000
FXUS66 KMTR 080539
AFDMTR

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA CA
940 PM PST SAT NOV 7 2009

.DISCUSSION...AS OF 8:38 PM PST SATURDAY...ACCORDING TO THE LATEST
WATER VAPOUR SATELLITE IMAGE THE FORECAST AREA WILL BE BENEATH COOL
NORTHWEST FLOW TONIGHT. THE IR SATELLITE IMAGE IS SHOWING CLEAR
SKIES AND LOCAL OBSERVATIONS ARE DEPICTING DEWPOINTS BETWEEN 4 TO 8
DEGREES CELSIUS. THESE CONDITIONS WILL RESULT IN A CHILLY EVENING
WITH NO FOG EXPECTED OTHER THAN IN THE NORTHBAY VALLEYS. ALTHOUGH
CHILLY DEWPOINTS AND WINDS ARE HIGH ENOUGH TO KEEP FROST OUT OF THE
AREA WITH OVERNIGHT TEMPERATURES EXPECTED TO BE IN THE LOW TO MID
40S INLAND AND THE LOW TO MID 50S ALONG THE COAST.

SUNDAY SHOULD BE A REPEAT OF TODAY WITH MOSTLY CLEAR SKIES AND
TEMPERATURES IN THE MID 60S TO LOW 70S. CLOUDS AND ONSHORE
WINDS WILL INCREASE MONDAY NIGHT AS A TROUGH OF LOW PRESSURE
APPROACHES THE FORECAST AREA. THIS TROUGH WILL BRING A CHANCE OF
RAIN TO THE NORTHBAY MONDAY NIGHT WITH A SLIGHT CHANCE OF SHOWERS
SPREADING SOUTH TUESDAY AND WEDNESDAY.

A HIGH SURF ADVISORY REMAINS IN EFFECT FOR THE CENTRAL COAST THROUGH
4PM SUNDAY AFTERNOON. NORTHWEST SWELLS MADE IT TO 20 TO 22 FEET TODAY
PROVIDING SOME IMPRESSIVE SURF AND MINOR BEACH EROSION ALONG THE
CALIFORNIA COAST. SWELLS ARE BEGINNING TO SUBSIDE WITH THE LATEST
OBSERVATION FOR BUOY 13...LOCATED OFF OF BODEGA BAY...REPORTING 15
FEET AT 17 SECONDS. HOWEVER...BUOY 42...LOCATED OFF OF MONTEREY BAY
IS STILL REPORTING 19 FEET AT 17 SECONDS. THESE LARGE WAVES ARE
CAPABLE OF PRODUCING LARGE DANGEROUS BREAKING WAVES IN THE SURF
ZONE AS WELL AS STRONG RIP CURRENTS.


&&

.AVIATION...AS OF 9:40 PM PST SATURDAY...VFR FORECAST OVERNIGHT WITH
STRONGER NORTHERLY GRADIENTS AND A DRY AIRMASS. WINDS AT THE
SURFACE WILL REMAIN LIGHT. EXPECT VFR ALL DAY SUNDAY AT THE BAY AREA
TERMINALS.

VICINITY OF KSFO...VFR OVERNIGHT THROUGH SUNDAY WITH LIGHT WINDS FOR
THE NEXT 24 HOURS.

KSFO BRIDGE APPROACH...VFR CONDITIONS THROUGH SUNDAY. SIMILAR TO SFO.

MONTEREY BAY TERMINALS...VFR FORECAST OVERNIGHT. TEMPO GROUPS PUT IN
FOR CHANCE OF LOCALIZED CIGS NEAR KMRY AROUND SUNRISE ALTHOUGH
BELIEVE THIS IS LOW PROBABILITY.

&&

.MARINE...AS OF 9:40 PM PST SATURDAY...HIGH SURF ADVISORY CONTINUES
THROUGH SUNDAY AFTERNOON. AS OF 9 PM COASTAL BUOYS REPORTING SEA
HEIGHTS FROM 16 TO 21 FEET. LARGE SWELLS TO SLOWLY SUBSIDE OVER THE
NEXT 18 HOURS. NEXT TIDAL CYCLE BRINGS A 4.8 FOOT HIGH TIDE TO THE
GOLDEN GATE AT 4:40 AM SUNDAY MORNING.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
    .TNGT...SCA FOR WINDS AND SEAS...PT. ARENA TO PT. PIEDRAS
            BLANCAS
         ...SCA FOR HAZARDOUS SEAS...MRY BAY
         ...ROUGH BAR FOR SAN FRANCISCO BAR
    .THRU SUN AFTERNOON...HIGH SURF ADVISORY...SONOMA COAST SOUTH
           THROUGH THE MONTEREY COUNTY COAST.

$$

PUBLIC FORECAST: LARRY
AVIATION/MARINE: RWW

NWS ON THE WEB AT WEATHER.GOV/SANFRANCISCO