All posts by Thornton Weather

ThorntonWeather.com is your local source for live Thornton, Colorado weather conditions and news!

One Year Anniversary of Holly Tornado Marked Friday

On year anniversary of the Holly tornado.Friday marked the one year anniversary of the tornado that struck Holly, Colorado in Prowers County.  At 8:11pm on March 28, 2007, with no real warning, an EF-3 tornado with winds of 165mph touched down and quickly tore a path more than two miles long and four blocks wide.  162 of the 369 homes in Holly were either damaged or destroyed but most notably, Rosemary Puga died during the storm and Delores Burns died a month later due to the injuries she suffered.

Today Holly is rebuilding and showing the American spirit of survival that has been demonstrated so many times in our country’s history.  From the ashes of pain, suffering and destruction a new Holly is rising today but it serves as a reminder of the destructive power of Mother Nature.  Here in Colorado we can see the entire gamut of severe weather and while we talk about the weather every day, we should always remember that it is not us who is in control and lives can be lost. 

Please take a moment to say a prayer for Rosemary, Delores and all of the residents of Holly. 

Space Station to be Visible in Denver

Space station to be visible in DenverFor the next few days residents of the Denver area will be able to get a glimpse of the space station over the southern skies.  Tonight it will be visible starting at 7:56pm in the south-southwest sky, about 10 degrees above the horizon.  That is pretty low but come Friday and Sunday the angles are a bit higher.  Be sure to check it out!

Station viewing opporunities from Denver.

Station viewing opportunities from other places in Colorado.

Surprise Snow on Easter Eve

Easter snowLast night / this morning  we had a bit of a surprise as the forecasted snow that was only supposed to amount to 1/2 inch quickly turned into 3.7 inches on the ground early this morning.  Yesterday afternoon and early evening we started observing some upslope conditions with strong winds from the northeast and begain wondering if the passing front could bring more than forecast.  The snow started falling in earnest around 8:00pm, tapered off around 9:30 then at 12:30 this morning more started falling.  All in all a pleasant surprise. 

For Easter morning things will be a bit chilly, particularly for those heading to sunrise services.  Sunrise is at 6:57am and in Thornton at that time the mercury will be a mere 23 degrees.  We’ll have clear skies today though and warm up pretty quickly to 43 by noon as we head for a high of 51.  For the first part of the week we will see above normal temperatures in the upper 60’s Monday through Wednesday which is great for those on Spring Break this week. 

We here at ThorntonWeather.com wish you and yours a happy and blessed Easter!

NOAA: Increased Flood Risk, Minimal Drought

Yesterday NOAA released its spring drought and flood risk predictions and in it are some good and bad news for Colorado. 

Beware of the dangers of flooding!First, the good news.  With the extraordinary amount of snow the mountains have experienced this winter, the chances of drought are negligible for most of the state.  The southeastern corner of Colorado however could see some risk.

Second, the bad news.  With all that snow comes a risk of flooding.  The danger could be especially great if we experience a warmer than normal spring and the mountain runoff occurs too quickly.  Most of the state, with the exception of the northeast corner, runs above normal risks of flooding this spring.  Locations in the mountains of Colorado have 150 to 200 percent of average water contained in snowpack leading to a higher than normal flood potential.  Flooding is the number one weather killer in the country so everyone needs to be aware of the dangers this presents! 

For more information, please see NOAA’s report here.

2008 Spring Drought Outlook     2008 Spring Flood Danger Outlook

NWS Storm Spotter Training in March & April

Storm Spotter Training This WeekUpdated 3/21 @ 9:30am – ThorntonWeather.com attended the recent training in Westminster and found it to be very worthwhile.  Most of the topics covered related to severe thunderstorms, how to recognize the various types, the potential for tornadoes, and more.  If you are interested in attending one of these sessions, please follow the link below.  There are more sessions in the coming weeks in the north metro area.

3/17/08 @ 12:56pm – The National Weather Service will be conducting storm spotter training this Wednesday and Thursday at Front Range Community College.  The Colorado All-Season Spotter Team (CAST) is a volunteer spotter network which provides real-time weather information year round to forecasters at the National Weather Service in Boulder, Colorado.

These are great sessions for anyone wanting to learn more about the severe weather we experience in Colorado.  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

    To view more information on this week’s training as well as future dates, see here:  http://www.crh.noaa.gov/bou/?n=spot_training

    Heavy Snow Warning Cancelled – Storm Recap

    Snow on the wayUpdated Monday, 3/17, 9:50am – The National Weather Service has cancelled the Heavy Snow Warning for the Denver metro area.  Light snow early this morning should come to an end in most areas by late this morning and little additional snow accumulation is anticipated.  We should see gradual warming with dry and seasonal temperatures at least until Friday. 

    Updated Monday, 3/17, 6:00am, Heavy Snow Warning Remains in Effect – Well, thus far the storm hasn’t quite shaped up as it was expected to, at least in the Denver metro area.  The one component that is really missing for heavy snowfall is a good, strong upslope wind.  Upslope winds have a northeasterly / easterly component and are what typically is required for us to see big snows and that just hasn’t happened – at least not enough of one.  Things started out strong yesterday evening with some good snow falling around 8:00pm but it didn’t last long.

    Western Kansas on the other hand appears to be bearing the brunt of the storm with a mix of blowing snow and thunderstorms.  Indeed, our lightning detector was picking up a number of strikes out there during the 5:00am hour although that has since dissipated.

    Looking at the rest of today, we do still remain under a Heavy Snow Warning until 3:00pm although if things don’t change, that could be lifted sooner.  Radar does show moisture coming up from the south of the metro area and forecasts still call for an additional 3 to 5 inches possible this morning.  However, with the temperatures staying near freezing, much of that will melt rather than accumulate. 

    Updated 3/16, 5:15pm – It is looking more and more like this storm will be a reality.  The National Weather Service has upgraded the advisory to a Heavy Snow Warning that goes into effect at midnight tonight and runs through 3:00pm tomorrow.  Current projections are still a bit flakey and show that we will receive anywhere from 4 to 12 inches of snow by the time the storm moves out tomorrow afternoon.  As is typical in Colorado and especially with spring storms, we could even see sunshine by the end of the day tomorrow.

    A heavy snow warning means severe winter weather conditions are expected or occurring. Significant amounts of snow are forecast that will make travel dangerous if not impossible. Only travel in an emergency. If you must…keep an extra flashlight…food…and water in your vehicle in case of an emergency.

    3/16/08, 4:27am, Snow Last Night, Heavy Snow Warning In Effect For Tonight – Thornton woke up to a bit of a surprise this morning with some of the white stuff on the ground – just shy of half an inch at ThorntonWeather.com.  The forecast did say there was a chance but it was pretty slim so it wasn’t really expected.  It is a typical spring snow with lots of good moisture in it so it is welcome.  We should be mostly dry for most of the daylight hours today but the structure of the system is such that some thunder could be heard today – a bit of a herald of the spring thunderstorms that will be coming soon.  Heading into late afternoon and this evening things will change. 

    The Pacific storm we have been waiting for is on its way and the National Weather Service has issued a Winter Storm Watchthat goes into effect late tonight and runs through Monday morning.  The track of this system is still a bit uncertain so the forecasts and models are hedging their bets a bit.  🙂   Current models are across the board for precipitation totals and locations so it is tough to say what we are going to end up with.  At the current time we would expect Thornton to see 3 to 7 inches of snow by the time the storm moves out tomorrow. 

    Remember that a Winter Storm Watch means there is a potential for a hazardous winter event in and close to our area.  Significant snow accumulations may occur that could impact travel.  Tomorrow morning’s commute could be a bit ugly so plan on leaving for work early. 

    NOAA: Coolest Winter Since 2001 for U.S. & Globe

    A cold winter!This week NOAA’s National Climatic Data Center announced that from December 2007 to February 2008 temperatures across the United States and the globe were their coolest since 2001.  In the contiguous United States, the average winter temperature was 33.2°F which ranks it as the 54th coolest winter since national records began in 1895.  Globally, the combined land and ocean surface temperature was the 16th warmest on record for the period.

    In terms of precipitation, as everyone here in Colorado knows, large swaths of the country experienced at or well-above normal levels of precipitation.  Indeed, some basins here in Colorado were in excess of 150% of normal.  Record February precipitation in the Northeast helped make the winter the fifth wettest on record for the region. New York had its wettest winter, while Pennsylvania, Connecticut, Vermont, and Colorado to the West, had their second wettest.

    The charts below give a good view of both temperature and precipitation for the winter.  You can also view the NCDC’s complete summary on their website here.

    Winter Temperatures     Winter Precipitation

    Flaky Weather Ahead

    A mix of rain and snow.Colorado in the spring!  Quite an array of weather across the state ahead for the coming days.  The northern and central mountains are getting pounded with snow where Winter Storm Warnings are in effect through Friday night.  One to two feet of snow is expected up there as our record snowpack continues to build.

    On the Front Range, while the statewide snowpack is still well above-average, Denver is about 5 inches behind for the seasonal winter average and about 9 inches below the monthly average.  However, we have a pretty active weather pattern expected for the next week that could eat away at that deficit.  March is usually our snowiest month so the potential is there for some good storms in the coming weeks. 

    Scattered rain and snow showers are possible throughout today and this weekend.  The big storm we were hoping to see Sunday night and into Monday looks to be pushing south into New Mexico but will cause us to be a bit unsettled through Tuesday at least.  Stay tuned to ThorntonWeather.com for the latest! 

    Beautiful Tuesday, Cooler Wednesday, Big Snow Monday?

    Variable weatherWe’re in the typical rollercoaster weather pattern that we usually see in the spring.  Tuesday was beautiful with a high of 68 degrees in Thornton.  Today will be a bit cooler as we reach 62 or so and that cooling trend should continue into the weekend.  A small disturbance could bring some minor snow accumulations to the area on Friday. 

    Looking a bit further ahead, big changes could be in store for Sunday night and into Monday.  We are currently tracking a major Pacific storm system that is working its way west and if it tracks over the state, significant snowfall could result.  This far out the models are pretty inconsistent – some show it hitting us, others show it tracking much farther south into New Mexico. 

    Weather Channel Founder – Sue Al Gore Over Global Warming Claims

    Weather Channel Founder - Sue Al GoreAt the 2008 International Conference on Climate Change on March 3 in New York, Weather Channel founder John Coleman had some interesting words about man made climate and global warming.  Among his comments he proposed suing those who sell ‘carbon credits’ in order to force an open and honest debate about climate change.

    Coleman said, “[I] have a feeling this is the opening.  If the lawyers will take the case – sue the people who sell carbon credits. That includes Al Gore. That lawsuit would get so much publicity, so much media attention. And as the experts went to the witness stand and testified, I feel like that could become the vehicle to finally put some light on the fraud of global warming.”

    He went on to talk about the Weather Channel and how he hoped they would return to their original mission of talking about the weather rather than being politically involved.  You can read more in the article here