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

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000
FXUS66 KMTR 282300
AFDMTR

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
300 PM PST WED JAN 28 2015

.SYNOPSIS...DRY CONDITIONS ARE EXPECTED TO CONTINUE THROUGH SUNDAY
MORNING...WITH CHANCES OF SOME LIGHT RAIN THEN DEVELOPING OVER
NORTHERN CALIFORNIA BEGINNING SUNDAY AFTERNOON AND EVENING...AND
CONTINUING INTO THE FIRST PART OF NEXT WEEK. BY MIDWEEK DRY
CONDITIONS ARE AGAIN PROJECTED TO PREVAIL ACROSS THE AREA.
TEMPERATURES WILL GENERALLY REMAIN ABOVE SEASONAL NORMS...WARMEST
ON SATURDAY.

&&

.DISCUSSION...AS OF 2:40 PM PST WEDNESDAY...CURRENT TEMPERATURES
ARE RUNNING MORE OR LESS LIKE THOSE FROM YESTERDAY AT THIS TIME
WITH MOST AREAS REPORTING TEMPERATURES RANGING FROM THE UPPER 50S
TO THE UPPER 60S. SATELLITE IMAGERY SHOWS MOSTLY CLEAR SKIES
ACROSS THE NORTHERN HALF OF THE STATE WITH COPIOUS AMOUNTS OF MID
AND HIGH CLOUDS SPREADING ACROSS THE SOUTHERN PORTION OF THE
STATE. THESE CLOUDS ARE ASSOCIATED WITH AN UPPER LEVEL DISTURBANCE
THAT IS CURRENTLY LOCATED WEST OF BAJA CALIFORNIA...AND SLATED TO
SPREAD RAINFALL INTO ARIZONA DURING THE WEEKEND.

MEANWHILE...DRY CONDITIONS ARE EXPECTED TO PERSIST HERE WITH
POSSIBLY AN INCREASE IN INLAND VALLEY FOG TONIGHT...MAINLY NORTH
BAY AND SOUTHERN SALINAS VALLEY. BUILDING HIGH PRESSURE ALOFT
ALONG WITH OFFSHORE FLOW ACROSS CENTRAL CALIFORNIA WILL ALLOW
DAYTIME TEMPERATURES TO WARM THIS WEEKEND. A WEAK SYSTEM PROGGED
TO BRUSH ACROSS NORTHERN CALIFORNIA EARLY NEXT WEEK COULD BRING
RAIN CHANCES AS FAR SOUTH AS THE NORTH BAY ZONES LATE SUNDAY INTO
MONDAY. LATEST MODEL RUNS HAVE BACKED OFF ON THIS SCENARIO...SO
RAINFALL ACROSS OUR CWA IS LOOKING LESS LIKELY. THE LATEST 8-14
DAY PRECIPITATION OUTLOOK ISSUED BY THE CLIMATE PREDICTION CENTER
NOW PAINTS AN ABOVE-NORMAL CHANCE OF RAIN ACROSS EXTREME
CALIFORNIA FOR THE PERIOD FEB 5-11. HOWEVER...THE SAN FRANCISCO BAY
AREA FALLS UNDER THE "EQUAL CHANCES" SWATH.

&&

.AVIATION...AS OF 3:00 PM PST WEDNESDAY... VFR WITH LIGHT WINDS
THROUGH TONIGHT. A FEW TO SCT HIGH CLOUDS...OCCASIONALLY BKN... WILL
LINGER OVER THE AREA THROUGH THE NEXT 18 HOURS AS HIGH LEVEL
MOISTURE ADVECTS INTO THE REGION. PATCHY FOG EXPECTED IN THE NORTH
BAY INTERIOR VALLEYS TOMORROW MORNING WITH A LOW PROBABILITY OF
SOME LOW CLOUDS IN THE EAST BAY INTERIOR AND IMMEDIATE SF BAY
AREA. BR/HZ WILL SLIGHTLY REDUCE VISIBILITIES TO 5-6SM TOMORROW
MORNING.

VICINITY OF KSFO...VFR WITH LIGHT WINDS TONIGHT.

KSFO BRIDGE APPROACH...SIMILAR TO KSFO.

MONTEREY BAY AREA TERMINALS...VFR.


&&

.MARINE...AS OF 02:57 PM PST WEDNESDAY...LIGHT WINDS WILL PERSIST
OVER THE COASTAL WATERS THROUGH THE REST OF THE DAY. NORTH WINDS
ARE EXPECTED TO GRADUALLY INCREASE TONIGHT AND THROUGH TOMORROW.
WINDS WILL PEAK BEGINNING LATE THURSDAY AND LASTING INTO MIDDAY
SATURDAY AND BE STRONGEST OVER THE OUTER WATERS WITH LOW END SMALL
CRAFT ADVISORY CRITERIA WINDS EXPECTED. A LONG PERIOD NORTHWEST
SWELL TRAIN WILL ENTER THE COASTAL WATERS TOMORROW.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
     .TNGT...NONE.

&&

$$

PUBLIC FORECAST: SIMS
AVIATION/MARINE: DRP

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