644
WGUS66 KMTR 231307
FFAMTR
FLOOD WATCH
NATIONAL WEATHER SERVICE SAN FRANCISCO CA
507 AM PST TUE DEC 23 2025
CAZ502>506-240000-
/O.CON.KMTR.FA.A.0005.000000T0000Z-251227T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MARIN COASTAL RANGE-SONOMA COASTAL RANGE-NORTH BAY INTERIOR
MOUNTAINS-COASTAL NORTH BAY INCLUDING POINT REYES NATIONAL
SEASHORE-NORTH BAY INTERIOR VALLEYS-
INCLUDING THE CITIES OF TAMALPAIS-HOMESTEAD, LAGUNITAS-FOREST
KNOLLS, SOUTH SANTA ROSA, NOVATO, SANTA ROSA, PETALUMA, WOODACRE,
ANGWIN, ROHNERT PARK, SAUSALITO, SAN RAFAEL, AND NAPA
507 AM PST TUE DEC 23 2025
..FLOOD WATCH REMAINS IN EFFECT THROUGH FRIDAY EVENING
* WHAT...FLOODING CAUSED BY EXCESSIVE RAINFALL CONTINUES TO BE
POSSIBLE.
* WHERE...NORTHERN SAN FRANCISCO BAY AREA (NAPA, SONOMA, AND MARIN
COUNTIES).
* WHEN...THROUGH FRIDAY EVENING.
* IMPACTS...EXCESSIVE RUNOFF MAY RESULT IN FLOODING OF RIVERS,
CREEKS, STREAMS, AND OTHER LOW-LYING AND FLOOD-PRONE LOCATIONS.
CREEKS AND STREAMS MAY RISE OUT OF THEIR BANKS. LOW WATER CROSSINGS
MAY BECOME FLOODED. FLOODING MAY OCCUR IN POOR DRAINAGE AND URBAN
AREAS.
* ADDITIONAL DETAILS...
- MULTIPLE ROUNDS OF MODERATE TO HEAVY RAINFALL ARE EXPECTED ACROSS
THE NORTH BAY THIS WEEK. AN ADDITIONAL 6-8" IS POSSIBLE OVER THE
NORTH BAY MOUNTAINS AND 4-5" OVER THE NORTH BAY VALLEYS BY
FRIDAY. NUISANCE FLOODING WILL INCREASE THROUGHOUT THE WEEK WITH
SHARP RISES IN SMALLER CREEKS AND MINOR FLOODING ALONG SOME OF
THE MAINSTREAM RIVERS (RUSSIAN RIVER, NAPA RIVER). DEBRIS FLOWS
ARE POSSIBLE PARTICULARLY FOR THE PICKETT BURN SCAR.
- HTTP://WWW.WEATHER.GOV/SAFETY/FLOOD
PRECAUTIONARY/PREPAREDNESS ACTIONS...
YOU SHOULD MONITOR LATER FORECASTS AND BE ALERT FOR POSSIBLE FLOOD
WARNINGS. THOSE LIVING IN AREAS PRONE TO FLOODING SHOULD BE PREPARED
TO TAKE ACTION SHOULD FLOODING DEVELOP.
CAZ006-508>510-512>518-528>530-240000-
/O.CON.KMTR.FA.A.0005.251223T1800Z-251227T0600Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SAN FRANCISCO-SAN FRANCISCO BAY SHORELINE-SAN FRANCISCO PENINSULA
COAST-EAST BAY INTERIOR VALLEYS-SANTA CRUZ MOUNTAINS-SANTA CLARA
VALLEY INCLUDING SAN JOSE-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-NORTHERN SALINAS VALLEY/HOLLISTER VALLEY
AND CARMEL VALLEY-NORTHERN MONTEREY BAY-SOUTHERN MONTEREY BAY AND
BIG SUR COAST-
INCLUDING THE CITIES OF HAYWARD, WATSONVILLE, GREENFIELD, DALY CITY,
PLEASANTON, CORDOZA RIDGE, SANTA CRUZ, BOULDER CREEK, MARINA,
FREMONT, LIVERMORE, SAN FRANCISCO, BERKELEY, OAKLAND, SEASIDE, SAN
JOSE, PACIFICA, KING CITY, SAN RAMON, DAY VALLEY, CONCORD, LIVE OAK,
SALINAS, MONTEREY, ANTIOCH, BLACKHAWK, SCOTTS VALLEY, WALNUT CREEK,
AND PITTSBURG
507 AM PST TUE DEC 23 2025
...FLOOD WATCH REMAINS IN EFFECT FROM 10 AM PST THIS MORNING THROUGH
FRIDAY EVENING...
* WHAT...FLOODING CAUSED BY EXCESSIVE RAINFALL CONTINUES TO BE
POSSIBLE.
* WHERE...SAN FRANCISCO COUNTY, SAN MATEO PENINSULA, EAST BAY, SOUTH
BAY, AND CENTRAL COAST
* WHEN...FROM 10 AM PST THIS MORNING THROUGH FRIDAY EVENING.
* IMPACTS...EXCESSIVE RUNOFF MAY RESULT IN FLOODING OF RIVERS,
CREEKS, STREAMS, AND OTHER LOW-LYING AND FLOOD-PRONE LOCATIONS.
CREEKS AND STREAMS MAY RISE OUT OF THEIR BANKS. LOW WATER CROSSINGS
MAY BECOME FLOODED. FLOODING MAY OCCUR IN POOR DRAINAGE AND URBAN
AREAS.
* ADDITIONAL DETAILS...
- A SERIES OF ATMOSPHERIC RIVERS WILL RESULT IN MULTIPLE ROUNDS OF
MODERATE TO HEAVY RAINFALL THIS WEEK ACROSS THE BAY AREA AND
CENTRAL COAST. AN ADDITIONAL 2-4" OF RAIN IS EXPECTED ACROSS THE
INTERIOR WITH LOCALLY HIGHER TOTALS BETWEEN 4-6" ACROSS THE SANTA
CRUZ MOUNTAINS AND UP TO 8" ACROSS THE SANTA LUCIA RANGE.
FLOODING POTENTIAL WILL INCREASE WITH EACH SUCCESSIVE ROUND OF
RAIN. SHARP RISES IN SMALLER CREEKS AND STREAMS ARE EXPECTED WITH
AT LEAST SOME POTENTIAL FOR MINOR FLOODING IN MAINSTREAM RIVERS.
- HTTP://WWW.WEATHER.GOV/SAFETY/FLOOD
PRECAUTIONARY/PREPAREDNESS ACTIONS...
YOU SHOULD MONITOR LATER FORECASTS AND BE ALERT FOR POSSIBLE FLOOD
WARNINGS. THOSE LIVING IN AREAS PRONE TO FLOODING SHOULD BE PREPARED
TO TAKE ACTION SHOULD FLOODING DEVELOP.
KENNEDY
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page