Alert archive / Colorado / Wind Chill Warnings in 2021
Wind Chill Warning 1, NWS Denver/Boulder, CO
NWS Denver/Boulder, CO issued this wind chill warning at Feb 14, 2021, 2:48 PM MST for 12 counties in Colorado. It was in force for 20 hr. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Feb 14, 2021, 2:48 PM MST (21:48 UTC)
- Expired
- Feb 15, 2021, 11:00 AM MST
- In force
- 20 hr
- Issued by
- NWS Denver/Boulder, CO
Counties Adams County, CO, Arapahoe County, CO, Douglas County, CO, Elbert County, CO, Larimer County, CO, Lincoln County, CO, Logan County, CO, Morgan County, CO, Phillips County, CO, Sedgwick County, CO, Washington County, CO, Weld County, CO
The radar
The Denver radar (KFTG), 69 km from the middle of the area, began a volume at 21:50 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
The nearest sounding before it
Denver, CO (KDNR), launched 12:00Z, 9.8 hours before the alert went out and 55 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 783 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 9 m²/s²
- 0-3 km storm-relative helicity
- 99 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
788 WWUS45 KBOU 142148 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver/Boulder CO 248 PM MST Sun Feb 14 2021 COZ041>051-150600- /O.UPG.KBOU.WC.Y.0002.000000T0000Z-210215T1800Z/ /O.NEW.KBOU.WC.W.0001.210214T2148Z-210215T1800Z/ Elbert/Central and East Douglas Counties Above 6000 Feet- Northeast Weld County-Central and South Weld County-Morgan County- Central and East Adams and Arapahoe Counties- North and Northeast Elbert County Below 6000 Feet/North Lincoln County- Southeast Elbert County Below 6000 Feet/South Lincoln County- Logan County-Washington County-Sedgwick County-Phillips County- Including Castle Rock, Elbert, Fondis, Kiowa, Larkspur, Briggsdale, Grover, Pawnee Buttes, Raymer, Stoneham, Eaton, Fort Lupton, Greeley, Roggen, Brush, Fort Morgan, Goodrich, Wiggins, Bennett, Byers, Deer Trail, Leader, Agate, Hugo, Limon, Matheson, Forder, Karval, Kutch, Punkin Center, Crook, Merino, Sterling, Peetz, Akron, Cope, Last Chance, Otis, Julesburg, Ovid, Sedgwick, Amherst, Haxtun, and Holyoke 248 PM MST Sun Feb 14 2021 ...WIND CHILL WARNING IN EFFECT UNTIL 11 AM MST MONDAY... * WHAT...Dangerously cold wind chills. Wind chills as low as 40 below zero. * WHERE...Portions of east central and northeast Colorado. * WHEN...Until 11 AM MST Monday. * IMPACTS...The dangerously cold wind chills could cause frostbite on exposed skin in as little as 10 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Avoid outside activities if possible. When outside, make sure you wear appropriate clothing, a hat, and gloves. && $$ COZ038>040-150600- /O.CON.KBOU.WC.Y.0002.000000T0000Z-210215T1800Z/ Larimer County Below 6000 Feet/Northwest Weld County- Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County- North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County- Including Fort Collins, Hereford, Loveland, Nunn, Arvada, Boulder, Golden, Lakewood, Longmont, Aurora, Brighton, City of Denver, Denver International Airport, Highlands Ranch, Littleton, and Parker 248 PM MST Sun Feb 14 2021 ...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST MONDAY... * WHAT...Very cold wind chills. Wind chills as low as 30 below zero. * WHERE...Denver, Boulder and the western suburbs of Denver and Larimer County below 6000 feet and Northwest Weld County. * WHEN...Until 11 AM MST Monday. * IMPACTS...The dangerously cold wind chills could cause frostbite on exposed skin in as little as 10 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves. && $$
3 follow-up statements
357 WWUS45 KBOU 150253 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver/Boulder CO 753 PM MST Sun Feb 14 2021 COZ038-151100- /O.UPG.KBOU.WC.Y.0002.000000T0000Z-210215T1800Z/ /O.EXA.KBOU.WC.W.0001.000000T0000Z-210215T1800Z/ Larimer County Below 6000 Feet/Northwest Weld County- Including Fort Collins, Hereford, Loveland, and Nunn 753 PM MST Sun Feb 14 2021 ...WIND CHILL WARNING IN EFFECT UNTIL 11 AM MST MONDAY... * WHAT...Dangerously cold wind chills. Wind chills as low as 35 below zero . * WHERE...Larimer County below 6000 feet and Northwest Weld County. * WHEN...Until 11 AM MST Monday. * IMPACTS...The dangerously cold wind chills could cause frostbite on exposed skin in as little as 10 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Avoid outside activities if possible. When outside, make sure you wear appropriate clothing, a hat, and gloves. && $$ COZ041>051-151100- /O.CON.KBOU.WC.W.0001.000000T0000Z-210215T1800Z/ Elbert/Central and East Douglas Counties Above 6000 Feet- Northeast Weld County-Central and South Weld County-Morgan County- Central and East Adams and Arapahoe Counties- North and Northeast Elbert County Below 6000 Feet/North Lincoln County- Southeast Elbert County Below 6000 Feet/South Lincoln County- Logan County-Washington County-Sedgwick County-Phillips County- Including Castle Rock, Elbert, Fondis, Kiowa, Larkspur, Briggsdale, Grover, Pawnee Buttes, Raymer, Stoneham, Eaton, Fort Lupton, Greeley, Roggen, Brush, Fort Morgan, Goodrich, Wiggins, Bennett, Byers, Deer Trail, Leader, Agate, Hugo, Limon, Matheson, Forder, Karval, Kutch, Punkin Center, Crook, Merino, Sterling, Peetz, Akron, Cope, Last Chance, Otis, Julesburg, Ovid, Sedgwick, Amherst, Haxtun, and Holyoke 753 PM MST Sun Feb 14 2021 ...WIND CHILL WARNING REMAINS IN EFFECT UNTIL 11 AM MST MONDAY... * WHAT...Dangerously cold wind chills. Wind chills as lows as 40 below zero. * WHERE...Portions of east central and northeast Colorado. * WHEN...Until 11 AM MST Monday. * IMPACTS...The dangerously cold wind chills could cause frostbite on exposed skin in as little as 10 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Avoid outside activities if possible. When outside, make sure you wear appropriate clothing, a hat, and gloves. && $$ COZ039-040-151100- /O.CON.KBOU.WC.Y.0002.000000T0000Z-210215T1800Z/ Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County- North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County- Including Arvada, Boulder, Golden, Lakewood, Longmont, Aurora, Brighton, City of Denver, Denver International Airport, Highlands Ranch, Littleton, and Parker 753 PM MST Sun Feb 14 2021 ...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST MONDAY... * WHAT...Very cold wind chills. Wind chills as low as 30 below zero. * WHERE...Denver, Boulder and the western suburbs of Denver. * WHEN...Until 11 AM MST Monday. * IMPACTS...The dangerously cold wind chills could cause frostbite on exposed skin in as little as 10 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... Use caution while traveling outside. Wear appropriate clothing, a hat, and gloves. && $$
305 WWUS45 KBOU 150956 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 256 AM MST Mon Feb 15 2021 COZ038-151800- /O.CON.KBOU.WC.W.0001.000000T0000Z-210215T1800Z/ Larimer County Below 6000 Feet/Northwest Weld County- Including the cities of Fort Collins, Loveland, Nunn, and Hereford 256 AM MST Mon Feb 15 2021 ...WIND CHILL WARNING REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING... * WHAT...Dangerously cold wind chills ongoing. Wind chills as low as 35 below zero. * WHERE...Fort Collins. * WHEN...Until 11 AM MST this morning. * IMPACTS...The dangerously cold wind chills could cause frostbite on exposed skin in as little as 10 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... The combination of wind and cold temperatures will create dangerously low wind chill values. Avoid outside activities if possible. When outside, make sure you wear appropriate clothing, a hat, and gloves. && $$ COZ041>051-151800- /O.CON.KBOU.WC.W.0001.000000T0000Z-210215T1800Z/ Elbert/Central and East Douglas Counties Above 6000 Feet- Northeast Weld County-Central and South Weld County-Morgan County- Central and East Adams and Arapahoe Counties-North and Northeast Elbert County Below 6000 Feet/North Lincoln County-Southeast Elbert County Below 6000 Feet/South Lincoln County-Logan County- Washington County-Sedgwick County-Phillips County- Including the cities of Wiggins, Fort Morgan, Elbert, Hugo, Roggen, Forder, Julesburg, Larkspur, Agate, Briggsdale, Leader, Sterling, Pawnee Buttes, Sedgwick, Crook, Akron, Raymer, Amherst, Fort Lupton, Cope, Ovid, Matheson, Peetz, Kiowa, Grover, Eaton, Deer Trail, Byers, Fondis, Kutch, Haxtun, Last Chance, Castle Rock, Goodrich, Stoneham, Karval, Greeley, Bennett, Otis, Punkin Center, Holyoke, Brush, Limon, and Merino 256 AM MST Mon Feb 15 2021 ...WIND CHILL WARNING REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING... * WHAT...Dangerously cold wind chills ongoing. Wind chills as low as 45 below zero. * WHERE...Portions of east central and northeast Colorado. * WHEN...Until 11 AM MST this morning. * IMPACTS...The dangerously cold wind chills could cause frostbite on exposed skin in as little as 10 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... The combination of wind and cold temperatures will create dangerously low wind chill values. Avoid outside activities if possible. When outside, make sure you wear appropriate clothing, a hat, and gloves. && $$ COZ031-151800- /O.NEW.KBOU.WW.Y.0012.210215T2100Z-210217T0100Z/ West Jackson and West Grand Counties Above 9000 Feet- Including the cities of Mt Zirkel 256 AM MST Mon Feb 15 2021 ...WINTER WEATHER ADVISORY IN EFFECT FROM 2 PM THIS AFTERNOON TO 6 PM MST TUESDAY... * WHAT...Snow expected. Total snow accumulations between 5 to 10 inches. Winds gusting as high as 40 mph over the ridges. * WHERE...Rabbit Ears Pass. * WHEN...From 2 PM this afternoon to 6 PM MST Tuesday. * IMPACTS...Travel could be very difficult. Roads will likely become slick and hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip.org && $$ COZ039-040-151800- /O.CON.KBOU.WC.Y.0002.000000T0000Z-210215T1800Z/ Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County-North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County- Including the cities of Boulder, Golden, Highlands Ranch, City of Denver, Lakewood, Aurora, Arvada, Littleton, Parker, Longmont, Denver International Airport, and Brighton 256 AM MST Mon Feb 15 2021 ...WIND CHILL ADVISORY REMAINS IN EFFECT UNTIL 11 AM MST THIS MORNING... * WHAT...Very cold wind chills ongoing. Wind chills as low as 25 below zero. * WHERE...Boulder and the western suburbs of Denver, and Denver. * WHEN...Until 11 AM MST this morning. * IMPACTS...The dangerously cold wind chills could cause frostbite on exposed skin in as little as 10 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... The combination of wind and cold temperatures will create dangerously low wind chill values. If you go outside, cover all parts of your body, especially your head, face, and hands. && $$ For more information from the National Weather Service, visit https://weather.gov/bou Meier
703 WWUS45 KBOU 151741 WSWBOU URGENT - WINTER WEATHER MESSAGE National Weather Service Denver CO 1041 AM MST Mon Feb 15 2021 COZ050-051-160145- /O.EXP.KBOU.WC.W.0001.000000T0000Z-210215T1800Z/ /O.NEW.KBOU.WC.Y.0003.210216T0100Z-210216T1700Z/ Sedgwick County-Phillips County- Including the cities of Ovid, Holyoke, Julesburg, Amherst, Sedgwick, and Haxtun 1041 AM MST Mon Feb 15 2021 ...WIND CHILL ADVISORY IN EFFECT FROM 6 PM THIS EVENING TO 10 AM MST TUESDAY... ...WIND CHILL WARNING WILL EXPIRE AT 11 AM MST THIS MORNING... * WHAT...Very cold wind chills expected. Wind chills as low as 25 below zero. * WHERE...Julesburg, and Holyoke. * WHEN...From 6 PM this evening to 10 AM MST Tuesday. * IMPACTS...The dangerously cold wind chills could cause frostbite on exposed skin in as little as 30 minutes. PRECAUTIONARY/PREPAREDNESS ACTIONS... The combination of wind and cold temperatures will create dangerously low wind chill values. If you go outside, cover all parts of your body, especially your head, face, and hands. && $$ COZ038-041>049-151845- /O.EXP.KBOU.WC.W.0001.000000T0000Z-210215T1800Z/ Larimer County Below 6000 Feet/Northwest Weld County- Elbert/Central and East Douglas Counties Above 6000 Feet- Northeast Weld County-Central and South Weld County-Morgan County- Central and East Adams and Arapahoe Counties-North and Northeast Elbert County Below 6000 Feet/North Lincoln County-Southeast Elbert County Below 6000 Feet/South Lincoln County-Logan County- Washington County- Including the cities of Wiggins, Fort Morgan, Elbert, Hugo, Roggen, Forder, Larkspur, Agate, Briggsdale, Leader, Sterling, Pawnee Buttes, Crook, Akron, Raymer, Fort Lupton, Cope, Matheson, Loveland, Peetz, Kiowa, Grover, Eaton, Deer Trail, Byers, Fondis, Kutch, Last Chance, Castle Rock, Goodrich, Stoneham, Fort Collins, Greeley, Bennett, Otis, Punkin Center, Nunn, Brush, Karval, Limon, Hereford, and Merino 1041 AM MST Mon Feb 15 2021 ...WIND CHILL WARNING WILL EXPIRE AT 11 AM MST THIS MORNING... $$ COZ039-040-151845- /O.EXP.KBOU.WC.Y.0002.000000T0000Z-210215T1800Z/ Boulder And Jefferson Counties Below 6000 Feet/West Broomfield County-North Douglas County Below 6000 Feet/Denver/West Adams and Arapahoe Counties/East Broomfield County- Including the cities of Boulder, Golden, Highlands Ranch, City of Denver, Lakewood, Aurora, Arvada, Littleton, Parker, Longmont, Denver International Airport, and Brighton 1041 AM MST Mon Feb 15 2021 ...WIND CHILL ADVISORY WILL EXPIRE AT 11 AM MST THIS MORNING... $$ COZ031-160145- /O.CON.KBOU.WW.Y.0012.210215T2100Z-210217T0100Z/ West Jackson and West Grand Counties Above 9000 Feet- Including the cities of Mt Zirkel 1041 AM MST Mon Feb 15 2021 ...WINTER WEATHER ADVISORY REMAINS IN EFFECT FROM 2 PM THIS AFTERNOON TO 6 PM MST TUESDAY... * WHAT...Snow expected. Total snow accumulations between 5 to 10 inches with locally higher amounts. Winds gusting as high as 40 mph over the ridges. * WHERE...Rabbit Ears Pass. * WHEN...From 2 PM this afternoon to 6 PM MST Tuesday. * IMPACTS...Travel could be very difficult. Roads will likely become slick and hazardous. PRECAUTIONARY/PREPAREDNESS ACTIONS... Slow down and use caution while traveling. The latest road conditions for Colorado can be obtained by calling 5 1 1 or by going to www.cotrip.org && $$ For more information from the National Weather Service, visit https://weather.gov/bou Barjenbruch
Nearby
Wind Chill Warnings in Colorado, 2021Every wind chill warning in 2021
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.