416 
FXUS66 KMTR 070245
AFDMTR

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA CA
745 PM PDT MON OCT 6 2008

.DISCUSSION...AS OF 7:45 PM PDT MONDAY...THE FORECAST WAS RECENTLY
AMENDED TO REFLECT PATCHES/AREAS OF COASTAL FOG DEVELOPING. HIGHER
HUMIDITIES CAUGHT BENEATH STRENGTHENING MARINE INVERSIONS HAS LED TO
FOG DEVELOPMENT.

HIGHS TODAY WERE WARMER THAN ON SUNDAY GENERALLY BY 5 TO 10 DEGREES
ACROSS THE AREA. HIGHER HUMIDITIES WILL HELP HOLD TEMPERATURES IN THE
MID TO UPPER 50S TONIGHT...BUT ABOVE THE MARINE AIRMASS IN THE
COASTAL HILLS AND MOUNTAINS EVEN WARMER READINGS CAN BE EXPECTED.
A NORTHERLY PRESSURE GRADIENT WILL DEVELOP MORE SO TUESDAY AFTERNOON
AND EVENING. THE STRENGTH OF THE NORTHERLY GRADIENT WOULD CAUSE
INCREASED NORTHERLY SURFACE WINDS AND CLEAR OUT LOW CLOUDS AND FOG
TUESDAY AFTERNOON AND NIGHT. A LARGE UPPER LOW DEVELOPING OVER NEVADA
THIS WEEKEND WILL PROBABLY KEEP THE MARINE AIRMASS MIXED OUT AND THE
COVERAGE OF LOW CLOUDS AND FOG TO A MINIMUM.

NO OTHER UPDATES ARE EXPECTED TONIGHT.

&&

.AVIATION...AS OF 5:15 PM PDT MONDAY...SATELLITE IMAGERY REVEALS
WIDESPREAD STRATUS ALONG THE COAST AT THIS HOUR. AN INCREASING
NORTHERLY GRADIENT WILL WILL KEEP STRATUS FROM PENETRATING VERY FAR
INLAND OVERNIGHT. IN FACT LOW CLOUDS WILL MOVE IN OVER KSTS...KSFO...
KOAK AND KMRY WELL AFTER MIDNIGHT. KSJC AND KSNS ARE EXPECTED TO
REMAIN CLEAR THROUGH TONIGHT. KMRY MAY SEE A TEMPORARY CEILING
DEVELOP LATER THIS EVENING THAT IS EXPECTED TO DISSIPATE THEN REFORM
OVERNIGHT. CLEARING IS ANTICIPATED AROUND 18Z TUESDAY ACROSS
AREA TERMINALS. WINDS WILL BE LIGHT TONIGHT WITH AN SEABREEZE
EXPECTED TO KICK IN TUESDAY DURING THE AFTERNOON AND EVENING HOURS.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
       .TNGT...SCA...PT.ARENA TO PT.PIEDRAS BLANCAS 0-60NM
$$

PUBLIC FORECAST: CANEPA
AVIATION/MARINE: CW


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