Area Forecast Discussion
Issued by NWS Riverton, WY

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000
FXUS65 KRIW 222137
AFDRIW

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE RIVERTON WY
337 PM MDT SAT AUG 22 2015

.SHORT TERM...TONIGHT THROUGH SUNDAY

THE SOUTHWEST BOUND COLD FRONT HAS GOTTEN HUNG UP ALONG THE
CONTINENTAL DIVIDE. SMOKE AND NORTHEAST WINDS ALONG WITH COOL
TEMPERATURES HAVE BEEN THE RULE EAST OF THE DIVIDE TODAY AS SMOKE
POURS IN FROM MONTANA AND GETS TRAPPED WITHIN THE FRONTAL
INVERSION. CONDITIONS HAVE BEEN ESPECIALLY CHILLY IN NORTHERN
JOHNSON COUNTY TODAY WHERE TEMPERATURES HAVE REMAINED IN THE
UPPER 50S THIS AFTERNOON ALONG WITH STRONG POST FRONTAL NORTH
WINDS OF OVER 50 MPH AT THE BUFFALO AIRPORT WHERE WINDS CONTINUE
TO HOWL. THE LOW CLOUDS THAT INITIALLY ACCOMPANIED THE FRONT ALONG
AND EAST OF THE BIG HORN MTNS AND CASPER ARCH...ALONG THE OWL
CREEK MTNS AND ALONG AND JUST NORTH OF THE GREEN MTNS HAVE
DIMINISHED. THESE LOW CLOUDS WENT UNNOTICED UNLESS ONE WAS
DIRECTLY UNDERNEATH THEM THANKS TO THE SMOKE OBSCURING THE SKY.
IN THE MEANTIME...SOUTHWEST OF THE FRONT...BRISK WEST WINDS ALONG
WITH AN RH IN THE LOW TO MID TEENS WERE PREVALENT ACROSS
SWEETWATER...UINTA AND SOUTHERN LINCOLN COUNTIES FOR THE SECOND
DAY IN A ROW WHERE THE RED FLAG WARNING WILL RIDE THROUGH 8 PM.
THE FRONT WILL EVENTUALLY OVERTAKE MOST OF THE CWA BY MID TO LATE
EVENING TONIGHT AS WINDS VEER TO THE EAST NORTHEAST ACROSS
SWEETWATER COUNTY. ANY LINGERING CLOUDS WILL DISSIPATE THIS
EVENING AS POST EXITING TROUGH STRONG SUBSIDENCE AND CONFLUENT
UPPER FLOW CONTINUES. WITH CLEARING SKIES AND COOLER AIR SETTLING
IN BEHIND THE FRONT...EXPECT A CHILLY NIGHT TONIGHT AND EARLY
SUNDAY MORNING WITH TEMPS APPROACHING OR DROPPING A LITTLE BELOW
FREEZING IN THE FAR WEST VALLEYS AND BASINS AND 30S COMMON AT THE
LOWER ELEVATIONS EAST OF THE DIVIDE. AN SPS WAS SENT TO HILITE THE
COLD IN THE WEST. ON SUNDAY...WARM AIR ADVECTION WILL TAKE OVER
AS THE JET STREAM QUICKLY SHIFTS BACK NORTH OF THE AREA WITH A
WARMER AND DRY DAY IN STORE. THERE WILL BE SOME AFTERNOON CLOUDS
AND PERHAPS A STRAY SHOWER OVER THE HIGHEST PEAKS AS A WEAK UPPER
LEVEL DISTURBANCE TRACKS EAST NORTHEAST FROM NORTHERN CALIFORNIA.







.LONG TERM...SUNDAY NIGHT THROUGH SATURDAY


&&

.AVIATION.../00Z ISSUANCE/


&&

.FIRE WEATHER...


&&

.RIW WATCHES/WARNINGS/ADVISORIES...
RED FLAG WARNING UNTIL 8 PM MDT THIS EVENING FOR WYZ277-279.

&&

$$

SHORT TERM...LIPSON
LONG TERM...SKRBAC
AVIATION...LIPSON
FIRE WEATHER...LIPSON



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