Category Archives: Thornton Weather

Slideshow of images from the blue moon and other random pictures

A New Year's Eve blue moon over Thornton. (ThorntonWeather.com)
A New Year's Eve blue moon over Thornton. (ThorntonWeather.com)

Thornton was treated to a rare New Year’s Eve blue moon and clear weather conditions to allow near perfect viewing of it.  While blue moons are relatively common occuring roughly every 2 1/2 years, they only occur on New Year’s Eve every 19 years. 

The first couple images in the slideshow below are from that night and the others from the night of New Year’s Day.  The other photos were taken the morning of January 2nd as the moon set in the west and then a few pictures of stuff in the ThorntonWeather.com backyard are included.

Remember, if you ever capture great images around Thornton, feel free to email them to us (info@thorntonweather.com) and we will share them on ThorntonWeather.com.

December 27 to January 2 – This week in Denver weather history

December 27 to January 2 - This week in Denver weather history
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.

Continue reading December 27 to January 2 – This week in Denver weather history

A holiday message from ThorntonWeather.com

Happy holidays from ThorntonWeather.com!  Image of the old Eastlake grain elevator, Christmas Eve 2009. (ThorntonWeather.com)
Happy holidays from ThorntonWeather.com! Image of the old Eastlake grain elevator, Christmas Eve 2009. (ThorntonWeather.com)

Mother Nature was kind enough to bring us a white Christmas this year and the city looks beautiful covered in a blanket of white as we sit here and write this.  The holidays are a special time of year for us as we are sure it is for all of our visitors. 

Other than a brief interruption courtesy of the U.S. Navy, we are life-long residents of the north metro area and have lived in Thornton more than 11 years.  We are proud to call the city our home and believe it is one of the finest communities in the state.  Over the past year ThorntonWeather.com has grown by leaps and bounds and thousands of area residents get their weather from us.  We provide the site as a public service and it makes us happy to see so many people trust us to provide them with the latest news, information and forecasts. 

Please take some time out of all the hustle and bustle of the coming days to remember our brave soldiers, sailors, airmen and Marines who are serving and protecting our nation at home and abroad.  Many of them won’t be with their families this holiday and it is important that we keep them in our prayers and let them know that we are thinking about them. May God watch over all of them! 

We wish all of you a safe and happy holiday season and new year and thank you for using ThorntonWeather.com.  Having traveled the world, we truly believe there is nothing like a ‘Colorado Christmas’ and to demonstrate that, we offer up this video as proof.  Happy holidays!

Track Santa Claus right here on ThorntonWeather.com

Santa Claus has begun his whirlwind trip around the globe to deliver toys to all the good little boys and girls! For more than 50 years the North American Aerospace Defense Command (NORAD) has tracked Kris Kringle on Christmas Eve and helped to ensure he completes his journey safely.

ThorntonWeather.com is pleased to be able to provide live Santa tracking from NORAD right here on our site!  Click here to check it out and be sure to come back often to see where Kris Kringle is at!

Winter storm arrives in Thornton, snow expected throughout the day

Old Man Winter arrives in Thornton.  December 23, 2009.  View more images from the weather in the slideshow by clicking on the picture. Image courtesy Shannon Vermilye.
Old Man Winter arrives in Thornton. December 23, 2009. Image courtesy Shannon Vermilye. Click on the picture to view our slideshow of more photos of the weather.

Update, 1:45pm – A white Christmas with snow the ground is an obvious certainty at this point. Most areas around the Denver metro area have received from 3 to 4 inches of snow with higher amounts in the foothills and in Larimer and Weld counties.

The snow continues to fall and will do so throughout the afternoon although we may see a bit of a lull for a short while. Metro area freeways are mainly wet at this point but that could change this evening and tonight when temperatures start to drop.

This evening we will see the winds pick up setting up the potentially for blowing snow conditions that will cause some problems on the roads. Another round of heavier snow is expected to begin this evening and through tonight leading to additional accumulations of 1 to 3 inches. The snow will taper off in the early morning tomorrow and we will end the storm in the neighborhood of 4 to 8 inches total snow accumulation.

A Winter Weather Advisory remains in effect for the Front Range extending north beyond the Wyoming border and northeast and east to the Fort Morgan and Limon areas. Further east on the plains a Winter Storm Warning is in effect along the I-70 and I-76 corridors. Travel is likely to become hazardous through Nebraska and Kansas tonight.

Temperatures are the other major part of this storm system. High temperatures will remain quite cold and well below seasonal normals. Overnight lows for the next few nights will dip into the single digits.

If you haven’t done so, be sure to follow us on Twitter and become a fan on Facebook!  They are great ways to stay up to date with the latest weather news, forecasts and conditions!  You can also signup to receive the latest weather alerts and forecasts via email here.

As always, stay tuned to ThorntonWeather.com for truly local weather for Thornton. 

Original story, 8:25am – Old Man Winter was a couple days late but he has arrived in the Mile High City overnight. As expected he has brought with him plenty of cold and a bit of snow just in time to give Denver a white Christmas.

Overnight last night most areas across the metro area reported 1 to 2 inches of snow. Areas to the north like Greeley and Fort Collins have received a bit more in the neighborhood of 3 to 5 inches thanks to a decent snow band moving through those areas.

That snow band to the north will begin to move to the south and arrive over Denver this morning increasing our snow totals. We are expecting 1 to 3 inches additional daytime accumulation today and another 1 to 3 overnight Wednesday. This puts us on target for snow totals for the event of 3 to 8 inches.

Temperatures will remain very cold today with the high only reaching the mid 20’s. Tonight winds will pick up and blowing snow could become problematic, particularly in areas east of I-25. Overnight lows will plummet into the single digits.

A Winter Weather Advisory remains in effect for the Front Range and mountain areas east of the Continental Divide. When the winds pick up this evening they will lead to blowing and drifting snow and likely impact road travel so caution is advised.

Thursday temperatures remain cold and in the teens. We won’t see much more accumulation but windy conditions will cause what snow has already fallen to blow around, particularly in open areas.

Christmas Day we will see a return of some sun but temperatures remain in the low 20’s. Some of the latest models did introduce a slight chance for flurries so we will keep an eye on that.

Beyond the holiday, warming will gradually continue and the general weather pattern will be dry. Temperatures though are expected to remain a bit chilly and below seasonal norms.

Get ready – Old Man Winter to arrive in Thornton tonight

Current weather advisories for northeastern Colorado.  Click the image for the latest.
Current weather advisories for northeastern Colorado. Click the image for the latest.

Update, 5:30pm – The snow is still coming, it is just a little bit slower than originally anticipated.  A Winter Weather Advisory will go into effect at 8:00pm for the Front Range and a Winter Storm Warning will go into effect for the eastern plains. 

Snow will develop later this evening and we still expect to see 2 to 4 inches of snow by morning.  The snow will continue through Wednesday and when it ends we will have between 4 and 8 inches total accumulation. 

As discussed before (see below), the eastern plains are where the brunt of this storm is really going to hit.  Travel on I-70 from Limon through Kansas and I-76 from Sterling through Nebraska is likely to become hazardous later in the day tomorrow.

Original story, 4:14pm – ust in time to potentially snarl holiday travel, a winter storm is bearing down on Thornton and will have far-reaching impacts across the Great Plains. A variety of winter weather advisories and warnings have been issued stretching from Colorado through Kansas north through the Midwest to the Canadian border.

For Colorado, the storm has already begun to affect the southwestern part of the state where snow began falling earlier today. The Colorado Department of Transportation says that chain laws are in effect on US 160 and US 550. As the storm moves further into the state, similar restrictions can be expected.

In Denver, and for much of the Front Range, a Winter Weather Advisory is in effect from 8:00pm tonight through 5:00am Thursday. Snow will begin to develop this evening and continue throughout the day Wednesday before easing late Wednesday afternoon. Look for us to have 2 to 4 inches in the Denver area. By the time the storm is done, we are looking at 4 to 8 inches of total accumulation and with winds blowing from 10 to 20 mph, blowing and drifting snow is likely.

The real threat from this storm will be in areas east and northeast of Denver. The eastern plains of Colorado are forecast to receive 5 to 10 inches and the wide-open expanses and wind could lead to blizzard-like conditions. Travel on I-70 east of Limon through Kansas and I-76 northeast of Sterling through Nebraska will become difficult and possibly dangerous. A Winter Storm Warning is in effect for these areas.

This storm certainly won’t come anywhere near the level of the record-setting Christmas Eve Blizzard of 1982 however, it will virtually ensure that we have a white Christmas with snow on the ground. Temperatures will be bitterly cold Wednesday through Friday and it may be Sunday before we see them rebound to above freezing.

If you haven’t done so, be sure to follow us on Twitter and become a fan on Facebook!  They are great ways to stay up to date with the latest weather news, forecasts and conditions!

As always, stay tuned to ThorntonWeather.com for truly local weather for Thornton. 

Three years ago today – The seventh biggest snowstorm in Denver history

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)
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. 

There's more to this story on the Denver Weather Examiner's site!For much more about the storm and to see photos of the aftermath, check out the story on the Denver Weather Examiner.

December 20 to December 26 – This week in Denver weather history

December 20 to December 26 - This week in Denver weather history
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.

From the National Weather Service:

17-24

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.

Continue reading December 20 to December 26 – This week in Denver weather history

NOAA: Nighttime and winter tornadoes a real danger

Tornadoes can and do strike at night and during winter months.  Are you prepared?
Tornadoes can and do strike at night and during winter months. Are you prepared?

Tornadoes are one of nature’s most violent storms. Able to strike without warning, they bring death and destruction with frightening frequency. Twisters can be scary enough to just think about and when you consider one striking at night when you can’t see it and aren’t expecting it, the odds of survival diminish.

Over the last three years, there has been an average of 1297 tornadoes per year and on average 91 tornado-related deaths per year. While not as common during the winter months, tornadoes can and do occur every month of the year and they do strike at night.

Seeking to draw attention to the dangers nighttime tornadoes present, the National Oceanic and Atmospheric Administration (NOAA) and its National Weather Service announced an effort to increase awareness. In a press release today, the services said that with the El Niño conditions we are experiencing, Florida and the Gulf Coast region stand a greater risk of tornadoes.

NOAA reminded all residents of the United States that a NOAA All Hazards Radio is the first line in defense against not only tornadoes, but all natural disasters. Also announced were new severe weather outlooks that will be issued when conditions are favorable for such storms.

There's more to this story on the Denver Weather Examiner's site!Get all the details from the Natural Disasters Examiner about what the National Weather Service said and learn what steps you can take to protect you and your loved ones.