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

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000
FXUS66 KMTR 041838
AFDMTR

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
1138 AM PDT FRI SEP 4 2015

.SYNOPSIS...TEMPERATURES WILL REMAIN COOLER THAN NORMAL TODAY AS
AN UPPER LEVEL TROUGH CONTINUES OVER THE WEST COAST...ALONG WITH
ONSHORE FLOW AT THE SURFACE. A WARMING TREND IS THEN 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 9:06 AM PDT FRIDAY...CONDITIONS ARE MOSTLY
CLEAR OVER THE DISTRICT THIS MORNING WITH SATELLITE IMAGERY
SHOWING ONLY A FEW CLOUDS OVER THE NORTHERN SALINAS VALLEY AND
AROUND HOLLISTER. 24 HOUR TEMPERATURE TRENDS ARE COOLER ACROSS THE
BOARD WITH READINGS RANGING FROM THE UPPER 40S TO AROUND 60. THE
UPPER LEVEL TROUGH IS CURRENTLY MOVING ACROSS NORTHERN CALIFORNIA.
THIS...PLUS THE COOL START THIS MORNING...WILL KEEP HIGHS TODAY
WELL BELOW NORMAL. HIGHS ARE FORECAST TO BE IN THE 60S AND
70S...MAYBE SOME 80S IN THE WARMEST INLAND AREAS.

A WARMING TREND IS EXPECTED TO BEGIN ON SATURDAY AND WILL CONTINUE
THROUGH EARLY NEXT WEEK AS HIGH PRESSURE ALOFT REPLACES THE UPPER
TROUGH OVER CALIFORNIA. IN ADDITION...WEAK OFFSHORE FLOW IS
EXPECTED SUNDAY AND MONDAY MORNINGS...ESPECIALLY OVER THE NORTH
AND EAST BAY HILLS. AT THIS TIME...WIND SPEEDS TO NOT LOOK TO BE
STRONG ENOUGH TO WARRANT ADVISORIES.

HIGH TEMPERATURES ARE FORECAST TO WARM 5 TO 15 DEGREES BY SUNDAY
AND MONDAY BEFORE LEVELING OFF BY MIDWEEK. NO RAIN IS EXPECTED
THROUGH THE PERIOD.

&&

.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 11:15 AM 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...
     .TDAY...SCA...PIGEON PT TO PT PINOS 0-10 NM FROM 2 PM
             SCA...PT PINOS TO PT PIEDRAS BLANCAS 0-10 NM FROM 2 PM
             SCA...PT ARENA TO PT REYES 0-10 NM
             SCA...PT REYES TO PIGEON PT 0-10 NM
             SCA...PT ARENA TO PIGEON PT 10-60 NM
             SCA...PIGEON PT TO PT PIEDRAS BLANCAS 10-60 NM
             SCA...SF BAY FROM 2 PM
             SCA...MRY BAY FROM 2 PM

&&

$$

PUBLIC FORECAST: SIMS
AVIATION: DRP
MARINE: DRP


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