Flash Flood Watch
Issued by NWS San Francisco Bay Area, CA

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WGUS66 KMTR 222011
FFAMTR

URGENT - IMMEDIATE BROADCAST REQUESTED
FLOOD WATCH
NATIONAL WEATHER SERVICE SAN FRANCISCO CA
1211 PM PST SUN JAN 22 2017

...FLASH FLOOD WATCH REMAINS IN EFFECT FOR THE ENTIRE SAN
FRANCISCO BAY AREA AND CENTRAL COAST THOUGH MONDAY EVENING...

.A COLD FRONT PUSHED THROUGH THE REGION EARLY SUNDAY MORNING
BRINING PERIODS OF MODERATE TO HEAVY RAINFALL. THE AREA IS NOW IN
THE UNSTABLE POST FRONTAL ENVIRONMENT. SHOWERS AND
THUNDERSTORMS ARE ANTICIPATED TO MOVE INLAND THIS AFTERNOON BEFORE
STRENGTHENING INTO THIS EVENING. ADDITIONAL SHOWERS AND
THUNDERSTORMS WILL MOVE THROUGH THE AREA TONIGHT AND THROUGH
MONDAY. THIS ADDITIONAL RAINFALL ON ALREADY SATURATED SOILS AND
FULL RESERVOIRS WILL LIKELY LEAD TO FLASH FLOODING OF AREA STREAMS
AND RIVERS AS WELL AS LOCALIZED URBAN AREAS. MUD/ROCK SLIDES AND
DOWNED TREES SHOULD ALSO BE EXPECTED... ESPECIALLY DURING INTENSE
BURSTS OF RAINFALL THAT OCCUR DURING THUNDERSTORMS.

CAZ006-505>513-516>518-528>530-240200-
/O.EXT.KMTR.FF.A.0004.000000T0000Z-170124T0200Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
SAN FRANCISCO-
COASTAL NORTH BAY INCLUDING POINT REYES NATIONAL SEASHORE-
NORTH BAY INTERIOR VALLEYS-NORTH BAY MOUNTAINS-
SAN FRANCISCO BAY SHORELINE-SAN FRANCISCO PENINSULA COAST-
EAST BAY INTERIOR VALLEYS-EAST BAY HILLS AND THE DIABLO RANGE-
SANTA CRUZ MOUNTAINS-SANTA CLARA VALLEY INCLUDING SAN JOSE-
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 MONUMENT-
NORTHERN SALINAS VALLEY/HOLLISTER VALLEY AND CARMEL VALLEY-
NORTHERN MONTEREY BAY-SOUTHERN MONTEREY BAY AND BIG SUR COAST-
INCLUDING THE CITIES OF...SAN FRANCISCO...TAMALPAIS-HOMESTEAD...
SAUSALITO...SANTA ROSA...SOUTH SANTA ROSA...NAPA...SAN RAFAEL...
PETALUMA...NOVATO...ROHNERT PARK...ANGWIN...
LAGUNITAS-FOREST KNOLLS...WOODACRE...OAKLAND...FREMONT...
HAYWARD...DALY CITY...BERKELEY...PACIFICA...CONCORD...ANTIOCH...
LIVERMORE...WALNUT CREEK...PLEASANTON...PITTSBURG...SAN RAMON...
BLACKHAWK...SCOTTS VALLEY...BOULDER CREEK...DAY VALLEY...
SAN JOSE...GREENFIELD...KING CITY...SALINAS...SANTA CRUZ...
WATSONVILLE...LIVE OAK...SEASIDE...MONTEREY...MARINA
1211 PM PST SUN JAN 22 2017

...FLASH FLOOD WATCH NOW IN EFFECT THROUGH MONDAY AFTERNOON...

THE FLASH FLOOD WATCH IS NOW IN EFFECT FOR

* A PORTION OF WESTERN CALIFORNIA...INCLUDING THE FOLLOWING
  AREAS...COASTAL NORTH BAY INCLUDING POINT REYES NATIONAL
  SEASHORE...EAST BAY HILLS AND THE DIABLO RANGE...EAST BAY
  INTERIOR VALLEYS...MOUNTAINS OF SAN BENITO COUNTY AND INTERIOR
  MONTEREY COUNTY INCLUDING PINNACLES NATIONAL MONUMENT...NORTH
  BAY INTERIOR VALLEYS...NORTH BAY MOUNTAINS...NORTHERN MONTEREY
  BAY...NORTHERN SALINAS VALLEY/HOLLISTER VALLEY AND CARMEL
  VALLEY...SAN FRANCISCO...SAN FRANCISCO BAY SHORELINE...SAN
  FRANCISCO PENINSULA COAST...SANTA CLARA VALLEY INCLUDING SAN
  JOSE...SANTA CRUZ MOUNTAINS...SANTA LUCIA MOUNTAINS AND LOS
  PADRES NATIONAL FOREST...SOUTHERN MONTEREY BAY AND BIG SUR
  COAST AND SOUTHERN SALINAS VALLEY/ARROYO SECO AND LAKE SAN
  ANTONIO.

* THROUGH MONDAY AFTERNOON

* PERIODS OF HEAVY RAIN ON ALREADY SATURATED SOILS AND FULL
  RESERVOIRS WILL IMPACT THE REGION BEGINNING THIS AFTERNOON AND
  LASTING THROUGH MONDAY.

* THE PRIMARY IMPACTS WILL BE LOCALIZED PONDING OF WATER ON LOW
  LYING ROADWAYS WITH POOR DRAINAGE...RAPID RISES ON STREAMS AND
  CREEKS WITH SOME LIKELY EXCEEDING BANKFULL...SOME RIVER
  FLOODING...AND POTENTIAL ROCK AND MUD SLIDES. RECENT BURN
  SCARS WILL ALSO BE SUSCEPTIBLE TO DEBRIS FLOWS DURING PERIODS
  OF INTENSE RAINFALL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A FLASH FLOOD WATCH MEANS THAT CONDITIONS MAY DEVELOP THAT LEAD
TO FLASH FLOODING. FLASH FLOODING IS A VERY DANGEROUS SITUATION.

YOU SHOULD MONITOR LATER FORECASTS AND BE PREPARED TO TAKE ACTION
SHOULD FLASH FLOOD WARNINGS BE ISSUED.

&&

$$
DRP


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