Flash Flood Warning 8, NWS San Francisco Bay Area, CA

Issued

Dec 11, 2014, 9:00 AM PST (17:00 UTC)

Expired

Dec 11, 2014, 4:00 PM PST

In force

7 hr

Issued by

NWS San Francisco Bay Area, CA

Area

Storm-based polygon

Flood severity

None

Counties Napa County, CA, Sonoma County, CA

The Sacramento radar (KDAX), 111 km from the middle of the area, began a volume at 17:03 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.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

840 
WGUS56 KMTR 111700
FFWMTR
CAC055-097-112000-
/O.NEW.KMTR.FF.W.0008.141211T1700Z-141211T2000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN FRANCISCO CA
900 AM PST THU DEC 11 2014

THE NATIONAL WEATHER SERVICE IN THE SAN FRANCISCO BAY AREA HAS
ISSUED A

* FLASH FLOOD WARNING FOR FLASH FLOODING AND DEBRIS FLOWS FOR...
  NAPA COUNTY IN NORTHERN CALIFORNIA...
  SONOMA COUNTY IN NORTHERN CALIFORNIA...
  THIS INCLUDES THE CITIES OF...GEYSERVILLE...SANTA ROSA...

* UNTIL NOON PST

* AT 857 AM PST...THE PUBLIC REPORTED HEAVY RAIN AND 
FLOODING...FROM   AN AREA OF HEAVY RAIN OVER THE WARNED AREA. 
SIGNIFICANT FLOODING IS OBSERVED IN HEALDSBURG. FLASH FLOODING WILL 
OCCUR ON STREAMS AND CREEKS IN THE AREA.

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO CA SEA
  RANCH...HEALDSBURG AND CLOVERDALE

PRECAUTIONARY/PREPAREDNESS ACTIONS...

EXCESSIVE RUNOFF FROM HEAVY RAINFALL WILL CAUSE FLOODING OF SMALL
CREEKS AND STREAMS...HIGHWAYS AND UNDERPASSES. ADDITIONALLY...COUNTRY
ROADS AND FARMLANDS ALONG THE BANKS OF CREEKS...STREAMS AND OTHER LOW
LYING AREAS ARE SUBJECT TO FLOODING.

MOST FLOOD DEATHS OCCUR IN AUTOMOBILES. NEVER DRIVE YOUR VEHICLE INTO
AREAS WHERE THE WATER COVERS THE ROADWAY. WHEN ENCOUNTERING FLOODED
ROADS MAKE THE SMART CHOICE...TURN AROUND...DONT DROWN.

&&

LAT...LON 3885 12281 3880 12274 3872 12269 3871 12265
      3868 12262 3845 12266 3842 12263 3844 12273
      3831 12305 3845 12314 3850 12326 3877 12354
      3881 12327 3881 12314 3883 12314 3886 12298
TIME...MOT...LOC 1700Z 180DEG 0KT 3860 12283

$$

JOHNSON

059 
WGUS56 KMTR 111952
FFWMTR
CAC055-097-120000-
/O.EXT.KMTR.FF.W.0008.000000T0000Z-141212T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SAN FRANCISCO CA
1152 AM PST THU DEC 11 2014

THE NATIONAL WEATHER SERVICE IN THE SAN FRANCISCO BAY AREA HAS
EXTENDED THE

* FLASH FLOOD WARNING FOR...
  NAPA COUNTY IN NORTHERN CALIFORNIA...
  SONOMA COUNTY IN NORTHERN CALIFORNIA...
  THIS INCLUDES THE CITIES OF...GEYSERVILLE...SANTA ROSA...

* UNTIL 400 PM PST.

* AT 1149 AM PST...THE PUBLIC REPORTED FLOODING ON THE RUSSIAN RIVER 
NEAR CLOVERDALE AND GEYSERVILLE. FLOODING OF SMALL CREEKS AND 
STREAMS NEAR SANTA ROSA IS ALSO CONTINUING. THE WATERS OF THE 
RUSSIAN WILL TAKE A FEW HOURS TO RECEDE BELOW FLOOD STAGE. 

* LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO CA SEA
  RANCH...HEALDSBURG AND CLOVERDALE

A FLASH FLOOD WARNING MEANS THAT FLOODING IS OCCURRING OR IS
IMMINENT.

RUNOFF FROM HEAVY RAINFALL WILL CAUSE LOCALIZED FLOODING OF SMALL
CREEKS AND STREAMS AS WELL AS ROADWAYS...UNDERPASSES AND OTHER LOW
LYING SPOTS. DO NOT ATTEMPT TO CROSS SWIFTLY FLOWING WATER OR WATER
OF UNKNOWN DEPTH. TURN AROUND...DONT DROWN.

IT IS IMPORTANT FOR CAMPERS AND HIKERS TO KNOW WHERE THEY ARE
RELATIVE TO CREEKS...STREAMS...OR RIVERS WHICH CAN BECOME DANGEROUS
IN HEAVY RAINS. BE PARTICULARLY AWARE IN HILLY TERRAIN WHERE MANY LOW
WATER CROSSINGS CAN QUICKLY BECOME KILLERS.


LAT...LON 3885 12281 3880 12274 3872 12269 3871 12265
      3868 12262 3845 12266 3842 12263 3844 12273
      3831 12305 3845 12314 3850 12326 3877 12354
      3881 12327 3881 12314 3883 12314 3886 12298

$$

JOHNSON

479 
WGUS76 KMTR 112356
FFSMTR

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SAN FRANCISCO CA
356 PM PST THU DEC 11 2014

CAC055-097-120006-
/O.EXP.KMTR.FF.W.0008.000000T0000Z-141212T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
NAPA CA-SONOMA CA-
356 PM PST THU DEC 11 2014

...THE FLASH FLOOD WARNING WILL EXPIRE AT 400 PM PST FOR SONOMA AND
NAPA COUNTIES...

MINOR FLOODING WILL CONTINUE ON AREA CREEKS AND STREAMS AND ALONG 
ROADWAYS.

LAT...LON 3885 12281 3880 12274 3872 12269 3871 12265
      3868 12262 3845 12266 3842 12263 3844 12273
      3831 12305 3845 12314 3850 12326 3877 12354
      3881 12327 3881 12314 3883 12314 3886 12298

$$

JOHNSON

Flash Flood Warnings in California, 2014Every flash flood warning in 2014

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