EXTREME SOUTHWESTERN CALIFORNIA AREA FORECAST DISCUSSION
NWS SAN DIEGO CA
AFDSAN 900 PM PST WED JAN 31 2001
...SYNOPSIS...
SANTA ANA WINDS WILL BLOW OVER THE REGION THROUGH THURSDAY AS HIGH
PRESSURE BUILDS IN ALOFT...AND AT THE SURFACE. THE WINDS WILL WEAKEN
LATE THURSDAY WHILE HIGH PRESSURE BRINGS WARM SUNNY DAYS AND CLEAR
COOL NIGHTS ALONG WITH VERY DRY CONDITIONS INTO THE WEEKEND.
...DISCUSSION...
STILL HARD PRESSED TO FIND WINDS AT ANY REGULAR REPORTING STATION
MEETING CRITERIA. OF COURSE FREMONT CANYON IS HIGH WIND AND THE
RIALTO HELIPORT HAS SUSTAINED 40 TO 45 MPH. OTHERWISE...THE ONLY
INDICATION OF POTENTIAL...WERE TWO ACARS OBSERVATIONS INTO ONTARIO
THIS EVENING SHOWING WINDS AT 50 KT AT 4K FT. A CALL TO DESERT HOT
SPRINGS SHOWS ALL QUIET IN THE NORTHERN COACHELLA VALLEY AT 830 PM.
00Z MESOETA SHOWS 500 MB WINDS VEERING TO THE NORTHEAST AND
INCREASING TO 55 KTS NOW OVER THE FORECAST AREA. FURTHER
STRENGTHENING TO 65 KTS IS FORECAST OVER SAN DIEGO COUNTY LATER
TONIGHT. NVA IS MAXIMIZED THROUGH 9Z. ETA SHOWS STRONGEST WINDS
CONTINUING THROUGH AT LEAST 15Z THURSDAY. AS NOCTURNAL COOLING
STRENGTHENS THE SURFACE PRESSURES OVER THE GREAT BASIN...AND UPPER
SUPPORT MAXIMIZES...POTENTIAL FOR HIGH WIND REACHING THE SURFACE
INCREASES. HARD TO SAY WHERE WAVES WILL SURFACE BUT LOCAL WIND
PROGRAM PEGS POTENTIAL GUSTS TO HURRICANE FORCE. WILL LEAVE SAN
DIEGO COUNTY MOUNTAINS IN ADVISORY CRITERIA FOR NOW BUT POTENTIAL
EXISTS THERE FOR HIGH WIND AS WELL IN FAVORED AREAS BY MORNING.
AFTER THURSDAY THE WINDS ABATE...BUT VERY DRY CONDITIONS REMAIN AS
OFFSHORE BREEZES CONTINUE THROUGH THE WEEKEND. WIND ADVISORY WILL BE
UPDATED BY 10 PM...OTHERWISE NO UPDATES TO FORECAST PLANNED.
SAN 0000
.SAN...HIGH WIND WARNING ZONES 48...57.................SEE LAXNPWSAN.
...WIND ADVISORIES ZONES 42...50...55...56...58...61...SEE LAXNPWSAN
JAD