FXUS66 KMTR 291722
AFDMTR

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA CA
915 AM PST SUN NOV 29 2009

.DISCUSSION...AS OF 8:45 AM PST SUNDAY...SUNNY SKIES ARE THE RULE
ACROSS THE DISTRICT THIS MORNING WITH STRONG HIGH PRESSURE CENTERED
OVER THE GREAT BASIN. OFFSHORE FLOW CONTINUES WITH GUSTY WINDS MAINLY
IN THE HILLS. WINDS HAVE ALSO BEEN GUSTY IN THE NORTH BAY VALLEYS...
WITH SANTA ROSA GUSTING TO 22 MPH. THESE DOWN-SLOPE WINDS HAVE KEPT
TEMPS VERY MILD...WITH TEMPS IN THE LOWER 60S IN THE NORTH BAY
VALLEYS. THERE IS A WIDE VARIETY OF TEMPS ACROSS THE DISTRICT WITH
50S TO LOWER 60S COMMONPLACE...WITH 30S AND 40S IN THE WIND PROTECTED
VALLEYS.

EVEN THOUGH TEMPS ARE NOT ALL THAT FAR FROM THE FCST HIGHS TODAY
WILL NOT MAKE ANY UPDATES. WITH THE ATMOSPHERE ALREADY WELL-MIXED
TEMPS SHOULD NOT INCREASE MUCH ABOVE THE CURRENT TEMPS. EVEN THOUGH
THE WINDS ARE GUSTY IN THE HILLS...THEY HAVE DROPPED BELOW ADVISORY
LEVELS. THE WIND ADVISORY IN THE NORTH AND EAST BAY HILLS WILL BE
ALLOWED TO EXPIRE AT 10 AM.

THE 12Z GFS CONTINUES TO KEEP THE DISTRICT DRY THROUGH THE WEEK.
RIDGING CONTINUES ALONG THE COAST THROUGH THE WEEK AS THE GFS DEEPENS
THE HUDSON BAY LOW. THIS PATTERN REMAINS VERY AMPLIFIED...AND
PREVIOUS MODEL RUNS HAVE BEEN ALL OVER THE BOARD. THE 00Z GFS
ENSEMBLES HAVE ALSO SUPPORTED A WIDE VARIETY OF SOLUTIONS. WILL WAIT
TO SEE THE 12Z ECMWF BEFORE MAKING ANY CHANGES TO THE FORECAST.

&&

.AVIATION...AS OF 9:15 AM PST SUNDAY...STRONG HIGH PRESSURE WITH
CLEAR SKIES NEXT 24 HOURS. STRONG NORTH WINDS WILL CONTINUE TO
DECREASE THROUGH MIDDAY AND INTO THE AFTERNOON.

VICINITY OF KSFO...VFR SKY NEXT 24 HOURS. LIGHT WINDS THRU THE
PERIOD UNDER 10 KTS.

KSFO BRIDGE APPROACH...SAME AS KSFO...SPEED SHEAR ALOFT WILL
DECREASE THROUGH THIS AFTERNOON.

MRY BAY AREA TERMINALS...VFR CONDITIONS. NORTHEAST TO EAST
WINDS 5-10 KT DURING THE MORNING BECOMING NORTH TO NORTHWEST IN THE
AFTERNOON.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
    .TDA...NONE

$$

PUBLIC FORECAST: MHS
AVIATION/MARINE: RWW

NWS ON THE WEB AT WEATHER.GOV/SANFRANCISCO