855
FXUS65 KREV 050738
AFDREV
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE RENO NV
1238 AM PDT FRI SEP 5 2025
KEY MESSAGES
* AFTERNOON THUNDERSTORMS WITH LOCALIZED FLASH FLOODING POTENTIAL
REMAIN THROUGH TODAY BEFORE CHANCES DIMINISH FOR THE WEEKEND.
* SMOKE FROM NEARBY WILDFIRES WILL CONTINUE TO FILTER INTO THE
REGION, PRODUCING HAZY SKIES AND AIR QUALITY IMPACTS.
* HINTS OF FALL MAKE AN APPEARANCE NEXT WEEK WITH MUCH COOLER
TEMPERATURES, BREEZY WINDS, AND INCREASED SHOWER AND STORM
CHANCES.
DISCUSSION
AN UPPER LEVEL TROUGH OFF THE PACIFIC NORTHWEST COAST WILL BRING
ABOUT NOTABLE CHANGES IN THE WEATHER THROUGH THE WEEKEND INTO NEXT
WEEK. IF YOU'VE BEEN PATIENTLY WAITING FOR THAT SWEATER WEATHER,
THEN NEXT WEEK IS LOOKING LIKE YOUR BEST BET. LET'S TAKE A LOOK AT
TODAY THROUGH THE WEEKEND BEFORE WE GET TOO EXCITED ABOUT THE
UPCOMING FALL-LIKE CONDITIONS NEXT WEEK.
LOOKS LIKE WE WILL HAVE ONE LAST DAY OF THUNDERSTORMS WITH THE BEST
POTENTIAL FOR SHOWERS AND STORMS EAST OF HIGHWAY 95, SOUTH OF
HIGHWAY 50 AND ALSO ALONG THE NV/OR BORDER. LOCALIZED FLOODING STILL
REMAINS A REAL POSSIBILITY WITH SUFFICIENT MOISTURE REMAINING ACROSS
THE REGION. SMOKE AND HAZE, UNFORTUNATELY, CONTINUE TO BE A CONCERN
GOING INTO THE END OF THE WORK WEEK. NEARBY WILDFIRES, MAINLY THE
GARNET FIRE, CONTINUE TO PRODUCE SMOKE THAT IS IMPACTING AIR QUALITY
AND VISIBILITY FOR PORTIONS OF THE EASTERN SIERRA EACH DAY. KEEP AN
EYE ON THE AIR QUALITY AT FIRE.AIRNOW.GOV
AS PREVIOUSLY MENTIONED, AN UPPER LEVEL TROUGH WILL SLOWLY MAKE ITS
TREK TOWARD THE SIERRA AND WESTERN NEVADA THIS WEEKEND. IT'S ARRIVAL
WILL ALLOW FOR AN UPTICK IN MID SLOPE AND RIDGE LEVEL WINDS,
ESPECIALLY BY SATURDAY AND SUNDAY. SURFACE WIND GUSTS MAY PICK UP
EACH AFTERNOON, BUT PEAK WIND GUSTS WILL BE MARGINAL (AROUND 30
MPH). THE STRONGEST WINDS MAY ARRIVE ON MONDAY WITH GUSTS 40 MPH
POSSIBLE (35% CHANCE MAMMOTH LAKES, 45% CHANCE RENO). THE INCREASE
IN WINDS WILL ONLY BE A MARGINAL FOR FIRE WEATHER, SINCE IT DOES
APPEAR THAT HUMIDITY VALUES WILL COME UP ENOUGH TO MITIGATE THOSE
CONCERNS. AS THE TROUGH PASSES BY, TEMPERATURES WILL DROP BELOW
AVERAGE REGION-WIDE WITH POTENTIAL FOR SOME OVERNIGHT FREEZING
TEMPERATURES FOR THE HIGH SIERRA AND SIERRA COMMUNITIES MIDWEEK.
WITH THE DROP IN TEMPERATURES AND THE RETURN OF SHOWERS, WE'RE
SEEING HINTS FOR SOME HIGH ELEVATION FLURRIES. THERE ARE 15-30%
CHANCES FOR A TRACE OF SNOW FOR THE HIGH SIERRA, INCLUDING MAMMOTH
MOUNTAIN, SONORA PASS, TIOGA PASS FROM WEDNESDAY PM INTO THURSDAY.
-EDAN
AVIATION
KTRK WILL SEE ANOTHER ROUND OF FOG THIS MORNING WITH IT BREAKING UP
AROUND 15-17Z.
AFTERNOON SHOWERS AND THUNDERSTORMS WILL FORM AGAIN BETWEEN 19Z-01Z.
KMMH/KNFL/KLOL HAVE A 15% CHANCE OF A STORM, WHILE
KRNO/KCXP/KMEV/KTRK/KTVL WILL BE AT 5% CHANCES. DRIER CONDITIONS
WILL LIMIT STORM DEVELOPMENT OVER THE WEEKEND.
SMOKE FROM NEARBY WILDFIRES WILL CONTINUE TO IMPACT SLANTWISE
VISIBILITIES EACH MORNING AND EVENING INTO THE WEEKEND.
-EDAN
REV WATCHES/WARNINGS/ADVISORIES
NV...NONE.
CA...NONE.
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