Small Craft Advisory 305, NWS San Francisco Bay Area, CA

147 
WHUS76 KMTR 062123
MWWMTR

URGENT - MARINE WEATHER MESSAGE
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
223 PM PDT SAT AUG 6 2011

PZZ530-070400-
/O.CON.KMTR.SC.Y.0305.000000T0000Z-110807T0400Z/
SAN FRANCISCO/SAN PABLO/SUISUN BAYS AND THE WEST DELTA-
223 PM PDT SAT AUG 6 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: WESTERLY WINDS OF 15 TO 25 KT WILL CONTINUE THROUGH THIS
  EVENING BEFORE SUBSIDING.

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

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN FRANCISCO BAY AREA
200 AM PDT SAT AUG 6 2011

.DISCUSSION...AS OF 2:00 AM PDT SATURDAY...A PERSISTENT UPPER LEVEL
TROUGH AND ONSHORE SURFACE WINDS HAVE BROUGHT PLENTY OF LOW CLOUDS
RIGHT BACK INLAND. SATELLITE IMAGERY SHOWS STRATUS WIDESPREAD ACROSS
THE EASTERN PACIFIC. LIKE PREVIOUS DAYS/NIGHTS SPOTTY DRIZZLE IS
OCCURRING ALONG THE IMMEDIATE COAST AGAIN AT THIS HOUR. THE MODELS DO
SHOW SOME CHANGE COMING SOON IN THE FORM OF HIGH PRESSURE RIDGING
ALOFT OVER THE REGION FOR EARLY NEXT WEEK. THIS WILL ADD A FEW
DEGREES TO COASTAL TEMPERATURES AND INTERIOR TEMPERATURES WILL BE
MAINLY HOT. THE MARINE LAYER SHOULD BECOME COMPRESSED AS THE HIGH
DEVELOPS EARLY NEXT WEEK WHICH WOULD LEAD TO MUCH LOWER CHANCES FOR
LATE NIGHT PATCHY DRIZZLE.

NWS EUREKA OFFICE HAS BEEN EXPERIENCING COMMS PROBLEMS SINCE FRIDAY.
WE ARE IN AVIATION BACK-UP MODE FOR EUREKA UNTIL THESE PROBLEMS
ARE SORTED AND FIXED. IT IS PROJECTED THAT THEIR COMMS WILL BE FULLY
RESTORED SOMETIME TODAY.

&&

.AVIATION...AS OF 4:45 AM PDT SATURDAY...MARINE LAYER IS CURRENTLY
BETWEEN 1500 AND 2000 FEET DEEP WHILE ONSHORE SURFACE GRADIENTS ARE
SLIGHTLY STRONGER. THIS WILL RESULT IN LATER CLEARING FOR THE
APPROACH ZONE TODAY. ONCE AGAIN MRY BAY AREA WILL ONLY SEE A FEW
HOURS OF AFTERNOON CLEARING.

VICINITY OF KSFO...IFR CIGS THROUGH 18Z. A HOLE IN THE STRATUS IS
OVER SFO AND THERE HAVE BEEN OCCASIONAL REPORTS OF SCT CONDITIONS
THROUGH THE EARLY MORNING. THIS HOLE COULD RESULT IN CIGS CLEARING
EARLIER THAN FORECAST AT SFO. EVEN IF SFO CLEARS OUT EARLIER
THAN FORECAST...THE APPROACH ZONE WILL BE UNDER IFR CONDITIONS
THROUGH 19Z.

KSFO BRIDGE APPROACH...SEE VICINITY OF KSFO DISCUSSION.

MONTEREY BAY AREA TERMINALS...LIFR CIGS IMPROVING TO IFR AFTER
17Z. CLEARING AT SNS AFTER 19Z AND AT MRY AFTER 21Z.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
     .TDA...SCA...SFO BAY WATERS THIS AFTERNOON.

&&

PUBLIC FORECAST: CANEPA
AVIATION/MARINE: W PI