March 14 to March 20 - This week in Denver weather history
Think winter is over? Don’t count on it. A quick look back at this week in Denver weather history illustrates why. Many occurrences of winter-like weather can intrude as we see and we don’t even have to look very far back. It was this week that the March Blizzard of 2003 struck – one of the worst snowstorms in Denver history.
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.
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.
13-14
In 1996…a storm system moving across northern Colorado dumped heavy snow in the mountains and foothills and across metro Denver where snowfall ranged from 5 to 10 inches. A foot of new snow was measured at Nederland with 11 inches at Conifer. Snowfall totaled 8.0 inches at the site of the former Stapleton International Airport. Northeast winds gusted to 30 mph at Denver International Airport on the 13th.
13-15
In 1906…snowfall totaled 8.0 inches over downtown Denver.
March 7 to March 13 - This week in Denver weather history
As we talked about in our March weather preview, Denver can see the entire gamut of weather conditions this time of year and our look back at this week in history shows that. There are of course plenty of the famous March snowstorms including big ones in 1992 and 1998. We also see the usual high winds such as was the case in 2000 and even extreme cold as we saw over an extended period in 1906.
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6-7
In 1981…a storm dumped 4 to 8 inches of snow over higher elevations between Denver and Colorado springs. At Stapleton International Airport…north winds gusted to 16 mph and snowfall totaled only 2.5 inches.
In 1998…heavy snow fell over portions of metro Denver and the adjacent foothills. Snowfall totals included 11 inches at Chief Hosa…10 inches near Evergreen…8.5 inches in Broomfield…8 inches at Bailey…and 7 inches at both Standley Lake and Thornton. Elsewhere…snowfall across metro Denver ranged from 3 to 6 inches with 4.9 inches measured at the site of the former Stapleton International Airport. North winds gusted to 26 mph at Denver International Airport on the 7th. Several accidents occurred along area roads and highways when they became icy and snowpacked.
6-8
In 1932…snowfall totaled 6.3 inches in downtown Denver. Most of the snow…5.2 inches…fell on the 8th. Northeast winds gusted to 20 mph on the 6th.
7
In 1872…heavy rain started shortly after midnight and soon turned to sleet…which continued to just after sunrise…the ground at that time not even being white. At about 7:00 am the worst snow storm of the winter commenced and continued until 10:00 pm…snowing heavily nearly all the time. North winds averaged a sustained speed of 25 mph. About 8 inches of snow fell…but it drifted too much to obtain a direct measurement.
In 1901…northwest winds were sustained to 40 mph with gusts as high as 58 mph. The strong Chinook winds warmed the temperature to a high of 70 degrees.
In 1902…northwest winds were sustained to 45 mph with gusts to 53 mph.
In 1950…strong north winds at 40 mph with gusts as high as 60 mph produced a dust storm across metro Denver. At Stapleton Airport…blowing dust reduced visibility to as low as 1/4 mile for most of the day.
In 1972…northwest winds gusted to 51 mph at Stapleton International Airport. The Chinook winds warmed temperatures to a high of 64 degrees.
In 1984…a wind gust to 63 mph was recorded at Golden Gate Canyon west of Denver. West winds gusted to 39 mph at Stapleton International Airport.
February 28 to March 6 - This week in Denver weather history
Wild weather is a fact of life in Denver and in Colorado in general. We see that consistently in the history books and this week demonstrates that. As usual we see high wind events and extreme cold. Also notable is that as we enter the month of March, we start to see occurrences of those heavy, wet spring snows that can wreak havoc.
From the National Weather Service:
22-29
In 1960…heavy snowfall of 6.1 inches at Stapleton Airport on the 22nd and 23rd marked the beginning of a protracted cold spell which lasted until the end of the month. The cloudy… Cold weather was accompanied by occasional light snow or flurries and fog. New record low temperatures for the dates were set on the 24th thru the 29th with the lowest temperature of 11 degrees below zero on the 28th. The seven consecutive days of low temperatures of zero or below had been exceeded in duration only 4 times previously. New low maximum temperatures for the dates were set on the 23rd… 24th…and the 26th thru the 29th with the lowest maximum temperature of 8 degrees recorded on the 26th.
27-28 in 1918…heavy snowfall totaled 9.6 inches in downtown Denver. Most of the snow…8.4 inches… Fell on the 27th.
In 1931…a major winter storm dumped 12.0 inches of heavy snowfall over downtown Denver. This is the greatest 24 hour snowfall ever recorded during the month of February. North winds gusted to 18 mph on the 28th.
In 2006…a warm spell resulted in 3 temperature records. The high temperature of 73 degrees on the 27th equaled the record high for the date. High temperature of 77 degrees on the 28th was a record high for the date and equaled the all time record high temperature for February first set on February 4…1890.
28
In 1896…northwest winds were sustained to 54 mph with gusts to 65 mph. The winds warmed the temperature to a high of 56 degrees. This was the second consecutive day of strong winds in the city.
In 1958…at Stapleton Airport… Snowfall totaled 5.3 inches and northeast winds gusted to 24 mph.
28-1
In 1875…6 inches of snow fell from 3:15 pm on the 28th to 1:00 am on the 1st. Precipitation for the two days was 0.50 inch.
29
In 1896…southwest winds were sustained to 41 mph with gusts to 60 mph. This was the third consecutive day that strong winds occurred in the city.
In 1992…Chinook winds gusted to only 25 mph at Stapleton International Airport…but warmed the temperature to a high of 70 degrees…which equaled the record for the date first set in 1940.
In 2004…only light snow fell across metro Denver… While a blizzard raged across northeast Colorado. Both I-70 and I-76 were closed to the east of Denver by winds gusting to 60 mph producing drifting snow to depths of 2 to 6 feet. Snowfall was only 1.6 inches at the Denver Stapleton site. North winds gusted to 41 mph at Denver International Airport.
29-1
In 1896…snowfall totaled 5.5 inches in the city. Northeast winds gusted to 24 mph.
In 1948…snowfall totaled 5.9 inches in downtown Denver. North winds were sustained to 15 mph.
1
In 1904…west winds were sustained to 42 mph with gusts as high as 58 mph. The Chinook winds warmed the temperature to a high of 67 degrees.
In 1906…snowfall was heavy and totaled 7.5 inches over downtown Denver. Northeast winds were sustained to 37 mph.
In 1940…snowfall was heavy and totaled 7.7 inches in downtown Denver.
In 1943…6.0 inches of snow fell over downtown Denver. North winds were sustained to 19 mph.
In 1956…west-northwest wind gusts to 52 mph were recorded at Stapleton Airport.
In 1961…a wind gust to 65 mph was recorded at the Colorado building in downtown Boulder. The high winds caused some minor damage. Northwest winds gusted to 43 mph at Stapleton International Airport.
In 1974…a wind gust to 77 mph was recorded in Boulder. Southwest winds gusted to 37 mph at Stapleton International Airport.
In 2002…upslope conditions caused heavy snow to develop in and near the eastern foothills. Snow totals included 14 inches at Eldorado Springs and near Genesee; 13 inches atop Lookout Mountain; 12 inches in Coal Creek Canyon; 10 inches in Nederland and just east of Boulder; 9 inches in Boulder and Morrison; and 8 inches at Broomfield…Erie… Golden…Louisville… And Littleton. Snowfall totaled 6.5 inches at the site of the former Stapleton International Airport. Northeast winds gusted to 31 mph at Denver International Airport.
February 21 to February 27 - This week in Denver weather history
Snow and wind dominate our look back at this week in Denver weather history. Just last year, high winds on the Boulder Turnpike blew a trailer into oncoming traffic damaging two cars and injuring one driver. 40 years ago, a protracted cold spell resulted in seven consecutive days with low temperatures dropping to zero or below. Those are just two of the many events – see more below.
19-21
In 1971…heavy snowfall totaled 9.0 inches at Stapleton International Airport where north winds gusted to only 16 mph. Most of the snow occurred on the 19th and 20th. The 24 hour snowfall of 8.2 inches was the greatest in February since 1953.
20-21
In 1997…heavy snow fell in the foothills. Snowfall totals included: 16 inches at Eldora Ski Area; 15 inches at South Turkey Creek; 14 inches at Conifer and Morrison; and 11 inches at Blackhawk…Evergreen…and Intercanyon. Only 1.0 inch of snow fell at the site of the former Stapleton International Airport. Northeast winds gusted to 32 mph at Denver International Airport on the 20th.
21
In 1901…northwest winds sustained to 43 mph with gusts to 46 mph warmed the temperature to a high of 55 degrees.
In 1935…strong west to northwest winds sustained to 30 mph with gusts to 34 mph produced considerable blowing dust. The Chinook winds warmed the temperature to a high of 60 degrees.
In 1967…west winds gusting to 53 mph produced some blowing dust at Stapleton International Airport. Winds were strong and gusty all day.
In 1988…high winds were reported along the foothills with 90 mph in east Boulder where the winds knocked out a few street and traffic lights. The strong winds whipped a grass and timber fire in Boulder canyon. The fire threatened some homes for a time…but was extinguished before causing any significant property damage. West winds gusting to 35 mph at Stapleton International Airport warmed the temperature to a high of 63 degrees.
21-22
In 1909…a major storm dumped 12.9 inches of heavy snowfall over the city. North winds were sustained to 37 mph on the 22nd. Temperatures during the storm hovered in the 20’s.
22
In 1893…northwest winds were sustained to 36 mph with gusts to 50 mph.
In 1900…northwest winds sustained to 40 mph with gusts to 45 mph warmed the temperature to a high of 61 degrees.
In 1910…a cold front caused a remarkably sharp drop in temperature from 43 degrees at 3:00 am to only 3 degrees at 8:30 am. These were the high and low temperatures for the day. Early west winds switched to northeast behind the front.
In 1927…west winds were sustained to 42 mph with a measured maximum velocity to 60 mph.
In 1954…strong and gusty west winds persisted throughout the day. The highest wind gust recorded at Stapleton Airport was 58 mph.
In 1960…snowfall totaled 5.9 inches…producing near-blizzard conditions in snow and blowing snow at Stapleton Airport where northeast wind gusts to 40 mph reduced visibility to 1/2 mile.
In 1986…high winds occurred in the foothills. Wind gusts of 65 to 70 mph were reported at Golden Gate Canyon…and a peak gust of 83 mph was recorded at Echo Lake. Northwest winds gusted to only 29 mph at Stapleton International Airport.
In 1988…a wind gust to 83 mph was recorded in Boulder with 80 mph clocked at Rollinsville. Northwest winds gusted to 45 mph at Stapleton International Airport.
In 1996…wind gusts to 63 mph were reported in western Elbert County. Southwest winds gusted to 45 mph at Denver International Airport.
In 1999…strong post-frontal…Bora winds developed over the foothills and spread over the northeast plains. Peak wind gusts included: 87 mph at Golden Gate Canyon; 84 mph at Wondervu; 80 mph at the National Center for Atmospheric Research mesa lab; 75 mph at the Rocky Flats Environmental Test Facility; 74 mph at Jefferson County Airport near Broomfield; 72 mph at the Gamow Tower on the University of Colorado campus in Boulder; and 60 mph at Bennett. West to northwest winds gusted to 44 mph at Denver International Airport.
In 2000…thunder was heard across much of metro Denver. Thunderstorms over southwest metro Denver produced 1/4 to 1/2 inch diameter hail at Pinehurst Country Club. A thunderstorm at Denver International Airport produced wind gusts to 34 mph. This was only the 6th time since 1891 that thunder had been reported in February.
February 14 to February 20 - This week in Denver weather history
Many notable weather events have occurred in Denver this week in the past, some recently. It was just last year that a windstorm knocked down trees and powerlines in Boulder. Three years ago, we saw an end to 61 days straight with snow cover – the second longest streak in Denver history.
13-14
In 1895…a cold air mass settled over the city. High temperatures of only 4 degrees on the 13th and 8 degrees on the 14th were record low maximum temperatures for each day. Low temperatures were 6 degrees below zero on the 13th and 5 degrees below zero on the 14th…but were not records. Light snow totaled only 0.4 inch. Winds were light.
In 1960…snowfall totaled 6.1 inches and north-northwest winds gusted to 39 mph at Stapleton Airport.
In 1967…high winds were widespread along the foothills where wind gusts of 60 to 90 mph were common. A wind gust to 108 mph was measured at the National Center for Atmospheric Research in Boulder. Sustained winds of 50 to 55 mph with gusts as high as 70 mph were recorded in downtown Boulder. An estimated 3 thousand dollars in damage occurred to mobile homes in Boulder. Power lines were downed over a wide area. At Stapleton International Airport…west winds gusted to 32 mph on the 13th and southwest winds gusted to 48 mph on the 14th.
In 1972…winds gusted to 67 mph at the National Bureau of Standards in Boulder. Wind gusts to 49 mph were measured in downtown Boulder. West winds gusted to 26 mph at Stapleton International Airport.
In 2001…heavy snow fell across metro Denver and in the foothills. Snowfall totals included: 8 inches at Evergreen; 7 inches atop Crow Hill and in Lakewood; 6 inches in Denver…Doubleheader…Eldorado Springs… Morrison…and Pine Junction. Snowfall totaled 4.8 inches at the site of the former Stapleton International Airport. Northeast winds gusted to 33 mph at Denver International Airport on the 13th.
14
In 1918…southwest winds were sustained to 41 mph with a measured extreme velocity to 46 mph.
In 1987…metro Denver received only 3 to 4 inches of snow… But the foothills west of Boulder received up to 11 inches of snow. Snowfall totaled 4.2 inches at Stapleton International Airport where north winds gusted to 31 mph.
In 1988…winds gusted to 81 mph at Echo Lake.
In 2002…high winds developed in the Front Range foothills during the early morning hours. Winds gusted to 84 mph… 11 miles north of central city. West winds gusted to 43 mph at Denver International Airport.
14-15 in 1960…heavy snowfall totaled 6.1 inches at Stapleton Airport.
In 1965…5.4 inches of snow fell at Stapleton International Airport behind a cold front. North-northeast winds gusted to 32 mph. Winds were strong and gusty all day and caused considerable blowing snow…contributing to hazardous driving conditions mainly to the east of Denver.
In 1984…a snow and wind storm howled across eastern Colorado closing I-70 east of Denver. This was the second blizzard in less than 4 days. Only 0.5 inch of new snow fell at Stapleton International Airport…but north winds gusted to 51 mph.
February 7 to February 13 - This week in Denver weather history
You can tell how eventful a week in Denver weather history is by the length of these articles and this one is a long one for sure. In history we have seen Arctic cold, spring-like warmth, major snowstorms and blizzards and hurricane force winds. There is even a rare thunderstorm that dropped a bit of hail.
30-7
In 1985…a cold front on the 29th produced a protracted cold spell as arctic air remained entrenched across metro Denver. While the only daily temperature record set was a low maximum reading of 2 degrees on February 3rd…minimum temperatures plunged well below zero on 9 consecutive days. The coldest readings were 15 degrees below zero on January 31st and 14 degrees below zero on February 5th.
31-8
In 1963…warm weather that began with the strong Chinook winds on the 31st and 1st continued through the 8th. Maximum temperatures through the period ranged from 52 degrees on the 2nd to 76 degrees on the 5th…which was a new record high for that date.
31-12
In 1899…a protracted cold spell lasted almost two weeks. Low temperatures plunged below zero on all days but February 9th with a reading of 6 degrees. The coldest low temperature of 22 degrees below zero on February 6th was a record low for the date. Low temperatures of 20 degrees below zero occurred on both February 11th and 12th… But only the 11th remains as the record minimum for the date. High temperature of only 5 degrees below zero on February 11th was a record low maximum for the date. High temperatures climbed to only zero degrees on both February 2nd and 3rd…but were not records. Intermittent light snow or flurries fell during the period. The most snowfall…2.0 inches…occurred on February 2nd.
1-9
In 1883…a protracted cold period occurred when low temperatures dipped below zero for 9 consecutive days. Low temperatures ranged from 22 degrees below zero on the 4th to 2 degrees below zero on the 1st and 6th. High temperatures ranged from 10 below zero on the 3rd to 23 on the 9th. Several temperature records were set that still stand today. Record lows of 18 below and 22 below zero occurred on the 3rd and 4th. Record low maximum readings of 2 below and 10 below zero occurred on the 2nd and 3rd. The high of only 10 below zero on the 3rd is the coldest maximum temperature ever recorded in Denver.
5-11
In 1978…the 5th marked the start of a record 7 consecutive days of dense fog at Stapleton International Airport. The heavy fog reduced the visibility to 1/4 mile or less for a period of time on each of these days. Light snow and/or freezing drizzle occurred on most days. Fog reducing visibility to less than 7 miles was recorded at Stapleton International Airport on 11 consecutive days through the 15th. During the period 5-14…the cold thick fog deposited heavy rime ice up to 5 inches thick on power lines and poles over a wide area of eastern Colorado…causing a major electrical power outage disaster.
December 27 to January 2 - This week in Denver weather history
Snow and wind are the two dominant weather conditions seen on our look back at this week in Denver weather history. Three years ago, the second of two major winter storms buried Denver and closed highways. Two years ago, damaging winds that downed trees and caused power outages occurred.
25-31
In 1980…temperatures were unusually warm during the week between Christmas and new year’s. High temperatures for the week ranged from the mid-50’s to the mid-70’s. Four temperature records were set. Record highs occurred on the 26th with 68 degrees…the 27th with 75 degrees…and the 30th with 71 degrees. A record high minimum temperature of 41 degrees occurred on the 27th.
26-27
In 1954…a major storm dumped heavy snow across metro Denver. Snowfall totaled 8.6 inches at Stapleton Airport. The storm produced the heaviest snowfall of the calendar year and was the only measurable snowfall in December.
In 1987…a snowstorm stalled in northeastern Colorado…giving metro Denver its worst winter storm in 4 years. Total snowfall from the storm ranged from 12 to 18 inches on the east side…1 to 2 feet in Boulder County…and 2 to 3 feet in western and southern parts of metro Denver. The largest reported snowfall was 42 inches at Intercanyon in the foothills southwest of Denver. Snowfall totaled 14.9 inches at Stapleton International Airport. Winds were light on the 26th…but increased as high as 40 mph on the 27th… Creating near-blizzard conditions and forcing complete closure of Stapleton International Airport for about 8 hours. The strong winds whipped drifts to 5 feet high on the east side of town. All interstate Highways leading from Denver were closed on the 27th.
26-28
In 1979 a heavy snow storm dumped 6 to 10 inches of snow over the metro area and 15 to 20 inches at Boulder with up to 2 feet in the foothills west of Boulder. Heavy snowfall totaled 6.0 inches at Stapleton International Airport where north winds gusted to 21 mph. Most of the snow… 4.8 inches…fell on the 27th.
27
In 1895…west Chinook winds sustained to 44 mph with gusts to 48 mph warmed the temperature to a high of 52 degrees.
In 1901…an apparent cold front produced sustained north winds to 41 mph with gusts to 48 mph.
In 1957…northwest winds gusting to 52 mph produced some blowing dust across metro Denver.
In 1975…a northwest wind gust to 53 mph was recorded at Stapleton International Airport.
In 1976…a strong pacific cold front moving across metro Denver produced a northwest wind gust to 53 mph at Stapleton International Airport.
In 1990…high winds raked the eastern foothills with a wind gust to 84 mph clocked on fritz peak near Rollinsville. The strong northwest winds of 50 to 70 mph whipped newly fallen snow over higher areas into billowy clouds several hundred feet high that could be seen from most locations across metro Denver.
In 1996…another round of high winds developed over portions of the Front Range foothills during the morning hours. Several wind gusts from 70 to 100 mph were reported at Wondervu southwest of Boulder. West-northwest winds gusted to 38 mph at Denver International Airport.
In 2005…a trained weather observer in Georgetown recorded a wind gust to 94 mph. No damage was reported.
In 2007…a winter storm brought heavy snow to portions of the urban corridor and adjacent plains. Storm totals generally ranged from 3 to 7 inches. Locally heavier bands produced up to 10 inches of snow. In the urban corridor…storm totals included: 10 inches…10 miles south-southeast of Buckley AFB and at Castle Pines; 9.5 inches…4 miles south-southeast of Aurora and Kassler; 7.5 inches…2 miles southeast of Highlands Ranch; 7 inches in Aurora and Sedalia; 6.5 inches in Arvada…4 miles east of Denver and Lafayette; 6 inches in Castle Rock and Thornton. A measurement of 5.4 inches was taken at the former Stapleton International Airport. The official total for the month was 20.9 inches; making it the 6th snowiest December on record.
The Blizzard of 2006 buried all of Denver under a heavy blanket of snow that measured more than 2 feet in many areas. More images from the storm can be found at the Denver Weather Examiner - click on the image to go there. (ThorntonWeather.com)
Leading up to the Christmas holidays of 2006 the weather was nothing extraordinary in the Mile High City – until the 20th of the month. Temperatures at the middle of the month had entered into the 60’s and Denver residents were enjoying the warmth.
A few short days later, that all changed in a big way. A slow moving low pressure system coupled with upslope flow and copious amounts of moisture provided the perfect setup for a historical winter storm whose effects would be felt for months. Snow began falling on the morning of the 20th and by the early afternoon blizzard conditions began to set in and it was obvious we were in for one heck of a storm.
Businesses shut down early on the afternoon of the 20th in order to allow their employees extra time to make it home safe but by then a foot or more of snow had fallen across the Front Range. The governor called out the Colorado National Guard to help rescue stranded motorists who were in turn transported to area Red Cross shelters to wait out the storm.
Every major interstate and highway in and out of Denver was shut down and RTD suspended all service in the city for the first time since 2003. Mail service on the 21st was canceled entirely as even the mail carriers couldn’t make their way to their appointed rounds. Most area businesses were forced to shut down on the 21st as employees couldn’t even make it out of their housing developments to get to work.
December 20 to December 26 - This week in Denver weather history
The week leading up to Christmas is hectic enough but when you through in severe weather, it can be overwhelming. This week marks a number of notable weather events in Denver weather history but two stand out. Most recently was the storm three years ago that became the seventh biggest snowstorm in Denver weather history. Of course probably the most memorable for longtime Denver residents is the Christmas Eve storm of 1982 that buried the city for the holiday and for days afterwards.
In 1924…a prolonged cold spell occurred after mild temperatures during the first half of the month. Most low temperatures dipped below zero with the coldest reading of 15 degrees below zero occurring on the 24th. The high temperature of only 5 degrees on the 18th was a record low maximum for the date.
18-24
In 1998…a vigorous cold front with north winds gusting as high as 38 mph at Denver International Airport on the 18th dropped temperatures from a high of 51 degrees to a low of just 6 degrees before midnight. The arctic air mass that settled over metro Denver produced intermittent light snow and a week-long protracted cold spell that caused low temperatures to plunge well below zero for 6 consecutive nights. The coldest temperature was 19 degrees below zero on the morning of the 22nd. High temperatures climbed only into the single digits on 4 consecutive days…from the 19th through the 22nd. At least 15 people…mostly homeless… Were treated for hypothermia at area hospitals. The bitter cold weather was responsible…either directly or indirectly… For at least 5 fatalities. Three of the victims died directly from exposure. The cold weather also caused intermittent power outages. Following the cold snap… Thawing water pipes cracked and burst in several homes and businesses…causing extensive damage. Only one temperature record was set. The high temperature of only 7 degrees on the 19th set a record low maximum for the date.
19-20
In 1982…high winds buffeted the eastern foothills. At midday on the 19th…gusts of 75 to 80 mph were recorded in the Table Mesa area of Boulder. A gust to 62 mph was clocked in Boulder on the evening of the 20th.
In 1989…strong winds howled at mountain top level in clear creek and Gilpin counties. Speeds reached 97 mph on the summit of Squaw Mountain and 84 mph one mile south of Rollinsville. Northwest winds gusted 35 mph at Stapleton International Airport on the 20th.
19-23
In 1990…a surge of very cold arctic air invaded metro Denver. Many temperature records were broken as the mercury remained at or below zero for 85.5 hours at Stapleton International Airport…making it the third longest period of subzero readings in 118 years of record keeping. On the morning of the 22nd…the mercury plunged to 25 degrees below zero…which equaled the all time record low temperature for the month set on December 24…1876. In the foothills southwest of Denver at tiny town…the mercury plunged to 33 degrees below zero on the morning of the 21st. On the same morning at Castle Rock the temperature dipped to 26 degrees below zero. During the period…other daily temperature records were set at Denver…including: record low maximum of 3 degrees below zero on the 20th and a record low of 17 degrees below zero on the 23rd. The record low was equaled with 16 degrees below zero on the 20th and 21 degrees below zero on the 21st. Snowfall totaled 2.7 inches at Stapleton International Airport from the 19th through the 21st.
20
In 1894…southwest winds were sustained to 40 mph with gusts to 48 mph. The Chinook winds warmed the temperature to a maximum of 69 degrees…which was a record high temperature for the date. The minimum temperature dipped to only 33 degrees.
In 1903…northwest Chinook winds sustained to 54 mph with gusts to 60 mph warmed the temperature to a high of 58 degrees.
In 1948…strong winds occurred along the eastern foothills from Boulder north. Wind gusts to 45 mph were recorded at Valmont with a gust to 30 mph at Boulder airport. Some damage occurred. Wind gusts to 50 mph caused some blowing dust at Stapleton Airport.
In 1957…strong Chinook winds…gusting to 51 mph from the northwest…warmed the afternoon temperature to a high of 54 degrees.
In 1981 high winds were reported in the foothills with a peak gust of 87 mph recorded at Wondervu.
In 1992…strong Chinook winds raked the eastern foothills with 69 mph recorded at Table Mesa in south Boulder. Southwest winds gusted to only 21 mph at Stapleton International Airport.
In 1996…five construction workers were injured…two seriously…when a sudden wind gust blew over a 30-foot- high retaining wall they were working on in western Lakewood. The scaffolding they were standing on collapsed…and some were pinned under the rubble for 15 minutes. Wind gusts of 60 to 75 mph were reported in the area. Southwest winds gusted to only 24 mph at Denver International Airport.
In 2004…strong downslope winds developed over the eastern mountain slopes and spread over metro Denver. Peak wind gusts approached 100 mph along the foothills of Boulder County. In superior…a 1200-square-foot section of roof was peeled off the gymnasium at monarch high school. Two semi-trailers were toppled on Colorado Highway 58 at McIntyre Street and another at c-470 and West Bowles Avenue. Two airplanes were damaged by wind-blown debris at Jefferson County airport. The high winds forced the closure of State Highway 93 between Golden and Boulder for approximately two hours. Insurance agents estimated 650 to 850 homes suffered wind damage in the Boulder and Louisville areas. In addition…downed trees and power lines left about 1000 residents…mainly in the Boulder area…without electricity. At least three people suffered minor injuries in the storm. Peak wind reports included: 95 mph in superior…92 mph at Jefferson County airport…85 mph in Golden…81 mph in Boulder…80 mph in Broomfield and Evergreen…and 79 mph in Louisville. West northwest winds gusted to 59 mph at Denver International Airport.
December 13 to December 19 - This week in Denver weather history
December can of course be cold and that is why Chinook winds are sometimes welcomed as they bring warm air to the Front Range. However, those winds can also cause a great deal of damage if they blow too hard and we see that in our look back at this week in Denver weather history. Particularly notable were winds on December 14th & 15th which caused accidents, toppled power poles and fences, ripped off roofs and more.
From the National Weather Service:
2-17
In 1939…more than 2 weeks of unseasonably warm weather made the month the 3rd warmest on record. Seven daily temperature records were set…including the all time record high temperature for the month of 79 degrees on the 5th. Daytime highs were balmy with 14 days in the 60’s and 70’s. Low temperatures dipped to freezing or below on only 5 days. The period was dry with only a trace of snow on the 12th.
3-15
In 1972…a protracted cold spell held an icy grip on metro Denver when maximum temperatures never reached above freezing for 10 consecutive days from the 3rd through the 12th and minimum temperatures dipped below zero on eleven consecutive days from the 5th through the 15th. Daily low temperature records were set with 15 degrees below zero on the 5th…17 degrees below zero on the 6th… And 18 degrees below zero on the 10th. Daily record low maximum readings were set with 3 degrees on the 6th and 6 degrees on the 9th. The very cold temperatures were caused by 3 to 5 inches of snow cover and a Canadian air mass.
9-13
In 1961…cold arctic air produced a protracted cold period. The temperature plunged to 16 degrees below zero on the 10th…establishing a new record for the date and the coldest reading since 25 degrees below zero on February 1… 1951. Low temperatures dipped below zero on 5 consecutive days with 9 degrees below zero on the 9th…16 below on the 10th…10 below on the 11th…and 12 below on both the 12th and 13th. High temperatures reached only 3 degrees on the 10th and 6 degrees on the 11th.
11-13
In 1940…5.4 inches of snow fell across downtown Denver. This was the only snowfall of the month. Temperatures were quite cold on the 13th with a high of 6 degrees and a low of 2 degrees below zero.
In 1984…up to 6 inches of new snow fell over metro Denver… Hampering flight operations at Stapleton International Airport where snowfall totaled 3.8 inches and east winds gusted to 25 mph on the 11th.
12-13
In 1916…snowfall totaled 5.7 inches in downtown Denver. Northeast winds were sustained to 27 mph with gusts to 28 mph on the 12th.
In 1992…an upslope snowstorm whitened metro Denver. While snowfall totaled only 4.1 inches at Stapleton International Airport…7 inches of new snow fell in Morrison…with 12 inches measured in Castle Rock. North winds gusted to 23 mph at Stapleton International Airport on the 13th.
In 1995…strong winds gusting to nearly 100 mph whipped across the foothills west of Denver. The strongest wind gusts included 98 mph atop Squaw Mountain and 75 mph at the Eldora Ski Area. West-northwest winds gusted to 41 mph at Denver International Airport on the 13th.
12-15
In 1921…downslope Chinook winds produced warm temperatures in the city…which resulted in 4 temperature records. High temperatures of 72 degrees on the 13th and 68 degrees on the 15th were record maximums for the dates. Low temperatures of 47 degrees on both the 12th and 13th were record high minimums for the dates. West winds were sustained to 38 mph on the 12th and to 25 mph on the 13th.
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In 1955…strong winds raked the foothills. A wind gust to 72 mph was recorded at rocky flats northwest of Denver. Some damage occurred in Boulder. Northwest winds were sustained to speeds of 23 mph at Stapleton Airport.
In 1988…high winds again occurred in Boulder where winds were clocked to 66 mph. West winds gusted to 43 mph at Stapleton International Airport.
13-14 in 1902…heavy snowfall totaled 6.4 inches in the city overnight. North winds were sustained to 18 mph with gusts to 20 mph on the 13th.
