173
FXUS66 KMTR 261128
AFDMTR
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN FRANCISCO CA
328 AM PST MON JAN 26 2026
..NEW SHORT TERM, LONG TERM, MARINE
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
(06Z TAFS)
ISSUED AT 923 PM PST SUN JAN 25 2026
FOR THE 06Z TAFS FOG ARRIVED A LITTLE EARLIER FOR KSTS THAN
PREVIOUSLY FORECAST. WILL KEEP MVFR WITH IFR DEVELOPING LATER FOR
KSTS. OTHERWISE, ELSEWHERE MAINLY VFR THROUGH THE NIGHT AND EARLY
MONDAY. WE'LL SEE A WEAK BOUNDARY APPROACH LATE IN THE TAF PERIOD
WHICH WILL LOWER SOME CIGS AND HAVE WINDS BECOMING MORE
SOUTHERLY.
VICINITY OF SFO...VFR WITH AN OFFSHORE FLOW.
SFO BRIDGE APPROACH...SIMILAR TO SFO.
MONTEREY BAY TERMINALS...VFR. BREEZY DRAINAGE FLOW FOR SNS MONDAY.
LOW CHC (LESS THAN 20%) OF MVFR CIGS CREEPING INTO MRY BY THE END
OF THE TAF ON MONDAY.
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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