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National Storm Chaser Convention hits town – Severe weather season is almost here

Denver will host the 11th annual National Storm Chaser Convention from February 13th to February 15th.
Denver will host the 11th annual National Storm Chaser Convention from February 13th to February 15th.

The 11th annual National Storm Chaser Convention hits town this weekend as some of the nation’s premier storm chasers converge on Denver.  Whether you are a seasoned chaser or just someone with an interest in the weather, this is an extraordinary opportunity to mingle with and hear from some of the biggest names in severe weather.  The event is organized every year by two of the biggest names in storm chasing – Roger Hill and Tim Samaras.

Held at the Red Lion Inn in Parker, the event kicks off Friday night with an ice-breaker and a chance to mingle with other weather enthusiasts.  Saturday morning the event starts in earnest with an extraordinary slate of speakers covering an array of topics.  Saturday night is the infamous video night where videos and photos from last year’s record setting year of tornadoes are sure to play a big part and Sunday the convention continues with additional speakers. 

Some of the speakers this year include:

Also notable, the National Weather Service will be holding a free storm spotter training session Sunday afternoon.  These are a great way to learn much more about severe weather.  Click here to learn more about storm spotter training and what it involves.

You can learn more about this great event and see the complete agenda on the convention website at www.chaserconvention.com.  

Here’s a little storm chasing video to get you pumped up for the event:

February 8 to February 14 – This week in Denver weather history

February 8 to February 14 - This week in Denver weather history.
February 8 to February 14 - This week in Denver weather history.

Our look back at this week in Denver weather history contains many of the severe weather conditions we would expect to see – high speed winds, arctic cold, big time snowstorms, etc.  Most notable is the coldest February temperature ever recorded – 25 degrees below zero. 

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.

Continue reading February 8 to February 14 – This week in Denver weather history

Climate scientist knockdown – William Gray versus James Hansen

Battle of the climate scientists - William Gray versus James Hansen.
Battle of the climate scientists - William Gray versus James Hansen.

Certainly the debate over manmade climate change and global warming can get heated at times (pun intended).  Today that went to a new level pitting William (Bill) Gray, Professor Emeritus of Colorado State University who is best known for his hurricane forecasts against James Hansen of NASA’s GISS division and devout climate change advocate.

Bill Gray has long been warning that the threat of manmade climate change is not real.  In his own words, “I am of the opinion that this is one of the greatest hoaxes ever perpetrated on the American people.  I’ve been in meteorology over 50 years. I’ve worked damn hard, and I’ve been around. My feeling is some of us older guys who’ve been around have not been asked about this. It’s sort of a baby boomer, yuppie thing.”

On the other side James Hansen has become Al Gore’s best friend thanks to his sometimes outlandish claims about the effects of global warming.  He recently warned that President Obama has ‘four years to save the world’ and was quoted as saying, “We cannot afford to put off change any longer.  We have to get on a new path within this new administration. We have only four years left for Obama to set an example to the rest of the world. America must take the lead.”

The latest battle is over the decision of the American Meteorological Society (AMS) to grant its highest award, the Rossby Research Medal, to Hansen.  In a seven page letter to the AMS titled “On The Hijacking of the American Meteorological Society,” Mr. Hansen no longer seems willing to be outshouted in the debate over global warming. 

This is great reading and very interesting debate – check out the complete article and read the letter on our Examiner.com pages!  There is also a great slideshow of the key players in the global warming debate.

For all the details, read the rest of this story on our Denver Weather Examiner page. Examiner.com - Get inside Denver weather

Red Flag Warning for most of Colorado highlights extreme fire danger

The entire eastern half of Colorado is under a Red Flag Warning through Friday evening.
The entire eastern half of Colorado is under a Red Flag Warning through Friday evening.

The National Weather Service has updated the Red Flag Warning and it will now go into effect at 9:00am today and run through 9:00pm.  Further, the warning now covers the entire eastern half of the state of Colorado and in fact extends to the south and east into parts of Nebraska, Kansas, Oklahoma, Texas and New Mexico.  This of course covers the entire Denver metro area and the Front Range. 

The extension and widening of the warning should serve to really drive home how dry things are and how serious the fire conditions are.  Please be sure to take appropriate precautions as we certainly would like to avoid any wildfires.

RED FLAG WARNING
NATIONAL WEATHER SERVICE DENVER CO
456 AM MST FRI FEB 6 2009

…Dry and windy conditions across the plains and lower foothills today…

Very dry air will combine with strong winds to produce increased fire danger over the foothills and plains of northeast Colorado today. Winds will gust as high as 40 mph on the plains this afternoon with gusts to 50 mph in the foothills. Minimum humidities will range from 10 to 15 percent. Conditions will improve on the plains around sunset…with warm and breezy conditions lingering in and near the foothills through the early evening hours.

…Red Flag Warning now in effect from 9 am this morning to 9 pm mst this evening for gusty winds and low humidities…

The Red Flag Warning is now in effect from 9 am this morning to 9 pm mst this evening. A Red Flag Warning is now in effect for all of the plains and foothills areas of eastern Colorado… Including fire weather zones 235…236…and 238 through 251.

West winds of 20 to 35 mph will become widespread in and near the southern Front Range foothills this morning…and spread across the plains by afternoon. Gusts as high as 50 mph are possible in the foothills. Relative humidities will drop into the 8 to 15 percent range. The combination of the gusty winds…low humidities and dry fuels will create very high fire danger. The gusty winds will decrease and the relative humidities will increase this evening.

A Red Flag Warning means that critical fire weather conditions are either occurring or imminent. Please advise the appropriate officials and fire crews in the field of this Red Flag Warning.

The weather is nice but what Denver needs is moisture

The Denver weather has been nice but we are extremely dry and in need of some moisture.
The Denver weather has been nice but we are extremely dry and in need of some moisture.

This week we have had some extraordinarily nice weather and it has been great.  The mountains are certainly having a great year for snow with all of the major basins exceeding 100% of average for snowpack.  However, here along the Front Range and the plains, we are bone dry and well below normal for snowfall. 

As of today, Denver has received only half of its normal amount of snow for this point in the snow season which runs from July through June.  By the first of February, we normally should have received 33.3 inches.  To date for the 2008 – 2009 season we have received a mere 16.9 inches of snow as measured at Denver International Airport.  Closer to the central part of the city, Stapleton has been even drier with only 13.1 inches of the white stuff to date. 

For a complete look at how bleak the moisture has been along the Front Range, check out the details in our Examiner.com story.

For all the details, read the rest of this story on our Denver Weather Examiner page. Examiner.com - Get inside Denver weather

February 1 to February 7 – This week in Denver weather history

February 1 to February 7 - This week in Denver weather history
February 1 to February 7 - This week in Denver weather history

A look back at this week in Denver weather history shows the wide variety of weather conditions that we can receive.  Everything from warm spring-like days to high speed damaging winds to protracted bone chilling Arctic cold spells is evident. 

26-1 

IN 1888…A PROTRACTED WARM SPELL LASTED A WEEK.  MAXIMUM TEMPERATURES RANGED FROM 62 DEGREES ON THE 29TH TO AN ALL TIME RECORD HIGH FOR THE MONTH OF 76 DEGREES ON THE 27TH.  DAILY RECORD HIGH TEMPERATURES OF 76…69… AND 71 OCCURRED ON THE 27TH…28TH… AND 30TH RESPECTIVELY. RECORD HIGH MINIMUM TEMPERATURES OF 47 AND 34 OCCURRED ON THE 26TH AND 27TH.

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.

31-1 

IN 1963…HIGH WINDS STRUCK METRO DENVER.  THE STRONG CHINOOK WINDS REACHED 101 MPH IN LITTLETON…80 MPH IN DENVER…AND 90 MPH AT ROCKY FLATS.  AMONG THE HARDEST HIT AREAS WERE BOULDER WHERE BUILDINGS UNDER CONSTRUCTION WERE BLOWN DOWN…PORCHES AND ROOFS BLOWN OFF BUILDINGS… AND POWER LINES DAMAGED.  DAMAGE TOTALED 100 THOUSAND DOLLARS IN BOULDER ALONE.  IN OTHER AREAS…UTILITY LINES WERE DAMAGED AND MANY SIGNS…ANTENNAS… AND ROAD MARKERS WERE BLOWN DOWN.  AT STAPLETON AIRPORT…WEST WINDS GUSTED TO 44 MPH ON THE 31ST AND 66 MPH ON THE 1ST.  THE CHINOOK WINDS WARMED MAXIMUM TEMPERATURES TO 65 DEGREES ON THE 31ST AND TO 70 DEGREES ON THE 1ST.

Continue reading February 1 to February 7 – This week in Denver weather history

A look at Super Bowl weather history and some interesting tornado statistics for it

The biggest sporting event of the year is of course the Super Bowl and no doubt this year’s matchup between the Pittsburgh Steelers and the Arizona Cardinals is sure to be no different.  Super Bowl XLIII will be held in Tampa Bay, Florida and the weather forecast is looking to be just about perfect – see our game day forecast below.

What about Super Bowl’s in the past?  Was there ever any notable weather during the big game?  You bet there was.  Here are some fun facts (courtesy wx-man.com):

  • 17 of 42 Super Bowls played indoors
  • 16 of 42 Super Bowls had a trace or more of rain nearby
  • 2 Super Bowls had snow on game day (1982,2006)
  • 1 Super Bowl played during an ice storm (2000)
  • Warmest high temperature of 82° (1973,2003)
  • Coldest high temp for dome game 16° (1982)
  • Coldest high temp for non-dome game 49° (1985)
  • Wettest Super Bowl .92 inches (2007)
  • Outside games with high wind gust (1980, 1984, 1989,2007)

You will notice there isn’t really any mention of severe weather in those statistics. The NFL has been pretty fortunate on that front with nothing particularly notable – rain always seems to be the biggest threat. 

For a more in depth look at severe weather in February in Florida, the Super Bowl forecast and some interesting tornado statistics, please visit our Examiner.com story.

For all the details, read the rest of this story on our Denver Weather Examiner page. Examiner.com - Get inside Denver weather 

Founder of The Weather Channel warns of ‘dramatic turn toward a colder climate’

John Coleman, founder of the Weather Channel, is an outspoken critic of the global warming theory.
John Coleman, founder of the Weather Channel, is an outspoken critic of the global warming theory.

John Coleman is the founder of The Weather Channel and an outspoken critic of the global warming theory.  In years past he has called global warming “the greatest scam in history” and has called for suing Al Gore and others that hype the theory in order to force a debate on the merits of it. 

Coleman is now a meteorologist for KUSI in San Diego and yesterday he offered a story that he called, “The Amazing Story Behind the Global Warming Scam.”

As he has done in the past, Mr. Coleman advocates that global warming is a hoax and nothing more.  He says we have taken a “dramatic turn toward a colder climate. The last two bitter winters have lead to a rise in public awareness that CO2 is not a pollutant and is not a significant greenhouse gas that is triggering runaway global warming.”  

Mr. Coleman provides some interesting background on how former Vice President Al Gore came to become such an advocate for the manmade climate change theory. 

For all the details, read the rest of this story on our Denver Weather Examiner page. Examiner.com - Get inside Denver weather

Meteorologists know nothing about climate change

What do meteorologists know about climate change?
What do meteorologists know about climate change?

A pretty interesting headline isn’t that?  I admit that is probably a bit more sensationalistic than what is really called for. However, that would seem to be one of the conclusions from the author and analyst of a recent survey.

3,146 earth scientists from various areas of expertise were surveyed for their opinions and in many ways, the data was not surprising.  Two questions were key to the study:

Have mean global temperatures risen compared to pre-1800s levels?

Has human activity been a significant factor in changing mean global temperatures?

For all the details, read the rest of this story on our Denver Weather Examiner page. Examiner.com - Get inside Denver weather

January 25 to January 31 – This week in Denver weather history

January 25 to January 31 - This week in Denver weather history.
January 25 to January 31 - This week in Denver weather history.

A very eventful week in Denver weather history.  Among the notable items – the longest period of snow on record, the highest wind gust ever in the metro area (147mph) and numerous blizzards that caused a variety of problems.

22-26

IN 1948…THE LONGEST PERIOD OF SNOWFALL ON RECORD (92 HOURS AND 3 MINUTES) OCCURRED IN DOWNTOWN DENVER WHERE A TOTAL OF 13.6 INCHES OF SNOW FELL.  AT STAPLETON AIRPORT…19.0 INCHES OF SNOW FELL…MAKING IT THE HEAVIEST SNOW IN JANUARY AND THE 5TH HEAVIEST SNOW OF RECORD AT THAT TIME.  NORTH WINDS WERE SUSTAINED TO A VELOCITY OF 23 MPH ON THE 25TH…BUT GENERALLY THE WINDS WERE LIGHT THROUGHOUT THE STORM.  THE SNOW DISRUPTED TRAFFIC…BUT STREET CLEARING WAS BEGUN SOON AFTER IT BECAME APPARENT THAT THE SNOW WOULD BE HEAVY.  OVER THE 5 DAYS…TEMPERATURES RANGED FROM A HIGH OF 48 DEGREES ON THE 22ND TO A LOW OF 1 DEGREE ON THE 26TH.  MOST READINGS WERE IN THE TEENS AND 20`S DURING THE STORM.

24-25

IN 1916…A TRACE OF LIGHT RAIN…RARE IN DENVER FOR JANUARY…  OCCURRED ON BOTH DAYS.
 
IN 1946…HIGH WINDS OCCURRED IN BOULDER AND ALONG THE FOOTHILLS TO THE NORTH.  A WIND GUST TO 72 MPH WAS RECORDED AT VALMONT.
 
IN 1947…STRONG WINDS WERE MEASURED IN BOULDER.  HOURLY WIND GUSTS AVERAGED 72 MPH AT VALMONT EAST OF BOULDER.
 
IN 1950…HEAVY SNOWFALL TOTALED 7.1 INCHES AT STAPLETON AIRPORT AND 6.8 INCHES IN DOWNTOWN DENVER.

Continue reading January 25 to January 31 – This week in Denver weather history