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Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Denver/Boulder CO
1116 AM MDT Sun Apr 18 2021

COZ030>051-191730-
Jackson County Below 9000 Feet-
West Jackson and West Grand Counties Above 9000 Feet-
Grand and Summit Counties Below 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-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-
1116 AM MDT Sun Apr 18 2021


This hazardous weather outlook is for northeast and north central
Colorado.

.DAY ONE...Today and Tonight

Warm and dry weather today as a ridge moves overhead, temperatures
will be right around normal for this time of year. A few brief
snow showers will be possible over the Continental Divide. Gusty
winds to 25 mph will occur over the eastern plains this afternoon.

.DAYS TWO THROUGH SEVEN...Monday through Saturday

The next storm will bring a strong cold front and widespread
snowfall to all the forecast area Monday and Monday night. Snowfall
amounts could be significant in mountains and foothills with up
to 15 inches of new snow by Tuesday morning by sunrise. The plains
to see 2 to 7 inches during that same time frame. Travel conditions
will become treacherous with icy and snow packed roads. Depending
on how much the skies clear-out on Tuesday morning, record low
temperatures are possible for April 20th. Tuesday into Wednesday
should be dry, then an unsettled pattern moves in from Wednesday
afternoon through Friday with another good chance of precipitation.
It looks a bit warmer later in the week, so rain may fall over
the plains, but still snow in the mountains. Saturday looks dry
and warmer.

.SPOTTER INFORMATION STATEMENT...

Spotter reports will not be needed today or tonight.

$$



Winter Storm Watch

URGENT - WINTER WEATHER MESSAGE...CORRECTED
National Weather Service Denver CO
444 AM MDT Sun Apr 18 2021

...HEAVY SNOW AND MUCH COLDER TEMPERATURES MOVING IN MONDAY...

.A strong cold front will move in around noon on Monday, with
snowfall rates in the northern Front Range mountains and foothills
of near an inch per hour in the afternoon and evening. Temperatures
will drop quickly, causing possible flash freeze on roads, with
readings dropping into the single digits overnight.

COZ033-035-181845-
/O.COR.KBOU.WS.A.0003.210419T1800Z-210420T0900Z/
South and East Jackson/Larimer/North and Northeast
Grand/Northwest Boulder Counties Above 9000 Feet-Larimer and
Boulder Counties Between 6000 and 9000 Feet-
Including the cities of Glendevey, Nederland, Rocky Mountain
National Park, Laramie and Medicine Bow Mountains, Red Feather
Lakes, Cameron Pass, Estes Park, Willow Creek Pass, and Rabbit
Ears Range
444 AM MDT Sun Apr 18 2021

...WINTER STORM WATCH IN EFFECT FROM MONDAY AFTERNOON THROUGH LATE
MONDAY NIGHT...

* WHAT...Heavy snow possible. Total snow accumulations of 8 to 14
  inches possible. Winds could gust as high as 35 mph.

* WHERE...Rocky Mountain National Park and the Medicine Bow Range,
  and The Northern Front Range Foothills.

* WHEN...From Monday afternoon through late Monday night.

* IMPACTS...Roads will likely become slick and hazardous. Snow
  covered roads will make travel hazardous. Travel could be very
  difficult.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Monitor the latest forecasts for updates on this situation.

&&

$$

For more information from the National Weather Service, visit
https://weather.gov/bou

Kriederman/Kalina



U.S. Dept. of Commerce
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Silver Spring, MD 20910
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