Area Forecast Discussion
Issued by NWS Cheyenne, WY

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FXUS65 KCYS 212045

Area Forecast Discussion
National Weather Service Cheyenne WY
245 PM MDT Wed Mar 21 2018

.SHORT TERM...(This evening through Friday)
Issued at 245 PM MDT Wed Mar 21 2018

Upper ridge will build some over the area overnight through
Thursday allowing for mild and fairly quiet weather. main
difficulty will be with varying amounts of mid and high clouds
moving through the ridge ahead of an upper trough near the west
coast. A piece of energy will move out ahead of this trough
Thursday night and across the region on Friday bringing some rain
and mtn snow showers as well as a little cooler air on Friday.
Snow levels Friday should stay fairly high with snow mainly over
the higher mtn tops.

.LONG TERM...(Friday night through Wednesday)
Issued at 245 PM MDT Wed Mar 21 2018

Generally mild across the CWA Saturday through Sunday under
southwesterly upper flow. Widely scattered mainly afternoon
showers possible mainly out west both days as weak impulses
lift across the area. Things get more interesting early next
week as an upper low cuts off over the southwest CONUS then moves
little through Tuesday before opening on Weds. GFS showing quite a
bit of pcpn late Monday through Tuesday while the EC a little
faster and with less pcpn. Will have to watch closely over the
coming days as snow levels look to lower as cooler temps filter
into the region.


.AVIATION...(For the 18Z TAFS through 18Z Thursday afternoon)
Issued at 1137 AM MDT Wed Mar 21 2018

Upper level ridge will continue to dominate the area during the
next couple of days, resulting in VFR conditions. It will be
become a bit breezy at RWL and LAR on Thursday morning as the
upper level trof approaches the northwest Pacific coastline and
increases the pressure level gradient.


Issued at 245 PM MDT Wed Mar 21 2018

Fire weather concerns expected to remain low for the rest of the
week with most weather factors staying non-critical. Some gusty
winds late in the week but cooling temperatures and increasing
chances for rain and snow will mitigate conditions.




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