completing one of these training classes you can become an official storm spotter. When severe weather strikes, you can report it by calling a special toll free number or submit your report via the National Weather Service’s website.
These are great sessions for anyone wanting to learn more about the severe weather we experience in Colorado, whether you want to be an official spotter or not. All training is free. Topics include:
Below are the dates, times and locations announced thus far. The embedded calendar should automatically update with new dates and changes but be sure to check the National Weather Service site for the latest.
March 18 to March 24: This week in Denver weather history
March is of course one of Denver’s snowiest months, oftentimes bringing our biggest snowfalls of the season. We see this fact bear out in our look back with many events having delivered extraordinary snowfall totals.
From the National Weather Service:
9-19
In 1906…an extended cold and blustery period occurred with light snow totaling 14.4 inches over 11 consecutive days. The greatest amount of snow on a single day was 4.0 inches on the 15th. Only a trace of snow fell on the 12th and 17th. High temperatures were below freezing for the entire period. The coldest were 14 degrees on the 16th and 18 degrees on the 17th. Both readings were record low maximums for the dates. Low temperatures were mostly in the single digits. The coldest were 2 degrees below zero on the 16th and 5 degrees below zero on the 19th. Northeast winds were sustained to 22 mph on the 9th. North winds were sustained to 36 mph on the 10th…32 mph on the 13th…and 22 mph on the 15th.
17-18
In 1923…4.2 inches of snow fell over downtown Denver. Northwest winds were sustained to 45 mph with gusts to 49 on the 17th. Low temperature of zero degrees on the 18th was the lowest of the month that year.
In 1944…heavy snow fell across metro Denver. The storm started as rain on the 17th…but soon turned to snow. Snowfall amounts totaled 8.5 inches in downtown Denver and 11.0 inches at Stapleton Airport. The highest wind recorded during the storm was 23 mph on the 17th.
In 1961…a major winter storm dumped 10.7 inches of snow at Stapleton Airport. Most of the snow…9.7 inches…fell on the 18th. Winds were light.
In 1994…strong winds buffeted metro Denver. West winds gusted to 51 mph at Stapleton International Airport on the 17th. Other significant wind gusts included 85 mph atop squaw mountain south of Idaho Springs…and 82 mph at Rollinsville southwest of Boulder…both on the 18th.
In 1996…a second storm in less than 3 days dumped heavy snow in the mountains and foothills again…but snowfall amounts across metro Denver ranged from only 2 to 4 inches. The heavy snowfall resulted in several traffic accidents along I-25 and I-70…south and west of Denver respectively. The major accidents involved at least 30 cars and resulted in several minor injuries. The accidents closed both highways for a time. Snowfall totals included 13 inches at Evergreen and 10 inches at conifer. Snowfall totaled only 0.7 inch at the site of the former Stapleton International Airport. At Denver International Airport… North winds gusted to 28 mph on the 17th and 39 mph on the 18th.
17-19
In 1933…rain changed to snow on the evening of the 17th and continued through mid-day of the 19th. Snowfall totaled 5.6 inches with 0.83 inch of precipitation in the city. North winds were sustained to 38 mph with gusts to 46 mph on the 18th and to 30 mph with gusts to 43 mph on the 19th.
In 2003…one of the worst blizzards since historic records began in 1872 struck metro Denver with a vengeance. Heavy wet snow accumulating to around 3 feet in the city and to more than 7 feet in the foothills brought transportation to a near standstill. North winds sustained to 30 mph with gusts as high as 41 mph produced drifts to 6 feet in the city. The estimated cost of property damage alone…not including large commercial buildings…was 93 million dollars… Making it the costliest snowstorm ever. Mayor Wellington Webb of Denver said…”this is the storm of the century…a backbreaker…a record breaker…a roof breaker.” Two people died in Aurora from heart attacks after shoveling the heavy wet snow. The National Guard sent 40 soldiers and 20 heavy duty vehicles to rescue stranded travelers along I-70 east of gun club road. The heavy wet snow caused roofs of homes and businesses to collapse. The snow also downed trees…branches…and power lines. Two people were injured when the roofs of their homes collapsed. In Denver alone…at least 258 structures were damaged. In Arvada…a roof collapse at West Gate Stables killed a horse. Up to 135 thousand people lost power during the storm…and it took several days for power to be restored in some areas. Denver International Airport was closed…stranding about 4000 travelers. The weight of the heavy snow caused a 40-foot gash in a portion of the tent roof…forcing the evacuation of that section of the main terminal building. Avalanches in the mountains and foothills closed many roads…including I-70…stranding hundreds of skiers and travelers. Along I-70…an avalanche released by the Colorado department of transportation…blocked the interstate in both directions for several hours. Several residences between Baskerville and Silver Plume were evacuated because of the high avalanche danger. At Eldora Ski Area…270 skiers were stranded when an avalanche closed the main access road. After the storm ended…a military helicopter had to ferry food to the resort until the road could be cleared. The heavy snow trapped thousands of residents in their foothills homes in Jefferson County for several days. Two homes burned to the ground when fire crews could not reach the residences. Some schools remained closed well into the following week. The storm officially dumped 31.8 inches of snow at the site of the former Stapleton International Airport…the most snowfall from a single storm since the all-time record snowfall of 37.5 inches on December 4-5…1913. The storm made March 2003 the snowiest March on record…the 4th snowiest month on record… And the 5th wettest March on record. The 22.9 inches of snow on the 18th into the 19th was the greatest 24 hour snowfall ever recorded in the city during the month of March. The storm was also a drought-buster…breaking 19 consecutive months of below normal precipitation in the city. Snowfall across metro Denver ranged from 2 feet to more than 3 feet. The highest amounts included: 40 inches in Aurora…38 inches in Centennial and 6 miles east of Parker…37 inches at Buckley AFB…35 inches in southwest Denver…34 inches in Louisville… 32 inches in Arvada…31 inches in Broomfield and Westminster… And 22.5 inches in Boulder. In the foothills…snowfall ranged from 3 feet to more than 7 feet. Some of the most impressive storm totals included: 87.5 inches atop Fritz Peak and in Rollinsville…83 inches at cabin creek…74 inches near Bergen Park…73 inches northwest of Evergreen…72 inches in Coal Creek Canyon…70 inches at Georgetown…63 inches near Jamestown…60 inches near Blackhawk…55 inches at Eldora Ski Area…54 inches 8 miles west of Sedalia…and 46.6 inches at Ken Caryl Ranch. The storm was the result of a very moist…intense slow moving Pacific system which tracked across the four corners and into southeastern Colorado…which allowed deep easterly upslope flow to form along the Front Range.
18
In 1883…0.3 inch of snow fell in downtown Denver. This was the only measurable snowfall of the month.
In 1903…rain changed to sleet and then to snow…which became heavy. Post-frontal snowfall totaled 7.0 inches over the city. North winds were sustained to 51 mph with gusts as high as 60 mph.
In 1905…northwest winds were sustained to 42 mph.
In 1914…northeast winds were sustained to 46 mph with gusts to 56 mph behind a strong cold front. Snowfall was 3.4 inches over the city…but most of the snow melted as it fell. The estimated amount of melted snow was 8.1 inches.
In 1920…a terrific windstorm occurred along the eastern foothills. Two deaths were attributed to the storm and some damage occurred. Both Denver and Boulder were affected by the strong winds. West winds were sustained to 51 mph with gusts as high as 66 mph in downtown Denver. The strong winds did considerable damage to property… Wires…plate glass windows…and indirectly loss by fire. The wind caused the death of one young girl by toppling the side of a brick building on her as she was standing on a corner waiting for a car. The wind was also responsible for several severe auto accidents due to blowing debris into the streets and blowing dust and dirt into the eyes of drivers.
In 1954…west winds at sustained speeds of 40 mph and gusts as high as 56 mph produced some blowing dust at Stapleton Airport.
In 1979…heavy snow totaled 4 to 12 inches along the Front Range from Denver north. I-25 was closed for a brief time between Denver and Cheyenne. New snowfall totaled 4.3 inches at Stapleton International Airport where north winds gusted to 29 mph.
In 1998…a major winter storm dumped heavy snow over areas west from I-25 to the continental divide as strong upslope conditions developed. Two to 3 1/2 feet of snow fell in the foothills with 1 to 2 feet reported in west metro Denver. Snowfall totals included: 38 inches at Silver Spruce Ranch…2 miles south of Ward; 35 inches at Aspen Springs; 33 inches near Blackhawk; 30 inches at Eldora; 29 inches in Coal Creek Canyon; 27 inches at conifer… Chief Hosa…and Nederland; 25 inches at Rollinsville and Gross Reservoir; 21 inches at Evergreen; and 15 to 19 inches at Broomfield…Lakewood…and Table Mesa in Boulder. Elsewhere across metro Denver…snowfall ranged from 8 to 14 inches. Snowfall totaled only 7.9 inches at the site of the former Stapleton International Airport. East winds gusted to 31 mph at Denver International Airport.
18-19
In 1927…heavy snowfall was 6.5 inches in downtown Denver. Northwest winds were sustained to 28 mph on the 18th.
In 1974…heavy snowfall totaled 5.8 inches at Stapleton International Airport where northeast winds gusted to 33 mph on the 19th.
18-21
In 1907…a warm spell resulted in 6 daily temperature records. Record maximum temperatures of 82 degrees occurred on the 18th with 81 degrees on the 19th and 80 degrees on the 20th. Record high minimum temperatures of 52 degrees occurred on the 19th and 20th with 54 degrees on the 21st.
19
In 1969…high winds buffeted the Front Range foothills causing damage in Boulder and Jefferson counties. A freight train was derailed near the entrance to a canyon 20 miles west of Denver when some empty cars were caught on a curve by a gust of wind. Two light planes were heavily damaged at Jefferson County Airport. Winds gusted to 105 mph at the National Center for Atmospheric Research in Boulder…62 mph in downtown Boulder…and 80 to 90 mph at Boulder airport. Northwest winds gusted to 49 mph at Stapleton International Airport.
In 1976…northwest winds gusted to 55 mph in Denver with stronger winds along the foothills. The strong cold winds kicked up some blowing dust…reducing the visibility to near zero at times at Stapleton International Airport.
In 1982…high winds across metro Denver caused minor damage to a few mobile homes at Lowry Air Force Base. West wind gusts reached 51 mph at Stapleton International Airport where visibility was briefly reduced to 1/4 mile in blowing dust.
In 1995…strong winds associated with a pacific cold front blew across metro Denver. A west wind gust to 48 mph was recorded at Denver International Airport. Winds gusted to 59 mph at the site of the former Stapleton International Airport.
In 2010…a storm system produced deep upslope and brought heavy snow to areas in and near the Front Range. The foothills of Boulder and Jefferson counties were the hardest hit. Storm totals included: 26 inches at Coal Creek Canyon…25.5 inches…4 miles southeast of Conifer; 25 inches at Genesee…24.5 inches near Kittredge… 23.5 inches…6 miles east of Nederland…20.5 inches…3 miles west of Jamestown…5 miles southeast of Aspen Park and 5 miles southeast Idaho Springs; and 18 inches near Ralston buttes. In and around Denver…storm totals included: 15 inches in Golden; 12.5 inches in Boulder…11.5 inches at Lone Tree; 10.5 inches near Castle Pines; 11 inches…6.5 miles southwest of Castle Rock; 10 inches near Englewood…Highlands Ranch and 3 miles southwest of wheat ridge; 9 inches…4 miles west of Arvada…Broomfield…Centennial…Elizabeth and Westminster; 8.5 inches…in southeast Denver and Littleton; 7.5 inches in Louisville and near Thornton; 7 inches…4 miles south of Aurora…Lakewood and Niwot; 6.5 inches…4 miles northwest of Castle Rock…4 miles northwest of Denver and Northglenn; 6 inches in Brighton and 5 miles southeast of Sedalia. Officially… 1.7 inches of snow was measured at Denver International Airport.
19-20
Iin 1912…post-frontal heavy snowfall of 6.3 inches was measured in downtown Denver. North winds were sustained to 28 mph with gusts to 30 mph on the 19th. The strong cold front plunged temperatures from a high of 60 degrees on the 19th to a low of 1 degree on the 20th.
In 1959…a major storm dumped heavy snowfall of 7.7 inches on Stapleton Airport where north winds gusting to 44 mph caused much blowing and drifting snow. Many highways were blocked…and there was damage to phone lines along the South Platte River. The storm started as rain and changed to heavy wet snow…which froze on the lines causing the poles to break. The storm caused 2 deaths over eastern Colorado.
In 2006…strong northerly winds…associated with a surface low pressure system that intensified as it moved into the central Great Plains…brought heavy wet snow to the eastern foothills and northeastern plains of Colorado. The hardest hit areas included the foothills of Boulder and Gilpin counties. Storm totals included: 15 inches at Rollinsville… 14 inches at Aspen Springs…12.5 inches near Nederland…and 5.7 inches in the Denver Stapleton area. Strong winds…heavy snow…and poor visibility forced the closure of interstate 70 from Denver east to the Kansas state line. North winds gusted to 32 mph at Denver International Airport on the 19th.
Update: 11:15 p.m. EDT — Athletic Director at Jacksonville State University Greg Seitz tweeted confirming Jacksonville’s Coliseum has indeed incurred extensive damages due to the tornado. “My bestfriend is stuck at the Reservse [sic] in Jacksonville right now. Other tenants came to her apartment because theirs was flooding. At her apartment water started coming under the… Continue reading Tornado Hits Jacksonville, Alabama [Photos, Videos]→
March 11 to March 17: This week in Denver weather history
Snow is one thing we have not seen a lot of in recent weeks but we still have time to gain ground. March is our snowiest month and our look back at this week in Denver weather history provides evidence of this. It was this week in 2003 that the Denver was struck by a massive snowstorm – the costliest in Denver history.
From the National Weather Service:
9-11
In 1927…rain changed to heavy snow behind a cold front and totaled 7.7 inches over downtown Denver. North winds were sustained to 37 mph with an extreme velocity to 38 mph on the 11th.
In 1955…a strong windstorm raked the eastern foothills. A wind gust to 95 mph was recorded at Rocky Flats with a gust to 60 mph measured at Valmont. Damage in Boulder totaled 10 thousand dollars. Minor injuries also occurred. The strong winds were associated with a vigorous cold front that produced northwest winds at 40 mph with gusts as high as 52 mph at Stapleton Airport where the visibility was briefly reduced to 3/4 mile in blowing dust on the 10th.
In 1968…5.5 inches of snow fell at Stapleton International Airport where northeast winds gusted to 24 mph on the 10th.
9-19
In 1906…an extended cold and blustery period occurred with light snow totaling 14.4 inches over 11 consecutive days. The greatest amount of snow on a single day was 4.0 inches on the 15th. Only a trace of snow fell on the 12th and 17th. High temperatures were below freezing for the entire period. The coldest were 14 degrees on the 16th and 18 degrees on the 17th. Both readings were record low maximums for the dates. Low temperatures were mostly in the single digits. The coldest were 2 degrees below zero on the 16th and 5 degrees below zero on the 19th. Northeast winds were sustained to 22 mph on the 9th. North winds were sustained to 36 mph on the 10th…32 mph on the 13th…and 22 mph on the 15th.
10-11
In 1886…snowfall of 3.5 inches was measured in downtown Denver. Apparent post-frontal north winds were sustained to 43 mph on the 11th.
In 1977…a major blizzard struck metro Denver. Snowfall totaled 8.0 inches at Stapleton International Airport where north winds at speeds of 30 to 40 mph with gusts to 60 mph frequently reduced visibilities in blowing snow to 1/4 mile or less. Most of the snow…7.7 inches…fell on the 10th. The snow ended by daybreak on the 11th…but strong north winds persisted through the day.
In 1988…a late winter storm produced heavy snow and wind… Mainly north of Denver. Wind gusts reached 62 mph at Keenesburg and produced a lot of blowing snow…closing schools in southwest weld County. The storm closed I-70 east of Denver. Only 1.1 inch of snow fell at Stapleton International Airport…but north winds gusted to 39 mph.
10-12
In 1924…snowfall was heavy and totaled 9.9 inches over downtown Denver. North winds were sustained to 18 mph on the 11th.
In 2001…heavy snow fell over northeast Colorado and metro Denver when a combination of upslope winds and convective snow bands formed over the area. Storm totals included: 11 inches at the Eldora Ski Resort; 10 inches at Genesee; 8 inches at Elizabeth…atop Lookout Mountain…near Sedalia… And at Strasburg; 7 inches near Castle Rock and Evergreen; and 6 inches in Aurora…atop Crow Hill…and in Parker. Elsewhere across metro Denver…snowfall ranged from 2 to 5 inches with 3.9 inches at the site of the former Stapleton International Airport. North winds gusted to 28 mph at Denver International Airport on the 10th.
11
In 1896…northwest winds were sustained to 40 mph with gusts to 56 mph.
In 1991…the passage of a strong pacific cold front produced winds in excess of 60 mph across metro Denver. Blowing dust reduced the visibility to 2 miles at Stapleton International Airport where northwest winds gusted to 49 mph. A blizzard across eastern Colorado closed I-70 from Watkins to the east…but Denver escaped the storm with only a trace of snowfall.
11-12
In 1929…heavy snowfall totaled 9.3 inches in downtown Denver. Northwest winds were sustained to 31 mph with gusts to 34 mph on the 11th.
In 1947…heavy snowfall totaled 7.0 inches in downtown Denver. North winds were sustained to 15 mph on the 11th.
In 1963…snowfall totaled 5.8 inches at Stapleton International Airport where north-northwest winds gusted to 25 mph on the 11th.
In 1993…a strong storm dumped heavy snow in the mountains and 4 to 8 inches of snow over metro Denver. Snowfall totaled 3.6 inches at Stapleton International Airport where north winds gusted to 35 mph.
12
In 1893…northwest winds were sustained to 44 mph.
In 1952…northwest winds sustained at 40 mph with gusts to 60 mph were recorded at Stapleton Airport where 3.2 inches of snow also fell.
In 1954…strong winds raked metro Denver all day producing areas of blowing dust…snow…and blowing snow. At Stapleton Airport…north-northeast winds at sustained speeds of 40 to 45 mph with gusts as high as 60 mph were recorded. Snowfall totaled only 0.4 inches.
In 1982…a windstorm hit the foothills from Boulder north. The highest recorded wind gust of 90 mph occurred in Boulder. Wind gusts to 47 mph were recorded at Stapleton International Airport.
In 1985…only 1.0 inch of snow fell in Denver…but strong winds produced near-blizzard conditions and caused the closure of I-70 from Aurora to Limon for an hour in the evening. North winds gusted to 38 mph at Stapleton International Airport.
In 1999…heavy snow fell in and near the Front Range foothills. Snowfall totals included: 8.5 inches at Genesee…6 inches about 8 miles northwest of Evergreen… 4.5 inches in Boulder…4 inches in Littleton…and only 2.2 inches at the site of the former Stapleton International Airport.
12-13
In 2005…a winter storm brought heavy snow to the eastern foothills and western metro Denver overnight. Storm total snowfall included: 15 inches in Jamestown…13 inches near Blackhawk…11 inches in the foothills southwest of Boulder and near Nederland…10.5 inches at Gross Reservoir…9.5 inches at Eldorado Springs…9 inches at Roxborough Park… 8.5 inches near Longmont…8 inches in Boulder…7.5 inches at Centennial…7 inches in Louisville…3.3 inches at Denver Stapleton. At Denver International Airport…west winds gusted to 46 mph on the 12th before the passage of the cold front and north winds gusted 31 mph on the 13th.
12-16
In 1880…a protracted cold spell resulted in 8 temperature records being set. Record low temperatures for the date were set when the temperature dipped to 10 degrees below zero on the 13th and 14th…8 degrees below zero on the 12th and 15th…and 4 degrees below zero on the 16th. Daily record low maximum temperatures were set with 11 degrees on the 12th…12 degrees on the 13th…and 19 degrees on the 15th.
The United States returns to Daylight Saving Time at 2:00am Sunday, March 12, 2017.
The biannual ritual of changing our clocks to adjust for Daylight Saving Time occurs this Saturday night providing yet another signal of the changing of seasons. The United States will ‘spring forward’ one hour at 2:00am Sunday morning as we begin Daylight Savings Time.
The ritual of changing our clocks twice a year can be met with some resistance as some people struggle to adjust their body’s internal clock. The start of Daylight Saving Time can be particularly problematic given the one hour less sleep people receive on the night of the change.
However, longer days as we head into the milder months are a very real benefit and for many worth the inconvenience of a lost hour of sleep. The time change definitely has big effects on how much daylight we enjoy during our normal waking hours.
On Saturday, prior to the change, sunset will occur at 6:01pm but on Sunday the sun won’t disappear over the horizon until 7:02pm. This affords folks more time in the evening to get started on those spring-time chores and allows us to get outside and enjoy the warming weather.
The March Equinox is also on the horizon. Spring officially begins at 10:15am on Tuesday, March 20.
This year Daylight Savings Time will come to an end on November 4.
Some of the recent history of Daylight Savings Time (from Wikipedia):
Daylight saving time in the United States was first observed in 1918. Most areas of the United States currently observe daylight saving time, with the exceptions being the states of Arizona and Hawaii along with the territories of Puerto Rico, American Samoa, Guam, and the Northern Mariana Islands.
From 1987 to 2006, daylight saving time in the United States began on the first Sunday of April and ended on the last Sunday of October. The time was adjusted at 2:00 AM (0200) local time (as it still is done now).
Since 2007, daylight saving time starts on the second Sunday of March and ends on the first Sunday of November, with all time changes taking place at 2:00 AM (0200) local time.
March 4 to March 10: This week in Denver weather history
March is Denver’s snowiest month and it is not unusual for us to receive heavy, wet snows during this time. Our look back at this week in Denver weather history highlights many such events.
From the National Weather Service:
2-4
In 1963…heavy wet snow was accompanied by strong gusty winds across metro Denver. Snowfall totaled 11.6 inches at Stapleton Airport where north winds gusting to 44 mph caused much blowing and drifting snow. Hazardous driving conditions resulted in many traffic accidents.
In 1976…snowfall totaled 8.0 inches at Stapleton International Airport where…on the 4th…northeast winds gusted to 31 mph reducing the visibility to as low as 1/4 mile. Maximum snow depth on the ground was 7 inches. Nine inches of snow were measured in Boulder.
3-4
In 1932…a dust storm occurred on the 3rd during the late afternoon. North winds gusting as high as 38 mph behind a cold front kicked up much blowing dust. Light snow developed during the evening and continued through the early morning of the 4th. Snowfall totaled 2.7 inches.
In 1934…strong winds raked Boulder. A wind gust to 62 mph was recorded at Valmont just east of Boulder. The strong winds caused hundreds of dollars of damage in Boulder.
In 1981…the most vigorous snow storm of the season struck the state…closing many schools and most highways connecting Denver…Colorado Springs…and Limon. North winds gusting to 43 mph whipped nearly 10 inches of snow in Denver into 3-foot drifts and snarled traffic on the morning of the 4th. Snowfall totaled 9.8 inches at Stapleton International Airport.
In 1989…a storm dumped 2 to 6 inches of snow across metro Denver. The snow caused 2-hour air traffic delays at Stapleton International Airport where 3.0 inches of snow fell and north winds gusted to 23 mph on the 3rd. There were many traffic accidents across metro Denver. I-70 was closed east of Denver for a time on the 3rd.
In 1991…high winds raked the eastern foothills. Wind gusts of 60 to 90 mph were common with 119 mph recorded at Wondervu southwest of Boulder…106 mph on Shanahan Ridge and 92 mph at Table Mesa…both in southwest Boulder. Several trees were uprooted and traffic signs and lights blown over. Flying debris caused damage to homes… Buildings…and cars. In Boulder…a stop sign was blown onto a car. There were no reports of injuries. Southwest winds gusting as high as 48 mph briefly reduced the prevailing visibility to as low as 1/16th mile in blowing dust at Stapleton International Airport on the 4th.
3-5
In 1961…snowfall totaled 8.3 inches at Stapleton Airport over the 3-day period with most of the snow…4.4 inches… falling on the 3rd. Winds were generally light gusting to only 23 mph.
4
In 1887…snowfall was only 0.1 inch. This was the earliest last measurable snow of the season.
In 1971…a wind gust to 102 mph was recorded at the National Center for Atmospheric Research in Boulder. A wind gust to 83 mph was measured at the National Bureau of Standards. In downtown Boulder…sustained winds reached 35 mph with gusts as high as 57 mph. No significant damage was reported. West winds gusted to only 28 mph at Stapleton International Airport.
In 1982…brief heavy snow accompanied by a few thunderstorms struck metro Denver. Lightning struck a house in Arvada setting it afire. The thunderstorm produced 5 inches of snowfall in a 2-hour period in Wheat Ridge. The snow made roads very icy and slick causing a 59-car pile-up on I-70 in north Denver. Snowfall with thunder totaled only 1.3 inches at Stapleton International Airport.
In 1997…a fast moving Pacific storm produced heavy snow in the foothills. Snowfall at Conifer measured 9 inches. Only light snow fell elsewhere over metro Denver. Snowfall totaled only 1.2 inches at the site of the former Stapleton International Airport. North northeast winds gusted to 28 mph at Denver International Airport.
4-5
In 1971…heavy post-frontal snowfall totaled 7.7 inches at Stapleton International Airport where north winds gusted to 28 mph.
In 1992…snow spread from the mountains into the eastern foothills where 19 inches fell in Coal Creek Canyon. Rain fell over lower elevations of metro Denver with 1.12 inches of precipitation recorded at Stapleton International Airport and only one half inch of snow. North winds gusted to 32 mph.
In 2004…snowfall totaled 1.8 inches at the Denver Stapleton site. This was the only measurable snowfall of the month. Northeast winds gusted to 29 mph at Denver International Airport.
4-6
In 1931…a cold front with north winds gusting to 35 mph on the evening of the 4th brought snowfall on the 5th into the early morning of the 6th. Heavy snowfall totaled 6.2 inches. Temperatures plunged from a high of 58 degrees on the 4th to a low of only 22 degrees by midnight…which was also the high reading on the 5th.
In 1983…a slow moving moisture laden storm produced heavy snow and rain. Two to three feet of snow fell in the foothills at Wondervu and Nederland. The southern portion of metro Denver was buried with 26 inches of snow in southeast Aurora…25 inches at Franktown…and 19 inches at Littleton. Snowfall totaled 18.7 inches at Stapleton International Airport with most of the snow…18.0 inches… Falling on the 5th. Brighton received only 11 inches of new snow. Boulder was drenched by rain and received no snow. Precipitation from the storm totaled 3.06 inches at Stapleton International Airport where north winds gusted to 28 mph. The heavy wet snow snapped many tree limbs…which fell on power and phone lines causing many outages. Numerous highways were closed. Two thousand travelers were stranded at Stapleton International Airport where only one runway was open for a time. Many flights were canceled. One home in Denver was severely damaged when its roof collapsed under the weight of the heavy snow. The 2.68 inches of precipitation on the 5th was the greatest calendar day precipitation ever recorded in the city during March. The 2.79 inches of precipitation on the 4th and 5th was the greatest 24 hour precipitation ever measured during March.
5
In 1887…the longest snow-free period on record…232 days… Began. The last measurable snowfall of the season…0.1 inch…occurred on the 4th. The first measurable snow of the next season…0.3 inch… Occurred on October 23rd.
In 1900…northwest winds were sustained to 51 mph with gusts to 60 mph. The strong Bora winds warmed the temperature to a high of 44 degrees.
In 1926…post-frontal north winds were sustained to 44 mph with gusts as high as 54 mph. The cold front also produced a thunderstorm.
In 1990…the southern portion of metro Denver was hit by a line of thunderstorms. Heavy rain…0.90 to 2.40 inches… And pea to marble size hail piled to a depth of 2 to 3 inches over portions of northern and eastern Douglas and western Arapahoe counties. Thunderstorm winds to 50 mph were clocked at Centennial airport. Thunderstorm rainfall was 0.62 inch at Stapleton International Airport.
5-6
In 1935…3.0 inches of snow fell in downtown Denver. This was the only measurable snow of the month. Northwest winds gusted to 29 mph on the 5th.
In 1940…heavy snowfall totaled 9.1 inches over downtown Denver. North winds gusted to 22 mph.
In 2000…high winds developed in and near the foothills just prior to the passage of an upper level storm system moving in from the west. Peak gusts from the windstorm included: 88 mph at the National Center for Atmospheric Research near Boulder…82 mph in Boulder…80 mph at the national wind technology center south of Boulder…79 mph on Rocky Flats…and 71 mph in Golden Gate Canyon. Several power lines were downed causing a few brief outages. Thunderstorms produced southeast wind gusts to 51 mph at Denver International Airport on the 5th.
In 2003…high winds spread from the mountains down the eastern slopes. The highest wind gusts were 85 mph atop the Gamow Tower on the University of Colorado campus in Boulder and 70 mph at the national wind technology center on Rocky Flats west of Broomfield. West winds gusted to 44 mph at Denver International Airport on the 6th.
6
In 1900…west winds were sustained to 41 mph with gusts to 49 mph.
In 1920…the high temperature warmed to only 6 degrees… The all-time record low maximum temperature for the month of March. The same reading also occurred on March 10…1948.
In 1972…a wind gust to 100 mph was recorded at Jefferson County Airport in Broomfield. Winds gusted in Boulder at speeds of 50 to 65 mph. A light plane was overturned… And there was damage to other planes at Boulder airport. The roof of a garage was blown off…and a mobile home was overturned in Boulder. A truck was blown off the highway 15 miles east of Boulder. West winds gusted to 51 mph at Stapleton International Airport. The warm Chinook winds were responsible for setting a new record high temperature for the date of 75 degrees…exceeding the old record of 72 degrees set in 1925.
In 1990…a blizzard pummeled metro Denver. Snow fell at a rate of 2 to 3 inches an hour. Gusty north winds whipped the snow into 2- to 3-foot drifts by noon. During the afternoon many stores and schools closed. By rush hour sustained winds of 35 to 46 mph and gusts to 58 mph reduced visibilities to near zero and whipped the new snow into 3- to 4-foot drifts. Many residential as well as secondary and primary roads became impassable. I-25 and I-70 were closed in and out of the city. Road crews cleared drifts as high as 12 feet in southeast Boulder and northwest Adams counties. Several hundred rush hour commuters…including the state’s governor…were caught in the blizzard conditions along a 15-mile stretch of the Denver-Boulder turnpike. Many remained snowbound in their vehicles up to 8 hours until rescued by police and the National Guard. The highway remained closed until mid-day on the 7th. Shelters for stranded commuters and travelers were opened in Broomfield and Castle Rock. Many workers didn’t even try to go home…but filled downtown hotels to near capacity. By early evening…Stapleton International Airport was shut down after an airliner with 82 passengers aboard skidded off a runway. Snowfall totals for the storm varied from 18 to 50 inches in the foothills above 6 thousand feet…9 to 24 inches west of I-25…and 2 to 12 inches over eastern metro Denver. Snowfall from the storm totaled 11.8 inches at Stapleton International Airport where the maximum snow depth on the ground was 7 inches due to melting.
In 2004…very strong downslope winds developed in and near the eastern foothills…causing numerous traffic accidents and extensive property damage to roofs and aluminum sheds. Three semi-trucks were toppled by the strong winds near the I-70 and C-470 interchange. One of the trucks was carrying a modular home…while another was hauling hazardous material. I-70 had to be closed in both directions until the accidents could be cleaned up. Strong winds forced the closure of State Highway 93 between Golden and Boulder…when the road became icy and snowpacked from localized ground blizzards. Another semi- truck was blown over near the intersection of State Highways 72 and 93 atop Rocky Flats. Scattered power outages were reported across northern and western sections of metro Denver…affecting around 2000 residents. In Boulder…several pine trees were uprooted by the high winds.
If you felt like the past month was a bit chilly you would be correct. February saw temps a good bit below normal. We did see some help with our lack of seasonal snow and precipitation was a bit above average as well.
The first third of the month continued the dry, warmer than normal conditions we had for much of January. On the 10th of the month we experienced a very cold day and our first snowfall of the month. However, we soon returned to overall dry and warm conditions.
From there we saw things change significantly and quickly. Following an extraordinarily mild day on the 18th, temperature plummeted over the next 48 hours or so. So much so that the high temperature on the 20th was a record low maximum for the date.
Chilly temperatures lingered through the 25th as we saw a week of cold. The 19th, 20th and 22nd also brought snow that helped to add to the seasonal totals.
The final three days of the month saw mercury readings at or above normal.
Overall average temperature for the month of February was 29.2 degrees. At Denver International Airport where the Mile High City’s official records are kept, it was just slightly warmer with an average of 29.9 degrees. Both came a good bit short of the historical February average temperature of 32.5 degrees.
Temperatures in Thornton ranged from a high of 69 degrees on the 18th down to a low of 4 degrees below zero on the 21st. Denver’s highest temperature matched ours while their coldest was 7 degrees below on the 21st.
On average, Denver receives 0.37 inches of precipitation in February. This year, Thornton was a bit above that with 0.45 inches while Denver was below with 0.31 inches.
Both Thornton and Denver saw above average levels of snow although we bested the Mile High City on that front. Thornton recorded 9.5 inches while Denver saw 6.2 inches. Average for the month is 5.7 inches.
Thornton, Colorado’s February 2018 weather and climate graph. (ThorntonWeather.com)
From the National Weather Service:
CLIMATE REPORT
NATIONAL WEATHER SERVICE DENVER/BOULDER CO
805 AM MST THU MAR 1 2018
...................................
...THE DENVER CO CLIMATE SUMMARY FOR THE MONTH OF FEBRUARY 2018...
CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1872 TO 2018
WEATHER OBSERVED NORMAL DEPART LAST YEAR`S
VALUE DATE(S) VALUE FROM VALUE DATE(S)
NORMAL
................................................................
TEMPERATURE (F)
RECORD
HIGH 80 02/10/2017
LOW -25 02/01/1951
02/08/1936
HIGHEST 69 02/18 66 3 80 02/10
LOWEST -7 02/21 -6 11 02/26
AVG. MAXIMUM 44.4 46.2 -1.8 53.9
AVG. MINIMUM 15.4 18.9 -3.5 26.6
MEAN 29.9 32.5 -2.6 40.2
DAYS MAX >= 90 0 0.0 0.0 0
DAYS MAX <= 32 6 3.9 2.1 3
DAYS MIN <= 32 26 26.9 -0.9 21
DAYS MIN <= 0 3 1.3 1.7 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 2.01 1934
MINIMUM 0.01 1970
TOTALS 0.31 0.37 -0.06 0.23
DAILY AVG. 0.01 0.01 0.00 0.01
DAYS >= .01 5 5.3 -0.3 3
DAYS >= .10 2 0.7 1.3 1
DAYS >= .50 0 0.0 0.0 0
DAYS >= 1.00 0 0.0 0.0 0
GREATEST
24 HR. TOTAL 0.14 02/10 TO 02/10 02/23 TO 02/24
SNOWFALL (INCHES)
RECORDS
TOTAL 6.2 5.7
RECORD FEBRUARY 22.4 2015
DEGREE_DAYS
HEATING TOTAL 975 908 67 685
SINCE 7/1 4057 4439 -382 3802
COOLING TOTAL 0 0 0 0
SINCE 1/1 0 0 0 0
FREEZE DATES
RECORD
EARLIEST 09/08/1962
LATEST 06/08/2007
EARLIEST 10/07
LATEST 05/05
.................................................................
WIND (MPH)
AVERAGE WIND SPEED 9.9
RESULTANT WIND SPEED/DIRECTION 2/230
HIGHEST WIND SPEED/DIRECTION 38/270 DATE 02/24
HIGHEST GUST SPEED/DIRECTION 47/270 DATE 02/24
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.60
NUMBER OF DAYS FAIR 7
NUMBER OF DAYS PC 12
NUMBER OF DAYS CLOUDY 9
AVERAGE RH (PERCENT) 60
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORMS 0
HEAVY RAIN 0 MIXED PRECIP 6
LIGHT RAIN 0 RAIN 0
LT FREEZING RAIN 6 FREEZING RAIN 0
HEAVY SNOW 1 HAIL 0
LIGHT SNOW 15 SNOW 6
FOG 20 FOG W/VIS <=1/4 MILE 9
HAZE 9
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
The month of February brought some relief to our snow season which up until then had been extremely anemic. However, we still have a long ways to go to reach normal levels.
March usually offers healthy snowfall giving us an opportunity to add to those numbers. While there is good snow potential in March, the month also typically brings much warmer temperatures.
March is historically Denver’s snowiest month and brings about 20% of our annual snowfall. Heavy, wet spring snow storms can oftentimes bring the entire month’s snowfall total in one monstrous snow.
We also start the transition to spring and severe weather season and the month typically brings our first thunderstorms of the year. Temperatures climb throughout the month and by the end our average daytime highs are near 60 degrees.
