197
FXUS65 KREV 271900
AFDREV
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE RENO NV
1200 PM PDT TUE OCT 27 2026
KEY MESSAGES
* DRY AND COOL CONDITIONS CONTINUE ACROSS THE REGION THROUGH
THURSDAY, WITH A GRADUAL COOLING TREND BEGINNING FRIDAY.
* ISOLATED SNOW SHOWERS LATE THURSDAY ALONG THE SIERRA, LINGERING
THROUGH FRIDAY.
* COOLER AND SHOWERY CONDITIONS THIS WEEKEND WITH SNOW LEVELS
ABOVE 6500 FEET.
DISCUSSION
EXPECT COOL AND DRY CONDITIONS WITH LIGHT WINDS THROUGH THURSDAY
BEFORE TWO UPPER LEVEL SYSTEMS START TO IMPACT THE AREA. LATEST
SATELLITE IMAGERY SHOWS A LOW CYCLING OUT IN THE PACIFIC,
NORTHEAST OF HAWAII. THIS LOW WILL MOVE INLAND AS THE WEEK
PROGRESSES, AND IS EXPECTED TO INTERACT WITH AN UPPER-LEVEL
TROUGH, CURRENTLY OVER BRITISH COLUMBIA, THIS WEEKEND.
SHOWER CHANCES (15-30%) LATE THURSDAY THROUGH FRIDAY WILL BE
CONFINED TO THE SIERRA CREST, AND CAN MOSTLY BE ATTRIBUTED TO THE
TROUGH FROM BC. SNOW LEVELS WILL VARY, DROPPING AS LOW AS
6000-6500' LATE THURSDAY NIGHT. HOWEVER, SNOW LEVELS WILL MOSTLY
RANGE BETWEEN 6750-7750' WITH THE HIGHEST SNOW LEVELS IN MONO
COUNTY. NEW SNOWFALL TOTALS WILL AMOUNT TO 2" OR LESS.
PRECIP CHANCES BECOME WIDESPREAD BY SATURDAY AFTERNOON, RANGING
FROM 30-65% AS THE LOW IN THE PACIFIC APPROACHES THE SOUTHERN
COAST OF CALIFORNIA. THIS SYSTEM WILL PROVIDE THE MAJORITY OF THE
MOISTURE THIS WEEKEND WHILE THE TROUGH TO OUR NORTH WILL HELP
BRING COLDER TEMPERATURES. AS SUCH, SNOW LEVELS WILL RANGE FROM
6500' IN AND AROUND THE TAHOE BASIN TO 7500' IN SOUTHERN MONO
COUNTY. SINCE THESE TWO AFOREMENTIONED SYSTEMS WILL BE
INTERACTING, THERE IS STILL PLENTY OF UNCERTAINTY IN BOTH THE
LIQUID AND SNOWFALL TOTALS THIS WEEKEND. SNOWFALL TOTALS WILL BE
CONFINED TO THE SIERRA AND RANGE ANYWHERE FROM 0-7" (25TH VS 75TH
PERCENTILE) BY EARLY MONDAY. AS FOR LIQUID, ANYWHERE FROM 0-0.75"
BY MONDAY MORNING. THAT BEING SAID, THERE'S A 20-50% CHANCE FOR
WETTING RAIN ACROSS W NV BY MONDAY MORNING.
TEMPERATURES WILL BE QUITE COOL THIS WEEKEND, WITH HIGHS DROPPING
INTO THE MID 50S FOR WESTERN NEVADA AND MID TO UPPER 40S FOR
SIERRA COMMUNITIES AROUND THE TAHOE BASIN. OVERNIGHT LOWS PLUNGE
BELOW FREEZING FOR SUNDAY AND MONDAY AREAWIDE.
ENSEMBLES HINT AT UPPER LEVEL RIDGING FOR MONDAY THROUGH AT LEAST
WEDNESDAY, WITH LONG-RANGE GUIDANCE BRINGING ANOTHER PERIOD OF
ACTIVE WEATHER FOR NEXT WEEKEND.
-GIRALTE
AVIATION
VFR CONDITIONS THROUGH AT LEAST THURSDAY WITH LIGHT WINDS. GUSTS
UPWARDS OF 40 KTS ALONG THE SIERRA CREST MAY PRODUCE LOCALIZED
AREAS OF LLWS THIS AFTERNOON.
-GIRALTE
REV WATCHES/WARNINGS/ADVISORIES
NV...NONE.
CA...NONE.
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