Area Forecast Discussion
Issued by NWS Cheyenne, WY

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FXUS65 KCYS 241727

Area Forecast Discussion
National Weather Service Cheyenne WY
1125 AM MDT Thu May 24 2018

.SHORT TERM...(Today through Saturday)
Issued at 313 AM MDT Thu May 24 2018

Will see a break from the rain the next few days as high pressure
will build over the Rocky Mtns today through Friday. Currently
clear across the CWA as drier air has moved into the area on the
south side of an upper low over eastern Montana. This system will
nudge eastward today leaving westerly flow aloft over the CWA
maintaining the drier airflow. Plenty of sunshine will allow for
warmer temperatures today with quite warm conditions Friday and
Saturday. Max temps likely exceeding 90F over the Panhandle
Saturday as 7H temps warm to around 15C over the high plains. A
few showers or storms possible mainly over the mtns Saturday
afternoon as the upper flow turns southerly ahead of an upper low
that will move into southern Nevada and allows for some increase
in moisture.

.LONG TERM...(Saturday night through Wednesday)
Issued at 313 AM MDT Thu May 24 2018

Another low pressure system still on track for Sunday afternoon
that will increase convection over the CWFA. Not many changes from
what was seen last night in forecast guidance. Downstream blocking
ridge over the Dakotas to central Nebraska slows the low down for
afternoon and evening shower/thunderstorms chances through Tuesday
before the low tracks east Tuesday night.

Memorial Day could be pretty much a wash out as both the GFS and
ECMWF showing fairly widespread afternoon/evening QPF over most of
the CWFA. Severe thunderstorms looking likely Monday afternoon as
CWFA on favorable left/front quadrant of a 80+ knot jet nose
tracking through central and northeast Colorado.


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

VFR conditions expected as relatively light westerly winds will
prevail over southeast Wyoming and the Nebraska Panhandle through


Issued at 313 AM MDT Thu May 24 2018

Fire weather concerns should remain low for the next few days. High
Lowest afternoon humidities will fall to under 20 percent over
western areas Friday and Saturday but winds will be light. Cooler
temperatures will return Sunday with scattered showers and
thunderstorms Sunday into early next week.




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