Area Forecast Discussion
Issued by NWS Cheyenne, WY

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FXUS65 KCYS 080936
AFDCYS

Area Forecast Discussion
National Weather Service Cheyenne WY
236 AM MST Fri Dec 8 2017

.SHORT TERM...(Today through Sunday)
Issued at 235 AM MST Fri Dec 8 2017

Not much change in the forecast in the short term. High pressure
stationary over the west coast blocking any systems from the
Pacific to move on shore.

Am concerned with the winds. GFS 850/700mb winds quite strong
across the eastern portion of the CWFA. Will see breezy conditions
for the Panhandle over to the east slopes of the Laramie Range.
GFS forecasting 40-45kt 850mb winds over the Panhandle this
afternoon that could push us close to warning criteria. Decided to
hold off on any wind headlines. Day shift will need to monitor
wind speeds though through the day.

Fire weather wise...think afternoon humidity will stay above
critical levels with upper teens and low 20 percent today and
Saturday. But Sunday may need a headline as humidity gets pretty
low.

.LONG TERM...(Sunday night through Thursday)
Issued at 235 AM MST Fri Dec 8 2017

Next week will feature above normal temperatures (normal highs
this time of year are in the 30s) and continued dry conditions.
Pattern will remain largely unchanged from the short-term period,
with a highly amplified ridge of high pressure situated across the
west coast, with a deep trough of low pressure across the Great
Lakes and eastern U.S. Tuesday looks to be the warmest day as
highs warm into the 40s west of the Laramie Range and 50s to near
60s on the eastern plains. Although high winds are not seen at
this time, the typically breezy afternoons are expected with gusts
in the 25-35 mph range. Even looking beyond this period, no
significant cold snaps are seen on the horizon.

&&

.AVIATION...(For the 06Z TAFS through Friday evening)

Sky conditions will gradually improve tonight with increasing CIGS
and dry conditions into early Friday.  It will remain windy through
Friday with gusts up to 40 knots expected, mainly across the eastern
plains of southeast Wyoming and western Nebraska. Winds will slowly
diminish by late Friday evening.

&&

.FIRE WEATHER...
Issued at 245 AM MST Fri Dec 8 2017

High pressure over the west coast blocking any Pacific storm
systems from moving into the area. Expect mostly sunny skies and
breezy north to northwest winds each day. Slowly warming
temperatures with afternoon humidity falling into the upper teens
and low 20 percent range. Dry day Sunday for areas east of the
Laramie Range could lead to elevated to locally critical fire
weather conditions as afternoon humidity falls to the low to mid
teens.


&&

.CYS WATCHES/WARNINGS/ADVISORIES...
WY...None.
NE...None.

&&

$$

SHORT TERM...GCC
LONG TERM...CAH
AVIATION...TJT
FIRE WEATHER...GCC



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