Area Forecast Discussion
Issued by NWS San Francisco Bay Area, CA

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000
FXUS66 KMTR 042140
AFDMTR

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
240 PM PDT FRI SEP 4 2015

.SYNOPSIS...A WARMING TREND IS EXPECTED TO BEGIN OVER THE WEEKEND
AND CONTINUE INTO NEXT WEEK AS HIGH PRESSURE BUILDS INLAND AND LOW
LEVEL WINDS TURN OFFSHORE. DRY CONDITIONS WILL CONTINUE THROUGH
NEXT WEEK.

&&

.DISCUSSION...AS OF 2:40 PM PDT FRIDAY...TEMPERATURES ARE
GENERALLY RUNNING COOLER THAN YESTERDAY AT THIS TIME WITH READINGS
RANGING FROM THE MID 60S TO THE LOWER 80S. SURFACE PRESSURE
GRADIENTS HAVE RAMPED UP ONSHORE WITH 2.3 MB FROM SFO TO SAC...AND
7.1 MB FROM SFO TO WMC. NORTHWEST WINDS HAVE PICKED UP OVER THE
COASTAL WATERS AND ALONG THE IMMEDIATE COAST...WITH GUSTS IN THE
20-30 MPH RANGE. EXPECT ONLY PATCHY LOW CLOUDS FORMING OVERNIGHT
MAINLY NEAR THE OCEAN OR ALONG NORTH-FACING POINTS ALONG THE COAST
SUCH AS POINT REYES...PIGEON POINT...THE MONTEREY PENINSULA AND
POINT SUR.

THE UPPER TROUGH AXIS CONTINUES TO EDGE EASTWARD...APPROACHING
NEVADA. HIGH PRESSURE ALOFT WILL BEGIN MOVING IN TOWARDS
CALIFORNIA FROM THE EASTERN PACIFIC. THIS WILL BRING IN WARMER
TEMPERATURES TO THE DISTRICT BEGINNING SATURDAY AND CONTINUING
THROUGH EARLY NEXT WEEK. EXPECT HIGH TEMPERATURES BY SUNDAY AND
MONDAY TO BE FROM 5-15 DEGREES WARMER THAN TODAY`S HIGHS WITH 70S
AND 80S...AND SOME 90S IN THE WARMEST INLAND LOCATIONS. THERE WILL
ALSO BE EPISODES OF OFFSHORE BREEZES AS THE SURFACE PRESSURE
GRADIENTS BECOME MORE NORTHERLY. WARM AND DRY WEATHER IS EXPECTED
THROUGH NEXT WEEK.

&&

.AVIATION...AS OF 11:45 AM PDT FRIDAY...WIDESPREAD VFR TODAY WITH
GUSTY ONSHORE WINDS. SUSTAINED WINDS IN EXCESS OF 20 KTS POSBL
WITH GUSTS IN EXCESS OF 30 KTS POSBL THROUGH THE AFTERNOON AND
EARLY EVENING ALONG THE COAST. MARINE LAYER WILL STRUGGLE THIS
EVENING ... LEADING TO WIDESPREAD VFR WITH LOCALLY MVFR CIGS THIS
EVENING. BEST CHANCE OF MVR CIGS WILL COME AT OR BEFORE SUNRISE.

VICINITY OF KSFO...VFR. ONSHORE WEST WINDS 20 KT SUST 30 KT GUST.
SKC/FEW/SCT CLOUDS FOR MOST THE NIGHT... BRIEF BKN POSBL NEAR
SUNRISE.

KSFO BRIDGE APPROACH...SIMILAR TO KSFO.

MONTEREY BAY AREA TERMINALS... VFR TODAY WITH MODERATE ONSHORE
WINDS. MVFR POSBL LATE TONIGHT INTO EARLY TOMORROW.

&&

.MARINE...AS OF 9:21 PM PDT FRIDAY...GUSTY NORTHWEST WINDS WILL
CONTINUE OVER THE COASTAL WATERS TODAY AND THROUGH SATURDAY
MORNING AS AN UPPER LEVEL TROUGH DEEPENS ALONG THE WEST COAST.
WIND SPEEDS WILL THEN GRADUALLY DIMINISH THROUGH THE WEEKEND. A
LONG PERIOD SOUTHERLY SWELL IS FORECAST TO MOVE INTO THE COASTAL
WATERS THIS WEEKEND.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
     .TNGT...SCA...PIGEON PT TO PT PINOS 0-10 NM
             SCA...PT PINOS TO PT PIEDRAS BLANCAS 0-10 NM
             SCA...PT ARENA TO PIGEON PT 10-60 NM
             SCA...PIGEON PT TO PT PIEDRAS BLANCAS 10-60 NM
             SCA...PT ARENA TO PT REYES 0-10 NM
             SCA...PT REYES TO PIGEON PT 0-10 NM
             SCA...SF BAY UNTIL 11 PM
             SCA...MRY BAY UNTIL 11 PM

&&

$$

PUBLIC FORECAST: SIMS
AVIATION: DRP
MARINE: DRP


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