709
FXUS65 KRIW 140834
AFDRIW
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE RIVERTON WY
234 AM MDT SUN JUN 14 2026
KEY MESSAGES
- CLOUD COVER CLEARS EAST OF THE CONTINENTAL DIVIDE DURING THE
MIDDAY HOURS TODAY, ALLOWING FOR DAYTIME HIGH TEMPERATURES TO
REBOUND 5 TO 10 DEGREES. AREAS WEST OF THE DIVIDE SEE LITTLE
CLOUD COVER AND SEASONAL TEMPERATURES.
- TEMPERATURES REBOUND TO SEASONAL NORMALS ACROSS THE ENTIRE
REGION MONDAY BEFORE WARMING SEVERAL MORE DEGREES TUESDAY.
- LIMITED TO NO RAIN CHANCES ALONG WITH THE WARM TEMPERATURES
AND INCREASING WEST WIND LEADS TO ELEVATED TO CRITICAL FIRE
CONDITIONS MUCH OF THE WEEK. TUESDAY LOOKS TO BE THE MOST
CRITICAL AS WESTERLY WIND BLOWS 20 TO 35 MPH.
DISCUSSION
ISSUED AT 223 AM MDT SUN JUN 14 2026
AREAS EAST OF THE DIVIDE WERE ABNORMALLY CHILLY YESTERDAY FOR MID-
JUNE. THE OVERALL FORECAST VERIFIED QUITE WELL, ALTHOUGH
PORTIONS OF JOHNSON AND NATRONA COUNTIES STAYED IN THE 40S
THROUGH MUCH OF THE DAY, FINALLY REACHING THE UPPER 50S BY 6PM.
THE 0.49" OF RAIN THAT WAS FORECASTED IN NORTHERN JOHNSON
COUNTY BETWEEN 12Z AND 18Z ALSO VERIFIED, WITH KBYG RECEIVING
0.47". THE COLD FRONT CONTINUES ITS EASTWARD PROGRESSION,
FINALLY REACHING THE UT BORDER AROUND 06Z SUNDAY. GUSTS OF 25 TO
40 MPH WILL CONTINUE ACROSS PORTIONS OF SWEETWATER AND SOUTHERN
SUBLETTE COUNTIES FOR THE NEXT FEW HOURS, SUBSIDING THROUGH
15Z.
SEASONAL TO SLIGHTLY BELOW NORMAL TEMPERATURES WILL BE IN PLACE
ACROSS THE CWA TODAY WITH HIGHS IN THE UPPER 60S INTO THE 70S.
CONDITIONS WILL BE DRY, EXCEPT FOR VERY ISOLATED SHOWERS POSSIBLE
FROM THE SOUTHERN END OF THE ABSAROKAS TO THE SOUTHERN END OF THE
BIGHORNS THROUGHOUT THE DAY. WINDS WILL BE LIGHT AS WELL, WITH GUSTS
UP TO 20 MPH OCCURRING OVER SOUTHERN PORTIONS OF THE
FORECAST AREA.
A WARMING TREND WILL BEGIN MONDAY, WITH A NORTHWEST FLOW PATTERN
ALOFT IN PLACE. CONDITIONS WILL BE DRY, WITH HIGHS NEAR 80 DEGREES
RETURNING ACROSS THE CWA. ANY CHANCE FOR A SHOWER COULD OCCUR OVER
THE NORTHERN HALF OF THE BIGHORNS AND NORTHERN JOHNSON COUNTY LATE
IN THE AFTERNOON. HEIGHTS WILL RISE TUESDAY WITHIN THIS NORTHWEST
FLOW PATTERN, LEADING TO HIGH TEMPERATURES IN THE UPPER 80S TO LOWER
90S IN THE WIND RIVER AND BIGHORN BASINS AND PORTIONS OF NATRONA
COUNTY. TEMPERATURES WILL BE SLIGHTLY COOLER EAST OF THE DIVIDE
WEDNESDAY, AS A COLD FRONT CLIPS NORTHERN PORTIONS OF THE
STATE. THIS LOOKS TO BE THE BEST CHANCES FOR ANY PRECIPITATION
NEXT WEEK AS WELL, AS MUCH OF THE WEEK LOOKS TO STAY DRY. FIRE
WEATHER CONDITIONS WILL BE ELEVATED TO CRITICAL THROUGH THE WEEK
AS WELL, WITH TUESDAY LOOKING TO BE THE MOST CRITICAL. FUELS
ARE CURRENTLY CRITICAL FOR PORTIONS OF NATRONA COUNTY AND A FIRE
WEATHER WATCH LOOKS LIKELY HERE.
AVIATION /06Z TAFS THROUGH 06Z MONDAY/
ISSUED AT 945 PM MDT SAT JUN 13 2026
WEST OF THE DIVIDE...KBPI/KJAC/KPNA/KRKS TERMINALS
CONDITIONS REMAIN VFR THROUGH THE FORECAST PERIOD WITH LITTLE
CLOUD COVER EXPECTED. GUSTY NORTHEAST WIND 20 TO 30KT AT KRKS
DECREASES BETWEEN 09Z-12Z/SUNDAY LEAVING AN 8-14KT THROUGH EARLY
SUNDAY AFTERNOON. WEST TO NORTHWEST WIND 7-11KT RETURNS TO ALL
TERMINALS BETWEEN 19Z-22Z/SUNDAY. ANOTHER SURGE OF NORTHEAST
WIND 10-15KT PUSHES THROUGH KRKS AROUND 00Z/MONDAY.
EAST OF THE DIVIDE...KCOD/KCPR/KLND/KRIW/KWRL TERMINALS
BKN-OVC CEILINGS AT 040-070AGL PREVAIL OVERNIGHT AS FAVORABLE
NORTHERLY FLOW AND MID-LEVEL MOISTURE REMAIN ACROSS THE REGION.
VFR CONDITIONS SHOULD PREVAIL, ALTHOUGH THERE IS A 15 PERCENT
CHANCE OF MVFR IN THE UPSLOPE-FAVORED BASINS, MAINLY AT KLND. A
SECONDARY SHORTWAVE SWEEPS NORTHWEST-TO-SOUTHEAST THROUGH THE
REGION DURING THE MIDDAY HOURS SUNDAY ALLOWING FOR THE CLOUD
COVER TO SCATTER OUT. NORTH TO NORTHEAST SURFACE WIND 7-11KTS
WILL BE COMMON. MOUNTAIN TOPS FREQUENTLY OBSCURED THROUGH
18Z/SUNDAY.
PLEASE SEE THE AVIATION WEATHER CENTER AND/OR CWSU ZDV AND ZLC FOR
THE LATEST INFORMATION ON SMOKE, ICING, AND TURBULENCE FORECASTS.
RIW WATCHES/WARNINGS/ADVISORIES
NONE.
DISCUSSION...LAVOIE
AVIATION...CNJ
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