Area Forecast Discussion
Issued by NWS Cheyenne, WY

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FXUS65 KCYS 292119
AFDCYS

Area Forecast Discussion
National Weather Service Cheyenne WY
219 PM MST Tue Nov 29 2016

.SHORT TERM...(This evening through Thursday)
Issued at 219 PM MST Tue Nov 29 2016

Rather cold conditions will continue across the CWA through
Thursday but less wind than today.  Occluded upper low over
the ND/SD/MN area will begin to move east this evening and
progress across MN and Wisconsin through Weds night.  As it
does so the gusty winds and sctd snow showers will decrease
across the CWA this evening. Some snow showers will persist
over the higher mtns through Weds but amounts look to be on
the light side so will be able to allow the current warning
there to expire late this afternoon.  A low amplitude ridge
will pass by late Wednesday into Thursday with temperatures
warming a little as skies clear out some later tonight into
Weds.  Next shortwave nears the area late Thursday bringing
some snow showers back over far western areas.

.LONG TERM...(Thursday night through Tuesday)
Issued at 219 PM MST Tue Nov 29 2016

We will remain within the upper trough on Thursday night
through early Saturday, then heights aloft will begin to rise
through the weekend as shortwave ridging moves over the western
CONUS. Models show differences with the placement of the main
energy within the trough, but the main impacts will be similar.
That will mainly be cold, breezy, with snow showers in the
mountains through Saturday morning. Then as high pressure builds
in from the west, the sfc pressure gradient will strengthen and
thus westerly winds will become strong once again especially in
the wind prone areas through the weekend. A weak shortwave moving
over the Rockies in fast northwest flow will bring a return of
snow to the mountains Sunday night. Then as we head into early
next week, a much stronger Pacific storm system will move into the
Pacific northwest and looks to impact our forecast area beginning
late Monday. This system could be a significant snow producer, so
we`ll have to keep a close eye on it over the next week.

&&

.AVIATION...(For the 18Z TAFS through 18Z Wednesday afternoon)
Issued at 1046 AM MST Tue Nov 29 2016

MVFR to brief IFR conditions are anticipated in snow showers
through early this afternoon. Strong northwest winds gusting 40-50
kts will also continue this afternoon at many terminals as well,
especially across the east. Gusty winds will continue here through
tonight.

&&

.FIRE WEATHER...
Issued at 219 PM MST Tue Nov 29 2016

No concerns seen for the rest of the week with cool temperatures
and lighter winds keeping conditions non-critical.

&&

.CYS WATCHES/WARNINGS/ADVISORIES...
WY...High Wind Warning until 5 PM MST this afternoon for WYZ101-102-
     107-108-119.

     Winter Storm Warning until 5 PM MST this afternoon for WYZ112-
     114.

NE...High Wind Warning until 5 PM MST this afternoon for NEZ002-003-
     019>021-054-055-095-096.

&&

$$

SHORT TERM...RE
LONG TERM...RJM
AVIATION...RJM
FIRE WEATHER...RE


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