Flash Flood Warning 7, NWS San Francisco Bay Area, CA

000 
WGUS76 KMTR 131845
FFSMTR

FLASH FLOOD STATEMENT
NATIONAL WEATHER SERVICE SAN FRANCISCO CA
1145 AM PDT TUE OCT 13 2009

CAC053-131854-
/O.EXP.KMTR.FF.W.0007.000000T0000Z-091013T1845Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
MONTEREY CA-
1145 AM PDT TUE OCT 13 2009

...THE FLASH FLOOD WARNING WILL EXPIRE AT 1145 AM PDT FOR THE BURN
AREAS OF MONTEREY COUNTY...

ALTHOUGH THE FLASH FLOOD WARNING IS BEING ALLOWED TO 
EXPIRE...ADDITIONAL HEAVY RAIN IS EXPECTED THROUGH THIS EVENING. 
RESIDENTS AND MOTORISTS IN AND BELOW RECENTLY BURNED AREAS SHOULD BE 
ALERT TO HEAVY MUD AND DEBRIS FLOWS WHICH MAY BLOCK ROADS AND 
CULVERTS.

MUD SLIDES AND ROCK SLIDES CAN POTENTIALLY TRAP AND KILL PEOPLE
CAUGHT IN THEIR PATH.

LAT...LON 3591 12147 3599 12150 3602 12159 3616 12168
      3625 12184 3630 12190 3634 12190 3639 12178
      3637 12168 3631 12165 3626 12155 3614 12142
      3609 12137 3588 12131 3582 12139
TIME...MOT...LOC 1844Z 180DEG 0KT 3635 12183

$$

SSA

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA CA
415 AM PDT TUE OCT 13 2009

...STRONG WINDS AND HEAVY RAIN THROUGH THIS EVENING...

.DISCUSSION...AS OF 3:15 AM PDT TUESDAY...RAIN AND WIND ARE STARTING
TO PICK UP ACROSS THE DISTRICT AS A POWERFUL PACIFIC STORM BEARS DOWN
ON THE COAST. SATL IMAGERY IS INDC THAT CLOUD TOPS ARE RAPIDLY
ENHANCING AND COOLING OFF THE CA COAST AS A 150 KT JET STREAK HAS NOW
REACHED 37/130. THIS HAS RAPIDLY INCREASED THE UPPER LEVEL
DIFFLUENCE...WHICH IS THE REASON FOR THE RAPID STRENGTHENING AS SEEN
ON SATL IMAGERY. AMSU IMAGERY IS INDC TPW VALUES OF GREATER THAN 1.5
INCHES JUST OFF THE COAST...NEAR 34/127. AMSU IMAGERY IS INDC
RAINFALL RATES AS OF 06Z OF 0.3 INCHES/HR NEAR 38/128. SINCE THE
CLOUD TOPS HAVE BEEN COOLING AND ENHANCING RAINFALL RATES HAVE
PROBABLY INCREASED.

SFC OBS ARE INDC THAT THE WINDS HAVE BEGUN TO PICK UP...NOW GUSTING
TO 30 MPH AT BOTH MONTEREY AND SALINAS. DUE TO THE TROPICAL ORIGINS
OF THIS SYSTEM THE TEMP AT MONTEREY HAS CLIMBED TO 65 DEGREES. THE
VAD WIND PROFILE FROM KMUX ID SHOWING 30 TO 40 KT WINDS JUST ABOVE
THE SURFACE. THE GRADIENT PICTURE IS INDC A VERY STRONG SOUTHERLY
GRADIENT...8.0 MB BETWEEN SFO-ARCATA...7.1 MB BETWEEN SANTA MARIA AND
SFO...AND 8.3 MB BETWEEN SANTA BARBARA AND SFO. THESE GRADIENT HAVE
BEEN STEADILY INCREASING OVER THE PAST SEVERAL HOURS.

RAIN AND WIND WILL CONTINUE TO INCREASE EARLY THIS MORNING...WITH
LOCALLY HEAVY RAIN DURING THE DAY AND INTO THE EVENING HOURS. THE
HEAVY RAIN HAS THE POTENTIAL FOR FLASH FLOODING AND LOCAL DEBRIS
FLOWS FROM THE FIRE SCAR AREAS IN SANTA CRUZ...MONTEREY...AND SAN
BENITO COUNTIES. A FLASH FLOOD WATCH CONTINUES FOR THESE AREAS
THROUGH THE EVENING HOURS (PLEASE SEE SFOFFAMTR OR WGUS66 KMTR FOR
DETAILED INFORMATION). EXPECTED RAINFALL TOTALS ARE FROM 1 TO 3
INCHES ALONG THE COAST AND IN THE VALLEYS...3 TO 6 INCHES IN THE
MOUNTAINS...AND UP TO 8 INCHES IN OROGRAPHICALLY FAVORED MOUNTAINS IN
SANTA CRUZ AND MONTEREY COUNTIES. MODELS ARE HINTING THAT THE FRONT
WILL SLOW DOWN THIS EVENING IN THE VICINITY OF SANTA CRUZ COUNTY...
WHICH COULD PROLONG THE HEAVY RAIN FROM SANTA CRUZ SOUTH.

WINDS WILL CONTINUE TO RAPIDLY INCREASE THIS MORNING AS THE GRADIENT
CONTINUES TO TIGHTEN. THE GRADIENT BETWEEN ARCATA-SANTA BARBARA IS
EXPECTED TO RAMP UP TO OVER 20 MB THIS AFTN. THIS COMBINED WITH A 55-
65 KT LLJ AT 925 MB WILL BRING STRONG GUSTY WINDS TO THE DISTRICT.
HIGH WIND WARNINGS/WIND ADVISORIES REMAIN IN EFFECT TIL 11 PM TONIGHT
(PLEASE SEE SFONPWMTR OR WWUS76 KMTR FOR DETAILED INFORMATION).

RAIN WILL TURN TO SHOWERS OVERNIGHT AS THE FRONT MAKES ITS WAY
ACROSS THE DISTRICT. AS THE SYSTEM CONTINUES TO MOVE EAST DRIER AIR
WILL MOVE INTO THE DISTRICT. MODELS DO KEEP SHOWERS IN THE FORECAST
FOR WEDNESDAY. HAVE KEPT A MENTION OF A FEW SHOWERS ON THURSDAY IN
THE NORTH BAY AS A DISTURBANCE PASSES TO THE NORTH. DRY AND WARMER
WEATHER IS IN STORE FOR THE DISTRICT THE REMAINDER OF THE WEEK AND
INTO THE WEEKEND AS A RIDGE BUILDS OVER THE COAST. A SHORTWAVE WILL
MOVE INTO THE PACIFIC NW ON SUNDAY...WITH THE NORTH BAY ON THE TAIL
END OF THE SYSTEM. HAVE MENTIONED A SLIGHT CHANCE OF SHOWERS IN THE
FCST FOR THE NORTH BAY ON SUNDAY.

&&

.AVIATION...AS OF 4:15 AM PDT TUESDAY...ADVERSE WEATHER THROUGH
TODAY. STRONG SOUTHEAST WINDS AND HEAVY RAINS AHEAD OF MID LATITUDE
SYSTEM WILL PREVAIL TODAY. A WIND SHIFT TO THE WEST LATER THIS
AFTERNOON OR EARLY EVENING IS LIKELY AS THE FRONTAL SYSTEM PUSHES
THROUGH THE AREA.

VICINITY OF KSFO...MVFR CEILINGS WITH HEAVY WINDS AND RAIN ALL DAY.
WINDS WILL STAY SOUTHEAST THROUGH THE MORNING AND INTO THE EARLY
AFTERNOON. BY 02Z WINDS SHOULD SHIFT OVER TO WEST.

KSFO BRIDGE APPROACH...SAME AS KSFO.

MONTEREY BAY TERMINALS...MVFR. STRONG WINDS AND HEAVY RAIN DEVELOPING
THIS MORNING AND CONTINUING THROUGH THE AFTERNOON.

&&

.MARINE...AS OF 4:15 AM PDT TUESDAY...GALES ARE POSTED FOR ALL WATERS
WITH EXCEPTION OF SAN FRANCISCO BAY WHERE A STORM WARNING IS POSTED.
RAPIDLY APPROACHING MID LATITUDE SYSTEM WITH REMNANTS OF AN OLD
TYPHOON WILL PUSH WINDS UP SIGNIFICANTLY TODAY. STORM FORCE GUSTS TO
60 KNOTS ARE POSSIBLE WHERE GALES ARE POSTED. HURRICANE FORCE GUSTS
TO 65 KNOTS ARE POSSIBLE OVER SAN FRANCISCO BAY.

&&

.CLIMATE...RAINFALL RECORDS FOR THE MONTH OF OCTOBER (IN INCHES)...

LOCATION                ONE DAY RECORD        TWO DAY RECORD
--------                --------------        --------------
SANTA ROSA              4.67 (10/12/1962)     7.41 (10/12-13/1962)
NAPA                    4.66 (10/13/1962)     9.32 (10/12-13/1962)
SAN FRANCISCO DOWNTOWN  2.29 (10/15/1969)     3.72 (10/12-13/1962)
SAN FRANCISCO AIRPORT   2.62 (10/13/1962)     4.56 (10/12-13/1962)
OAKLAND AIRPORT         4.53 (10/13/1962)     5.85 (10/12-13/1962)
LIVERMORE               2.17 (10/13/1962)     3.45 (10/13-14/1962)
SAN JOSE                3.22 (10/13/1962)     4.56 (10/12-13/1962)
SANTA CRUZ              3.15 (10/20/1899)     3.35 (10/20-21/1899)
MONTEREY                1.80 (10/26/1907)     2.09 (10/26-27/1907)
SALINAS                 1.50 (10/30/1982)     1.50 (10/30-31/1982)
KING CITY               1.88 (10/29/1996)     2.18 (10/29-30/1996)

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
    .TDA...GLW...ALL COASTAL WATERS AND MONTEREY BAY.
        ...STORM WARNING...SFO BAY.
        ...FFA...WITHIN AND DOWN STREAM OF FIRE SCARED AREAS IN
                 MONTEREY...SANTA CRUZ AND SAN BENITO COUNTIES.
    .THROUGH 11 PM TUESDAY...HIGH WIND WARNING ALONG THE COAST...
     BAYS...NORTHERN SALINAS VALLEY...AND MOUNTAINS.
    .THROUGH 11 PM TUESDAY...WIND ADVISORY IN THE VALLEYS.

PUBLIC FORECAST: MHS
AVIATION/MARINE: CANEPA
CLIMATE: MHS

NWS ON THE WEB AT WEATHER.GOV/SANFRANCISCO

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
417 AM PDT TUE OCT 13 2009

CAZ509-512-517-528-530-141130-
SAN FRANCISCO PENINSULA COAST-SANTA CRUZ MOUNTAINS-
SANTA LUCIA MOUNTAINS AND LOS PADRES NATIONAL FOREST-
NORTHERN SALINAS VALLEY...HOLLISTER VALLEY...AND CARMEL VALLEY-
SOUTHERN MONTEREY BAY AND BIG SUR COAST-
417 AM PDT TUE OCT 13 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SAN FRANCISCO BAY AREA AND
MONTEREY BAY AREA.

.DAY ONE...TUESDAY AND TUESDAY NIGHT

STRONG WINDS AND HEAVY RAIN WILL AFFECT THE DISTRICT TODAY INTO
THE EVENING. STORM TOTAL RAINFALL AMOUNTS COULD REACH 1 TO 3
INCHES ALONG THE COAST AND IN THE VALLEYS. IN THE HILLS...RAINFALL
AMOUNTS COULD RANGE FROM 3 TO 6 INCHES. LOCAL AMOUNTS UP TO 8
INCHES ARE POSSIBLE IN THE SANTA CRUZ AND SANTA LUCIA RANGES.
AREAS WITHIN AND DOWNSTREAM OF BURN SCARS COULD SEE FLASH FLOODING
AND DEBRIS FLOWS. THEREFORE...A FLASH FLOOD WATCH IS IN EFFECT
FROM TUESDAY MORNING THROUGH TUESDAY NIGHT FOR AREAS WITHIN AND
DOWNSTREAM OF THE BASIN...SUMMIT...GLORIA...LOCKHEED AND PACHECO
PASS FIRE SCARS.

*  FLASH FLOOD WATCH...SEE SFOFFAMTR WGUS66 KMTR FOR DETAILS  *

WINDS WILL INCREASE TO 25 TO 40 MPH ALONG THE COAST AND IN THE
HILLS. GUSTS TO 60 MPH ARE POSSIBLE. WINDS WILL DECREASE TUESDAY
NIGHT. A HIGH WIND WARNING IS IN EFFECT FROM EARLY TUESDAY MORNING
THROUGH TUESDAY NIGHT FOR THESE AREAS.

* HIGH WIND WARNING...SEE SFONPWMTR WWUS76 KMTR FOR DETAILS  *

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS PER STANDARD OPERATING PROCEDURES.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

HIGH PRESSURE WILL BUILD OVER THE AREA ON THURSDAY AND FRIDAY FOR
DRY AND WARMER CONDITIONS. ANOTHER WEAK STORM SYSTEM WILL BRUSH BY
NORTHERN CALIFORNIA OVER THE WEEKEND FOR A SLIGHT CHANCE OF RAIN.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS PER STANDARD OPERATING PROCEDURES.

CAZ006-505-507-508-511-529-141130-
SAN FRANCISCO-
COASTAL NORTH BAY...INCLUDING POINT REYES NATIONAL SEASHORE-
NORTH BAY MOUNTAINS-SAN FRANCISCO BAY SHORELINE-
EAST BAY HILLS AND DIABLO RANGE-NORTHERN MONTEREY BAY-
417 AM PDT TUE OCT 13 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SAN FRANCISCO BAY AREA AND
MONTEREY BAY AREA.

.DAY ONE...TUESDAY AND TUESDAY NIGHT

STRONG WINDS AND HEAVY RAIN WILL AFFECT THE DISTRICT TODAY INTO
THE EVENING. STORM TOTAL RAINFALL AMOUNTS COULD REACH 1 TO 3
INCHES ALONG THE COAST AND IN THE VALLEYS. IN THE HILLS...RAINFALL
AMOUNTS COULD RANGE FROM 3 TO 6 INCHES. WINDS WILL INCREASE TO 25
TO 40 MPH ALONG THE COAST...BAYS...AND IN THE HILLS. GUSTS TO 60
MPH ARE POSSIBLE IN THESE AREAS. WINDS WILL DECREASE TUESDAY
NIGHT. A HIGH WIND WARNING HAS BEEN ISSUED FOR THE ENTIRE AREA.

* HIGH WIND WARNING...SEE SFONPWMTR WWUS76 KMTR FOR DETAILS  *

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS PER STANDARD OPERATING PROCEDURES.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

HIGH PRESSURE WILL BUILD OVER THE AREA ON THURSDAY AND FRIDAY FOR
DRY AND WARMER CONDITIONS. ANOTHER WEAK STORM SYSTEM WILL BRUSH BY
NORTHERN CALIFORNIA OVER THE WEEKEND FOR A SLIGHT CHANCE OF RAIN.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS PER STANDARD OPERATING PROCEDURES.

CAZ506-510-513-516-141130-
NORTH BAY INTERIOR VALLEYS-EAST BAY INTERIOR VALLEYS-
SANTA CLARA VALLEY...INCLUDING SAN JOSE-
SOUTHERN SALINAS VALLEY...ARROYO SECO...AND LAKE SAN ANTONIO-
417 AM PDT TUE OCT 13 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SAN FRANCISCO BAY AREA AND
MONTEREY BAY AREA.

.DAY ONE...TUESDAY AND TUESDAY NIGHT

STRONG WINDS AND HEAVY RAIN WILL AFFECT THE DISTRICT TODAY INTO
THE EVENING. STORM TOTAL RAINFALL AMOUNTS COULD REACH 1 TO 3
INCHES IN THE VALLEYS. WINDS WILL INCREASE TO 20 TO 35 MPH. GUSTS
TO 45 MPH ARE POSSIBLE IN THESE AREAS. WINDS WILL DECREASE TUESDAY
NIGHT. A WIND ADVISORY HAS BEEN ISSUED FOR THE ENTIRE AREA.

* WIND ADVISORY...SEE SFONPWMTR WWUS76 KMTR FOR DETAILS *

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

HIGH PRESSURE WILL BUILD OVER THE AREA ON THURSDAY AND FRIDAY FOR
DRY AND WARMER CONDITIONS. ANOTHER WEAK STORM SYSTEM WILL BRUSH BY
NORTHERN CALIFORNIA OVER THE WEEKEND FOR A SLIGHT CHANCE OF RAIN.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS PER STANDARD OPERATING PROCEDURES.

CAZ518-141130-
MOUNTAINS OF SAN BENITO AND INTERIOR MONTEREY COUNTY INCLUDING
PINNACLES NATIONAL MONUMENT-
417 AM PDT TUE OCT 13 2009

THIS HAZARDOUS WEATHER OUTLOOK IS FOR SAN FRANCISCO BAY AREA AND
MONTEREY BAY AREA.

.DAY ONE...TUESDAY AND TUESDAY NIGHT

STRONG WINDS AND HEAVY RAIN WILL AFFECT THE DISTRICT TODAY INTO
THE EVENING. STORM TOTAL RAINFALL AMOUNTS COULD REACH 2 TO 5
INCHES. AREAS WITHIN AND DOWNSTREAM OF BURN SCARS COULD SEE FLASH
FLOODING AND DEBRIS FLOWS. THEREFORE...A FLASH FLOOD WATCH IS IN
EFFECT FROM TUESDAY MORNING THROUGH TUESDAY NIGHT FOR AREAS WITHIN
AND BELOW THE PACHECO PASS FIRE SCAR.

*  FLASH FLOOD WATCH...SEE SFOFFAMTR WGUS66 KMTR FOR DETAILS  *

WINDS WILL INCREASE TO 20 TO 35 MPH. GUSTS TO 45 MPH ARE POSSIBLE
IN THESE AREAS. WINDS WILL DECREASE TUESDAY NIGHT. A WIND ADVISORY
HAS BEEN ISSUED FOR THE ENTIRE AREA.

* WIND ADVISORY...SEE SFONPWMTR WWUS76 KMTR FOR DETAILS  *

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

HIGH PRESSURE WILL BUILD OVER THE AREA ON THURSDAY AND FRIDAY FOR
DRY AND WARMER CONDITIONS. ANOTHER WEAK STORM SYSTEM WILL BRUSH BY
NORTHERN CALIFORNIA OVER THE WEEKEND FOR A SLIGHT CHANCE OF RAIN.

.SPOTTER INFORMATION STATEMENT...

WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS PER STANDARD OPERATING PROCEDURES.

MHS

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO CA
336 AM PDT TUE OCT 13 2009

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0334 AM     NON-TSTM WND GST E WOODACRE RAWS         37.99N 122.64W
10/13/2009  M45.00 MPH       MARIN              CA   MESONET

0335 AM     NON-TSTM WND GST 12 WSW INVERNESS        38.00N 123.02W
10/13/2009  M46.00 MPH       PZZ540             CA   MESONET

&&

ANDERSON

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN FRANCISCO CA
419 AM PDT TUE OCT 13 2009

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0346 AM     NON-TSTM WND GST 7 NW LUCIA              36.07N 121.56W
10/13/2009  M52.00 MPH       MONTEREY           CA   MESONET

&&

ANDERSON