121
FXUS66 KMTR 242328
AFDMTR
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN FRANCISCO CA
428 PM PDT SUN MAY 24 2026
..NEW AVIATION, MARINE
KEY MESSAGES
ISSUED AT 1107 AM PDT SUN MAY 24 2026
- COOL TEMPERATURES THROUGH MEMORIAL DAY WEEKEND AND INTO THE
WORK WEEK
- BREEZY, DRIZZLY, AND COOL TUESDAY AHEAD OF WARMING AND DRYING
CONDITIONS FOR THE REST OF THE FORECAST.
SHORT TERM
ISSUED AT 1107 AM PDT SUN MAY 24 2026
(THIS AFTERNOON THROUGH MONDAY)
A STRONG MARINE LAYER AND GOOD ONSHORE FLOW LEAD TO ANOTHER MORNING
OF CLOUDY CONDITIONS FOR MOST OF THE AREA. THE INFLUENCE OF A LARGE
EDDY OFF THE COAST OF SONOMA CO MAY COMPLICATE CLEARING TIMES,
OTHERWISE A SIMILAR SET UP AS YESTERDAY.
HIGHS TODAY WILL RANGE FROM THE 50S ALONG THE COAST, 60S FOR
AREAS MORE INLAND, THE LOW TO 70S FOR THE MORE INTERIOR AREAS, AND
ONLY A FEW SPOTS IN THE FAR INTERIOR BREAKING 80 DEGREES TODAY.
THE DEEP AND EXPANDED MARINE LAYER CONTINUES TO KEEP HUMIDITIES HIGH
FOR MUCH OF THE AREA. THIS WILL REALLY COME INTO PLAY OVERNIGHT,
KEEPING MOST OF THE OVERNIGHT LOWS IN THE 50S AND UPPER 40S, WITH
ONLY THE FAR INTERIOR FALLING INTO THE MID 40S.
THE MARINE LAYER LOOKS TO DEEPEN SLIGHTLY INTO THE NIGHT AND WILL
CALL FOR A STRONGER INLAND OVERNIGHT AND INTO MEMORIAL DAY, LEADING
TO WIDESPREAD CLOUD COVER AND FAIR CHANCES FOR DRIZZLE. THIS WILL
ALSO CAUSE SLOWER CLEARING FOR THE INTERIOR, AND THE POTENTIAL FOR
LITTLE TO NO CLEARING ALONG THE COAST. EXPECT COOL COASTAL
CONDITIONS UNDER CLOUDY SKIES WITH HIGHS IN THE 50S. THEN THE AREAS
SLIGHTLY INLAND WILL HOVER AROUND THE MID TO LOWER 60S, AND THE FAR
INTERIOR WILL BE IN THE 70S WITH POSSIBLY ONE OR TWO SPOTS BREAKING
80 DEGREES.
LONG TERM
ISSUED AT 1107 AM PDT SUN MAY 24 2026
(MONDAY NIGHT THROUGH NEXT SATURDAY)
A COLD FRONT WILL PASS THROUGH THE AREA EARLY TUESDAY WITH A LOW
PRESSURE FOLLOWING CLOSE BEHIND. THIS WILL CAUSE MOST OF THE REGION
TO SEE THE COOLEST HIGH TEMPERATURES OF THE FORECAST. THE RUSH OF
EVEN COOLER AIR MEETING WITH THE ALREADY MOIST ENVIRONMENT OF THE
MARINE LAYER WILL CAUSE GOOD CHANCES FOR DRIZZLE ACROSS MUCH OF THE
BAY AREA AND CENTRAL COAST. WINDS WILL BE BREEZY AND GUSTY ACROSS
MUCH OF THE CWA DURING THIS PATTERN CHANGE, WITH THE HIGHER
ELEVATIONS AND FAVORED GAPS AND PASSES SEEING CHANCES FOR GUSTS
PEAKING AROUND 45 MPH. THE NATIONAL BLEND OF MODELS SHOWS THE FRONT
EXITING THE NORTH BAY EARLY ENOUGH IN DAY AND NORTHERLY DRY WINDS
AROUND THE LOW FOR SOME SLIGHT AND ISOLATED WARMING COMPARED TO
PREVIOUS DAYS, WHILE THE REST OF THE REGION REMAINS COOL.
FROM THERE, THE MODELS ARE IN FAIR AGREEMENT OVER ANOTHER WARMING
AND DRYING TREND AS A MODEST OFFSHORE FLOW DEVELOPS AS THE LOW
TRAVELS TO THE EAST. TEMPERATURES SEE A NOTABLE REBOUND FOR
WEDNESDAY AS SKIES REMAIN ON THE CLEARER SIDE, WITH TEMPERATURES
STEADILY WARMING INTO THE NEXT WEEKEND.
AVIATION
(00Z TAFS)
ISSUED AT 414 PM PDT SUN MAY 24 2026
THE LAST OF MVFR CIGS LIFTED BY MID-AFTERNOON WITH VFR EXPECTED
THROUGH THE REMAINDER OF THE AFTERNOON AND EARLY EVENING. MVFR
GIGS WILL RETURN AFTER SUNSET WITH A ROBUST MARINE LAYER AND
STEADY ONSHORE FLOW. THE STRATUS SHOULD LIFT WITH SIMILAR TIMING
ON MONDAY, THAT WE SAW THIS AFTERNOON.
VICINITY OF SFO...EXPECT MVFR CIGS TO DEVELOP IN THE HOURS
SURROUNDING MIDNIGHT TONIGHT AND PERSIST THROUGH THE MORNING WITH
SIGNS OF LIFTING TO VFR AROUND NOON MONDAY. STEADY ONSHORE FLOW
THROUGH THE TAF PERIOD WITH GUSTY WINDS DEVELOPING INTO MONDAY
EVENING OUT AHEAD OF AN APPROACHING COLD FRONT.
SFO BRIDGE APPROACH...SIMILAR AS SFO.
MONTEREY BAY TERMINALS...VFR UNTIL MVFR CIGS DEVELOP AFTER SUNSET
WITH SIMILAR CLEARING TIMES MONDAY AFTERNOON THAT WE SAW SUNDAY
AFTERNOON. STEADY ONSHORE FLOW WITH AN APPROACHING COLD FRONT
MONDAY AFTERNOON WILL RESULT IN BREEZY WESTERLY WINDS MONDAY
AFTERNOON.
MARINE
(TONIGHT THROUGH NEXT FRIDAY)
ISSUED AT 414 PM PDT SUN MAY 24 2026
LIGHT SOUTHWEST TO WEST WINDS STRENGTHEN IN TO GUSTY NORTHWEST
WINDS BEGINNING TUESDAY. STRONG NORTHWESTERLY WINDS WILL RESULT IN
BUILDING ROUGH SEAS FOR THE SECOND HALF OF THIS WEEK.
MTR WATCHES/WARNINGS/ADVISORIES
CA...NONE.
PZ...SMALL CRAFT ADVISORY FROM 9 AM TO 3 PM PDT TUESDAY FOR MRY BAY-
PIGEON PT TO PT PINOS 0-10 NM-PIGEON PT TO PT PINOS 10-60
NM.
SMALL CRAFT ADVISORY FROM 3 AM TO 3 PM PDT TUESDAY FOR PT ARENA
TO PT REYES 0-10 NM-PT ARENA TO PT REYES 10-60 NM-PT PINOS
TO PT PIEDRAS BLANCAS 0-10 NM-PT REYES TO PIGEON PT 0-10 NM.
SHORT TERM...MURDOCK
LONG TERM....MURDOCK
AVIATION...JM
MARINE...CANEPA
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