024
FXUS65 KREV 262005
AFDREV
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE RENO NV
1205 PM PST MON JAN 26 2026
KEY MESSAGES
* A SLOW, GRADUAL WARMING TREND INTO THIS WEEKEND WILL BRING ABOVE
AVERAGE TEMPERATURES BY SATURDAY.
* A WEAK WEATHER SYSTEM MAY BRING CHANCES FOR LIGHT SNOW SHOWERS,
MAINLY ALONG THE SIERRA CREST TUESDAY NIGHT INTO WEDNESDAY
MORNING.
* DRY CONDITIONS CONTINUE WEDNESDAY ONWARD WITH HIGH PRESSURE
RETURNING TO THE AREA.
DISCUSSION
KEY MESSAGE 1: HIGH PRESSURE WILL MOVE IN LATE THIS WEEK, INCREASING
TEMPERATURES NEAR 60 IN LOWER VALLEYS AND UPWARDS OF 55 IN SIERRA
COMMUNITIES BY SATURDAY. THIS WARM UP WILL BE AROUND 10 DEGREES
ABOVE NORMAL FOR THIS TIME OF YEAR, SO THIS WARM UP WILL BE
NOTICEABLE. MORNINGS WILL STILL BE PRETTY CHILLY, THOUGH. MORNING
TEMPS THIS WEEKEND WILL BE AROUND 30-35 FOR LOWER VALLEYS AND
25-30 FOR SIERRA VALLEYS.
KEY MESSAGE 2: A SHORTWAVE TROUGH WILL MOVE THROUGH TUESDAY NIGHT
INTO WEDNESDAY MORNING AND BRING A QUICK ROUND OF SNOW SHOWERS TO
THE SIERRA AND NE CA. PEAK SNOW PROBABILITIES EARLY WEDNESDAY
MORNING WILL BE AROUND 40-50% FOR SURPRISE VALLEY, PLUMAS COUNTY,
AND WESTERN LASSEN COUNTY, DOWN TO THE WESTERN SLOPES OF TAHOE.
LESSER CHANCES OF UP TO 30% WILL BE SEEN FOR ALPINE COUNTY UP
THROUGH TAHOE AND THROUGH THE EASTERN PORTIONS OF LASSEN COUNTY.
MAX QPF VALUES WILL RANGE FROM 0.10-0.15" FOR THIS MINI STORM AND
SINCE SNOW LEVELS ARE GOING TO HANG AROUND 5000 FEET OR BELOW,
SNOW AMOUNTS IN THE SIERRA LOOK TO BE AROUND A TRACE FROM ALPINE
COUNTY NORTHWARD, WITH ONLY 1-2 INCHES POSSIBLE IN THE HIGHEST
TERRAIN IN WESTERN LASSEN. WITH SNOW LEVELS THAT LOW, BE AWARE
THAT THE MORNING COMMUTE WEDNESDAY MORNING MAY BE SLICK AND ICY
ACROSS SIERRA PASSES, ESPECIALLY DONNER. SOUTHWEST WINDS WON'T BE
TOO MUCH OF AN ISSUE FOR THIS SYSTEM, ONLY SIERRA RIDGES MAY GET
UP TO 60-70 MPH WEDNESDAY MORNING. ONCE THIS SYSTEM MOVES OUT BY
MIDDAY WEDNESDAY, THE CLOUDS WILL DISSIPATE AND THE SUN WILL POKE
THROUGH ONCE AGAIN.
KEY MESSAGE 3: WEDNESDAY ONWARD, WE'LL SEE HIGH PRESSURE MOVE IN
AGAIN AND KEEP US DRY AND SUNNY THROUGH THIS WEEKEND. VALLEY
INVERSIONS MAY SET BACK UP TOWARDS THE END OF THE WEEK AGAIN WITH
LIGHT WINDS EXPECTED WEDNESDAY ONWARD. IF SENSITIVE TO AIR
QUALITY, I'D MONITOR THAT LATER THIS WEEK AS SOME VALLEYS MAY
BUILD UP AND TRAP SOME POLLUTANTS. OUR NEXT CHANCE FOR PRECIP
LOOKS TO BE AROUND THE 1ST OR 2ND OF FEBRUARY, BUT CONFIDENCE
REMAINS LOW THIS FAR OUT.
-JUSTIN
AVIATION
VFR CONDITIONS AND LIGHT WINDS ARE EXPECTED FOR ALL AREA TAF
SITES TODAY. LIGHT SNOW SHOWER CHANCES FOR NE CA AND THE SIERRA ON
TUESDAY INTO WEDNESDAY WITH INCREASED RIDGE WIND GUSTS UP TO
AROUND 60 KTS. WE WILL LIKELY SEE SOME LLWS AND TURBULENCE TUESDAY
NIGHT THROUGH WEDNESDAY MORNING WITH THIS SYSTEM AS WELL.
-078/JUSTIN
REV WATCHES/WARNINGS/ADVISORIES
NV...NONE.
CA...NONE.
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