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Area forecast discussion
National Weather Service Cheyenne Wyoming
435 PM MST Fri Dec 13 2019

Short term...(this evening through sunday)
issued at 217 PM MST Fri Dec 13 2019

Winds diminishing slowly over the area this afternoon and high
winds no longer expected so have cancelled the High Wind Warning.
A few gusts over 40 mph still expected the rest of the afternoon.

Concerns will continue to focus on snowfall amounts across the County Warning Area
tonight through Saturday. Significant snowfall will continue to be
over the snowy and Sierra Madre ranges where 10 to 14 inches still
expected, especially on west-facing slopes before tapering off
Saturday night. Current warning looks in good shape and made
little change to ongoing forecast. Over the plains an inch or two
should be the rule, mainly falling on Saturday, with a bit more
possible around the Pine Ridge. A few snow showers around
Saturday night into Sunday as a shortwave passes across with
temperatures remaining on the chilly side.

Long term...(sunday night through friday)
issued at 217 PM MST Fri Dec 13 2019

Dry conditions expected to prevail next week as upper ridging
looks to be the main feature affecting the area. Still chilly on
Monday then warming Tuesday and Wednesday. Next upper shortwave
passes by weds night but models pretty dry with it. It does push a
cool front across the County Warning Area lowering temps a little for Thursday.
Ridging then amplifies a bit on Friday allowing for a bit warmer
conditions again. Could get rather windy in the wind prone areas
Friday as Lee troughing deepens over the High Plains.


Aviation...(for the 00z tafs through 00z Saturday evening)
issued at 426 PM MST Fri Dec 13 2019

Wind speeds will decrease quickly this evening down to 10-15 knots
by 03z for the Wyoming terminals. Broken to overcast skies will also be present
due to the upper level disturbance over the area. VFR conditions
are expected for the next 6 hours for all terminals except for
kcdr and kaia. Lingering low clouds and possibly a stray snow
shower will keep broken to overcast cigs in the MVFR range this evening
over the northern Panhandle terminals. Wind speeds should be 10
knots or less in the Panhandle the next 6 hours. By morning,
expect the upper level disturbance to enhance the possibility of
snow showers over a more widespread area for all terminals.


Fire weather...
issued at 217 PM MST Fri Dec 13 2019

No concerns with cool temperatures and recent precipitation
keeping conditions non-critical into early next week.


Cys watches/warnings/advisories...
Wyoming...Winter Storm Warning until 11 PM MST Saturday for wyz112-114.



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