From Chief Meteorologist Steve Hamilton:
mymountaintown.com/expert-local-weather
Prepare for Dangerous Cold and Wind Chill...
Tuesday and Wednesday will stay relatively mild with near-average daytime highs. Wind will get increasingly gusty, especially Wednesday, as a mass of very cold Arctic air closes in on eastern Colorado. By late Wednesday, we'll start to see a few snow showers popping up in the afternoon and the wind will pick up, with gusts at 25 to 35 mph. The Arctic air rolls in late Wednesday night into Thursday, with lows going well below zero for most of our area. Combined with the wind, it'll feel more like -35 to -50 occasionally. Thursday's highs will be near zero throughout the Foothills with extremely cold wind chills continuing. Again Thursday night, the lows will drop well below zero with dangerous wind chills. The wind will start calming down on Friday, and temperatures will begin to moderate, as the cold air mass moves east. Still cold, but not "as" cold for Christmas weekend.
Wind Chill Watch
URGENT - WINTER WEATHER MESSAGE
National Weather Service Denver CO
352 AM MST Tue Dec 20 2022
COZ031-033-034-202200-
/O.NEW.KBOU.WS.A.0010.221221T1900Z-221222T1300Z/
/O.CON.KBOU.WC.A.0001.221222T0300Z-221223T1800Z/
West Jackson and West Grand Counties Above 9000 Feet-South and East Jackson/Larimer/North and Northeast Grand/Northwest Boulder Counties Above 9000 Feet-South and Southeast Grand/West Central and Southwest Boulder/Gilpin/
Clear Creek/Summit/North and West Park Counties Above 9000 Feet-
Including the cities of Mt Zirkel, Berthoud Pass, Indian Peaks, Winter Park,
Breckenridge, East Slopes Southern Gore Range, Rocky Mountain National Park, Willow Creek Pass,
East Slopes Mosquito Range, Kenosha Mountains, Rabbit Ears Range, Cameron Pass,
Mount Evans, Williams Fork Mountains,
Eisenhower Tunnel, and Laramie and Medicine Bow Mountains
352 AM MST Tue Dec 20 2022
...
WINTER STORM WATCH IN EFFECT FROM WEDNESDAY AFTERNOON THROUGH LATE WEDNESDAY NIGHT...
...WIND CHILL WATCH REMAINS IN EFFECT FROM WEDNESDAY EVENING THROUGH FRIDAY MORNING...
* WHAT...
Heavy snow possible, accumulations between 3 and 12 inches with gust as high as 55 mph, blowing snow. Dangerously cold wind chills possible as low as 50 below zero.
* WHERE...Rabbit Ears Range and Pass, Rocky Mountain National Park and the Medicine Bow Range, the mountains of Summit County, the Mosquito Range, the Indian Peaks, and the Park and Gore Ranges.
* WHEN...Greatest snowfall expected Wednesday afternoon through Wednesday night. Dangerous wind chill expected to persist late Wednesday through early Friday.
* IMPACTS...Travel could be very difficult. Widespread blowing snow could significantly reduce visibility. The hazardous conditions could impact the Wednesday evening and Thursday morning commutes. The dangerously cold wind chills could cause frostbite on exposed skin in as little as 5 minutes.
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
Winter Storm Watch and Wind Chill Watch
URGENT - WINTER WEATHER MESSAGE
National Weather Service Denver CO
352 AM MST Tue Dec 20 2022
COZ030-032-035>051-202200-
/O.CON.KBOU.WC.A.0001.221222T0300Z-221223T1800Z/
Jackson County Below 9000 Feet-Grand and Summit Counties Below 9000 Feet-
Larimer and Boulder Counties Between 6000 and 9000 Feet-
Jefferson and West Douglas Counties Above 6000 Feet/Gilpin/Clear Creek/Northeast Park Counties Below 9000 Feet-Central and Southeast Park County-
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-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 Fort Morgan, Leader, Spicer,
Lakewood, Fondis, Larkspur, Deer Trail, Matheson, Cope, Castle Rock, Amherst,
Georgetown, Haxtun,
Fairplay, Idaho Springs, Roggen,
Littleton, Sedgwick, Briggsdale, Parker, Westcreek, Limon, Elbert, Hot Sulphur Springs, Sterling, Golden, Pawnee Buttes, Peetz,
Lake George, Grover, Goodrich, Estes Park, Byers, Glendevey, Raymer, Loveland, Fort Lupton, Crook, Last Chance, North Park, Kremmling,
Bailey, Stoneham, Boulder, Nederland,
South Park, Ovid, Bennett,
Arvada, Rand,
City of Denver, Otis, Granby, Karval, Brighton, Fort Collins, Brush, Wiggins, Longmont, Holyoke, Fraser, Highlands Ranch, Kutch, Merino, Walden,
Hartsel, Nunn, Dillon, Eaton, Forder, Hugo, Julesburg, Hereford, Akron, Agate, Grand Lake, Kiowa, Red Feather Lakes,
Central City, Aurora, Gould,
Denver International Airport, Punkin Center, Greeley, and
Evergreen
352 AM MST Tue Dec 20 2022
...
WIND CHILL WATCH REMAINS IN EFFECT FROM WEDNESDAY EVENING THROUGH FRIDAY MORNING...
* WHAT...
Dangerously cold wind chills possible, as low as 55 below zero.
* WHERE...All of northeast and north central Colorado below 6000 feet, including the Denver metro area.
* WHEN...From Wednesday evening through Friday morning.
* IMPACTS...The dangerously cold wind chills could cause frostbite on exposed skin in as little as 5 minutes.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
The combination of wind and cold temperatures will create dangerously cold wind chill. Avoid outside activities if possible. When outside, limit exposure time, take frequent warming breaks, and make sure you dress warmly in several layers of clothing, including a hat and mittens.
For more information from the National Weather Service, visit
weather.gov/bou