Small Craft Advisory 325, NWS San Francisco Bay Area, CA

501 
WHUS76 KMTR 051352
MWWMTR

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
652 AM PDT MON SEP 5 2011

PZZ530-052200-
/O.EXT.KMTR.SC.Y.0325.110905T1352Z-110906T0400Z/
SAN FRANCISCO/SAN PABLO/SUISUN BAYS AND THE WEST DELTA-
652 AM PDT MON SEP 5 2011

...SMALL CRAFT ADVISORY NOW IN EFFECT UNTIL 9 PM PDT THIS
EVENING...

THE SMALL CRAFT ADVISORY IS NOW IN EFFECT UNTIL 9 PM PDT THIS
EVENING. 

* WINDS: W TO SW WINDS 15 TO 25 KNOTS THROUGH TONIGHT. STRONGEST
  WINDS WILL BE NORTH OF THE BAY BRIDGE INCLUDING THE WEST DELTA
  AND THE CARQUINEZ STRAIT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WIND SPEEDS OF 21 TO 33 KNOTS
ARE EXPECTED TO PRODUCE HAZARDOUS WAVE CONDITIONS TO SMALL CRAFT.
INEXPERIENCED MARINERS... ESPECIALLY THOSE OPERATING SMALLER
VESSELS SHOULD AVOID NAVIGATING IN THESE CONDITIONS.

&&

$$


HTTP://WWW.WEATHER.GOV/SANFRANCISCO

511 
WHUS76 KMTR 051535
MWWMTR

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
835 AM PDT MON SEP 5 2011

PZZ530-052345-
/O.CON.KMTR.SC.Y.0325.000000T0000Z-110906T0400Z/
SAN FRANCISCO/SAN PABLO/SUISUN BAYS AND THE WEST DELTA-
835 AM PDT MON SEP 5 2011

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 PM PDT THIS
EVENING...

A SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 PM PDT THIS
EVENING. 

* WINDS: W TO SW WINDS 15 TO 25 KNOTS THROUGH TONIGHT. STRONGEST 
  WINDS WILL BE NORTH OF THE BAY BRIDGE INCLUDING THE WEST DELTA 
  AND THE CARQUINEZ STRAIT. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WIND SPEEDS OF 21 TO 33 KNOTS
ARE EXPECTED TO PRODUCE HAZARDOUS WAVE CONDITIONS TO SMALL CRAFT.
INEXPERIENCED MARINERS... ESPECIALLY THOSE OPERATING SMALLER
VESSELS SHOULD AVOID NAVIGATING IN THESE CONDITIONS.

&&

$$


HTTP://WWW.WEATHER.GOV/SANFRANCISCO

450 
WHUS76 KMTR 052145
MWWMTR

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
245 PM PDT MON SEP 5 2011

PZZ530-060400-
/O.CON.KMTR.SC.Y.0325.000000T0000Z-110906T0400Z/
SAN FRANCISCO/SAN PABLO/SUISUN BAYS AND THE WEST DELTA-
245 PM PDT MON SEP 5 2011

...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 PM PDT THIS
EVENING...

A SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 9 PM PDT THIS
EVENING. 

* WINDS: W TO SW WINDS 15 TO 25 KNOTS THROUGH TONIGHT. STRONGEST 
  WINDS WILL BE NORTH OF THE BAY BRIDGE INCLUDING THE WEST DELTA 
  AND THE CARQUINEZ STRAIT. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SMALL CRAFT ADVISORY MEANS THAT WIND SPEEDS OF 21 TO 33 KNOTS
ARE EXPECTED TO PRODUCE HAZARDOUS WAVE CONDITIONS TO SMALL CRAFT.
INEXPERIENCED MARINERS... ESPECIALLY THOSE OPERATING SMALLER
VESSELS SHOULD AVOID NAVIGATING IN THESE CONDITIONS.

&&

$$


HTTP://WWW.WEATHER.GOV/SANFRANCISCO

054 
WHUS76 KMTR 060402
MWWMTR

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
902 PM PDT MON SEP 5 2011


PZZ530-060515-
/O.EXP.KMTR.SC.Y.0325.000000T0000Z-110906T0400Z/
SAN FRANCISCO/SAN PABLO/SUISUN BAYS AND THE WEST DELTA-
902 PM PDT MON SEP 5 2011

...SMALL CRAFT ADVISORY HAS EXPIRED...

THE SMALL CRAFT ADVISORY IS NO LONGER IN EFFECT. 

$$


HTTP://WWW.WEATHER.GOV/SANFRANCISCO

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
832 PM PDT SUN SEP 4 2011

.DISCUSSION...AS OF 8:32 PM PDT SUNDAY...GENERALLY LIGHT ONSHORE
FLOW IS EVIDENT ON THE LATEST SURFACE ANALYSIS WITH NORTHERLY
WINDS OVER THE COASTAL WATERS AT ABOUT 5 TO 10 KNOTS. WINDS
OVERLAND ARE NORTH NORTHWESTERLY FROM 5 TO 10 MPH AND ARE EXPECTED
TO BECOME LIGHT AS THE NIGHT PROGRESSES. THE FINAL LOW LIGHT
VISIBLE SATELLITE IMAGE IS SHOWING STRATUS ALONG THE COAST SLOWLY
PUSHING IN LAND. ACCORDING TO THE FORT ORD PROFILER THE MARINE
LAYER IS HOLDING STEADY AT 1600 FEET AND WITH THE LIGHT ONSHORE
FLOW THE LOW STRATUS CLOUDS WILL PUSH INTO THE INLAND VALLEYS ONCE
AGAIN OVERNIGHT. WITH THE LOW CLOUDS IN PLACE EXPECT OVERNIGHT LOW
TEMPERATURES IN THE LOW TO MID 50S ALONG THE COAST AND IN THE
INLAND VALLEYS WITH OVERNIGHT LOWS IN THE 60S OVER THE HILLS.
ADDITIONALLY...EXPECT PATCHY LIGHT DRIZZLE ALONG THE COAST AND
COASTAL HILLS.

OVERALL THE CURRENT FORECAST PACKAGE LOOKS ON TRACK SO NO CHANGES
OR UPDATES ARE NEEDED.

PREVIOUS DISCUSSION...NOT REALLY FORECASTING MUCH CHANGE IN
TEMPERATURES FOR LABOR DAY AS MAIN UPPER LOW WILL PASS OVERHEAD BY
MONDAY AFTERNOON. THIS MEANS MORE 60S NEAR THE COAST...70S AROUND
THE BAY AND COMFORTABLE 80S FOR THE INLAND VALLEYS. ONLY THE FAR
INTERIOR VALLEYS WILL FLIRT WITH READINGS INTO THE 90S.

THEN ON TUESDAY SHORTWAVE RIDGING WILL DEVELOP...COMPRESSING THE
MARINE LAYER AND LEADING TO A MODEST WARMING TREND FOR ALL AREAS
EXCEPT THE IMMEDIATE COAST BY TUESDAY AFTERNOON.

THE PATTERN BECOMES ZONAL AND SOMEWHAT NON-DESCRIPT DURING THE
MIDWEEK TIME FRAME...MEANING NIGHT AND MORNING LOW CLOUDS AND FOG
WITH AFTERNOON SUNSHINE AND SEASONABLE TEMPERATURES.

IN SIMPLE TERMS IT APPEARS THAT TROPICAL STORM LEE AND HURRICANE
KATIA WILL MORE OR LESS BLOCK THE MAIN FLOW ACROSS THE MID-
LATITUDES. THUS INCOMING ENERGY INTO THE PACIFIC NORTHWEST BY LATE
THURSDAY INTO FRIDAY GETS PINCHED OFF AND HEADS TOWARDS FAR
NORTHERN CALIFORNIA. THE MODELS HAVE BEEN CONSISTENT IN KEEPING
THIS FEATURE CENTERED IN THE PROXIMITY OF THE BAY AREA FOR MUCH OF
NEXT WEEKEND. MODEL QPF IS GENERATED BUT MOSTLY TO OUR EAST OVER
THE SIERRA AND FOOTHILLS. CURRENT SOLUTIONS WOULD KEEP OUR REGION
MORE OR LESS ON THE DRY BACKSIDE OF THE LOW...POSSIBLY EVEN WITH
SOME DRY NE WINDS ON THE BACKSIDE. THE MOST LIKELY OUTCOME IS NEAR
OR BELOW NORMAL TEMPS...ALTHOUGH WERE GETTING TO THE TIME OF YEAR
WHERE A TROUGH OF THIS MAGNITUDE COULD EFFECTIVELY MIX OUT THE
MARINE LAYER. LOTS OF SCENARIOS TO CONSIDER BUT DONT FEEL THERE
WILL BE MUCH OVERALL EFFECT ON OUR SENSIBLE WEATHER WITH BULK OF
THE SHOWER/T-STORM THREAT WELL TO OUR EAST BUT WILL CONTINUE TO
MONITOR.

&&

.AVIATION...AS OF 5:03 PM SUNDAY...WIDESPREAD STRATUS PERSIST
ALONG THE COAST THIS AFTERNOON AND IS EXPECTED TO MOVE INLAND
OVER AREA TERMINALS THIS EVENING AND OVERNIGHT. A WEAK SHORTWAVE
MOVING ACROSS THE REGION IS THINNING OUT THE STRATUS OFF THE BIG
SUR COAST HOWEVER THE MARINE LAYER REMAINS STEADY AT AROUND 1500
FEET AND DOES NOT SEEM TO BE AFFECTED BY THIS DISTURBANCE. WINDS
WILL REMAINS LIGHT THROUGH THE OVERNIGHT AND MORNING HOURS.
CONDITIONS ARE FAIRLY SIMILAR TO YESTERDAY THEREFORE PERSISTENCE
FORECAST REMAINS IN PLACE.

VICINITY OF KSFO...SIMILAR CONDITIONS TO YESTERDAY EXPECTED
TONIGHT WITH STRATUS EXPECTED TO REACH KOAK AROUND 04Z THIS
EVENING AND KSFO AROUND 07Z TONIGHT. WEST WINDS WILL EASE THIS
EVENING WITH LIGHT WIND EXPECTED THROUGH THE NIGHT AND MORNING
HOURS.

KSFO BRIDGE APPROACH...SIMILAR TO KSFO WITH STRATUS EXPECTED TO
RETURN SHORTLY BEFORE KSFO...AROUND 05Z-06Z.

MONTEREY BAY AREA TERMINALS...SIMILAR CONDITIONS TO YESTERDAY
EXPECTED TONIGHT WITH STRATUS ANTICIPATED TO REACH KSNS AROUND 02Z
AND KMRY AROUND 04Z THIS EVENING. IFR TO LIFR CIGS ANTICIPATED
OVERNIGHT. WEST WINDS BECOMING LIGHT AND VARIABLE OVERNIGHT.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
     .TNGT...NONE

&&

PUBLIC FORECAST: LARRY/RWW
AVIATION/MARINE: CW