117
FXUS66 KMTR 261325
AFDMTR
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN FRANCISCO CA
525 AM PST MON JAN 26 2026
..NEW AVIATION
KEY MESSAGES
UPDATED AT 325 AM PST MON JAN 26 2026
- WEAK OFFSHORE WINDS CONTINUE THROUGH THE MIDDLE OF THE WEEK
- SLIGHT CHANCE OF RAIN TUESDAY EVENING INTO WEDNESDAY MORNING.
AMOUNTS GENERALLY LESS THAN 0.1" AND FOCUSED IN THE NORTH BAY.
- SLIGHT CHANCE FOR RAIN NEXT WEEKEND CONTINUES TRENDING DRIER
SHORT TERM
ISSUED AT 325 AM PST MON JAN 26 2026
(TODAY AND TONIGHT)
PROGRESSIVE SHORT WAVE TROUGHING TODAY WILL GIVE WAY TO PROGRESSIVE
RIDGING TONIGHT WITH THE RIDGE AXIS SHIFTING EAST OF OUR AREA BY
EARLY TUESDAY MORNING. PATCHY FOG IS EXPECTED TO DEVELOP OVERNIGHT
IN PORTIONS OF THE NORTH BAY, EAST BAY AND SOUTH BAY WITH COVERAGE
OR DURATION NOT EXPECTED TO NECESSITATE AN ADVISORY ATTM. SOUTHERLY
BOUNDARY LAYER WINDS COMBINED WITH WEAK OFFSHORE SURFACE WINDS WILL
HELP LIFT TEMPERATURES A FEW DEGREES ACROSS THE INTERIOR FROM
SUNDAYS HIGHS, REMAINING RIGHT AROUND THE SAME ALONG THE COAST.
CLOUDY SKIES THIS MORNING WILL GIVE WAY TO A MIX OF SUN AND CLOUDS
THIS AFTERNOON, ESPECIALLY INLAND FURTHER HELPING THE MODEST
TEMPERATURE INCREASES.
LONG TERM
ISSUED AT 325 AM PST MON JAN 26 2026
(TUESDAY THROUGH SUNDAY)
EXTENDED FORECAST REMAINS ON TRACK WITH RAIN CHANCES INCREASING
TUESDAY EVENING, CONTINUING THROUGH WEDNESDAY MORNING. HIRES
HRRR/RRFS FOCUS PRIMARILY ON THE NORTH BAY STRUGGLING TO REACH 0.10"
WITH NBM POPS POSSIBLY A LITTLE OVERDONE WITH CHANCES TO THE SOUTH
AS THE BEST LIFT ASSOCIATED WITH THE SURFACE BOUNDARY CONTINUING TO
SHIFT NORTH OF OUR AREA. DRIER CONDITIONS WILL PERSIST FOR THE
REMAINDER OF THE WEEK WITH PERSISTENT RIDGING WHILE THE SIGNAL FOR
ANOTHER ROUND OF SCATTERED LIGHT BENEFICIAL RAIN NEXT WEEKEND
BEGINNING TO FADE WHILE TEMPERATURES TREND WARMER FOR THE WEEKEND,
ESPECIALLY ACROSS THE CENTRAL COAST.
AVIATION
(12Z TAFS)
ISSUED AT 420 AM PST MON JAN 26 2026
VFR THROUGH THE TAF PERIOD FOR ALL SITES BUT STS AND LVK WHICH
WILL SEE SPOTTY FOG INTO THE MID MORNING. HIGH CLOUDS CONTINUE TO
MOVE THROUGH THE REGION, BUT THIN INTO THE AFTERNOON. WINDS WILL
MOSTLY SAY LIGHT THROUGH THE TAF PERIOD WITH WIND DIRECTIONS BEING
DETERMINED BY MOSTLY LOCALIZED EFFECTS.
VICINITY OF SFO...VFR THROUGH THE TAF PERIOD. EXPECT MOSTLY LIGHT
TO MODERATE NORTHEAST WINDS THROUGH THE AFTERNOON. WINDS BECOME
LIGHTER INTO THE EVENING NIGHT, BEFORE MODERATE SOUTHEAST WINDS
BUILD EARLY TUESDAY.
SFO BRIDGE APPROACH...SIMILAR TO SFO.
MONTEREY BAY TERMINALS...VFR THROUGH THE TAF PERIOD. LIGHT WINDS
AFFECT MRY THROUGH THE FORECAST. WINDS STAY EAST TO SOUTHEAST
THROUGH THE MORNING AND INTO THE AFTERNOON, WITH MORE MODERATE
WINDS POSSIBLE AT SNS. LIGHTER WEST TO NORTHWEST WINDS BUILD IN
FROM THE BAY IN THE MID TO LATE AFTERNOON, BUT WINDS LOOK TO TURN
EASTERLY IN THE EARLY NIGHT. EAST-SOUTHEAST WINDS BUILD IN THE
LATE NIGHT AT SNS, BECOMING MORE MODERATE.
MARINE
(TODAY THROUGH SATURDAY)
ISSUED AT 325 AM PST MON JAN 26 2026
MOSTLY LIGHT WINDS CONTINUE TO AFFECT THE WATERS WITH MORE
MODERATE TO BREEZY WINDS NORTH OF POINT REYES. 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. ADDITIONALLY, A WEAK PASSING
STORM SYSTEM WILL BRING LIGHT RAIN TO THE COASTAL WATERS EARLY
TUESDAY MORNING THROUGH WEDNESDAY MORNING.
MTR WATCHES/WARNINGS/ADVISORIES
CA...NONE.
PZ...NONE.
SHORT TERM...JM
LONG TERM....JM
AVIATION...MURDOCK
MARINE...MURDOCK
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