Contra Costa County, California
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The National Weather Service's Watches, Warnings and Advisories by state counties include: Thunderstorm, Tornado, Flood, Flash Flood, Winter Storm, High Wind, Gale, Small Aircraft, High Surf, Marine, Heat, Air Quality, Ashfall, Hazardous, and Special Statements.
Weather Alerts: Contra Costa County, California
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Flash Flood Watch
CAZ006-505>513-516>518-528>530-212300-
/O.CON.KMTR.FF.A.0004.170122T0800Z-170123T0200Z/
/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
346 AM PST SAT JAN 21 2017

...FLASH FLOOD WATCH REMAINS IN EFFECT FROM LATE TONIGHT THROUGH
SUNDAY AFTERNOON...

THE FLASH FLOOD WATCH CONTINUES 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.

* FROM LATE TONIGHT THROUGH SUNDAY AFTERNOON

* PERIODS OF HEAVY RAIN ON ALREADY SATURATED SOILS WILL IMPACT
THE REGION FROM LATE TONIGHT THROUGH SUNDAY AFTERNOON.
ADDITIONAL RAINFALL AMOUNTS FROM 0.75 TO 1.5 INCHES ARE POSSIBLE
AT LOWER ELEVATIONS WITH 2 TO 5 INCHES ACROSS THE NORTH BAY AND
COASTAL SLOPES.

* 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.

&&

$$
High Wind Warning
CAZ006-509-511-512-517-518-528>530-212300-
/O.UPG.KMTR.HW.A.0003.170122T0600Z-170122T1800Z/
/O.NEW.KMTR.HW.W.0003.170122T0600Z-170122T1800Z/
SAN FRANCISCO-SAN FRANCISCO PENINSULA COAST-
EAST BAY HILLS AND THE DIABLO RANGE-SANTA CRUZ MOUNTAINS-
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...PACIFICA...BLACKHAWK...
SCOTTS VALLEY...BOULDER CREEK...DAY VALLEY...SALINAS...
SANTA CRUZ...WATSONVILLE...LIVE OAK...SEASIDE...MONTEREY...MARINA
412 AM PST SAT JAN 21 2017

...HIGH WIND WARNING IN EFFECT FROM 10 PM THIS EVENING TO 10 AM
PST SUNDAY...

THE NATIONAL WEATHER SERVICE IN SAN FRANCISCO HAS ISSUED A HIGH
WIND WARNING...WHICH IS IN EFFECT FROM 10 PM THIS EVENING TO
10 AM PST SUNDAY. THE HIGH WIND WATCH IS NO LONGER IN EFFECT.

* TIMING...LATE TONIGHT INTO SUNDAY MORNING.

* WINDS...SUSTAINED SOUTHERLY WINDS 35 TO 50 MPH WITH GUSTS
GREATER THAN 60 MPH...STRONGEST NEAR THE COAST AND IN HIGHER
ELEVATIONS.

* IMPACTS...GUSTY WINDS WILL MAKE DRIVING DIFFICULT...ESPECIALLY
FOR DRIVERS OF HIGH PROFILE VEHICLES. SINCE THE SOILS ARE
SATURATED...THERE IS A HEIGHTENED POTENTIAL FOR DOWNED TREES
AND POWER OUTAGES.

A HIGH WIND WARNING MEANS A HAZARDOUS HIGH WIND EVENT IS EXPECTED
OR OCCURRING. SUSTAINED WIND SPEEDS OF AT LEAST 40 MPH OR GUSTS
OF 58 MPH OR MORE CAN LEAD TO PROPERTY DAMAGE.

&&

$$

Wind Advisory
CAZ508-510-513-516-212300-
/O.UPG.KMTR.HW.A.0003.170122T0600Z-170122T1800Z/
/O.NEW.KMTR.WI.Y.0006.170122T0600Z-170122T1800Z/
SAN FRANCISCO BAY SHORELINE-EAST BAY INTERIOR VALLEYS-
SANTA CLARA VALLEY INCLUDING SAN JOSE-
SOUTHERN SALINAS VALLEY/ARROYO SECO AND LAKE SAN ANTONIO-
INCLUDING THE CITIES OF...OAKLAND...FREMONT...HAYWARD...
DALY CITY...BERKELEY...CONCORD...ANTIOCH...LIVERMORE...
WALNUT CREEK...PLEASANTON...PITTSBURG...SAN RAMON...SAN JOSE...
GREENFIELD...KING CITY
412 AM PST SAT JAN 21 2017

...WIND ADVISORY IN EFFECT FROM 10 PM THIS EVENING TO 10 AM PST
SUNDAY...

THE NATIONAL WEATHER SERVICE IN SAN FRANCISCO HAS ISSUED A WIND
ADVISORY...WHICH IS IN EFFECT FROM 10 PM THIS EVENING TO 10 AM
PST SUNDAY. THE HIGH WIND WATCH IS NO LONGER IN EFFECT.

* TIMING...LATE TONIGHT INTO SUNDAY MORNING.

* WINDS...SUSTAINED SOUTHERLY WINDS 20 TO 35 MPH WITH LOCAL GUSTS
GREATER THAN 45 MPH.

* IMPACTS...GUSTY WINDS WILL MAKE DRIVING DIFFICULT...ESPECIALLY
FOR DRIVERS OF HIGH PROFILE VEHICLES. SINCE THE SOILS ARE
SATURATED...THERE IS A HEIGHTENED POTENTIAL FOR DOWNED TREES
AND POWER OUTAGES.

A WIND ADVISORY MEANS THAT WINDS OF 35 MPH ARE EXPECTED. WINDS
THIS STRONG CAN MAKE DRIVING DIFFICULT...ESPECIALLY FOR HIGH
PROFILE VEHICLES. USE EXTRA CAUTION.

&&

$$

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