Severe Thunderstorm Warning 1, NWS San Francisco Bay Area, CA

000 
WWUS56 KMTR 292329
SVSMTR

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN FRANCISCO CA
427 PM PDT MON OCT 29 2007

CAC069-292337-
/O.CAN.KMTR.SV.W.0001.000000T0000Z-071029T2345Z/
SAN BENITO CA-
427 PM PDT MON OCT 29 2007

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL SAN BENITO COUNTY IS
CANCELLED...

THE THUNDERSTORM THAT PROMPTED THE SEVERE THUNDERSTORM WARNING FOR 
CENTRAL SAN BENITO COUNTY HAS WEAKENED...AND THUS THE WARNING HAS 
BEEN CANCELLED. SCATTERED SHOWERS AND THUNDERSTORMS WILL CONTINUE 
OVER THE AREA FOR THE NEXT HOUR OR SO...ALTHOUGH ADDITIONAL SEVERE 
WEATHER IS NOT ANTICIPATED. 


LAT...LON 3693 12121 3686 12110 3683 12108 3683 12106
      3682 12104 3658 12112 3666 12132
TIME...MOT...LOC 2327Z 207DEG 19KT 3678 12111

$$
SOROKA

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN FRANCISCO CA
256 PM PDT MON OCT 29 2007

.DISCUSSION...CONVECTIVE ACTIVITY IS STARTING TO RAMP UP ACROSS
NORTHERN CALIFORNIA AS THE UPPER LOW CONTINUES TO APPROACH THE
CENTRAL COAST. THE GREATEST AMOUNT OF LIGHTNING ACTIVITY IS ALONG THE
SIERRA NEVADA RANGE AS WELL AS IN THE NORTHERN SACRAMENTO VALLEY.
HOWEVER THERE HAS BEEN A PERSISTENT LINE OF SHOWERS OVER AND JUST
WEST OF THE MONTEREY BAY OVER THE PAST HOUR. LIGHTNING STRIKES WITH
THIS CELLS HAVE ALSO BEEN DETECTED AND THUNDER HAS BEEN HEARD AT THE
WEATHER OFFICE IN MONTEREY. THE NORTHERN-MOST OF THIS LINE OF CELLS
IS EXPECTED TO REACH THE SANTA CRUZ COUNTY COASTLINE BY 3 PM. LATEST
RADAR SCANS REVEAL NEW SHOWER/THUNDERSTORM DEVELOPMENT EAST OF
SALINAS ALSO MOVING NORTHWARD. LIGHTNING STRIKES HAVE JUST BEEN
DETECTED WITH THE CELLS NEAR HOLLISTER. THE SHOWER AND THUNDERSTORM
ACTIVITY IS EXPECTED TO TAPER OFF DURING THE EVENING AND END
ALTOGETHER BY TUESDAY MORNING AS THE UPPER LOW CONTINUES TO MOVE EAST
OF OUR CWA.

ANOTHER...WEAKER UPPER LEVEL TROUGH IS PROGGED TO MOVE ACROSS
NORTHERN CALIFORNIA ON TUESDAY. THIS IS ONLY EXPECTED TO BRING PARTLY
CLOUDY SKIES TO THE DISTRICT BUT NO RAIN. HIGH PRESSURE ALOFT IS THEN
SLATED TO BUILD ALONG THE COAST BEGINNING ON WEDNESDAY WITH OFFSHORE
SURFACE FLOW DEVELOPING BY LATER IN THE WEEK. THESE FACTORS ARE
EXPECTED TO RESULT IN A WARMING TREND WHICH WILL CONTINUE INTO THE
WEEKEND. MEDIUM RANGE MODELS NOW KEEP THE COAST DRY INTO NEXT WEEK
WITH HIGH PRESSURE DOMINATING THE AREA.

&&

.AVIATION...PREVIOUS DISCUSSION...DIFFICULT FORECAST DAY FOR ALL
TERMINALS. AN UPPER LEVEL LOW OFF THE CALIFORNIA COAST CONTINUES TO
THREATEN THE CENTRAL COAST WITH THE CHANCE OF RAIN SHOWERS THIS
AFTERNOON. IFR CIGS PERSIST AT MOST BAY AREA TERMINALS AT THIS HOUR.
CIGS ARE EXPECTED TO LIFT (APPROX 20Z) AS THE LOW NEARS THE COAST.
EXACT TIMING ON THIS SYSTEM AND THE PROBABILITY OF SHOWERS IS HARD TO
PIN DOWN. HOWEVER CURRENT FORECAST HAVE SCATTERED RAIN SHOWERS
BEGINNING AFTER 22Z. WINDS WILL REMAIN OUT OF THE WEST UNDER 15 KT
ACROSS THE REGION.

&&

.MTR WATCHES/WARNINGS/ADVISORIES...
     .TNGT...SCA...SAN FRANCISCO BAY.

&&

PUBLIC FORECAST: ANDERSON
AVIATION/MARINE: C WALBRUN

NWS ON THE WEB AT WEATHER.GOV/SANFRANCISCO