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Hazardous Weather Outlook

Hazardous Weather Outlook
National Weather Service Denver/Boulder CO
1145 AM MST Thu Dec 12 2019

COZ030>051-131845-
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-
1145 AM MST Thu Dec 12 2019

...STRONG WINDS AND SNOW IN THE MOUNTAINS TONIGHT THROUGH SATURDAY...

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

.DAY ONE...This Afternoon and Tonight

Snow showers will continue over the higher mountains this
afternoon with accumulations of up to 2 inches. The snow will
increase tonight, with a period of heavy snow possible this
evening. Winds will also increase overnight, with gusts up to 60
mph over the ridges producing near blizzard conditions, and some
drifting snow in the valleys. Accumulations of 6 to 12 inches are
expected overnight tonight in the higher mountains with 2 to 4
inches in the valleys of Grand and Jackson counties.

.DAYS TWO THROUGH SEVEN...Friday through Wednesday

Moderate to heavy snowfall will be ongoing in the mountains
Friday morning along with strong winds which will result in
hazardous travel conditions. Snow rates will decrease in the
mountains Friday afternoon as the initial system responsible for
bringing the snow departs Colorado. Despite the lull in snow,
travel conditions may not improve greatly because of the strong
winds and blowing snow. Another system will increase snow rates
in the mountains Friday night through Saturday night with travel
continuing to be hazardous. A third 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. A high pressure system will put an
end to the snow in the mountains on Monday and will keep
conditions dry through Wednesday. Significant snow accumulations
are likely in the high country as the snow stacks up over a three
day period.

The plains will have a slight chance of snow from Friday night
through Saturday and then an increased chance of snow Saturday night
and Sunday with a frontal passage. At this time the snowfall looks
light, though there is a bit of uncertainty.

.SPOTTER INFORMATION STATEMENT...

Snowfall reports from spotters will be appreciated.

$$

Gimmestad/Bowen



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