Damaging Wind in California, December 30, 2002

NORTHWEST CALIFORNIA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE EUREKA CA
300 PM MON DEC 30 2002

UPPER TROUGH ALONG 138W BECOMING NEGATIVE TILTED WITH WARM AIR
ADVECTION MOVING OVER AREA AND COLD FRONT LAGGING BACK OFF THE
COAST. SURFACE LOW IS DEVELOPING ABOUT 40N 128W TO KEEP STRONG WINDS
GOING THROUGH EARLY TONIGHT. EXPECT COLD FRONT TO MOVE THROUGH AFTER
MIDNIGHT WITH DECREASING WINDS AND PRECIPITATION BUT LOWERING SNOW
LEVELS. WILL CONTINUE WIND ADVISORY FOR NORTH OF THE CAPE EARLY
TONIGHT AND URBAN AND SMALL STREAM FLOOD ADVISORY FOR ZONE 1 AS
RAINFALL AMOUNTS RANGING FROM 2.5 INCHES UP ON THE SMITH RIVER TO 2
INCHES ON THE EEL RIVER AND ANOTHER 1 INCH IN SOUTHERN MENDOCINO
COUNTY THROUGH TONIGHT.  THIS WILL BE ENOUGH TO PUSH THE NAVARRO AND
EEL RIVER AT FERNBRIDGE OVER FLOOD STAGE BUT ONLY PUSH THE
SMITH...MAD...AND VAN DUZEN TO ABOVE MONITOR STAGE BUT BELOW FLOOD.

WITH INCREASING SWELL AND HIGH TIDES WILL ISSUE ANOTHER COASTAL
FLOOD ADVISORY FOR THE COASTAL ZONES FOR TUESDAY MORNING WHEN HIGH
TIDE OCCURS ABOUT 9 AM.

BRIEF RIDGING LATE TUESDAY NIGHT WITH OVERRUNNING PRECIPITATION
COMING IN ON NEW YEARS DAY. THERE IS ANOTHER COLD FRONT APPROACHING
THURSDAY WITH PASSAGE THURSDAY NIGHT INTO FRIDAY. THE CANADIAN IS A
LITTLE SLOWER WITH THIS TROUGH WHICH CONTINUES THE PRECIPITATION
THROUGH FRIDAY BUT WILL GO WITH THE FASTER GFS AND DECREASE CHANCE
OF PRECIPTATION DURING THE DAY ON FRIDAY. WEAK WARM ADVECTION
CONTINUES INTO SATURDAY WITH LINGERING CHANCES OF RAINFALL. RIDGE
FINALLY BUILDS STRONG ENOUGH SUNDAY AND MONDAY FOR MOSTLY CLEAR
SKIES WITH A TROUGH COMING THROUGH ON TUESDAY. DEAN

  CEC/ACV/EKA +867 UKI +842

.EKA...WINTER STORM WARNING...ABOVE 3000 FT...CAZ004
    ...FLOOD WARNING NAVARRO AND EEL RIVER AT FERNBRIDGE
    ...SNOW ADVISORY...ABOVE 3000 FT...CAZ003
    ...GALE WARNING...PT ST GEORGE TO PT ARENA 0-60NM
    ...WIND ADVISORY...CAZ001>003
    ...URBAN/SMALL STREAM ADVISORY...CAZ001

CAZ001>004-076-311400-
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE EUREKA CA
536 AM PST MON DEC 30 2002

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTHWEST CALIFORNIA

.DAY ONE...TODAY

ABOVE 3000 FEET...A WINTER STORM WARNING IS IN EFFECT FOR THE UPPER
TRINITY RIVER ...AND A SNOW ADVISORY IS IN EFFECT ACROSS THE NORTH
COAST INTERIOR. A WIND ADVISORY IS IN EFFECT FOR DEL NORTE AND
HUMBOLDT COUNTIES ALONG WITH COASTAL SECTIONS OF MENDOCINO COUNTY.
SEE DETAILS OF THESE WARNINGS AND ADVISORIES IN SFOWSWEKA.

AN URBAN/SMALL STREAM FLOOD ADVISORY IS IN EFFECT FOR DEL NORTE AND
HUMBOLDT COUNTIES TODAY. SEE SFOFLSEKA FOR DETAILS.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

SATURATED GROUND AND EXCESSIVE PRECIPITATION WILL ALLOW MAIN STEM
RIVERS TO RISE DURING THE COMING WEEK. ANOTHER SYSTEM IS EXPECTED
ALONG THE NORTHWEST COAST OF CALIFORNIA THURSDAY.

.INSTRUCTIONS TO SPOTTERS...
WEATHER SPOTTERS ARE ENCOURAGED TO REPORT SIGNIFICANT WEATHER
CONDITIONS ACCORDING TO STANDARD OPERATING PROCEDURES.

MJV