885 
FXUS65 KCYS 192027
AFDCYS

Area Forecast Discussion
National Weather Service Cheyenne WY
227 PM MDT Sat Sep 19 2020

.SHORT TERM...(This evening through Sunday)
Issued at 230 PM MDT Sat Sep 19 2020

Strong winds ongoing this afternoon...resulting in critical fire
weather conditions across much of the area. Cloud cover is keeping
humidity up some...but Red Flag Warning looks good and will keep
the warnings going through 8 PM this evening. Looking at fire
temperatures on GOES16...the Mullen Wildfire is really cranking
out in southeast Carbon County this afternoon.

Front moves through this evening shifting winds from southwest to
west. They stay elevated through the overnight hours with windy
conditions Sunday. 

.LONG TERM...(Sunday night through Saturday)
Issued at 300 PM MDT Sat Sep 19 2020

Winds ease Sunday evening as upper low tracks into the Dakotas.
Ridge builds back in through the upcoming week with warmer
temperatures and very low chances for rainfall.

&&

.AVIATION...(For the 18Z TAFS through 18Z Sunday afternoon)
Issued at 1117 AM MDT Sat Sep 19 2020

VFR flight conditions can be expected across the region this
afternoon through 0Z. HZ and potential FU are likely across the
SE WY terminals due to nearby wildfires. Visibility could
potentially decrease to 5SM for brief periods, but this was left
out of TAFs due to low confidence for SE WY terminals. Upper level
disturbance will present the opportunity for VCSH this afternoon
also for SE WY terminals. Gusty winds of 25-35 knots for WY, up 
to 20-25 knots for AIA/SNY through 0Z.

&&

.FIRE WEATHER...
Issued at 230 PM MDT Sat Sep 19 2020

Strong winds ongoing this afternoon across much of southeast
Wyoming...especially west of the Laramie Range. Gusts in excess of
40 mph being observed across FWZ 303 with 30 mph gusts in
304...306...308 and 309. Low pressure that is causing these winds
currently over Challis Idaho with cold front from Meeteetse to
Evanston Wyoming. Clouds are holding the winds down some and
keeping humidity slightly higher...but overall...Red Flag Warnings
look good for this afternoon and will continue them through 8 PM.
Front moves through southeast Wyoming after 8 PM across Carbon
County and towards 2200 for areas east of the Laramie Range. Wind
directions become more west to west northwest behind front and
will continue overnight into Sunday. Cooler temperatures Sunday
will aid in higher humidity and decreased fire weather conditions.
Less wind after Sunday will result in decreased fire weather
potential.

&&

.CYS WATCHES/WARNINGS/ADVISORIES...
WY...Red Flag Warning until 8 PM MDT this evening for WYZ301>310.

NE...None.
&&

$$

SHORT TERM...GCC
LONG TERM...GCC
AVIATION...BW
FIRE WEATHER...GCC