Damaging Wind in California, April 28, 2005

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN DIEGO CA
350 AM PDT THU APR 28 2005

.SYNOPSIS...A LATE SEASON PACIFIC STORM WILL MOVE INLAND ACROSS
CALIFORNIA TODAY BRINGING MODERATE AMOUNTS OF RAIN AND SNOW ALONG
WITH STRONG GUSTY WINDS IN THE MOUNTAINS AND DESERTS. FAIR FRIDAY
AND A LITTLE WARMER SATURDAY UNDER WEAK HIGH PRESSURE. ANOTHER WEAKER
SYSTEM WILL BRUSH BY TO THE NORTH SUNDAY AND MONDAY WITH CLOUDS AND
A DEEPENING MARINE LAYER.

&&

.DISCUSSION...FOR EXTREME SOUTHWESTERN CALIFORNIA INCLUDING ORANGE...
SAN DIEGO...WESTERN RIVERSIDE AND SOUTHWESTERN SAN BERNARDINO
COUNTIES.

LATE SEASON STORM CONTINUES TO MOVE EASTWARD ACROSS SOUTHERN
CALIFORNIA. GFS REMAINS THE PREFERRED SOLUTION. 24-HOUR TRENDS ARE
SLIGHTLY SLOWER EASTWARD MOVEMENT WITH 500 MB TEMPERATURES NOT QUITE
AS COOL. SATELLITE IMAGERY SHOWS A WAVE HAS DEVELOPED ON THE FRONT
OVER THE SOUTHERN CALIFORNIA BIGHT WITH COOLING OF CLOUD TOPS IN
THIS AREA. THIS MESHES WITH THE ENHANCEMENT SHOWN IN THE GFS QPF
FIELD OVER THIS AREA FOR THIS MORNING. MAIN PRECIPITATION BAND HAS
REACHED NORTHWEST PORTIONS OF THE FORECAST AND WILL CONTINUE TO
OVERSPREAD MUCH OF THE REST OF THE FORECAST AREA THROUGH DAYBREAK.
SNOW ADVISORY CONTINUES FOR THE HIGHER MOUNTAINS WITH WIND ADVISORY
FOR THE MOUNTAINS AND DESERTS. RAINFALL AMOUNTS ARE EXPECTED TO
RANGE FROM ONE HALF TO ONE INCH AT THE COAST TO 1 TO 2 INCHES ON THE
COASTAL SLOPES. OTHERWISE...NOT TOO MUCH CHANGE IN THINKING FOR THE
FORECAST FOR THE NEXT WEEK. SHORTWAVE MOVING THROUGH ON SUNDAY AND
EARLY MORNING REMAINS MARGINAL FOR PRECIPITATION FOR SOUTHWEST
CALIFORNIA...BUT SHOULD BRING SOME MINOR COOLING WITH STRONGER GUSTY
WINDS IN THE MOUNTAINS AND DESERTS...THEN FAIR AND GRADUAL WARMING
THROUGH MIDWEEK.

NOTE...THE IFPS DATABASE HAS BECOME CORRUPTED BY SOME PROCESS NCF
HASNT SEEN BEFORE. TEXT PRODUCTS REFLECT MOST OF THE LATEST
THINKING ON THE FORECAST. GRAPHICAL PRODUCTS AND SOME WEB PRODUCTS
PULLED FROM THE GRIDS WILL NOT BE UPDATED UNTIL THIS PROBLEM IS
RESOLVED. THERE MAY BE SOME MINOR INCONSISTENCIES IN SOME OF THE
THE WEB AND GRAPHICAL PRODUCTS AS A RESULT.

&&

.SGX WATCHES/WARNINGS/ADVISORIES...

SNOW ADVISORY UNTIL 6 PM...SEE LAXWSWSGX.
WIND ADVISORY UNTIL 9 PM...SEE LAXNPWSGX.
MARINE WEATHER STATEMENT...SEE LAXMWSSGX.

&&

MARTIN

HAZARDOUS WEATHER OUTLOOK...UPDATE
NATIONAL WEATHER SERVICE SAN DIEGO CA
910 PM PDT WED APR 27 2005

CAZ042-043-048-050-055-056-057-058-060-061-062-281400-
ORANGE COUNTY COASTAL AREAS-
SAN DIEGO COUNTY COASTAL AREAS-
SAN BERNARDINO AND RIVERSIDE COUNTY VALLEYS-THE INLAND EMPIRE-
SAN DIEGO COUNTY VALLEYS-
SAN BERNARDINO COUNTY MOUNTAINS-
RIVERSIDE COUNTY MOUNTAINS-
SANTA ANA MOUNTAINS AND FOOTHILLS-
SAN DIEGO COUNTY MOUNTAINS-
APPLE AND LUCERNE VALLEYS-
COACHELLA VALLEY-
SAN DIEGO COUNTY DESERTS-
910 PM PDT WED APR 27 2005

THIS HAZARDOUS WEATHER OUTLOOK IS FOR
ALL OF EXTREME SOUTHWESTERN CALIFORNIA.

.DAY ONE... TODAY THROUGH TONIGHT.

A LATE SEASON PACIFIC STORM WILL MOVE EASTWARD TOWARDS CALIFORNIA.
MODERATE TO LOCALLY HEAVY PRECIPITATION MAY DEVELOP ALONG AND WEST
OF THE MOUNTAINS LATE TONIGHT. STRONG GUSTY WINDS WILL DEVELOP IN
THE MOUNTAINS AND DESERTS THIS AFTERNOON AND CONTINUE TONIGHT.

.DAYS TWO THROUGH SEVEN... THURSDAY THROUGH WEDNESDAY.

FOR THURSDAY...A LATE SEASON PACIFIC STORM WILL MOVE INLAND ACROSS
CALIFORNIA. THIS STORM IS EXPECTED TO BRING MODERATE TO LOCALLY
HEAVY PRECIPITATION ALONG AND WEST OF THE MOUNTAINS. THERE WILL BE
STRONG GUSTY WINDS IN THE MOUNTAINS AND DESERTS. THERE IS THE
POSSIBILITY OF ISOLATED THUNDERSTORMS AND WATERSPOUTS OVER THE
COASTAL WATERS THURSDAY MORNING...SEE LAXMWSSGX.

SEVERAL INCHES OF SNOW ARE EXPECTED IN THE SAN BERNARDINO AND
RIVERSIDE COUNTY MOUNTAINS ABOVE 6000 FEET CAUSING HAZARDOUS TRAVEL
CONDITIONS...SEE LAXWSWSGX.

.SPOTTER INFORMATION STATEMENT...SKYWARN WEATHER SPOTTER ACTIVATION
IS POSSIBLE THURSDAY MORNING. WEATHER SPOTTERS ARE ENCOURAGED
TO REPORT SIGNIFICANT WEATHER CONDITIONS ACCORDING TO STANDARD
OPERATING PROCEDURES.

MARTIN/JAD