Alert archive / California / Special Marine Warnings in 2012

Special Marine Warning 9, NWS San Francisco Bay Area, CA

December 29, 2012

NWS San Francisco Bay Area, CA issued this special marine warning at Dec 29, 2012, 10:12 AM PST. It was in force for 33 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Dec 29, 2012, 10:12 AM PST (18:12 UTC)
Expired
Dec 29, 2012, 10:45 AM PST
In force
33 min
Issued by
NWS San Francisco Bay Area, CA
Area
Storm-based polygon

What forecasters said that day

The local office's own words before this special marine warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS San Francisco Bay Area, CA wrote its last area forecast discussion before this special marine warning went out at Dec 29, 9:04 AM PST, 1 hour 8 minutes earlier.

Area forecast discussion, Dec 29, 9:04 AM PST, 1 hour 8 minutes before
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Hazardous weather outlook, Dec 29, 4:36 AM PST, 5 hours 36 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
436 AM PST SAT DEC 29 2012

CAZ006-505-509-529-530-301400-
SAN FRANCISCO-
COASTAL NORTH BAY...INCLUDING POINT REYES NATIONAL SEASHORE-
SAN FRANCISCO PENINSULA COAST-NORTHERN MONTEREY BAY-
SOUTHERN MONTEREY BAY AND BIG SUR COAST-
436 AM PST SAT DEC 29 2012

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

.DAY ONE...SATURDAY AND SATURDAY NIGHT

LONG PERIOD NORTHWEST SWELL WILL IMPACT THE COAST THROUGH
SATURDAY NIGHT. A HIGH SURF ADVISORY IS IN EFFECT.

*  HIGH SURF ADVISORY....SEE SFOCFWMTR WHUS46 KMTR FOR DETAILS  *

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

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

CAZ511-512-517-518-301400-
EAST BAY HILLS AND DIABLO RANGE-SANTA CRUZ MOUNTAINS-
SANTA LUCIA MOUNTAINS AND LOS PADRES NATIONAL FOREST-
MOUNTAINS OF SAN BENITO AND INTERIOR MONTEREY COUNTY INCLUDING
PINNACLES NATIONAL MONUMENT-
436 AM PST SAT DEC 29 2012

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

.DAY ONE...SATURDAY AND SATURDAY NIGHT

SNOW LEVELS REMAIN AROUND 3500 FEET ACROSS THE SAN FRANCISCO
BAY AREA AND 3500 TO 4000 FEET ACROSS THE MONTEREY BAY AREA
TODAY. LOCALLY SNOW OR RAIN SNOW MIX MAY FALL AS LOW AS 3000 FEET.
SNOW WILL CONTINUE AT TIMES AT THESE ELEVATIONS THROUGH NOON. UP
TO TWO TO THREE INCHES OF TOTAL ACCUMULATION ARE POSSIBLE ABOVE
3000 FEET AND AND UP TO FOUR INCHES AT THE HIGHEST ELEVATIONS IN
THE SANTA LUCIA MOUNTAINS OF MONTEREY COUNTY.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

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

CAZ506-510-513-516-528-301400-
NORTH BAY INTERIOR VALLEYS-EAST BAY INTERIOR VALLEYS-
SANTA CLARA VALLEY...INCLUDING SAN JOSE-
SOUTHERN SALINAS VALLEY...ARROYO SECO...AND LAKE SAN ANTONIO-
NORTHERN SALINAS VALLEY...HOLLISTER VALLEY...AND CARMEL VALLEY-
436 AM PST SAT DEC 29 2012

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

.DAY ONE...SATURDAY AND SATURDAY NIGHT

LIGHT RAIN ENDS FROM NORTH TO SOUTH SATURDAY. SKIES CLEAR SATURDAY NIGHT.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

CLEARING SKIES COMBINED WITH A COLD AIRMASS AND LIGHT WINDS WILL
RESULT IN PATCHY FROST IN NORTH AND EAST BAY VALLEYS SUNDAY
MORNING. TEMPERATURES WILL LIKELY BE COLDER SUNDAY NIGHT...WITH
PATCHY FROST POSSIBLE IN ALL INLAND VALLEYS LATE SUNDAY NIGHT INTO
EARLY MONDAY MORNING.

.SPOTTER INFORMATION STATEMENT...

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

The office that day

Everything else NWS San Francisco Bay Area, CA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Dec 29, 9:46 AM PSTSpecial Marine WarningMTR29 min
Dec 29, 2:27 PM PSTSmall Craft AdvisoryMTR19 hr

Nearby

Special Marine Warnings in California, 2012Every special marine warning in 2012

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text.