Area Forecast Discussion
Issued by NWS Cheyenne, WY

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FXUS65 KCYS 222154

Area Forecast Discussion
National Weather Service Cheyenne WY
354 PM MDT Thu Mar 22 2018

Issued at 351 PM MDT Thu Mar 22 2018

After looking at the forecast soundings for the Arlington area
tonight, we have 60kts right off the surface out there tonight
into Friday morning. 850/700mb Craig to Casper gradients right
around 60mtrs after 06Z tonight through 18Z Friday. Decided to
issue a warning for the Arlington area. Updates sent.


.SHORT TERM...(This evening through Friday night)
Issued at 250 PM MDT Thu Mar 22 2018

Clouds gradually spreading east across the CWA this afternoon as
an upper ridge axis is also moving east over the plains. Expect
showers to increase over northern and western parts of the CWA
tonight as an upper shortwave lifts northeast towards the area.
Some snow will fall over the mtns but amounts not looking as great
as earlier with the best accumulations, about 3-6 inches, over
the higher peaks. Other concern later tonight is for some increase
in winds as the gradient sharpens for a time. Could get a few
gusts close to high wind speeds in the Arlington area but event
should be rather short-lived and marginal. On Friday the shortwave
will move over the high plains and with some afternoon instability
a few thunderstorms should occur especially over the Panhandle.
Clearing out Friday night with upper ridging rebuilding over the

.LONG TERM...(Saturday through Thursday)
Issued at 250 PM MDT Thu Mar 22 2018

Dry and mild across the CWA Saturday with southwesterly flow
aloft ahead of a digging upper trough over the Pacific northwest.
A weak impulse ejecting across the area ahead of the trough could
bring a few showers to western parts of the CWA Saturday night.
Sunday through Tuesday looking unsettled as the upper trough moves
slowly east. models still unsure as to the evolution of this
system but still favoring a cut-off low developing over the far
southwest Tuesday. Overall the models have backed off on QPF over
the CWA this period and the threat of heavy snow not as high now,
but still need to keep close watch on it. Cool and rather wet
Monday into Tuesday then milder Weds and Thursday.


.AVIATION...(For the 18Z TAFS through 18Z Friday afternoon)
Issued at 1228 PM MDT Thu Mar 22 2018

No significant impacts anticipated to general aviation ops as VFR
conditions anticipated for this TAF cycle. There is an outside
chance of a rogue -SHRA at KCDR this evening, but confidence was
too low to include anything above VCSH. Otherwise, anticipated
gusty southwest winds to develop at KRWL and KLAR with gusts of
30-40 knots expected.


Issued at 250 PM MDT Thu Mar 22 2018

No significant concerns seen through the weekend with weather
conditions generally non-critical. Unsettled conditions expected
as a couple disturbances bring scattered showers at times. A few
thunderstorms possible Friday afternoon.


WY...High Wind Warning from midnight tonight to noon MDT Friday for



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