Small Craft Advisory 372, NWS San Francisco Bay Area, CA

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
1038 AM PST MON DEC 5 2011

.DISCUSSION...AS OF 9:55 AM PST MONDAY...SUNNY SKIES WITH
SEASONABLE TEMPERATURES THIS AFTERNOON FROM THE MID 50S TO MID 60S.
SHORT TERM ISSUE THEN BECOMES COLD TEMPERATURES TONIGHT WITH FROST
AND FREEZE WARNINGS ALREADY IN PLACE.

SHORT TERM...UNDER FULL SUNSHINE TEMPERATURES ARE SLOWLY CLIMBING
AFTER A CHILLY START TO THE DAY IN THE WIND PROTECTED VALLEYS.
ELSEWHERE IN THE BAY AREA BREEZY OFFSHORE WINDS IN THE HILLS KEPT
OVERNIGHT LOWS FAIRLY MILD. THE STRONGEST WINDS ARE PEAKING RIGHT
NOW IN THE EAST BAY HILLS WITH OAKLAND NORTH AND LAS TRAMPAS BOTH
REPORTING GUSTS TO 48 MPH LAST HOUR. THE OFFSHORE SFO-WMC PEAKED
AROUND 12 MB OVERNIGHT AND IS NOW AT 9.8 MB AND CONTINUING TO
DECREASE. TONIGHT THE WINDS JUST ABOVE THE BOUNDARY LAYER ARE
EXPECTED TO BE MUCH LIGHTER WHICH SHOULD PROVIDE IDEAL CONDITIONS
FOR RADIATIONAL COOLING AND A COLD NIGHT. FREEZE WARNINGS ARE
ALREADY POSTED FOR THE NORTH BAY VALLEYS AND SOUTHERN SALINAS
VALLEY WITH FROST ADVISORIES FOR THE NORTHERN SALINAS VALLEY AND
EAST BAY VALLEYS. THESE CURRENT HEADLINES LOOK PRETTY MUCH ON
TRACK BASED OFF LATEST MOS GUIDANCE AND DONT SEE ANY NEED FOR
CHANGES AT THIS TIME. MET MOS AT KSTS AND KAPC HAS 26 DEGREES
TONIGHT WITH 20 FOR KPRB (WHICH IS A GOOD PROXY FOR SOUTHERN
SALINAS VALLEY). MOS GUIDANCE HAS BEEN TOO COLD OF LATE BUT WITH
LIGHTER WINDS EXPECTED FEEL THAT MOS NUMBERS ARE PRETTY CLOSE.
WOULD LIKE TO SEE EVEN LIGHTER WINDS DEPICTED BY THE MODELS THAN
CURRENT SOLUTIONS SHOW FOR COLDER TEMPS.

DAY TO DAY CHANGES LOOK TO BE MINIMAL FOR THE UPCOMING WORK WEEK
WITH SUNNY AND MILD DAYS FOLLOWED BY MOSTLY CLEAR AND COOL TO COLD
NIGHTS. WILL HAVE TO CONSIDER MORE FROST/FREEZE HEADLINES FOR
TUESDAY NIGHT AS WELL.

NEW 12Z GFS KEEP THE MAIN RIDGE OVER THE WEST COAST THROUGH AT
LEAST THIS WEEKEND. SOME HINT OF A BREAK DOWN OF THE RIDGE BY
ABOUT NEXT WEDS. WILL CONTINUE TO MONITOR.

&&

.AVIATION...AS OF 10:00 AM PST MONDAY...CLEAR SKIES AND VFR. GUSTY
NORTH TO NORTHEAST WINDS AT SFO OAK AND STS THIS MORNING WILL
DECREASE WITHIN THE NEXT FEW HOURS. OTHERWISE MOSTLY LIGHT WINDS.

VICINITY OF KSFO...VFR. NORTHEAST WINDS TO AROUND 15 KT THIS
MORNING DECREASING MIDDAY. LIGHT WINDS OVERNIGHT.

KSFO BRIDGE APPROACH...SIMILAR TO KSFO.

MONTEREY BAY AREA TERMINALS...VFR.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
     .TDAY...NONE.

&&

PUBLIC FORECAST: RWW
AVIATION/MARINE: AC

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
223 PM PST MON DEC 5 2011

CAZ516-061300-
SOUTHERN SALINAS VALLEY...ARROYO SECO...AND LAKE SAN ANTONIO-
223 PM PST MON DEC 5 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE SOUTHERN SALINAS VALLEY

.DAY ONE...MONDAY NIGHT

AS THE SUN SETS TEMPERATURES WILL QUICKLY FALL INTO THE 20S AND
30S OVERNIGHT. A FREEZE WARNING STARTS AT 1 AM TUESDAY.

*  FREEZE WARNING......SEE SFONPWMTR WWUS76 KMTR FOR DETAILS  *

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

WIDESPREAD TEMPERATURES IN THE 20S TO LOWER 30S ARE FORECAST EARLY
TUESDAY MORNING. ANOTHER ROUND OF FREEZING TEMPERATURES IS LIKELY
TUESDAY NIGHT INTO WEDNESDAY MORNING.

*  FREEZE WARNING......SEE SFONPWMTR WWUS76 KMTR FOR DETAILS  *

.SPOTTER INFORMATION STATEMENT...

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

CAZ506-061300-
NORTH BAY INTERIOR VALLEYS-
223 PM PST MON DEC 5 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE NORTH BAY VALLEYS

.DAY ONE...MONDAY NIGHT

AS THE SUN SETS TEMPERATURES WILL QUICKLY FALL INTO THE 20S AND
30S OVERNIGHT. A FREEZE WARNING STARTS AT 1 AM TUESDAY.

*  FREEZE WARNING......SEE SFONPWMTR WWUS76 KMTR FOR DETAILS  *

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

WIDESPREAD TEMPERATURES FROM THE MID 20S TO MID 30S ARE FORECAST EARLY
TUESDAY MORNING. ANOTHER ROUND OF FREEZING TEMPERATURES IS LIKELY
TUESDAY NIGHT INTO WEDNESDAY MORNING.

*  FREEZE WARNING......SEE SFONPWMTR WWUS76 KMTR FOR DETAILS  *

.SPOTTER INFORMATION STATEMENT...

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

CAZ510-528-061300-
EAST BAY INTERIOR VALLEYS-
NORTHERN SALINAS VALLEY...HOLLISTER VALLEY...AND CARMEL VALLEY-
223 PM PST MON DEC 5 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE EAST BAY VALLEYS AS WELL
AS THE NORTHERN SALINAS VALLEY.

.DAY ONE...MONDAY NIGHT

AS THE SUN SETS TEMPERATURES WILL QUICKLY FALL INTO 30S OVERNIGHT.
A FROST ADVISORY STARTS AT 1 AM TUESDAY.

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

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

WIDESPREAD TEMPERATURES IN THE LOW TO MID 30S ARE FORECAST EARLY
TUESDAY MORNING. ANOTHER ROUND OF NEAR FREEZING TEMPERATURES IS LIKELY
TUESDAY NIGHT INTO WEDNESDAY MORNING.

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

.SPOTTER INFORMATION STATEMENT...

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

CAZ507-061300-
NORTH BAY MOUNTAINS-
223 PM PST MON DEC 5 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE NORTH BAY HILLS

.DAY ONE...MONDAY NIGHT

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

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

CAZ511-061300-
EAST BAY HILLS AND DIABLO RANGE-
223 PM PST MON DEC 5 2011

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE EAST BAY HILLS.

.DAY ONE...MONDAY NIGHT

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

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