Flash Flood Warning 15, NWS San Francisco Bay Area, CA

Issued

Feb 2, 1998, 4:00 PM PST (00:00 UTC)

Expired

Feb 3, 1998, 12:00 AM PST

In force

8 hr

Issued by

NWS San Francisco Bay Area, CA

Area

Whole counties

County Napa County, CA

The Sacramento radar (KDAX), 57 km from the middle of the area, began a volume at 00:02 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

000 
TTAA00 KSFO 030007
FFWSFO
CAC097-055-041-013-001-075-081-085-087-053-069-030800-
 
BULLETIN -EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN FRANCISCO CA
400 PM PST MON FEB 2 1998
 
THE NATIONAL WEATHER SERVICE HAS ISSUED A FLASH FLOOD WARNING UNTIL
MIDNIGHT TONIGHT FOR PEOPLE IN THE FOLLOWING COUNTIES...

IN WEST CENTRAL CALIFORNIA
...SONOMA...NAPA AND SAN BENITO COUNTIES...

...A FLASH FLOOD WARNING CONTINUES FOR SANTA CRUZ...MARIN...CONTRA
COSTA...ALAMEDA...SAN FRANCISCO...SAN MATEO...SANTA CLARA AND
MONTEREY COUNTIES UNTIL MIDNIGHT TONIGHT...

BETWEEN 3 AND 4 PM THIS AFTERNOON...HEAVY RAIN PUSHED NORTH INTO
SONOMA AND MARIN COUNTIES. RAIN RATES HAVE INCREASED IN THOSE
COUNTIES AND RAIN IS NOW FALLING AT THE RATE OF THREE TENTHS TO ONE
HALF INCH PER HOUR. RAPID RISES ARE EXPECTED LATE THIS AFTERNOON AND
EVENING ON MANY SMALL STREAMS AND CREEKS IN NAPA COUNTY AND ON THE
PETALUMA RIVER IN SONOMA COUNTY.

ALTHOUGH RAIN RATES HAVE DECREASED OVER THE SOUTH AND EAST BAY
COUNTIES...RADAR INDICATES A LARGE AREA OF MODERATE TO HEAVY RAIN
OFFSHORE. AS THIS AREA OF HEAVY RAIN MOVES ONSHORE IN THE NEXT
HOUR...RAIN RATES WILL INCREASE OVER ALL OF THE WARNING AREA ONCE
AGAIN. WITH SATURATED SOILS...CONTINUED HEAVY RAIN THIS AFTERNOON AND
EVENING WILL IMMEDIATELY RUNOFF INTO STREAMS AND CREEKS RESULTING IN
RAPID RISES. FLOODING IS ALSO LIKELY IN URBAN AREAS AND ALONG
ROADWAYS.

IN ADDITION...MUDSLIDES ARE POSSIBLE IN AREAS OF STEEP TERRAIN
THROUGHOUT THE WARNING AREA.

A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS
IMMINENT. MOST FLASH FLOOD DEATHS OCCUR IN AUTOMOBILES. DO NOT
ATTEMPT TO CROSS BRIDGES...DIPS...OR LOW SPOTS IN THE ROAD IF WATER
COVERS THR ROADWAY. NEVER TRY TO CROSS A FLOWING STREAM...EVEN A
SMALL ONE...ON FOOT. TO ESCAPE RISING WATER MOVE TO HIGHER GROUND.

DYKEMA
LEAD FORECASTER

Flash Flood Warnings in California, 1998Every flash flood warning in 1998

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.