Area Forecast Discussion
Issued by NWS Cheyenne, WY

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FXUS65 KCYS 180109 CCA

Area Forecast Discussion...Corrected
National Weather Service Cheyenne WY
702 PM MDT Mon Oct 17 2016

Issued at 700 PM MDT Mon Oct 17 2016

High Wind Warnings and Wind Advisory were allowed to expire at 7 pm.
West to northwest winds gusting to 25 to 45 mph will diminish this
evening as the post-frontal pressure gradient relaxes.


.SHORT TERM...(This evening through Wednesday)
Issued at 315 PM MDT Mon Oct 17 2016

Strong winds continuing across parts of the CWA this afternoon
with the strongest gusts from far southeast Wyoming into the
southern Panhandle where gusts over 65 mph have been recorded.
Expect these winds to begin falling off late this afternoon and
into this evening as the gradient relaxes significantly and a
shortwave over northeast Wyoming moves east across South Dakota.
Some cooler air will filter across the CWA overnight with a
surface high building over western Wyoming. A few showers over the
southern mtns this evening will dissipate leaving dry conditions
through Tuesday morning.

Next shortwave to affect the region will approach Tuesday
afternoon and should spread at least scattered showers into
southeast Wy during the afternoon. This will continue to spread
east into the Panhandle Tuesday evening...diminishing late. A
second push of cooler air will move in Tuesday night bringing
about 5-10 degrees of cooling for Weds. Another impulse will drop
southeast down the high plains Weds and bring some scattered
showers to mainly the northeast half of the CWA on Weds.

.LONG TERM...(Wednesday night through Sunday night)
Issued at 257 PM MDT Mon Oct 17 2016

The long term timeframe will start off quite cool with morning lows
on Thursday dropping into the 20s to low 30s across the area.
Broadscale high pressure building in from the west will bring drier
and warmer conditions to the forecast area through the remainder of
the period. Max temps will persist in the 60s and 70s. Winds will be
breezy each afternoon in this pattern, but chances for high winds
look low. Fire weather should be the main forecast concern through
the weekend. Dry and warm downslope winds could produce at least
elevated fire weather conditions each afternoon, with Saturday
potentially seeing critical humidities and winds.  No precip is
expected in the long term.


.AVIATION...(For the 00Z TAFS through 00Z Tuesday evening)
Issued at 512 PM MDT Mon Oct 17 2016

VFR. Gusty westerly winds 25-35 kt will diminish this evening. Skies
will become clear later this evening. Tuesday will not be as windy as
today with west-southwest winds gusting 20-30 kt. Mid and high clouds
will increase from west to east during the day. Any shower activity
will be confined to the mountains in the afternoon.


Issued at 257 PM MDT Mon Oct 17 2016

Opted to cancel the Red Flag warning as humidities have stayed up
this afternoon. Strong winds across the districts will diminish this
evening. less wind is then expected through the mid part of the week
though still a bit gusty across mainly southeast Wyoming in the
afternoons. Scattered rain and higher elevation snow showers are
expected mainly Tuesday night and Wednesday as a cold front passes
by with mild and dry weather to close out the week.




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