Live updates: Thornton’s first severe weather event of the season

Springtime brings severe weather to Colorado and it is appearing very likely much of that is in store today.  While the best chances will be northeast of Thornton, the potential exists for damaging winds, large hail and possibly tornadoes.

We will be monitoring monitoring the storm very closely and posting regularly to our Facebook page and Twitter feed.  You can follow along in real time below.  We are also on Google+ here.

For complete coverage including the latest forecasts, watches, warnings and more, please monitor our Severe Weather Briefing page.


 


Drive into the mountains brings stark reminders of Colorado’s September 2013 floods

We went for a drive through Estes Park and into Rocky Mountain National Park yesterday.  Always beautiful but now, a bit more dramatic for other reasons.  

The devastation from last year’s floods are still very visible and while much has done rebuilding, much more needs to be done.  Here you can see what is left of a car after being caught in the flood on Highway 34.  In the background, the collapsed hillside is seen and two construction vehicles work to rebuild the riverbank.

Piles of debris and rubble as still visible as you climb up the canyon.  While some houses have been rebuilt, others remain in pieces.

Remnants of Colorado's September 2013 floods. (Tony's Takes Photography)
Remnants of Colorado’s September 2013 floods. (Tony’s Takes Photography)

Thornton’s May preview: From snow to severe storms

Thornton, Colorado May 2013 weather preview.
Thornton, Colorado May 2013 weather preview.

Colorado’s famously highly variable weather seems to showcase itself during the month of May when a variety of weather conditions can be seen.

Winter-like temperatures and snow are possible as are mid-summer like temperatures or the more typical spring severe weather.

As the month starts out in 2014 we are going to enjoy a mild period with unseasonably warm temperatures and dry conditions.  Long range forecasts predict a relatively ‘normal’ May.

However the month can bring extremes.  Snow is not entirely uncommon during the month, oftentimes causing damage to newly bloomed trees.  More common however is severe weather, particularly in the latter half of the month.  Thunderstorms become more frequent and their associated hazards – lightning, wind, hail and tornadoes – are usual visitors.

For a complete look at what lies ahead for the month of May, check out our full preview here.

April 2014 weather recap: Warmer and drier than normal conditions

The month of April lacked much in the way of drama for northeastern Colorado.  Overall temperatures were warmer than normal and precipitation and snow were lacking a bit.

April started out on the cool side and brought the first snow of the month on the 3rd.  By the 8th temperatures had rebounded and we enjoyed a five-day stretch of high temps in the 70s.

A storm system and cold front cooled things down on the 13th and we saw a couple of days of light snowfall.  As always the weather bounced back and Thornton recorded its first 80+ degree day of the year on the 18th.

The final four days of the month saw things turn cool again.  Some light rain was seen but the bigger story was a period of unusually windy conditions.

  • April 2014 top shots: Monthly photo slideshow
  • Denver’s average April temperature is 47.4 degrees (1981 – 2010).  For April 2014, the average temperature in Thornton was more than two degrees higher at 49.6 degrees.  Out at Denver International Airport, the average came in a bit cooler at 49.0 degrees.

    Temperatures in Thornton ranged from a high of 81.3 degrees on the 18th down to a low of 17.6 degrees on the 14th.  DIA saw its warmest reading of 80 degrees on the 22nd and its coldest of 18 degrees on the 14th.

    Low temperatures dropped below freezing on 11 days in Thornton.  No readings below zero were recorded.

    In terms of precipitation, Thornton measured 0.97 inch in the bucket.  This is a good ways below the Denver April average of 1.71 inches.  DIA saw more precipitation than us with a reading of 1.24 inches.

    Similarly, snowfall fell short of normal in Thornton and Denver.  On average the Mile High City sees 6.8 inches in April.  Thornton recorded only 5.5 inches and DIA 5.6 inches.

    Click here to view Thornton’s March 2014 climate report.

    April 2014 Temperature Summary for Thornton, Colorado. (ThorntonWeather.com)
    April 2014 Temperature Summary for Thornton, Colorado. (ThorntonWeather.com)
    April 2014 Precipitation Summary for Thornton, Colorado. (ThorntonWeather.com)
    April 2014 Precipitation Summary for Thornton, Colorado. (ThorntonWeather.com)
    CLIMATE REPORT
    NATIONAL WEATHER SERVICE BOULDER, CO
    603 AM MDT THU MAY 1 2014
    
    ................................... 
    
    ...THE DENVER CO CLIMATE SUMMARY FOR THE MONTH OF APRIL 2014... 
    
    CLIMATE NORMAL PERIOD 1981 TO 2010
    CLIMATE RECORD PERIOD 1872 TO 2014
    
    WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                     VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                              NORMAL
    ................................................................ 
    TEMPERATURE (F)
    RECORD
     HIGH              90   04/30/1992
     LOW               -2   04/02/1975
    HIGHEST            80   04/22        90     -10       80  04/29
    LOWEST             18   04/14        -2      20        6  04/10
    AVG. MAXIMUM     62.8              61.5     1.3     54.7
    AVG. MINIMUM     35.2              33.3     1.9     28.7
    MEAN             49.0              47.4     1.6     41.7
    DAYS MAX >= 90      0               0.0     0.0        0
    DAYS MAX <= 32      0               0.3    -0.3        4
    DAYS MIN <= 32     10              13.0    -3.0       17
    DAYS MIN <= 0       0               0.0     0.0        0 
    PRECIPITATION (INCHES) 
    RECORD 
     MAXIMUM         8.24   1900 
     MINIMUM         0.03   1963 
    TOTALS           1.24              1.71   -0.47     1.87 
    DAILY AVG.       0.04              0.06   -0.02     0.06 
    DAYS >= .01         6               9.1    -3.1       13
    DAYS >= .10         5               4.5     0.5        7
    DAYS >= .50         0               0.9    -0.9        0
    DAYS >= 1.00        0               0.5    -0.5        0
    GREATEST
     24 HR. TOTAL    0.48   04/02 TO 04/03              0.50
                                                    04/22 TO 04/23
    SNOWFALL (INCHES)
    TOTAL             5.6               6.8
    
    DEGREE_DAYS
    HEATING TOTAL     472               529     -57      690
     SINCE 7/1       5730              5731      -1     5802
    COOLING TOTAL       0                 1      -1        0
     SINCE 1/1          0                 1      -1        0
    
    FREEZE DATES
    RECORD
     EARLIEST     09/08/1962
     LATEST       06/08/2007
    EARLIEST                        10/07
    LATEST                          05/05
    ...................................................... 
    
    WIND (MPH)
    AVERAGE WIND SPEED              12.9
    RESULTANT WIND SPEED/DIRECTION   2/299
    HIGHEST WIND SPEED/DIRECTION    49/340    DATE  04/29
    HIGHEST GUST SPEED/DIRECTION    66/340    DATE  04/29
    
    SKY COVER
    POSSIBLE SUNSHINE (PERCENT)   MM
    AVERAGE SKY COVER           0.70
    NUMBER OF DAYS FAIR            1
    NUMBER OF DAYS PC             22
    NUMBER OF DAYS CLOUDY          7
    
    AVERAGE RH (PERCENT)     50
    
    WEATHER CONDITIONS. NUMBER OF DAYS WITH
    THUNDERSTORM              0     MIXED PRECIP               0
    HEAVY RAIN                0     RAIN                       3
    LIGHT RAIN                8     FREEZING RAIN              0
    LT FREEZING RAIN          0     HAIL                       1
    HEAVY SNOW                2     SNOW                       3
    LIGHT SNOW                6     SLEET                      0
    FOG                       8     FOG W/VIS <= 1/4 MILE      2
    HAZE                      1
    
    -  INDICATES NEGATIVE NUMBERS.
    R  INDICATES RECORD WAS SET OR TIED.
    MM INDICATES DATA IS MISSING.
    T  INDICATES TRACE AMOUNT.

    April 2014 top shots: Monthly photo slideshow

    April 2014 started with blossoming trees. Scroll down for more photos from the month.  (LW Inactivist)
    April 2014 started with blossoming trees. Scroll down for more photos from the month. (LW Inactivist)

    April marks a transition between winter and summer for most of the country but for Denver it is especially true as we can see a stunning variety of weather.

    The proverbial April showers are certainly a possibility for Denver. Snow? Tornadoes? Thunderstorms? You bet – all can happen!

    That stunning variety will undoubtedly be showcased in our monthly photo slideshow (below).

    • Slideshow updated April 26, 2014

    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 snow are vividly depicted.

    Throughout the month we will gather the images sent to us via email or shared with us via our various social media outlets and post them in the slideshow below.

    To learn more about getting your photos added to our monthly slideshow, click here. 

    Click the play button below and sit back and enjoy the images.

    Tornado outbreak hits seven states, kills at least 18 in the South

    A screen capture from video shot by a civilian drone shows the devastation caused by a tornado in Mayflower, Arkansas. (YouTube / briandjin2)
    A screen capture from video shot by a civilian drone shows the devastation caused by a tornado in Mayflower, Arkansas. (YouTube / briandjin2)

    Tornado activity in the United States had been at record low levels before this weekend. Mother Nature came roaring back to life Sunday however spawning a deadly outbreak of twisters with more expected Monday.

    The National Weather Service’s Storm Prediction Center accumulated reports of 31 tornadoes Sunday although the actual number will likely be less once analyzed. Seven states including Nebraska, Iowa, Kansas, Arkansas, Oklahoma, Louisiana, and Mississippi reported twisters.

    Hardest hit were the towns of Mayflower and Vilonia near Little Rock, Arkansas. Entire sections of the towns were reduced to their base building materials as the twisters struck late in the day Sunday.

    Read the rest of this story on Examiner.com

    Video: NASA showcases weather and climate events of 2013 as seen from space

    A scene from a new NASA video shows Colorado’s West Fork Fire in June 2013 among other area weather and climate events. (NASA / YouTube)
    A scene from a new NASA video shows Colorado’s West Fork Fire in June 2013 among other area weather and climate events. (NASA / YouTube)

    A stunning video released by NASA this week provides a bird’s eye view of some of the Earth’s most significant weather and climate events of last year.

    Using images and movies from satellites and the International Space Station, scenes from across the globe are shown in the video titled “Earth from Orbit 2013.”

    Colorado and surrounding states however will draw the most attention from many locally.

    From their perch high above, imagery of Colorado’s West Fork Fire in June 2013 is seen as well as the effects of the September floods.

    To our south, the drought in New Mexico is seen having taken its toll on Elephant Butte Reservoir in New Mexico.  The veritable explosion of storm cells that lea to devastation in Oklahoma during a May tornado outbreak are also shown.

    Below the video you will find a description of each scene and links to more imagery.

    From NASA – Published on Apr 21, 2014:

    A fleet of orbiting satellites monitors Earth constantly. The satellites from NASA and other space agencies give us a fresh, wide perspective on things that we can see from the ground — and things that we can’t.

    A look back at Earth in 2013 from the viewpoint of orbit reveals the kind of data gathering and technical achievement that are the reason NASA puts Earth-observing satellites in space. A visualization of satellite and computer model data shows how a cloud of dust from the Chelyabinsk meteor moved around the world. NASA satellites measured the intensity of wildfires, the salinity of the oceans and rainfall around the globe — whether it was too little or too much.
    To learn more about NASA’s Earth science in 2014, please visit: www.nasa.gov/earthrightnow

    Imagery used in this video, in order:
    Views of a Distant Earth
    http://earthobservatory.nasa.gov/IOTD…

    Earth and Moon
    http://svs.gsfc.nasa.gov/vis/a000000/…

    Current Earth Observing Fleet
    http://svs.gsfc.nasa.gov/vis/a030000/…

    Term3_ISS From Night to Day to Night Again
    http://eol.jsc.nasa.gov/Videos/CrewEa…

    Astronaut View of Fires in Colorado
    http://earthobservatory.nasa.gov/Natu…

    Extensive Ice Fractures in the Beaufort Sea
    http://earthobservatory.nasa.gov/IOTD…

    Dune Movement Around Aorounga
    http://earthobservatory.nasa.gov/IOTD…

    San Francisco Region at Night
    http://earthobservatory.nasa.gov/IOTD…

    Whiting Event, Lake Ontario
    http://earth.jsc.nasa.gov/debrief/ISS…

    Dust Plumes over the Mediterranean
    http://earthobservatory.nasa.gov/Natu…

    Mt. St. Helens
    http://earthobservatory.nasa.gov/IOTD…

    El Paso
    http://earthobservatory.nasa.gov/IOTD…

    Close-Up of Flooding in Mozambique
    http://earthobservatory.nasa.gov/IOTD…

    Drought Dries Elephant Butte Reservoir
    http://earthobservatory.nasa.gov/IOTD…

    Oklahoma Tornadoes
    http://earthobservatory.nasa.gov/Natu…

    Floods in Colorado
    http://earthobservatory.nasa.gov/Natu…

    Pavlof Volcano
    http://earthobservatory.nasa.gov/Natu…

    Swirling Sediment Reveals Erosive Power of New England Storm
    http://earthobservatory.nasa.gov/IOTD…

    Never at Rest: The Air over Los Angeles
    http://svs.gsfc.nasa.gov/vis/a000000/…

    Measuring Soil Moisture from Space
    http://svs.gsfc.nasa.gov/vis/a030000/…

    Antarctic Bedrock
    http://svs.gsfc.nasa.gov/vis/a000000/…

    Seeing Photosynthesis from Space
    http://svs.gsfc.nasa.gov/vis/a010000/…

    Greenland’s Mega Canyon
    http://svs.gsfc.nasa.gov/vis/a000000/…

    Chelyabinsk Bolide Plume as seen by NPP and NASA Models
    http://svs.gsfc.nasa.gov/vis/a000000/…

    Narrated Distributed Water Balance of the Nile Basin
    http://svs.gsfc.nasa.gov/vis/a010000/…

    NEO Observations (various)
    http://svs.gsfc.nasa.gov/cgi-bin/advs…

    Total lunar eclipse to bring ‘blood moon’ on Tax Day

    Diagram of the April 14 / 15, 2014 total lunar eclipse. Click for a larger view. ( Fred Espenak, http://www.MrEclipse.com)
    Diagram of the April 14 / 15, 2014 total lunar eclipse. Click for a larger view. ( Fred Espenak, http://www.MrEclipse.com)

    For those willing to forgo a bit of sleep tonight, a gaze skyward will provide a look at the first lunar eclipse of 2014.

    The entire celestial event will be visible from Colorado beginning at 11:58 pm tonight as the partial eclipse begins.  Totality occurs at 1:07 am MDT on the morning of April 15 and lasting until 2:25 am.  The event will be over at 3:33 am.

    Current weather forecasts for Thornton and the Denver metro area show that we should have mostly clear skies tonight allowing prime viewing of the event.  It will however be quite cold with temperatures in the mid to upper 20s.  Check our 48 hour point forecast for what to expect.

    During totality, the moon will be rendered orange / red as the Earth’s shadow envelops the moon.  Many are calling this a ‘blood moon’ but the meaning behind that term isn’t exactly clear.

    As written on EarthSky.org, some attribute it to the lunar tetrad – four successive full lunar eclipses without any partial eclipses.  Tonight’s eclipse begins the lunar tetrad with each full lunar eclipse coming six months apart.

    The blood moon as it pertains to these eclipses should not be confused with the October full moon which is also referred to as a blood moon in folklore.

    Also note that Mars is at its closest point to Earth in 6 years.  The red planet will be visible at about the 2:00 position in relation to the fully eclipsed moon.

    For more information:

    National Weather Service announces storm spotter training dates for 2014

    On June 3, 1981 a tornado struck Thornton in what is the worst twister to have struck the Denver metro area. Are you ready should disaster strike again? Image courtesy the City of Thornton archives.

    Severe weather is a fact of life in Colorado – from blizzards to tornadoes we can and do see it all.  Each year the weather is responsible for claiming lives in our state and across the nation and the threat is very real.  Storm spotter training allows you to learn how to protect yourself and your family while providing a public service.

    Education is key to knowing how to protect you and your family.  Whether you want to be an official storm spotter or maybe just want to learn more about severe weather, storm spotter training can provide you an incredible opportunity to learn.

    The National Weather Service Denver / Boulder office has announced a series of Skywarn storm spotter training dates for Colorado for the 2013 season.

    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.

    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

    Below are the dates, times and locations announced thus far with the first occurring on Sunday, February 16.  We will try to keep this updated but you can click here for any new dates on the National Weather Service website.

    Schedule updated 4/6/14:

    April, 2014 – Upcoming
    Day City, State Time Location
    07 Loveland, CO
    (Larimer County)
    9:00am MDT The Rialto Theater 228 E. Fourth Street Loveland, Colorado 80537
    Contact Information: mialyp@ci.loveland.co.us
    07 Fort Collins, CO
    (Larimer County)
    6:30pm MDT Fort Collins Police Services Building, Community Service Room 2221 S. Timberline Drive Fort Collins Colorado
    Contact Information: migavin@poudre-fire.org
    10 New Raymer , CO
    (Weld County)
    6:30pm MDT New Raymer Community Building 25 Shirley Ave. New Raymer, CO
    Contact Information: dustin@dustinpricephotography.com
    12 Kiowa, CO
    (Elbert County)
    9:00am MDT Old County Courthouse Second floor, 215 Comanche Street, Kiowa, CO 80117
    Contact Information: brandon.lenderink@elbertcounty-co.gov
    14 Akron, CO
    (Washington County)
    6:30pm MDT Washington County Fairgrounds Event Center 551 E. Second Street, Akron, CO
    Contact Information: mmccaleb@co.washington.co.us
    15 Greeley, CO
    (Weld County)
    6:30pm MDT Weld County Administration Building, 1150 O Street, Greeley, CO
    Contact Information: gmarquez@co.weld.co.us
    19 Commerce City, CO
    (Adams County)
    10:00am MDT Sheriff’s Substation Conference Room, 4201 E. 72nd Ave., Commerce City, CO 80022
    Contact Information: r1@rampartsar.com
    21 Centennial, CO
    (Arapahoe County)
    6:30pm MDT Arapahoe County Sheriff, 13101 East Broncoes Parkway, Centennial, CO
    Contact Information: awallin@arapahoegov.com
    24 Aurora, CO
    (Arapahoe County)
    6:00pm MDT Aurora Central Library 14949 E Alameda Pkwy, Aurora, CO 80012.
    Contact Information: acox@auroragov.org
    26 Strasburg, CO
    (Adams County)
    10:00am MDT Strasburg Fire Department Conference Room, 56281 E. Colfax Ave., Strasburg, CO 80136
    Contact Information: tmccall@svfd8.org
    28 Parker, CO
    (Douglas County)
    6:30pm MDT Parker Police 18600 Lincoln Meadows Pkwy Parker, CO 80134
    Contact Information: khenry@parkeronline.org
    29 Littleton, CO
    (Jefferson County)
    10:00am MDT Foothills Park and Recreation District 6612 S. Ward Street, Littleton, CO 80127.
    Contact Information: lisan@fhprd.org
    29 Denver, CO
    (Denver County)
    7:00pm MDT Red Cross facility 444 Sherman St., Denver Co
    Contact Information: kc0mht@msn.com
    May, 2014 – Upcoming
    Day City, State Time Location
    01 Hugo, CO
    (Lincoln County)
    2:00pm MDT Lincoln County Courthouse 103 3rd Street, Hugo, CO 80821
    Contact Information: lclanduse@lincolncountyco.us
    01 Hugo, CO
    (Lincoln County)
    6:30pm MDT Lincoln County Courthouse 103 3rd Street, Hugo, CO 80821
    Contact Information: lclanduse@lincolncountyco.us
    06 Boulder, CO
    (Boulder County)
    6:30pm MDT SHHQ TrainingRoom 5600 Flatiron Parkway, Boulder
    Contact Information: fgonzales@bouldercounty.org
    08 Thornton, CO
    (Adams County)
    6:00pm MDT Thornton City Hall 1st Floor Training Room, 9500 Civic Center Drive, Thornton, CO 80229
    Contact Information: gene.putman@cityofthornton.net

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