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

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000
FXUS66 KMTR 191623
AFDMTR

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
923 AM PDT FRI SEP 19 2014

.SYNOPSIS...SUNNY SKIES AND LESS HUMID CONDITIONS ARE EXPECTED
TODAY. PLEASANT WEATHER IS ANTICIPATED THROUGH THE WEEKEND. A
PACIFIC STORM SYSTEM WILL BRING A POSSIBILITY OF PRECIPITATION TO
THE FORECAST AREA MID WEEK.

&&

.DISCUSSION...AS OF 9:22 AM PDT FRIDAY...SKIES ARE CLEARING OUT
QUICKLY TODAY AS YESTERDAYS STORM SYSTEM PUSHES SOUTH OF THE AREA.
AS THE STORM SYSTEM SLIDES SOUTH LIGHT NORTH NORTHEASTERLY WINDS
WILL FILL IN OVER THE AREA ADVECTING DRIER AIR INTO THE CENTRAL
COAST. THIS WILL RESULT IN PLEASANT WEATHER THROUGH THE WEEKEND.

THE 0000Z ECMWF AND 1200Z GFS40 HAVE INITIALIZED WELL WITH THE
CURRENT SYNOPTIC PATTERN. BOTH MODELS ALLOW YESTERDAYS STORM
SYSTEM...LOW PRESSURE SYSTEM...TO LINGER OVER SOUTHERN CALIFORNIA
THROUGH TOMORROW PROMOTING PLEASANT WEATHER FOR THE CENTRAL COAST.
THE LOW PUSHES OFF INTO NEVADA SUNDAY AS A TROUGH OF LOW PRESSURE
APPROACHES THE WEST COAST.

BOTH MODELS ARE IN GOOD AGREEMENT WITH THIS APPROACHING TROUGH AND
A DEEPENING LOW OFF OF THE BC COAST. THIS DEEPENING LOW WILL BRING
THE POTENTIAL FOR ANOTHER ROUND OF RAIN MID WEEK AND COOLER
TEMPERATURES. THE CURRENT FORECAST PACKAGE DOES A GOOD JOB
DEPICTING THIS WEATHER SCENARIO SO NO UPDATES ARE NEEDED AT THIS
TIME.

&&

.AVIATION...AS OF 5:05 AM PDT FRIDAY...A MOIST BOUNDARY LAYER HAS
RESULTED IN AREAS OF LOW CLOUDS ACROSS AREA TERMINALS. PATCHY
DENSE FOG AND LIFR/VLIFR CONDITIONS ARE CURRENTLY BEING REPORTED
OVER THE NORTH BAY WHILE IFR TO MVFR CIGS ARE BEING OBSERVED
ACROSS OTHER AREA TERMINALS. CLEARING ANTICIPATED BETWEEN 16Z-17Z
THIS MORNING. LIGHT WINDS WILL CONTINUE THROUGH MIDDAY WITH A
MODERATE SEA BREEZE KICKING IN DURING THE AFTERNOON.

VICINITY OF KSFO...IFR CEILINGS ARE EXPECTED TO CLEAR BETWEEN
16Z-17Z THIS MORNING. LIGHT WINDS INCREASING THIS AFTERNOON WITH
THE ONSET OF THE SEA BREEZE.

KSFO BRIDGE APPROACH...SIMILAR TO KSFO.

MONTEREY BAY AREA TERMINALS...MVFR CEILINGS ARE EXPECTED TO CLEAR
BETWEEN 17Z-19Z THIS MORNING. LIGHT WINDS INCREASING THIS
AFTERNOON WITH THE ONSET OF THE SEA BREEZE.

&&

.MARINE...AS OF 2:38 AM PDT FRIDAY...LIGHT WINDS WILL TURN ONSHORE
AND STRENGTHEN LATER THIS MORNING AS HIGH PRESSURE BEGINS TO BUILD
OVER THE REGION. A MODERATE LONG PERIOD SOUTHWESTERLY SWELL WILL
CONTINUE TO IMPACT THE WATERS THROUGH THIS AFTERNOON BUT IS
EXPECTED TO SLOWLY SUBSIDE OVER THE NEXT 24 HOURS.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
     .TDAY...SCA...SF BAY NORTH OF THE BAY BRIDGE FROM 1 PM

&&

$$

PUBLIC FORECAST: LARRY
AVIATION/MARINE: CW

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