Hazardous Weather Outlook
Issued by NWS Denver/Boulder, CO

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HWOBOU

Hazardous Weather Outlook
National Weather Service Denver/Boulder CO
601 AM MDT Thu Apr 27 2017

COZ030>051-281215-
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-
601 AM MDT Thu Apr 27 2017

...WINTER WEATHER ADVISORY FOR THE NORTHERN MOUNTAINS TODAY...
...WINTER STORM WATCH FOR THE FRONT RANGE FOOTHILLS AND PALMER
DIVIDE FRIDAY NIGHT AND SATURDAY...

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

.DAY ONE...Today and Tonight

Snow will be heavy at times in the northern Colorado mountains
this morning, resulting in slow and hazardous winter travel
conditions. This includes I-70 through Summit county, and Highway
40 over Berthoud Pass and Rabbit Ears Pass.  Snow intensity will
decrease and transition to showers in the afternoon. On the
plains, rain showers will become more numerous this morning and
spread east across the plains through the afternoon and evening. A
few thunderstorms will also develop with gusty winds up to 35
mph, lightning, and small hail possible.

Showers on the plains will end across all but the far northeast
corner of the state tonight. In the mountains, mainly light snow
showers will continue. Additional snow accumulations from this
morning through tonight are expected to range between 4 and 8
inches over the mountains above 9000 feet.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

A late season storm system is expected to drop toward the Four
Corners region Friday night as a strong cold front moves out of
Wyoming and across northeast Colorado. Temperatures will be
turning colder over the plains with snow developing in the Front
Range foothills and out onto the plains. Significant snowfall will
be possible in the foothills and over the Palmer Divide where a
Winter Storm Watch is in effect. Snow accumulations up to a foot
will be possible in the foothills. Snow accumulations in the
Denver area will be lighter, but snow accumulating on leafed out
vegetation may lead to some breaking tree branches.

The snow storm should be moving out of the state by Saturday
afternoon and evening, but cool and unsettled weather may last
through Tuesday with a chance of afternoon and evening showers
each day. Warmer and drier weather are expected to return
Wednesday.

.SPOTTER INFORMATION STATEMENT...

Spotter activation will not be needed today or tonight.

$$



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