Gale Watch 2, NWS San Francisco Bay Area, CA

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
247 AM PDT MON MAY 26 2014

.SYNOPSIS...HIGH PRESSURE WILL KEEP CLEAR AND WARM CONDITIONS OVER
THE BAY AREA THROUGH TODAY WITH UPPER 60S TO UPPER 70S AT THE
COAST AND 80S TO LOWER 90S INLAND. COOLER WEATHER WILL RETURN FOR
TUESDAY THROUGH THE WEEKEND AS TWO DRY SYSTEMS DROP SOUTHWARD
TOWARD OUR AREA.

&&

.DISCUSSION...AS OF 3:00 AM PDT MONDAY...LOOKS LIKE A GREAT
WEATHER DAY FOR THE MEMORIAL DAY HOLIDAY TODAY. OVERNIGHT THE
SATELLITE LOOP SHOWS THAT DESPITE THE 3.5 MB WESTERLY GRADIENT AT
THE SURFACE, THE NORTHERLY FLOW WELL OVER 6 MB IS KEEPING LOW
CLOUDS/STRATUS WELL OFF THE COAST. DEW POINTS ARE ALSO RUNNING
QUITE A BIT LOWER THAN CURRENT TEMPS LEADING TO LOWER RH VALUES.
THEREFORE DO NOT EXPECT ANY FOG FORMATION DURING THE MORNING
HOURS. SYNOPTICALLY A RIDGE OF HIGH PRESSURE STRETCHING FROM THE
PACIFIC THROUGH OUR CWA AND OVER INTO NEVADA WILL BEGIN TO FLATTEN
TODAY AS A SYSTEM OFF THE BC COAST MOVES TO NEAR THE WASHINGTON
BORDER BY TONIGHT. GUIDANCE CONTINUES TO BRING AN INCREASE IN
WESTERLY WINDS DURING THE AFTERNOON ALONG WITH A MINOR DROP (AROUND
2C) AT 850 MB, SO HIGHS FOR MANY SPOTS WILL RUN JUST A BIT COOLER
TODAY COMPARED TO SUNDAY. MOSTLY 60S AND 70S AT THE COAST WITH MID
70S TO UPPER 80S INLAND. A FEW LOCATIONS IN MONTEREY AND SAN
BENITO COUNTIES COULD RETURN BACK TO THE 90S TODAY.

THE SYSTEM MOVING DOWN FROM CANADA WILL CONTINUE TO PROGRESS TO
THE SOUTH LEADING TO COOLER AIR MOVING ACROSS OUR CWA WHILE THE
WESTERLY FLOW AT THE SURFACE INCREASES. IN FACT, SOME LOCATIONS
FOR THE MIDDLE OF THE WEEK COULD DROP TO SLIGHTLY COOLER THAN
NORMAL CONDITIONS. A SECONDARY SYSTEM WILL THEN DROP SOUTH ALONG
THE COAST AND MOVE CLOSE TO OUR AREA FOR NEXT WEEKEND. DEPENDING
ON THE TRACK OF THE LOW, COULD SEE ANOTHER ROUND OF FOG AND
DRIZZLE. HIGHS WILL DROP A FEW ADDITIONAL DEGREES -- UPPER 50S TO
MID 60S AT THE COAST WITH UPPER 60S TO UPPER 70S INLAND. THIS
WOULD GIVE US A COOL START TO THE START OF JUNE.

NO SIGN OF ANY ORGANIZED RAINFALL THROUGH AT LEAST THE MIDDLE OF
NEXT WEEK.

&&

.AVIATION...AS OF 11:05 PM PDT SUNDAY...HIGH PRESSURE WILL MAINTAIN
CLEAR SKIES HOWEVER A LOW PRESSURE SYSTEM TO THE NORTH IS
TIGHTENING THE GRADIENT OVER THE REGION RESULTING IN MODERATE AND
GUSTY WINDS ACROSS THE DISTRICT. THE NORTHERLY GRADIENT FROM ACV
TO SFO REMAINS STRONG AND CURRENTLY STANDS AT 6.1 MB. CLEAR SKIES WITH
MODERATE WINDS EXPECTED TO CONTINUE THROUGH THE NIGHT WITH WINDS
EXPECTED TO INCREASE AND BECOME GUSTY ONCE AGAIN MONDAY AFTERNOON.
HIGH CONFIDENCE.

VICINITY OF KSFO...VFR CONDITIONS ARE EXPECTED THROUGH THE
PERIOD. SUSTAINED WEST WINDS OF 15 TO 25 KT WITH LOCALIZED GUSTS
TO 30 KT EXPECTED OVER KSFO. WINDS OVER KOAK WILL REMAIN LIGHT
AROUND 5 KT THROUGH THE NIGHT BUT EXPECTED TO INCREASE AGAIN
MONDAY AFTERNOON.

KSFO BRIDGE APPROACH...SIMILAR TO KSFO.

MONTEREY BAY AREA TERMINALS...VFR CONDITIONS ARE EXPECTED THROUGH
THE FORECAST PERIOD. LIGHT WEST TO SOUTHWEST WINDS UNDER 10 KT
EXPECTED TO EASE OVERNIGHT THEN INCREASE MONDAY AFTERNOON. HIGH
CONFIDENCE.

&&

.MARINE...AS OF 09:23 PM PDT SUNDAY...MODERATE TO STRONG NORTHWEST
FLOW WILL CONTINUE ACROSS THE COASTAL WATERS FOR THE NEXT SEVERAL
DAYS IN RESPONSE TO A STRONG SURFACE PRESSURE GRADIENT. GUSTY
NORTHWEST WINDS WILL LIKELY PERSIST THROUGH MUCH OF THE COMING
WEEK AND WILL RESULT IN STEEP FRESH SWELL ACROSS THE WATERS. THE
SMALL CRAFT ADVISORIES ACROSS THE NORTHERN OUTER WATERS AS WELL AS
THE SOUTHERNMOST COASTAL WATERS HAS BEEN UPGRADED TO A GALE
WARNING DUE TO FREQUENT GALE FORCE GUSTS NEAR 40 KT. THE WARNING
WILL CONTINUE UNTIL 10Z (3 AM) MONDAY.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
     .TDAY...SCA...PT ARENA TO PT REYES 0-10 NM
             SCA...PT REYES TO PIGEON PT 0-10 NM
             SCA...PIGEON PT TO PT PINOS 0-10 NM
             SCA...PT REYES TO PIGEON PT 10-60 NM
             SCA...PIGEON PT TO PT PINOS 10-60 NM
             SCA...PT PINOS TO PT PIEDRAS BLANCAS 0-10 NM
             SCA...PT ARENA TO PT REYES 10-60 NM
             SCA...PT PINOS TO PT PIEDRAS BLANCAS 10-60 NM
             GLW...PT PINOS TO PT PIEDRAS BLANCAS 0-10 NM UNTIL 3 AM
             GLW...PT ARENA TO PT REYES 10-60 NM UNTIL 3 AM
             GLW...PT PINOS TO PT PIEDRAS BLANCAS 10-60 NM UNTIL 3 AM
             SCA...ROUGH BAR ADVISORY FOR SF BAR
             SCA...MONTEREY BAY FROM NOON
             SCA...SF BAY NORTH OF THE BAY BRIDGE UNTIL 3 AM
             SCA...SF BAY SOUTH OF THE BAY BRIDGE UNTIL 3 AM
             SCA...SF BAY NORTH OF THE BAY BRIDGE FROM NOON
             SCA...SF BAY SOUTH OF THE BAY BRIDGE FROM NOON

&&

PUBLIC FORECAST: BELL
AVIATION/MARINE: CW

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