581
WWUS76 KMTR 300551
NPWMTR
URGENT - WEATHER MESSAGE
NATIONAL WEATHER SERVICE SAN FRANCISCO CA
951 PM PST MON DEC 29 2025
CAZ510-301700-
/O.EXA.KMTR.FG.Y.0039.000000T0000Z-251230T1800Z/
/O.CON.KMTR.CW.Y.0005.251230T0900Z-251230T1700Z/
EAST BAY INTERIOR VALLEYS-
951 PM PST MON DEC 29 2025
..DENSE FOG ADVISORY IN EFFECT UNTIL 10 AM PST TUESDAY
...COLD WEATHER ADVISORY REMAINS IN EFFECT FROM 1 AM TO 9 AM PST
TUESDAY...
* WHAT...FOR THE DENSE FOG ADVISORY, VISIBILITY ONE QUARTER MILE OR
LESS IN DENSE FOG. FOR THE COLD WEATHER ADVISORY, COLD CONDITIONS
WITH TEMPERATURES AS LOW AS 36 EXPECTED.
* WHERE...EAST BAY INTERIOR VALLEYS.
* WHEN...FOR THE DENSE FOG ADVISORY, UNTIL 10 AM PST TUESDAY. FOR THE
COLD WEATHER ADVISORY, FROM 1 AM TO 9 AM PST TUESDAY.
* IMPACTS...COLD CONDITIONS WILL BE HAZARDOUS TO SENSITIVE
POPULATIONS SUCH AS UNHOUSED INDIVIDUALS. PROLONGED EXPOSURE TO THE
COLD CONDITIONS WILL LEAD TO HYPOTHERMIA FOR PEOPLE, PETS, AND
LIVESTOCK. COLD CONDITIONS MAY DAMAGE OR KILL SENSITIVE CROPS,
PLANTS, AND VEGETATION IF APPROPRIATE PRECAUTIONS ARE NOT TAKEN.
LOW VISIBILITY COULD MAKE DRIVING CONDITIONS HAZARDOUS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
ENSURE PORTABLE HEATERS ARE WORKING PROPERLY AND ARE USED CORRECTLY
TO AVOID SPARKING A FIRE INDOORS. DO NOT USE GENERATORS OR GRILLS
INSIDE AS CARBON MONOXIDE POISONING CAN RESULT.
CHECK WITH YOUR LOCAL, CITY, OR COUNTY OFFICIALS FOR INFORMATION ON
AVAILABLE WARMING CENTERS.
BE SURE TO DRESS IN LAYERS IF OUTDOORS. MAKE SURE THAT PETS AND
LIVESTOCK HAVE ADEQUATE FOOD, UNFROZEN WATER, AND WARMTH. COVER OR
TEND TO SENSITIVE CROPS, PLANTS, AND VEGETATION.
IF DRIVING, SLOW DOWN, USE YOUR HEADLIGHTS, AND LEAVE PLENTY OF
DISTANCE AHEAD OF YOU.
IF COMMUTING, ALLOW EXTRA DRIVE TIME TO REACH YOUR DESTINATION
SAFELY.
CAZ506-301700-
/O.CON.KMTR.FG.Y.0039.000000T0000Z-251230T1800Z/
/O.CON.KMTR.CW.Y.0005.251230T0900Z-251230T1700Z/
NORTH BAY INTERIOR VALLEYS-
951 PM PST MON DEC 29 2025
..DENSE FOG ADVISORY REMAINS IN EFFECT UNTIL 10 AM PST TUESDAY
...COLD WEATHER ADVISORY REMAINS IN EFFECT FROM 1 AM TO 9 AM PST
TUESDAY...
* WHAT...FOR THE DENSE FOG ADVISORY, VISIBILITY ONE QUARTER MILE OR
LESS IN DENSE FOG. FOR THE COLD WEATHER ADVISORY, COLD CONDITIONS
WITH TEMPERATURES AS LOW AS 36 EXPECTED.
* WHERE...NORTH BAY INTERIOR VALLEYS.
* WHEN...FOR THE DENSE FOG ADVISORY, UNTIL 10 AM PST TUESDAY. FOR THE
COLD WEATHER ADVISORY, FROM 1 AM TO 9 AM PST TUESDAY.
* IMPACTS...COLD CONDITIONS WILL BE HAZARDOUS TO SENSITIVE
POPULATIONS SUCH AS UNHOUSED INDIVIDUALS. PROLONGED EXPOSURE TO THE
COLD CONDITIONS WILL LEAD TO HYPOTHERMIA FOR PEOPLE, PETS, AND
LIVESTOCK. COLD CONDITIONS MAY DAMAGE OR KILL SENSITIVE CROPS,
PLANTS, AND VEGETATION IF APPROPRIATE PRECAUTIONS ARE NOT TAKEN.
LOW VISIBILITY COULD MAKE DRIVING CONDITIONS HAZARDOUS.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
ENSURE PORTABLE HEATERS ARE WORKING PROPERLY AND ARE USED CORRECTLY
TO AVOID SPARKING A FIRE INDOORS. DO NOT USE GENERATORS OR GRILLS
INSIDE AS CARBON MONOXIDE POISONING CAN RESULT.
CHECK WITH YOUR LOCAL, CITY, OR COUNTY OFFICIALS FOR INFORMATION ON
AVAILABLE WARMING CENTERS.
BE SURE TO DRESS IN LAYERS IF OUTDOORS. MAKE SURE THAT PETS AND
LIVESTOCK HAVE ADEQUATE FOOD, UNFROZEN WATER, AND WARMTH. COVER OR
TEND TO SENSITIVE CROPS, PLANTS, AND VEGETATION.
IF DRIVING, SLOW DOWN, USE YOUR HEADLIGHTS, AND LEAVE PLENTY OF
DISTANCE AHEAD OF YOU.
IF COMMUTING, ALLOW EXTRA DRIVE TIME TO REACH YOUR DESTINATION
SAFELY.
CAZ504-514>518-301700-
/O.CON.KMTR.CW.Y.0005.251230T0900Z-251230T1700Z/
NORTH BAY INTERIOR MOUNTAINS-EASTERN SANTA CLARA HILLS-EAST BAY
HILLS-SOUTHERN SALINAS VALLEY/ARROYO SECO AND LAKE SAN ANTONIO-
SANTA LUCIA MOUNTAINS AND LOS PADRES NATIONAL FOREST-MOUNTAINS OF
SAN BENITO COUNTY AND INTERIOR MONTEREY COUNTY INCLUDING
PINNACLES NATIONAL PARK-
951 PM PST MON DEC 29 2025
...COLD WEATHER ADVISORY REMAINS IN EFFECT FROM 1 AM TO 9 AM PST
TUESDAY...
* WHAT...COLD CONDITIONS WITH TEMPERATURES AS LOW AS 36 EXPECTED.
* WHERE...INTERIOR MONTEREY COUNTY AND THE SANTA LUCIA RANGE, MOST OF
SAN BENITO COUNTY AND THE CHOLAME HILLS IN SOUTHEAST MONTEREY
COUNTY, NORTH BAY INTERIOR MOUNTAINS, EASTERN SANTA CLARA HILLS,
EAST BAY HILLS, AND SOUTHERN SALINAS VALLEY/ARROYO SECO AND LAKE
SAN ANTONIO.
* WHEN...FROM 1 AM TO 9 AM PST TUESDAY.
* IMPACTS...COLD CONDITIONS WILL BE HAZARDOUS TO SENSITIVE
POPULATIONS SUCH AS UNHOUSED INDIVIDUALS. PROLONGED EXPOSURE TO THE
COLD CONDITIONS WILL LEAD TO HYPOTHERMIA FOR PEOPLE, PETS, AND
LIVESTOCK. COLD CONDITIONS MAY DAMAGE OR KILL SENSITIVE CROPS,
PLANTS, AND VEGETATION IF APPROPRIATE PRECAUTIONS ARE NOT TAKEN.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
ENSURE PORTABLE HEATERS ARE WORKING PROPERLY AND ARE USED CORRECTLY
TO AVOID SPARKING A FIRE INDOORS. DO NOT USE GENERATORS OR GRILLS
INSIDE AS CARBON MONOXIDE POISONING CAN RESULT.
CHECK WITH YOUR LOCAL, CITY, OR COUNTY OFFICIALS FOR INFORMATION ON
AVAILABLE WARMING CENTERS.
BE SURE TO DRESS IN LAYERS IF OUTDOORS. MAKE SURE THAT PETS AND
LIVESTOCK HAVE ADEQUATE FOOD, UNFROZEN WATER, AND WARMTH. COVER OR
TEND TO SENSITIVE CROPS, PLANTS, AND VEGETATION.
JM
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