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Thornton, Colorado, USA
UpdatedTue, 29-Nov-2022 1:45am MST 
 

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Thornton’s weekend to offer up calm, dry conditions, temps near average

Friday, October 28th, 2022 5:01am MST

A pretty good looking fall weekend in store for us. We will enjoy a good bit of sun and mercury readings will be right near what we expect this time of year.

For Friday, we start out cold but then will warm up nicely. Sunny skies will be above as we top out near the 60 degree mark. Tonight, skies remain clear and lows will dip to below freezing.

Saturday continues the calm conditions and will again see highs near 60 degrees. We will be sunny in the morning then the afternoon will see some clouds arrive. Saturday night, partly clear skies will be above with overnight lows in the mid-30s.

Sunday will see some clouds early but those will dissipate pretty quickly. Look for highs again around 60 degrees.

Enjoy!

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October 2022 top shots: Monthly photo slideshow

Friday, October 28th, 2022 5:00am MST
A trail of golden aspen in the Colorado high country. (Patrick Martin Photography)

A trail of golden aspen in the Colorado high country. (Patrick Martin Photography)

October in Thornton can bring a wide variety of weather conditions, perfect for the photographer in all of us.

The month brings the changing of the colors at Colorado’s lower elevations and it is also is typically when we see our first freeze and first snow.

Couple those facts with our usual widely varying landscapes and wildlife and we have a month that is sure to bring in plenty of photo opportunities.

  • Slideshow updated October 28, 2022
  • To learn more about how to send your photo to us for inclusion in the slideshow, see below the slideshow.

Showcasing images captured by ThorntonWeather.com readers as well as some of our own, our monthly slideshow covers the entire gamut of weather-related imagery.

Sunsets, sunrises, wildlife and of course every type of weather condition are vividly depicted in images captured from yours and our cameras.

What is missing in the slideshow above?  Your photo!

Our monthly photo slideshow is going to feature images that we have taken but more importantly images that you have captured.  The photos can be of anything even remotely weather-related.

Landscapes, current conditions, wildlife, pets, kids.  Whimsical, newsy, artsy.  Taken at the zoo, some other area attraction, a local park, a national park or your backyard.  You name it, we want to see and share it!

Images can be taken in Thornton, Denver or anywhere across the extraordinary Centennial State.  We’ll even take some from out of state if we can tie it to Colorado somehow.

We’ll keep the criteria very open to interpretation with just about any image eligible to be shown in our slideshows.

What do you win for having your image in our slideshow?  We are just a ‘mom and pop’ outfit and make no money from our site so we really don’t have the means to provide prizes.  However you will have our undying gratitude and the satisfaction that your images are shared on the most popular website in Thornton.

To share you images with us and get them included in the slideshow just email them to us or share them with ThorntonWeather.com on any of the various social media outlets.  Links are provided below.

So come on, get those camera’s rolling!

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Cool and blustery conditions Thursday, chance for a shower

Thursday, October 27th, 2022 5:01am MST

Overnight did not bring any precipitation but we are seeing shower activity pickup to our northwest and some of that will move over yet this morning. After it passes, skies will begin to clear and we will dry out.

Cloudy skies start us off and will be with us through much of the morning. We do stand a decent chance to see a bit of rain, perhaps with some snow mixed in, through the morning hours. Little to no accumulation of snow is expected.

Breezy north winds will be seen for much of the day. After noon, skies will begin to clear and winds will gradually ease. High temperatures today will top out in the upper 40s.

Tonight, with clearing skies, temperatures will drop. Look for lows in the mid to upper 20s. A Freeze Watch has been issued so if you still have any sensitive vegetation outside, you will need to cover it or bring it inside.

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October 23 to October 29: This Week in Denver Weather History

Wednesday, October 26th, 2022 5:41am MST

This Week in Denver Weather History

It’s not quite Halloween but leading up to the holiday we see plenty of  ‘scary’ weather in our look back at this week in Denver weather history. High winds are relatively commonplace and so too are major snowstorms. One recent event in 1997 dumped 14 to 31 inches of the white stuff on the metro area.

From the National Weather Service:

18-23

In 2003…an extended warm spell resulted in 5 new temperature records. The high temperature of 84 degrees on the 18th equaled the record high for the date. High temperatures of 86 degrees on the 19th…83 degrees on the 21st…and 84 degrees on the 22nd were record highs for the dates. Low temperature of 49 degrees on the 23rd was a record high minimum for the date. Low temperatures during the period were in the 40’s and lower 50’s.

19-23

In 1906…heavy snowfall totaled 22.7 inches in the city over the 5 days. Rain changed to snow on the evening of the 19th…and snow continued through the late afternoon of the 23rd. The heaviest amount of snowfall…16.0 inches…fell from 8:00 pm on the 20th to 8:00 pm on the 22nd. The most snow on the ground was 13.3 inches on the evening of the 23rd. This was the first snow of the season and the only snow of the month. Winds during the storm were from the north at sustained speeds of 20 to 30 mph each day. Temperatures during the storm were generally in the 20’s.

22-23

In 1914…post-frontal rain changed to snow. Precipitation totaled 2.72 inches…most of which was in the form of moist snow which melted as it fell in the business section of the city. About 3 inches of snow was measured on lawns in the residential areas on the morning of the 24th. Official snowfall totaled only 0.4 inch downtown… But an estimated 8.0 inches of snow melted as it fell. North to northeast winds were sustained to 29 mph with gusts to 30 mph on both days.

In 1975…a vigorous cold front moving across metro Denver followed by strong northeast winds gusting to 52 mph produced billows of blowing dust and plunged the temperature 21 degrees in an hour. The surface visibility was reduced to 1/4 mile in blowing dust at Stapleton International Airport. The temperature cooled from a daily record high of 81 degrees to a low of 38 degrees by day’s end. The first snowfall of the season totaled 2.7 inches on the 23rd. This was the only measurable snow of the month at Stapleton International Airport.

In 1995…heavy snow fell on the Palmer Ridge south of Denver and in the foothills west of Denver where snow amounts ranged from 4 to 8 inches. Sedalia…south of Denver… Received 8 inches of snow. Winds strengthened on the plains and produced blizzard conditions…reducing surface visibilities to less than 1/4 mile. I-70 was closed from just east of Denver at Gun Club Road to the Kansas border. Ten inches of snow fell at Strasburg east of Denver where north winds at sustained speeds of 35 to 45 mph with gusts as high as 60 mph produced 2 to 4 foot drifts. Snowfall totaled only 2.2 inches at the site of the former Stapleton International Airport. North winds gusted to 51 mph at Denver International Airport.

23

In 1876…skies were fair…but winds were sustained to 48 mph.

In 1942…a major storm dumped 10.2 inches of snow over downtown Denver. Post-frontal northeast winds were sustained to only 13 mph.

In 1955…the first snowfall of the season and the only measurable snow of the month dumped 4.1 inches of snow on Stapleton Airport. This was the single heaviest October snowfall in 13 years since 1942. The storm also brought the first sub-freezing temperatures of the season when the temperature dipped to a low of 25 degrees.

In 1956…southwest winds gusted to 53 mph and produced some blowing dust at Stapleton Airport.

In 1967…a northwest wind gust to 51 mph was recorded at Stapleton International Airport. In downtown Boulder… Winds were sustained at 20 mph with gusts in excess of 40 mph.

In 1981…strong winds occurred in the foothills. Wind gusts to 70 mph were reported at Wondervu.

23-24

In 1887…the first measurable snowfall of the season totaled 3.1 inches. North winds to 20 mph were recorded on the 23rd. This was the only measurable snow of the month.

In 1932…post-frontal snowfall from the late evening of the 23rd continued through the late afternoon of the 24th and totaled 6.2 inches. Southeast winds were sustained to 25 mph with gusts to 26 mph on the 23rd. Temperatures cooled from a high of 68 degrees on the 23rd to a low of 25 degrees on the 24th…the coldest reading of the month that year. Many trees that had not shed their leaves became heavily laden by the wet snow. Many branches were broken… And a few trees toppled under the weight of the snow. The landscape became one of rare beauty.

23-25

In 2021…after several weeks of warm…windy and dry weather that fueled the two largest wildfires in the state`s history; a powerful storm system brought welcome relief as it produced heavy snow and frigid temperatures Denver and the Front Range. In the Front Range mountains and foothills… storm totals ranged from 10 to 20 inches. Along the urban corridor…storm totals from 4 to 12 inches were observed… with the heaviest amounts along and generally west of I-25 and over Weld County…where localized bands of heavy snow Some storm totals included 14.3 inches near Allenspark; and 12.9 inches in southeast Boulder and Nederland…with 12.8 inches near Loveland. At Denver International Airport…4.0 inches of snowfall was observed.

24

In 1956…southwest winds gusted to 56 mph and produced some blowing dust at Stapleton Airport. A cold front produced a thunderstorm with 1/8 inch hail. Rain later changed to snow. Precipitation totaled only 0.11 inch and snowfall only 0.3 inch.

In 1973…strong winds raked the eastern foothills…causing damage in Boulder and Jefferson counties. The heaviest damage occurred in the Boulder area where 20 to 25 mobile homes were hit…some power and telephone lines were blown down…and a store was damaged. A wind gust to 76 mph was recorded in Boulder at the National Bureau of Standards. Northwest winds gusted to 46 mph at Stapleton International Airport.

24-25

In 1921…rainfall totaled 0.35 inch overnight behind an apparent cold front. North winds were sustained to 40 mph with gusts to 46 mph on the 25th. Temperatures plunged from a high of 73 degrees on the 24th to a low of 39 degrees on the 25th.

In 1923…rain overnight changed to snow during the morning. The heavy snowfall accumulated to 12.0 inches before ending on the morning of the 25th. Post-frontal north winds were sustained to 22 mph with gusts to 23 mph on the 24th.

In 1997…one of the worst and deadliest blizzards of the decade developed over eastern Colorado as deep east to northeast flow associated with a vigorous upper level low pressure system over the Four Corners…combined with a strong arctic air mass over the central great plains. Snowfall totals across metro Denver ranged from 14 to 31 inches. The heaviest snowfall occurred in the foothills west and southwest of Denver where 2 to 4 feet of snow were measured. Sustained winds to 40 mph with gusts as high as 60 mph produced zero visibilities and extremely cold wind chill temperatures from 25 below to 40 below zero. Winds whipped the snow into drifts 4 to 10 feet deep. Several major and interstate highways were closed as travel became impossible. Red Cross shelters were set up for hundreds of travelers who became stranded when they had to abandon their vehicles. Four people died in northeastern Colorado as a result of the blizzard. None of the deaths were in metro Denver. At Denver International Airport…4 thousand travelers were stranded when the airport was forced to shut down. At least 120 cars were abandoned along Pena Blvd….the only arterial leading into and out of dia. The blizzard cost air carriers at least 20 million dollars. Thousands of cattle died in the storm over northeastern Colorado…resulting in losses totaling 1.5 million dollars. Some of the more impressive snowfall totals included: 51 inches at Coal Creek Canyon; 48 inches at Silver Spruce Ranch…near Ward; 42 inches at Intercanyon…in the foothills southwest of Denver; 37 inches at Sedalia; 35 inches at Aspen Springs and Conifer in the foothills west of Denver; 31 inches at Eldorado Springs… Southeast Aurora…and Englewood; and 30 inches on Table Mesa in Boulder. Snowfall totaled 21.9 inches at the site of the former Stapleton International Airport…setting a new 24-hour snowfall record of 19.1 inches for the month. Snowfall totaled only 14 inches at Denver International Airport where north winds gusted to 39 mph on the 24th. High temperature of only 21 degrees on the 25th equaled the record low maximum for the date first set in 1873. Low temperature of only 3 degrees on the 26th set a new record minimum for the date. » Click here to read the rest of October 23 to October 29: This Week in Denver Weather History

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Cool temperatures and dry Wednesday during the daytime then a chance for overnight showers

Wednesday, October 26th, 2022 5:07am MST

A relatively nice day ahead for Thornton, albeit with temps a bit below normal. Tonight, we stand a pretty good chance to see a little bit of precipitation (and yes, that s-word).

We start out with a good bit of cloud cover early but then coverage will gradually decrease through the morning. This afternoon should see some Colorado blue above. High temperatures will top out in the mid-50s.

Tonight, another trough will move through, mixing things up. Cloud cover and moisture will increase. This will bring a chance to see some rain showers overnight, possibly some snow in the few hours before dawn tomorrow when it is coldest. If we do see snow, it will be minimal, from a trace to an inch at most.

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Tuesday brings temps near normal, a slight chance for an overnight shower

Tuesday, October 25th, 2022 4:57am MST

Today’s weather looks much like we saw yesterday but with the mercury climbing a bit further. There will also be just a bit of a chance for a shower overnight.

Mostly sunny skies will be with us this morning then a few more clouds in the afternoon and evening. Like yesterday, winds will be a bit breezy in the afternoon. High temperatures will top out right near the average high for he date of 61 degrees.

Tonight, a cold front will be moving through and that will increase the cloud cover. We see just a slight chance for some rain showers. At this time, it doesn’t look like it will be cold enough for snow. Lows will dip to the mid-30s.

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Monday in Thornton to offer cool temperatures, a good bit of sun

Monday, October 24th, 2022 5:00am MST

Yesterday’s system didn’t really offer much in the way of weather excitement beyond some light showers. Today, the system is moving out and in its wake we will be left a bit cool  but dry.

Mostly sunny skies start us off and will continue throughout the day. Conditions will be calm and dry although the afternoon may see some slightly breezy winds. Early this morning is seeing temps a bit below freezing, our coldest readings of the season so far. We will warm up to a high in the low 50s, about 10 degrees below average for the date.

Tonight, skies remain mostly clear with overnight lows dipping to close to freezing.

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Winter Weather Preparedness Week recap

Saturday, October 22nd, 2022 4:30am MST
Winter Weather Preparedness Week concludes. Are you ready for winter?

Winter Weather Preparedness Week concludes. Are you ready for winter?

As we have talked about this week, winter weather can be dangerous and downright deadly.  However, being prepared helps to ensure that you and your family remain safe when the snow starts to fly or other winter weather conditions occur.

It is very easy to ignore the dangers of weather – no matter the season – and find yourself saying, “I wish I would have….” Now is the time to think about how you can prepare for these conditions, before it is too late and you find yourself wishing you had.

In this sixth and final message in a series on Winter Weather Preparedness from the National Weather Service, ThorntonWeather.com reviews the topics we covered this week and directs you to the previous articles and other resources to help you get ready.

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE BOULDER CO
600 AM MDT SAT OCT 22 2022

Enjoy the great outdoors in Colorado this winter season, but watch the weather.

The National Weather Service issues a variety of winter weather, outlooks, watches, warnings, and advisories, covered earlier during this Winter Weather Preparedness Week.  Safety tips were also passed along.

» Click here to read the rest of Winter Weather Preparedness Week recap

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Thornton’s to see a mild weekend, some chances for precipitation toward the end

Friday, October 21st, 2022 5:10am MST

Overall, a pretty good looking three day period for us. We will enjoy two mild, dry days then we do see things change on Sunday with some rain and yes, possibly some snow.

For today, sunny to mostly sunny skies will be above. There is a wave cloud setting up and that could impact things a bit. Highs will top out in the upper 70s. Winds will be somewhat breezy this afternoon. Tonight, temps dip to the low to mid-40s under mostly clear skies.

Saturday will see a bit more cloud cover but remain quite mild. Highs will be in the mid-70s under mostly sunny skies. Saturday night, cloud cover will increase as a trough approaches. Lows will be in the mid-40s.

On Sunday, clouds and winds will be increasing. Look for partly clear skies with breezy conditions for much of the day. Highs will top out in the upper 60s. We may see a sprinkle of rain Sunday AM with better chances coming in the afternoon.

Late Sunday, a cold front will push through. This will lead to temps near freezing Sunday night and offer a bit of a chance for our first snow of the season overnight into Monday morning. At this time, it doesn’t look like it will be very impressive so we aren’t expecting much of the white stuff at all.

Have a great weekend!

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Avalanche safety – Be prepared or die

Friday, October 21st, 2022 3:40am MST
Avalanches claim lives every year in Colorado. Before you head to the mountains, be sure you are prepared! (Wikimedia Commons)

Avalanches claim lives every year in Colorado. Before you head to the mountains, be sure you are prepared! (Wikimedia Commons)

As snow starts to fall, many Coloradoans and out of state visitors will take advantage of it and head to the mountains for a variety of outdoor activities.  Whether skiing, snowshoeing, or hiking, anyone who spends time outdoors in the high country needs to be aware of the danger avalanches present.  On average six people die in Colorado every year from avalanches and being prepared is an essential survival skill.

In this fifth in a series on Winter Weather Preparedness from the National Weather Service, ThorntonWeather.com helps you understand avalanches, where they occur, how to protect yourself and where to go for more information.  If you are headed to the high country, be sure to check out our Avalanche Information & Forecast page.

PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE DENVER CO
600 AM MDT FRI OCT 21 2022

Avalanches – Are you prepared?

Thousands of avalanches occur each winter in the mountains of Colorado. With the enormous popularity of winter sports in Colorado, this poses a risk to skiers, snowboarders, snowmobilers, and people traveling in the backcountry. On average 6 people die in Avalanches in the state of Colorado every year. Anyone who travels into the high country in the winter should be prepared for avalanches And know how to avoid them.

The most important thing to know is how to get information on current avalanche conditions. Check the Colorado Avalanche Information Center website at http://avalanche.state.co.us/ for the current avalanche forecast and the National Weather Service website http://www.weather.gov for the current weather forecast in your area. Knowing the current and future conditions will help you make good decisions in the backcountry.

A little information about avalanche safety can go a long way. Most avalanches occur during or just after snowstorms on a slopes between 30 to 45 degrees. A significant snowfall may result in an unstable snowpack. By waiting at least 36 hours after a big snow or wind storm before you go into the mountains the Snow may become more stable and less likely to avalanche. If you stay in valleys away from avalanche chutes, in stands of dense trees, or on gentle slopes you can decrease the risk of being caught in an avalanche.

If you are a skier or snowboarder at a commercial ski area the risk from avalanches is lower than in the backcountry. Ski patrols work to reduce the chance of an avalanche on open slopes. Respect the rules of the ski area, stay on open slopes, and do not stray out of bounds or into closed areas. The avalanche risk is higher outside of the ski area boundaries.

If you want to enjoy the great outdoors in areas prone to avalanches…You can reduce the danger by following a few simple rules:

  • Check the current avalanche forecast to get information on current and forecast avalanche conditions. Also check the latest weather forecast to see if conditions are likely to change while you are in the backcountry.
  • Never travel alone. Always have one or more companions. Even small avalanches can be fatal. If you are alone and get trapped, you may not be found until spring.
  • If crossing a slope that may be prone to avalanches, do it one person at a time. You want to minimize the impact on your party if an avalanche is accidentally released.
  • In avalanche country, all members of your party should carry avalanche rescue equipment including an avalanche beacon, shovel and probe pole. This increases your chances of a successful rescue and finding your friends alive.

Avalanche conditions in Colorado are monitored and forecasted by the Colorado Avalanche Information Center, CAIC. You can get more information on avalanches, avalanche forecasts, avalanchesafety and request a safety class from CAIC. Go to their website…Http://www.colorado.gov/avalanche or call the center at 303-499-9650.

Winter Weather Preparedness Week continues through Saturday. Now is the time to get prepared for winter so you can safely enjoy the outdoors and travel safely when the snow flies.

Avalanche Safety Tips

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