861
FXUS65 KREV 240941
AFDREV
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE RENO NV
241 AM PDT FRI APR 24 2026
KEY MESSAGES
* SHOWER AND THUNDERSTORM CHANCES INCREASE TODAY ACROSS THE
SIERRA AND SIERRA FRONT.
* SHOWERS AND THUNDERSTORMS CONTINUE THIS WEEKEND WITH MORE
PERSISTENT MOUNTAIN SNOW FOR THE TAHOE AREA AND EASTERN SIERRA
SATURDAY NIGHT INTO SUNDAY.
* SHOWERY WEATHER IS FAVORED TO CONTINUE INTO NEXT WEEK WITH DRIER
CONDITIONS POSSIBLE LATE NEXT WEEK.
DISCUSSION
A PERSISTENT WESTERN TROUGHING PATTERN WILL DELIVER SEVERAL DAYS OF
SHOWERY WEATHER BEGINNING TODAY AND LASTING INTO NEXT WEEK.
DIFFERENTIAL SURFACE HEATING ALONG THE HIGHER SIERRA TERRAIN SHOULD
YIELD ENOUGH INSTABILITY FOR SHOWER AND ISOLATED THUNDERSTORM
DEVELOPMENT (15-30% CHANCE) THIS AFTERNOON ACROSS THE EASTERN SIERRA
AND SIERRA FRONT. IMPACTS SHOULD BE MINIMAL, BUT BE CAUTIOUS OF
WET/SLICK ROADS IN THE MOUNTAINS.
THERE IS BETTER POTENTIAL FOR STEADY, MORE WIDESPREAD RAIN AND
MOUNTAIN SNOW SATURDAY INTO SUNDAY AS TWO DISTINCT AREAS OF LOW
PRESSURE APPROACH THE REGION. THE POSITIONING OF THESE LOWS FAVOR
LASSEN AND WASHOE COUNTIES, AND THE SIERRA SOUTH OF US-50 FOR BEST
SHOWER CHANCES OF 40-80% WITH LESS THAN 30% ELSEWHERE. SNOW IMPACTS
MAY ARISE IN ALPINE AND MONO COUNTY LATE SATURDAY INTO SUNDAY
MORNING WHEN THERE IS A 30-60% CHANCE OF 1" OF SNOW FOR COMMUNITIES
ALONG US-395 WITH SIMILAR ODDS OF 6" OR MORE ALONG MOUNTAIN RIDGES.
ADDITIONAL THUNDERSTORMS ARE ALSO ON THE TABLE SATURDAY AFTERNOON,
ESPECIALLY ACROSS LASSEN AND N WASHOE COUNTIES (15-20% ODDS).
SUNDAY INTO NEXT WEEK OFFERS ADDITIONAL SHOWER AND THUNDERSTORM
CHANCES WITH MINIMAL CHANGE TO OUR GOVERNING WEATHER PATTERN. DRIER
CONDITIONS MAY RETURN TOWARDS THE END OF NEXT WEEK AS GUIDANCE
SUGGESTS HIGH PRESSURE DEVELOPING ACROSS THE WESTERN STATES.
-SALAS
AVIATION
WIDESPREAD VFR CONDITIONS -- EXCEPT KTRK WHERE PERIODS OF FZFG/IFR
CONTINUE THROUGH MID-MORNING -- PREVAIL THROUGH THE MORNING BEFORE
RAIN AND MOUNTAIN SNOW SHOWERS WITH ISOLATED LIGHTNING DEVELOP IN
THE AFTERNOON. KTRK AND KTVL ARE MOST LIKELY (10-30% CHANCE) TO BE
IMPACTED WITH BRIEFLY REDUCED CIGS/VIS, MOUNTAIN OBSCURATION, AND
ISOLATED LIGHTNING ACCOMPANYING STRONGER SHOWERS AND THUNDERSTORMS.
SHOWER ODDS AND COVERAGE BOTH INCREASE ON SATURDAY, EXPANDING
DEGRADED FLIGHT CONDITIONS INTO WESTERN NEVADA.
-SALAS
REV WATCHES/WARNINGS/ADVISORIES
NV...NONE.
CA...NONE.
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