299  
FXUS66 KMTR 282329  
AFDMTR  
 
AREA FORECAST DISCUSSION  
NATIONAL WEATHER SERVICE SAN FRANCISCO CA  
429 PM PDT TUE OCT 28 2025  
   
..NEW AVIATION, MARINE
 
 
   
KEY MESSAGES
 
 
UPDATED AT 1217 PM PDT TUE OCT 28 2025  
 
- PLEASANT WEATHER THROUGH THIS WEEKEND WITH TEMPERATURES  
SLIGHTLY ABOVE SEASONAL AVERAGES  
 
- MILD OFFSHORE FLOW THROUGH WEDNESDAY MORNING  
 

 
   
SHORT TERM
 
 
ISSUED AT 1217 PM PDT TUE OCT 28 2025  
(THIS EVENING THROUGH WEDNESDAY)  
 
A LOOK AT THE LATEST SATELLITE IMAGERY SHOWS NARY A CLOUD IN THE SKY  
ACROSS THE BAY AREA AND CENTRAL COAST. UPPER LEVEL RIDGING HAS TAKEN  
HOLD AND IS CAUSING THE WARMER TEMPERATURES THAT WE WILL SEE THROUGH  
THE NEXT COUPLE OF DAYS. THIS IS BEING REINFORCED BY MILD OFFSHORE  
FLOW, THE PRODUCT OF A PRESSURE GRADIENT FROM A THERMAL TROUGH OVER  
THE STATE AND SURFACE HIGH PRESSURE SYSTEM OVER THE NORTHERN  
ROCKIES. THE SFO-WMC GRADIENT PEAKED AT AROUND 14-15Z (7-8 AM  
PACIFIC TIME) WITH A GRADIENT VALUE OF -10.3 MB. THE GRADIENT HAS  
BEGUN TO RELAX SINCE THEN, BUT AS OF 18Z (11 AM) IT WAS STILL VERY  
ROBUST AT -9.4 MB. ACROSS THE HIGHER ELEVATIONS, LIGHT TO GENTLE  
OFFSHORE BREEZES ARE EXPECTED TO CONTINUE THROUGH WEDNESDAY  
MORNING, BEFORE DIMINISHING THROUGH THE DAY.  
 
HIGH TEMPERATURES TODAY WILL RANGE FROM THE UPPER 70S TO THE LOWER  
80S IN THE INLAND VALLEYS, THE LOWER TO MIDDLE 70S CLOSE TO THE  
BAYS, AND THE MIDDLE TO UPPER 60S ALONG THE PACIFIC COAST. TOMORROW,  
HIGHS WILL RISE A FEW DEGREES IN THE INLAND AREAS, WITH LOWER TO  
MIDDLE 80S IN THE INLAND VALLEYS AND THE MIDDLE 70S TO NEAR 80 IN  
THE BAYSIDE AREAS.  
 

 
   
LONG TERM
 
 
ISSUED AT 1217 PM PDT TUE OCT 28 2025  
(WEDNESDAY NIGHT THROUGH NEXT MONDAY)  
 
BY THURSDAY, THE OFFSHORE WINDS WILL TURN TOWARDS A MORE ONSHORE  
PATTERN, AS THE UPPER LEVEL RIDGING DECAYS INTO A MORE ZONAL FLOW,  
ALLOWING FOR ENHANCED CLOUD COVER ACROSS THE BAY AREA. HIGHS IN THE  
BAY AREA INTERIOR VALLEYS DIP INTO THE LOWER TO MIDDLE 70S, WITH THE  
SAN FRANCISCO BAY SEEING HIGHS IN THE MIDDLE 60S TO LOWER 70S. THE  
PACIFIC COAST WILL SEE HIGHS IN THE UPPER 50S TO LOWER 60S, WHILE  
THE INTERIOR CENTRAL COAST REMAINS WARM IN THE UPPER 70S TO THE  
MIDDLE 80S. TEMPERATURES RECOVER ON FRIDAY WITH HIGHS IN THE UPPER  
70S TO THE MIDDLE 80S IN THE INLAND VALLEYS, AND THE LOWER TO MIDDLE  
70S CLOSE TO THE BAYS, WITH THE WARMER CONDITIONS CONTINUING INTO  
THE WEEKEND AS THE UPPER LEVEL RIDGE REBUILDS ITSELF.  
 
THE NEXT CHANCE FOR RAIN ARRIVES RIGHT AT THE END OF THE 7-DAY  
FORECAST PERIOD AND CONTINUES THROUGH THE MIDDLE OF THE FIRST FULL  
WEEK OF NOVEMBER. ENSEMBLE MODEL PRODUCTS ARE SUGGESTING THAT AN  
UPPER LEVEL TROUGH WILL DEVELOP IN THE NORTHEAST PACIFIC AND MOVE  
INTO THE WEST COAST. BEYOND THAT, DETAILS ARE IMPOSSIBLE TO PIN  
DOWN, AND INTERESTED PARTIES SHOULD KEEP AN EYE ON THE FORECAST  
UPDATES AS THE WEATHER PATTERN EVOLVES.  
 

 
   
AVIATION
 
 
(00Z TAFS)  
ISSUED AT 426 PM PDT TUE OCT 28 2025  
 
VFR CONDITIONS AT MOST TERMINALS THE NEXT 24-30 HRS. THE  
EXCEPTIONS WILL BE SOME SEA SPRAY HAZE AT HAF AND A FEW HOURS OF  
PATCHY FOG AT STS LATE NIGHT. WINDS WILL BE DIURNALLY DRIVEN.  
 
VICINITY OF SFO...VFR. LINGERING ONSHORE WILL SWITCH TO ONSHORE  
THIS EVENING. EXPECT A STRONGER ONSHORE PUSH WEDNESDAY AFTERNOON.  
 
SFO BRIDGE APPROACH...SIMILAR TO SFO.  
 
MONTEREY BAY TERMINALS...VFR.  
 

 
   
MARINE
 
 
(TONIGHT THROUGH NEXT SUNDAY)  
ISSUED AT 426 PM PDT TUE OCT 28 2025  
 
HIGH PRESSURE TO NORTH AND LOW PRESSURE TO THE SOUTH WILL MAINTAIN  
MODERATE NORTHERLY FLOW OVER THE WATERS FOR THE WEEK. WINDS WILL  
BE LOCALLY STRONGER WITH OCCASIONAL GALE FORCE GUSTS OVER THE  
OUTER WATERS AND NEAR SHORE SOUTH OF POINT SUR. SEAS STAY LIGHT  
INTO WEDNESDAY BUT BUILD INTO THURSDAY. SEAS SHOULD SUBSIDE SOME  
ON FRIDAY AND REBUILD AGAIN OVER THE WEEKEND.  
 

 
   
MTR WATCHES/WARNINGS/ADVISORIES
 
 
CA...NONE.  
PZ...SMALL CRAFT ADVISORY FROM 3 PM WEDNESDAY TO 3 AM PDT THURSDAY  
FOR PIGEON PT TO PT PINOS 0-10 NM.  
 
SMALL CRAFT ADVISORY UNTIL 9 PM PDT THURSDAY FOR PIGEON PT TO PT  
PINOS 10-60 NM-PT ARENA TO PT REYES 10-60 NM.  
 

 
 

 
 
SHORT TERM...DIALH  
LONG TERM....DIALH  
AVIATION...MM  
MARINE...MM  
 
VISIT US AT WWW.WEATHER.GOV/SANFRANCISCO  
 
FOLLOW US ON FACEBOOK, X, AND YOUTUBE AT:  
WWW.FACEBOOK.COM/NWSBAYAREA  
X.COM/NWSBAYAREA  
WWW.YOUTUBE.COM/NWSBAYAREA  
 
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