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Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Denver/Boulder CO
517 AM MST Fri Dec 13 2019

COZ030>051-141230-
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-
517 AM MST Fri Dec 13 2019

...STRONG WINDS AND SNOW IN THE MOUNTAINS TODAY THROUGH
TOMORROW...

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

.DAY ONE...Today and Tonight

A Winter Storm Warning is now in effect in the north central
Colorado mountains from today through 11 PM MST Saturday night.
Pacific moisture being brought into the state by a strong jet
stream aloft will continue producing snow in the mountains
through today and tonight. Three to 7 inches of new snow are
expected to fall today and another 5 to 10 inches may fall
tonight. Strong winds will also continue over higher elevations
and passes with gusts as high as 60 MPH at times. Blowing and
drifting snow will reduce visibilities and could make travel
difficult. Snow accumulations will be lighter in the valleys of
Grand and Jackson counties. Travel in the mountains through this
weekend is expected to be adversely impacted.

On the plains, windy conditions are expected to develop as the
strong flow over the state is mixed down to the surface. West to
northwest winds are expected to increase to 30 to 40 MPH by this
afternoon along with some higher gusts at times. The gusty winds
may produce some patches of blowing dust at times. Winds will
decrease during the evening.

.DAYS TWO THROUGH SEVEN...Saturday through Thursday

Moderate to heavy snowfall will be ongoing Saturday morning and
will last through late Saturday evening in the mountains. Travel
will be hazardous due to snow rates between one to two inches per
hour along with blowing snow and gusty winds. The plains and urban
corridor will see a chance for light snow but little or no accumulation
is expected Saturday.

Another system will move through Colorado during the day on Sunday
lasting through Sunday night. This system will bring moderate snow
mainly to the central and southern mountains of Colorado while the
far northern mountains will see light amounts. Light to moderate
snow will fall across the urban corridor and plains with heavier
amounts farther south. Amounts across the Denver metro will be
between 1-4 inches.

There are no hazardous weather conditions expected Monday through
Thursday.

.SPOTTER INFORMATION STATEMENT...

Snowfall reports from spotters will be appreciated.

$$



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Page last modified: May 16, 2007
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