Category Archives: Thornton Weather

Major snowstorm starts to hit Thornton, Blizzard Warning issued

A Blizzard Warning is in effect for all of eastern Colorado, including Thornton.
A Blizzard Warning is in effect for all of eastern Colorado, including Thornton.

Thornton and Denver are preparing for what will be its biggest snowstorm of the season today as the National Weather Service has now issued a Blizzard Warning for all of eastern Colorado.  The major storm we had been watching in recent days is now arriving over the Front Range and snow is starting to fall and will become widespread by 7:00am.  Initially the snow will melt as it hits the ground but as it gets heavier, it will begin to accumulate.

March is our snowiest month and this is setting up to be a classic late winter / early spring storm with lots of Pacific moisture and a Canadian cold front dipping down from the north.  Winds are now starting to come out of the east and northeast providing the required upslope conditions that will slow the storm down and hold it over the Front Range.

Between noon and about 9:00pm the snow will be at its heaviest as will the wind which will cause significant drifting and road travel will become treacherous – the afternoon rush hour is almost certainly going to be a big mess.  Road closures are likely to happen at some point later today, particularly south and east.  Areas along the Palmer Divide, the foothills and the south metro area will have the most snow with lower amounts as you move north.  The Denver metro area can look for snowfall totals between 8 and 16 inches while there could be up to two feet of snow in areas south and west.

Remember, a Blizzard Warning means that severe conditions are expected and winds can gust in excess of 35 mph coupled with significant snowfall.  Visibilities may be reduced to a quarter of a mile or less and travel will be extremely dangerous and is discouraged.  Be sure you are prepared if you do travel and should you get stranded, stay with your vehicle – do not head out and seek help!  Going through these storms is always a major task.  We ask that you please be careful if you are on the roads and if you have folks in your area that need a bit of help digging out, lend them a hand.

Since January, Denver has had 15% of its normal precipitation and for the snow season we are at a mere 41%.  While the snow will be troublesome, we are truly in need of moisture so this is a welcome sight in some respects.

Major storm continues on path, Denver could get 12+ inches of snow

A major spring storm could bring more than 12 inches of snow to Denver and Thornton.
A major spring storm could bring more than 12 inches of snow to Denver and Thornton.

The major winter storm we have been tracking for the last couple of days continues on its path toward Denver and the Front Range and before it is over, Denver could see more than a foot of snow.  The latest computer models indicate the storm is coming a bit further north than previously thought which increases the changes for what will be a very significant snow event for us. 

Snow in the mountains tonight will begin to spread to Denver and the Front Range Thursday morning and it will last through Thursday evening and beyond.  Highlighting the significance of the storm, the National Weather Service has issued a Winter Storm Warning (see below for text of warning) for all of northeastern Colorado including Denver. 

The NWS is forecasting snow totals from 8 to 15 inches for the metro area (see image below) and from 1 to 2 feet along the Palmer Divide.  I think that may be a bit optimistic myself but there is little doubt we are in for our biggest storm of the snow season.  Areas south and west like Highlands Ranch, Parker and Golden will almost certainly experience the most snow in the metro area.  See the image below for potential snow totals.

Continue reading Major storm continues on path, Denver could get 12+ inches of snow

Winter Storm Warning issued in anticipation of major storm

A major winter storm will hit Denver and the Front Range Thursday morning where some areas will be measuring snow in feet.
A major winter storm will hit Denver and the Front Range Thursday morning where some areas will be measuring snow in feet.

The National Weather Service has issued a Winter Storm Warning for Denver and much of northeastern Colorado in anticipation of a significant storm now approaching the state.  The warning takes the place of the previously issued watch and signifies the increased potential for a major snow event.  The warning goes into effect at 6:00am Thursday morning and runs through 6:00am Friday.

Computer models are beginning to coalesce around solutions that involve snow amounts that could exceed a foot along the Palmer Divide and the foothills.  Snow will begin falling in the foothills in the morning and by midday will encompass the entire Front Range.  By the time the storm ends, much of the metro area will have in excess of six inches of snow.  Tomorrow afternoon’s commute is almost certainly going to be a rough one.

The spring snowstorm could be our biggest storm to date for the 2008 – 2009 winter season.  We are desperately in need of moisture so while it may be troublesome, we really need the precipitation. 

Click here to get all the details on our warning page.

Astronaut Harrison Schmitt: Climate change alarmists ‘intentionally mislead’

Dr. Harrison "Jack" Schmitt as a trained geologist was the first scientist-astronaut and walked on the moon with the Apollo 17 lunar mission.
Dr. Harrison "Jack" Schmitt as a trained geologist was the first scientist-astronaut and walked on the moon with the Apollo 17 lunar mission.

Last month Apollo 17 astronaut and moonwalker Harrison Schmitt added his voice to the growing chorus of scientists speaking out against the anthropogenic [manmade] global warming (AGW) theory.  In strongly worded comments he said the theory was a ‘political tool.’  Now, in a speech at the International Conference on Climate Change he outlined his argument in great detail saying, “the science of climate change and its causes is not settled.”

Schmitt recalled as a child in Silver City, New Mexico helping his father, also a geologist, take rain measurements.  Those early experiments spurred the former astronaut’s interest in earth sciences at an early age.  He recalled how later in life, while on the surface of the moon, he made weather forecasts for the southern hemisphere of the earth. 
 
In wide ranging commentary, Dr. Schmitt made a point by point argument against many of the things that global warming advocates point to in support of the theory.  In a similar vein to his comments last month, he continued to admonish scientists and politicians that have politicized the issue and said those that disagree do have a battle ahead of them. 

Get the rest of this story on Examiner.com.

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

Four weather records broken in recent days

Sunny skies on Wednesday, March 4th helped Denver break a 137 year old high temperature record.
Sunny skies on Wednesday, March 4th helped Denver break a 137 year old high temperature record.

Denver officially broke the high temperature record on Wednesday, March 4th.  At 12:40pm the temperature at Denver International Airport reached 76 degrees, breaking the old record of 74 degrees set in 1872.  

This marks the 4th weather record we have broken in just the week. In addition to Wednesday’s mark, we have had:

We are very dry right now and could really use some significant precipitation as snowfall totals are less than half of what they normally are by this time of year.  Is there hope?  We remember back to 2003 when we were in a similar dry condition and two major storms helped to turn things around.  Click here to read about that on Examiner.com.

Are these really records and is it fair to compare these measurements with historical data?  Check out our Examiner.com investigation to see why some say these records should have an asterisk attached to them. 

Do Denver weather and climate records have an asterisk attached?

The old Stapleton International Airport site and Denver International Airport are separated by 12 miles.  Is it accurate tto compare weather between the two locations?
The old Stapleton International Airport site and Denver International Airport are separated by 12 miles. Is it accurate to compare weather between the two locations?

February 2009 is Denver’s least snowiest February on record.  A new record high temperature is recorded on January 21, 2009.  Record low temperatures are recorded on December 14th and 15th of last year

These announcements are common and we all take notice when we hear them and they make for great water cooler chat topics but are these claims accurate? 

In 1995 Denver finally opened its new airport, Denver International Airport, out on the plains east of the city.  This new facility, 12 miles as the crow flies northeast of the old Stapleton International Airport, moved the airport from an urban environment to a rural one and more than 19 miles from the center of Denver.  Following that move, the National Weather Service (NWS) began taking some of its official measurements at the glistening new airport.  In doing so, some say Denver’s climate records have forever been altered and as such any weather record should have an asterisk attached to it. 

On Examiner.com we have launched a three part investigative series on this topic.  It is a fascinating read – click here to read the rest of the story.

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

Denver officially breaks high temperature record for March 2nd

Denver officially set a new record high temperature for March 2nd.
Denver officially set a new record high temperature for March 2nd.

Updated, 5:30pm:  Denver’s official high temperature today reached 74 degrees at 3:08pm, beating the old record of 72 degrees by two.

Original post, 2:39pm:  Denver has officially broken the high temperature record for today, March 2nd.  At 1:52pm the thermometer at Denver International Airport reached 73 degrees, besting the old record of 72 degrees set way back in 1901.  Here in Thornton we were a touch warmer reaching a high of 74.1 degrees.

This afternoon there is a chance the temperature could go a degree or two higher thus further increasing the record.

Is this really a record?  Since moving Denver’s official weather recording station to DIA, many weather enthusiasts believe our weather and climate records are being unduly altered.  Examiner.com just launched an investigative feature into this problem today – check out part 1 of our series on Examiner.com:  Do Denver weather and climate records have an asterisk attached?

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

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

Looking at this week in Denver weather history, it is easy to see why March is known as Denver’s snowiest month. There are numerous instances of major winter storms dumping snow on the city that was measured not in inches – but feet!

From the National Weather Service:

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.

29-1

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.

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

Storm spotter training gets started this coming week

Want to be an official storm spotter or maybe just want to learn more about severe weather?  Here’s your chance!
Want to be an official storm spotter or maybe just want to learn more about severe weather? Here’s your chance!

We have written before about the great opportunity the National Weather Service provides by giving storm spotter training during the start of the severe weather season.  That time is now here and training sessions start in the coming week and new sessions have been added since we last reported on the topic.

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. 

Don’t think tornadoes can hit Thornton?  Click here for a look back at the June 3, 1981 twister that hit the city!

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:

  • Basics of thunderstorm development
  • Fundamentals of storm structure
  • Identifying potential severe weather features
  • Information to report
  • How to report information
  • Basic severe weather safety

To learn more about the program, see here:  http://www.crh.noaa.gov/bou/awebphp/spotter.php

Here are the dates, times and locations announced thus far (click here to go to the NWS site for the latest). 

 
March, 2009 – Upcoming
Day City, State Time Location
05 Greeley, CO
(Weld County)
6:30pm MST Weld County Training Facility 1104 H Street Greeley, CO
  Contact Information: rrudisill@co.weld.co.us
19 Westminster, CO
(Adams County)
6:30pm MDT Front Range Community College 3645 West 112th Ave. room C0804 Westminster, CO 80031
  Contact Information: Ryan.Girard@frontrange.edu
23 Julesburg, CO
(Sedgwick County)
6:30pm MDT Julesburg Fire Hall
  Contact Information: ptsports57@yahoo.com
24 Holyoke, CO
(Phillips County)
9:00am MDT location to be determined.
  Contact Information: Philcoadmin@pctelcom.coop
24 Haxtun, CO
(Phillips County)
6:30pm MDT location to be determined
  Contact Information: fix5@haxtuntel.net
30 Westminster, CO
(Adams County)
2:30pm MDT Front Range Community College 3645 West 112th Ave. room C0804 Westminster, CO 80031
  Contact Information: Ryan.Girard@frontrange.edu
31 Sterling, CO
(Logan County)
6:30pm MDT Sterling Fire Hall Community room, 420 S. Oak Street
  Contact Information: OWENS@sterlingcolo.com
 
April, 2009 – Upcoming
Day City, State Time Location
02 Loveland, CO
(Larimer County)
9:00am MDT Rialto Theater 228 East 4th Street Loveland, CO 80537
  Contact Information: mialyp@ci.loveland.co.us
02 Fort Collins, CO
(Larimer County)
7:00pm MDT City Council Chambers 300 Laporte Avenue Fort Collins, CO
  Contact Information: nilssoed@co.larimer.co.us
06 Brush, CO
(Morgan County)
7:00pm MDT Morgan County Fairgrounds Ellsworth Street, Brush
  Contact Information: senfante@co.morgan.co.us
14 Commerce City, CO
(Adams County)
1:00pm MDT Adams County Sheriff’s Dept. 4201 East 72nd Avenue Commerce City, CO 80022
  Contact Information: JSchwarz@co.adams.co.us
22 Akron, CO
(Washington County)
6:30pm MDT Washington County Fairgrounds Event Center, Akron
  Contact Information: mmcaleb@co.washington.co.us
23 Parker, CO
(Douglas County)
7:00pm MDT Parker Fire District HQ 10235 Parkglenn Way Parker, CO
  Contact Information: kc0mht@msn.com
 
May, 2009 – Upcoming
Day City, State Time Location
02 Denver, CO
(Denver County)
9:00am MDT Denver Police Station 3 1625 South University, Denver
  Contact Information: Mike.Rappe@denvergov.org

Denver and Thornton’s March 2009 climatological preview

Denver and Thornton's March 2009 climatological preview
Denver and Thornton's March 2009 climatological preview

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.

These changes are due to Marches “in between” status – elements during the month have much in common with winter and spring. In addition to arctic fronts, Pacific storms frequently move across Colorado from the west and warm moist air streams up from the Gulf of Mexico northeastward into the state. When these cold fronts collide with the warmer air masses the result can be some crazy weather.

Get all the details in our March 2009 climatological preview here.