Area Forecast Discussion
Issued by NWS Cheyenne, WY

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FXUS65 KCYS 252055

Area Forecast Discussion
National Weather Service Cheyenne WY
255 PM MDT SUN SEP 25 2016

.SHORT TERM...(Tonight - Tuesday Night)

A gradual warming trend can be expected during the next few days as
upper-level ridging continues to build into the region. Chances for
precipitation through Tuesday night will be virtually zero along w/
mostly clear skies. The models show H7 temperatures climbing to +10
deg C or so by Tuesday afternoon, so expect daytime highs in the 75
to 85 degree range to the east of the Laramie Range.

.LONG TERM...(Wednesday through Sunday)
Issued at 255 PM MDT Sun Sep 25 2016

All models in generally good agreement into next weekend...showing
the upper level ridge axis remaining over Great Plains through
Thursday before some shortwave energy begins to lift northeast
across the Central Rockies by Friday and into next weekend.
Models do show some differences in timing with these the low confidence is reflected with the POP
forecast. High temperatures will generally be in the 70`s to
around 80 across most of the forecast area...with the warmest
temperatures across the lower elevations of western Nebraska and
far eastern Wyoming. Highs may remain in the upper 60`s west of
Interstate 25 later in the week as some mid to high clouds enter
the region. Kept POP around 20 percent late Friday through
Sunday...mainly in the afternoon...for some shower activity and
isolated thunder across the mountains and eastern plains as two
shortwave disturbances move out of the Great Basin region. The
strongest one appears to move across southeast Wyoming on
sunday...ahead of the main Pacific trough digging southeast into
the Great Basin region. Will have to keep an eye on this system as
we head into the weekend...with long range models showing 700mb
temperatures ranging from -4c to -8c behind the cold front and a
greater chance of widespread precipitation.


.AVIATION...(For the 18Z TAFS through Monday morning)

VFR conditions will continue today and through tonight. Northerly
winds may gust around 30 knots at times early this afternoon...but
will gradually subside by late this afternoon and this evening.


Issued at 211 PM MDT Sun Sep 25 2016

No major concerns with projected minimum RH values above 20 percent
through mid-week. It will be breezy at times, especially across the
typical wind corridors of southeast Wyoming, but overall conditions
will remain non-critical.


.CYS Watches/Warnings/Advisories...


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