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

Area King Soopers Offers Discounted Weather Radio

All Hazards NOAA Weather RadioWe recently wrote about systems which provide severe weather alerts to the general public.  In writing that, we extolled the virtues of having a “weather radio” – a specialty radio that allows you to listen to and monitor the NOAA Weather Radio All Hazards (NWR) system.

Midland WR-100 Weather RadioWe just read on KMGH channel 7’s website that all Front Range area King Soopers are offering a very good deal on a Midland WR-100 radio.  These are similar to the WR-300 model we discussed previously – just with fewer bells and whistles.  The WR-100 retails for $49.99 but through September at area King Soopers stores you can buy one for $29.99. 

You can find more information on channel 7’s website including a list of area King Soopers stores and even a video that walks you through how to set the radio up.  This is a great deal and we would encourage everyone to take advantage of it. 

Beautiful Weekend Ahead

Beautiful weekend ahead.Now this is just about perfect!  The forecast shows just about ideal weather if maybe a touch warm.  Friday we will have a high temperature of 82 under clear skies.  Saturday will be the warmest day of the weekend hitting near 90, again under clear skies.  Sunday follows up with a high of 85 with a few clouds around. 

The first part to the middle of next week could see a slight change as a series of cold fronts moves across eastern Colorado.  Afternoon and evening thunderstorms could be a possibility. 

Get outside and enjoy this weather! 

Windsor Tornado Officially Rated as EF3

The National Weather Service has completed their tornado assessment of the Windsor tornado and determined the twister was rated an EF3 on the Enhanced Fujita scale.  See below for details and here for a map of the path the twister took

PUBLIC INFORMATION STATEMENT…UPDATED…
NATIONAL WEATHER SERVICE DENVER CO
430 PM MDT FRI JUN 6 2008

..WELD COUNTY TORNADO OF MAY 22 2008 RATED AN EF3 TORNADO…

On Thursday May 22 2008 a wide and powerful tornado swept north northwestward for 34 miles from northeast of platteville in Weld County at 1126 AM MDT to 7 miles east northeast of Fort Collins in Larimer County at 1216pm MDT.   The National Weather Service tornado damage assessments conducted on Friday May 23rd and Saturday May 24th documented large areas of damage.  On the enhanced Fujita scale there were pockets of EF3 damage especially near the Missile Silo Park Campground west of Greeley and to homes and businesses in eastern Windsor.  Wind estimates in the heavily damaged areas were as high as 130 to 150 mph. 

The tornado was as wide as one mile at times along its path.  There was one fatality and 15 to 20 injuries.   Damage estimates are not finalized, but preliminary numbers from FEMA are 850 homes damage, with nearly 300 homes signficantly damged or destroyed.  Privately insured damages total 174 million dollars…and the Poudre Valley Rural Electric Association reported one million dollars of damage to electric transmission facilities.  

One question frequently asked is how unusual was this event.  Certainly it was not unusual in time of year (May and June are the peak tornado months in Colorado).  It was not unusual in location (more tornadoes are reported in Weld County than any other county).  It was slightly earlier in the day than normal, as we usually see tornadoes in the mid afternoon to early evening.  The track was longer than most, the tornado was moving fastern than most,  and a track moving north northwest is very unsusual.  Since 1950 there have been a total of 20 tornadoes of f3 and higher within Colorado.  This was the second f3 tornado reported in weld county since 1950.   On May 15, 1952 an F3 tornado injured 5 people within the county. 

For reference…the Enhanced Fujita Scale classifies tornadoes into the following categories:

EF0…wind speeds 65 to 85 MPH.

EF1…wind speeds 86 to 110 mph.  

EF2…wind speeds 111 to 135 mph.

EF3…wind speeds 136 to 165 mph. 

EF4…wind speeds 166 to 200 mph. 

EF5…wind speeds greater than 200 mph.

Colorado Weather – Rain, Thunderstorms and Snow – All Today!

One thing that is consistent about Colorado weather is how inconsistent it can be!  Yesterday evening we saw some metro area thunderstorms with some rain and a pretty good lightning show.  Further east on the plains, four tornadoes were reported but all were in open areas.  Today the state will see it all. 

 

Current Advisories / WarningsFlood watches / warnings are in effect for a good part of the western slope.  Also out west there are actually snow advisories issued for the Gore and Elk Mountain Ranges and a few other spots as the snow level will drop to around 9,000 feet.  Much of the eastern third of the state is under thunderstorm watches until around noon and those could very well be extended.  Severe storms out there are a real possibility. 

Click here to see what advisories / warnings are currently issued for the state

This morning in the metro area we woke up to overcast skies and light rain in many areas.  Showers will continue on and off throughout the day and a thunderstorm or two are a possibility.  Temperature wise we will be about 20 degrees below the normal of 79 and that is a pretty dramatic difference from recent days.  Expect temps around the metro area to reach around 60 today. 

There is good news though.  The rain and cool weather will move out of the Front Range after midnight tonight and we will see a quick warm up and a beautiful weekend.  Look for 77 degrees on Friday and 85 degrees on Saturday and Sunday. 

If you didn’t read our June weather preview, you may find it interesting to know that snow has actually been recorded in Denver as late as June 11th (1947).  It is pretty unlikely anything like that will happen this year but if you don’t like the rain, just remember that it could be snow! 

Tornado Watch Issued for Metro Area – Northeast Colorado

Tornado Watch issued for Denver.The National Weather Service has issued a Tornado Watch for much of northeastern Colorado including the Denver Metro area.  Counties under the watch include Adams, Arapahoe, Denver, Douglas, Elbert, Kit Carson, Lincoln Logan, Morgan, Phillips, Sedgwick, Washington, Weld and Yuma.  This watch is in effect until 8:00pm tonight. 

Tornado Watches are issued when weather conditions are favorable for the development of severe thunderstorms that are capable of producing tornadoes. A tornado watch therefore implies that it is also a severe thunderstorm watch.

As we all saw two weeks ago in Weld County, conditions can quickly deteriorate and the weather can present a very real danger to life and property.  Now would be a good time to run through tornado emergency procedures in your mind. 

Please remember, should the tornado threat increase:  Get in, get down and cover up!  A well built structure with a basement is ideal shelter but if that is not available, an interior bathroom or closet is next best.  Modular and mobile homes are NEVER a good option nor are vehicles.  If you are in a vehicle and a tornado is near, abandon it immediately and seek shelter in a low lying area such as a ditch. 

For these and other tornado safety tips, please see our Severe Weather 101 – Tornadoes

Thunderstorms Dump Hail on Thornton – More to Come?

Thornton Radar - 06-02-08Monday evening was a bit interesting around Thornton as hail was reported across much of the city.  Toward the northeast corner, hailstones up to 1″ in diameter were reported, including at the home of ThorntonWeather.com.  Thankfully it was shortlived and the size of the hail while notable, wasn’t big enough and didn’t last long enough to do any real damage.  The image at the right is the radar image of the storm as it passed over – click on it to view the full image.  That particular cell broke its upper cap of 26,000 feet and grew to 32,000 feet in a span of 15 minutes! 

Tuesday could bring severe storms again thanks to an abudnance of lower level moisture.  However, cooler temperatures should help to keep these from becoming quite as severe but hail and wind are a possibility.  As is typical this time of year, east of the urban corridor has the best chance to see some excitement. 

Wednesday afternoon and evening the chance for storms increases as a cold front moves through but again, the cooler temps should help to keep things a bit under control.  Locally heavy rain is possible, particularly the farther east you go.  In the mountains, there may even be some of the white stuff above 9,500 feet!

June 2008 Weather Preview – Severe Weather Month is Here

June 2008 Weather PreviewNotwithstanding last month’s tornadoes in Windsor and the northern Front Range, June is historically Denver’s real severe weather month.  Severe thunderstorms, tornadoes and hail are notorious visitors to Denver and across eastern Colorado during the month.  In fact, over 40 percent of the tornadoes that occur in Colorado are observed in June and these are typically the most destructive of the year.  Severe thunderstorms have also caused major property damage across the Front Range during the month.  Click here to read our complete June 2008 Weather Preview

How do you know when something bad is coming?

Emergency Alert Sirens - Not in Thornton!I was recently asked how prevelant tornado sirens are in the metro area and thought that would be a good discussion to have.  Tornado and alert sirens do exist in some municipalities in the Denver metro area but not all. Boulder has a system (primarily due to flood dangers) as does the city of Denver itself. Many of the other suburbs however do not.  Unfortunately, Thornton does not which to me is somewhat odd as in 1981 Thornton was struck by one of the few tornadoes to have hit the metro area so you would think that would have caused them to consider building a system back then.  If you are reading this and live in another municipality, give them a call to find out if one is available in your area.

The sirens definitely do provide a service to the community.  However, USA Today just had an article discussing these types of systems and pointing out that they were expensive to maintain and of limited effectiveness.  Some municipalities have depended on reverse 911 systems to alert residents but it is my opinion that these to are limited because they rely on someone being home to answer the phone.  What if you are in an area park and a tornado is coming? People today are very mobile and a solution that takes that into account and can warn people wherever they are would be ideal.

The city of Dacono recently deployed a system that I think Thornton should give some thought to.  You can read more about it here but in essence residents can sign up to receive alerts on their home phone, cellular phone and email.  Within a matter of seconds, thousands of subscribers can be notified of everything from weather events to disaster updates to AMBER alerts for much less than the cost of a siren system.  ThorntonWeather.com is going to be discussing the idea of this type of system with Thornton City Council members in coming weeks so be sure to check back to see what we learn.

NOAA All Hazards Weathe RadioIn the meantime, probably the best way to ensure you are warned about approaching dangers is to purchase what is commonly known as a “weather radio.” These radios are relatively inexpensive (around $40.00) and allow you to listen to and monitor the NOAA Weather Radio All Hazards (NWR) system. NWR broadcasts official Weather Service warnings, watches, and forecasts as well as other hazard information like earthquakes, avalanches, chemical spills, and even AMBER alerts. These broadcasts continually run 24 hours a day, 7 days a week and provide a great way to stay up to date with developing weather conditions.  One of these radios is actually what broadcasts our weather radio system here on ThorntonWeather.com.

Some of the nicer units even use what is called SAME – Specific Alert Message Encoding – which I would highly recommend. In essence you program in a code for the area in which you live and the radio will automatically turn on and sound an alert when something of note is in your area. These weather radios are very popular in rural areas in Tornado Alley but as we saw last week in Windsor, they definitely can be useful here along the Front Range as well. More information about the system can be found on the National Weather Service’s website and you can find these at many electronics retailers, particularly those on the Internet like Amazon or NewEgg.

Midland WR-300 Weather RadioWhich weather radio do we use?  We are hesitant to recommend specific products but our radio of choice at the current time is the Midland WR-300.  This radio has the important SAME coding feature, a text display to show you what sort of alert is occurring, battery backup and more.  We have been pleased with the two we have.  NewEgg carries this model for $47.99.

Regional Weather Now at Rocky Mountain Weather Network

We are excited to announce a new regional weather website – the Rocky Mountain Weather Network (RMWN) – that you will find at www.rockymountainweather.net.

One of the prominent members of the personal weather station (PWS) community, Ken True of SaratogaWX, recently hatched the idea of a series of regional weather networks, all being fed data from weather stations in the areas they serve. Tony of ThorntonWeather.com has agreed to manage the regional network for the Rocky Mountain area encompassing Colorado, New Mexico and Wyoming.

These networks are to provide an overview of weather conditions across the region and will provide links to the stations within. The main page of the site displays a “mesomap” with a rotating display of current weather conditions across the three states. At the current time, 18 stations are online with RMWN and more are joining daily.

The Rocky Mountain Weather Network will not only serve as an online repository for current weather conditions in the area, but we are also hoping to see it grow into an online community . To this end, online discussion forums have been created on the RMWN website that anyone can participate in. These will be frequented not only by weather station owners / operators but also by the public and anyone just generally interested in the weather. The community will be a great way for anyone interested in the weather to congregate online and discuss their common interests.

So please check out the Rocky Mountain Weather Network at www.rockymountainweather.net and be sure to stop by the discussion forums for some weather talk!

Rocky Mountain Weather Network

Windsor Tornado – Amazing Photo and Video

Some pretty amazing video and photos of the Windsor tornado came to my attention.

First up are two photos captured by a fellow weather enthusiast’s webcam.  Ryan of MyWindsorWeather.com captured the tornado as it passed about 2 miles to the east of his home.  Absolutely amazing.

MyWindsorWeather.com Webcam Capture #1 MyWindsorWeather.com Webcam Capture #2

Second, raw video from the 9News camera crew that captured the tornado.  Again, absolutely amazing.