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FXUS65 KREV 300927
AFDREV
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE RENO NV
227 AM PDT SAT MAY 30 2026
KEY MESSAGES
* FOGGY CONDITIONS MAY REDUCE VISIBILITIES ALONG ROADWAYS IN SIERRA
VALLEYS THIS MORNING.
* A SLIGHT CHANCE OF SHOWERS AND ISOLATED THUNDERSTORMS WILL RESIDE
ACROSS FAR NE CALIFORNIA AND NW NEVADA THIS AFTERNOON.
* ABOVE NORMAL TEMPERATURES PREVAIL NEXT WEEK WITH COOLER,
UNSETTLED WEATHER POSSIBLE NEXT WEEKEND.
DISCUSSION
CLEARING SKIES AND LIGHT SURFACE WINDS SHOULD ENCOURAGE FOG
FORMATION EARLY THIS MORNING ACROSS N SIERRA VALLEYS -- ESPECIALLY
AFTER A FEW DAYS OF HUMID, SHOWERY WEATHER. FOG IS MOST LIKELY TO
DEVELOP IN THE MARTIS AND SIERRA VALLEYS, WITH A LESSER LIKELIHOOD
IN/NEAR THE TAHOE BASIN. EXPECT REDUCED VISIBILITIES IN AREAS WHERE
FOG IS PRESENT, INCLUDING THE STRETCH OF I-80 NEAR TRUCKEE.
SHOWER AND STORM POTENTIAL HAS TRENDED DOWNWARD TODAY, BUT THERE
DOES SEEM TO BE ENOUGH INSTABILITY TO SUPPORT LOW PROBABILITIES (10-
20%) OF ISOLATED SHOWERS AND THUNDERSTORMS ACROSS FAR NE CALIFORNIA
INTO NW NEVADA THIS AFTERNOON. SHOWER/STORM CHANCES DECREASE FURTHER
SUNDAY AFTERNOON, ALTHOUGH A PACNW LOW WILL MAINTAIN VERY LOW 5-10%
ODDS ALONG THE HIGHER SIERRA TERRAIN.
TEMPERATURES WARM TO NEAR AVERAGE THIS WEEKEND WITH DAYTIME HIGHS IN
THE 60S AND 70S. FURTHER WARMING IS EXPECTED NEXT WEEK, YIELDING
WELL ABOVE NORMAL TEMPERATURES BY THE MIDDLE OF THE WEEK. THE
TUESDAY THROUGH THURSDAY TIMEFRAME LOOKS TO BE THE WARMEST WITH
HIGHS FLIRTING WITH 80F AND 90F FOR SIERRA COMMUNITIES AND LOWER NE
CA/W NV VALLEYS, RESPECTIVELY. ENSEMBLES ARE HINTING AT A PATTERN
CHANGE LATE NEXT WEEK INTO NEXT WEEKEND, WHICH MAY USHER IN COOLER
TEMPERATURES, GUSTY WINDS, AND INCREASED SHOWER/STORM CHANCES.
HOWEVER, CONFIDENCE IS LOW BEING ABOUT A WEEK OUT.
-SALAS
AVIATION
FOG AND IFR/LIFR CONDITIONS AT KTRK WILL BE THE PRIMARY CONCERN
THROUGH THE MORNING, PARTICULARLY BETWEEN 10Z AND 16Z. SHALLOW
FOG/BR MAY BRIEFLY DEVELOP AT KTVL EARLY THIS MORNING, BUT
CONFIDENCE IS LOWER. SHOWER AND THUNDERSTORM ACTIVITY WILL REMAIN
NORTH OF MAIN TERMINALS (15-20% ODDS AT KSVE), BUT INCREASING LOW
CLOUDS MAY RESULT IN MOUNTAINTOP OBSCURATION THIS AFTERNOON.
-SALAS
REV WATCHES/WARNINGS/ADVISORIES
NV...NONE.
CA...NONE.
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