FXUS65 KCYS 260531

Area Forecast Discussion
National Weather Service Cheyenne WY
1131 PM MDT Tue Sep 25 2018

.SHORT TERM...(This evening through Thursday)
Issued at 225 PM MDT Tue Sep 25 2018

Some cumulus moving southeast over the northeast part of the CWA
this afternoon with a few light showers close to the Black Hills.
This will dissipate early this evening as weak support from a
minor impulse treks out of that area. A chilly night across the
CWA as a cool surface high sinks down the high plains. Clear
skies, dry air and light winds will allow temp's to fall into the
30s to mid 20s over the CWA. have upgraded the Freeze watch to a
warning as those cold-favored areas should fall into the 20s. Much
of the rest of the CWA should not see a hard freeze but close to
freezing with areas of frost likely.

Warmer temperatures begin Weds in return flow under a dry
northwesterly flow aloft. Some lee troughing will cause winds to
increase over western areas which in turn will bring a return of
hazardous fire weather conditions. Similar pattern for Thursday
but a cold front will begin to cross the CWA from the north late
afternoon and evening with a few showers possible up north behind

.LONG TERM...(Thursday night through Tuesday)
Issued at 225 PM MDT Tue Sep 25 2018

Cooler again Friday with the front basically banking up against
the mtns. Likely some morning low clouds and fog/drizzle
particularly over the Panhandle in modest upslope flow. Warmer
temperatures come right back Saturday as the front washes east
with dry and warm conditions continuing through early next week.


.AVIATION...(For the 06Z TAFS through 06Z Wednesday night)
Issued at 1129 PM MDT Tue Sep 25 2018

VFR. Wind gusts from 18 to 25 knots after 17Z Wednesday.


Issued at 225 PM MDT Tue Sep 25 2018

A chilly night over the area before warming temperatures begin
their return Wednesday. Critical fire weather conditions are
likely to develop again mainly west of Interstate 25 Wednesday
afternoon as winds increase. Similar conditions are possible again
Thursday before the next cold front settles across the districts
Thursday night. Dry weather will hold until Friday when some
showers are expected mainly over the plains.


WY...Freeze Warning until 9 AM MDT Wednesday for WYZ101-102-105-110-

Frost Advisory until 9 AM MDT Wednesday for WYZ106>108-117>119.

Red Flag Warning from noon to 8 PM MDT Wednesday for WYZ301>309.

NE...Freeze Warning until 9 AM MDT Wednesday for NEZ002-003-095-096.

Frost Advisory until 9 AM MDT Wednesday for NEZ019>021-054-055.



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