Area Forecast Discussion
Issued by NWS Cheyenne, WY

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309
FXUS65 KCYS 182130
AFDCYS

Area Forecast Discussion
National Weather Service Cheyenne WY
230 PM MST Sat Nov 18 2017

.SHORT TERM...(This evening through Monday)
Issued at 230 PM MST Sat Nov 18 2017

Quiet weather expected across the CWA through Sunday with just
some high clouds possibly moving across at times. Gusty winds this
afternoon will drop off around sunset though still a bit gusty
around the mtns. Warmer Sunday as lee troughing develops over the
high plains and downslope flow results. Concerns then shift to a
potential high wind event mainly for the wind-prone areas Sunday
night and Monday. 7H winds increase across se Wy Sunday afternoon
with 50+ knot winds progged from about ARl to west of CYS by mid-
evening. Should see strong winds developing in the wind prone
areas during the evening. Have backed off a bit on the initiation
of the current high wind watch otherwise will maintain it for the
current locations. Mild and breezy to windy elsewhere on Monday
with no pcpn expected.

.LONG TERM...(Monday night through Saturday)
Issued at 230 PM MST Sat Nov 18 2017

Overall a fairly mild and quiet week expected with just a couple
modest disturbances bringing some mtn snow showers mainly Monday
night into Tuesday night. Otherwise upper ridging over the
western CONUS will provide the mild and mainly dry weather through
the period with breezy to windy conditions at times mainly over se
WY. Could turn a little cooler by Saturday as some shortwave
energy flattens the upper ridge and pushes a cool front across the
area.

&&

.AVIATION...(For the 18Z TAFS through 18Z Sunday morning)
Issued at 1008 AM MST Sat Nov 18 2017

VFR through the period.  There will be some gusty west to
northwest winds this afternoon with gusts over 30kt in some areas.
Winds will diminish towards 00Z.

&&

.FIRE WEATHER...
Issued at 230 PM MST Sat Nov 18 2017

Main concerns will be with the wind Monday which will be
accompanied by some low afternoon RHs from far se Wy into the
southern Panhandle. Conditions may get close to critical for a
time Monday afternoon before higher humidities return Tuesday.
Elsewhere concerns remaining quite low.

&&

.CYS WATCHES/WARNINGS/ADVISORIES...
WY...High Wind Watch from Sunday evening through Monday afternoon for
     WYZ106-110-116-117.

NE...None.
&&

$$

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



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