839
FXUS66 KMTR 262346
AFDMTR
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN FRANCISCO CA
346 PM PST MON JAN 26 2026
..NEW AVIATION, MARINE
KEY MESSAGES
UPDATED AT 136 PM PST MON JAN 26 2026
- CLEAR SKIES AND WEAK OFFSHORE WINDS PERSIST THROUGH TUESDAY
- MOIST, SOUTHERLY FLOW INCREASES TUESDAY NIGHT AHEAD OF SLIGHT
RAIN CHANCES NORTH BAY AND SF. AMOUNTS VERY LIGHT B/W 0.01" AND
0.2".
- DRYING OUT WEDNESDAY MORNING AND REMAINING SO THROUGH THE REST
OF THE WEEK. NEXT CHANCE OF RAIN WILL BE SUNDAY, BUT CONFIDENCE
IS LOW AT THIS POINT.
SHORT TERM
ISSUED AT 136 PM PST MON JAN 26 2026
(THIS EVENING THROUGH TUESDAY)
MOSTLY CLEAR SKIES ACROSS THE BOARD TODAY UNDER A BUILDING RIDGE
OF HIGH PRESSURE. MANY LOCATIONS RUNNING ABOUT 4-6 DEGREES WARMER
THAN 24 HOURS AGO, LARGELY IN PART TO THE LACK OF CLOUD COVER
TODAY. WINDS REMAIN LIGHT AND VARIABLE WITH THE EXCEPTION OF
BREEZY OFFSHORE WINDS IN THE VICINITY OF THE DELTA. A WEAKENING
SHORTWAVE TROUGH APPROACHES THE WEST COAST LATE TUESDAY, BRINGING
INCREASED CLOUDINESS AHEAD OF RAIN CHANCES OVERNIGHT.
LONG TERM
ISSUED AT 136 PM PST MON JAN 26 2026
(TUESDAY NIGHT THROUGH NEXT SUNDAY)
RAIN CHANCES OVERNIGHT TUESDAY DO EXIST, BUT VERY LIMITED ON WHO
WILL ACTUALLY GET MEASURABLE PRECIP. WITH THE SYSTEM WEAKENING
AND LIFTING TOWARD THE NE, MOST RAIN WILL LIKELY ONLY FALL IN THE
NORTH BAY (0.05" TO 0.25"), WITH LIGHTER OR EVEN TRACE AMOUNTS
ACROSS THE SF PENINSULA AND IMMEDIATE SF BAY REGION. INTERIOR EAST
BAY, SOUTH BAY, AND AREAS SOUTH OF WATSONVILLE WILL LIKELY ONLY
SEE DRIZZLE AT BEST. THIS ALL COMES TO AN END BY THE MIDDLE OF
WEDNESDAY MORNING, THEN RIDGING BUILDS BACK IN ALOFT PROMOTING DRY
WEATHER AND TEMPS NEAR TO SLIGHTLY ABOVE AVERAGE. THE NEXT
MENTION OF RAIN LOOKS TO BE AROUND THE SUNDAY TIMEFRAME, BUT
UNCERTAINTY IS STILL HIGH AT THIS POINT.
AVIATION
(00Z TAFS)
ISSUED AT 337 PM PST MON JAN 26 2026
VFR FOR MOST TERMINALS WITH KLVK BEING THE EXCEPTION AT MVFR TO
DUE ONGOING HAZE. VFR CONDITIONS AGAIN TONIGHT WITH DECREASING
OFFSHORE FLOW. PATCHY FOG WILL ONCE AGAIN IMPACT KSTS, KLVK, AND
POSSIBLY KAPC (20-30%). TOWARD THE END OF THE TAF PERIOD CIGS WILL
LOWER AND RAIN WILL LURK TO THE WEST WITH A FRONT.
VICINITY OF SFO...VFR. EASTERLY THROUGH TONIGHT THEN GRADUALLY
SHIFTING S TO SW TUESDAY. TAIL END OF 30 HR TAF LOWERING CIGS AND
SOME VCSH.
SFO BRIDGE APPROACH...SLANTWISE HAZE ISSUES POSSIBLE THIS
AFTERNOON.
MONTEREY BAY TERMINALS...VFR
MARINE
(TONIGHT THROUGH NEXT SATURDAY)
ISSUED AT 337 PM PST MON JAN 26 2026
SOUTHERLY FLOW WILL PREVAIL OVER THE COASTAL WATERS AS A WEAK COLD
FRONT APPROACHES FROM THE WEST TONIGHT THROUGH TUESDAY. WINDS WILL
BE MODERATE TO BREEZY NORTH OF POINT REYES WITH LOCALLY HAZARDOUS
CONDITIONS. WINDS DIMINISH ON WEDNESDAY AND SWITCH TO NORTHERLY
THAT NIGHT. MODERATE SEAS WILL PREVAIL THROUGH TUESDAY. CONDITIONS
DETERIORATE WEDNESDAY AS SEAS BUILD TO BECOME ROUGH TO VERY
ROUGH. THE PASSING COLD FRONT WILL BRING LIGHT RAIN TO THE
COASTAL WATERS EARLY TUESDAY MORNING THROUGH WEDNESDAY MORNING.
MTR WATCHES/WARNINGS/ADVISORIES
CA...NONE.
PZ...SMALL CRAFT ADVISORY FROM 3 AM TO 9 PM PST TUESDAY FOR PT ARENA
TO PT REYES 0-10 NM.
SMALL CRAFT ADVISORY FROM 9 PM THIS EVENING TO 9 PM PST TUESDAY
FOR PT ARENA TO PT REYES 10-60 NM.
SHORT TERM...BEHRINGER
LONG TERM....BEHRINGER
AVIATION...RGASS
MARINE...RGASS
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