Hazardous Seas Warning 31, NWS Eureka, CA

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE EUREKA CA
327 PM PST TUE NOV 3 2009

.SYNOPSIS...A TROUGH OF LOW PRESSURE APPROACHING THE COAST WILL
BRING COOLER TEMPERATURES TO NORTHWEST CALIFORNIA ON WEDNESDAY.
THE TROUGH WILL ALSO BRING RAIN AND GUSTY SOUTH WINDS THE THE AREA
THURSDAY MORNING THROUGH FRIDAY MORNING.

&&

.DISCUSSION...A RIDGE OF HIGH PRESSURE CURRENTLY OVER THE WEST
COAST IS BRINGING NORTHWEST CALIFORNIA SUNNY SKIES AND ABOVE
NORMAL TEMPERATURES. TEMPERATURES ALONG THE COAST MADE IT INTO THE
MID 60S TODAY WHILE INLAND TEMPERATURES ROSE INTO THE 70S TO NEAR
80. THIS BEAUTIFUL WEATHER IS COMING TO AN END. THE RIDGE AXIS IS
MOVING TO THE EAST AND A TROUGH CURRENTLY OVER THE PACIFIC IS
MOVING TOWARDS THE WEST COAST. THE AREA WILL SEE ANOTHER CLEAR
NIGHT WITH SOME PATCHY FOG POSSIBLE ALONG THE COAST AND THROUGH
THE INLAND VALLEYS. AS THE TROUGH APPROACHES THE WEST COAST, ON
WEDNESDAY TEMPERATURES WILL COOL SEVERAL DEGREES. CLOUDS WILL ALSO
INCREASE DURING THE DAY WEDNESDAY. MODELS HAVE COME INTO GREAT
AGREEMENT SHOWING RAIN ASSOCIATED WITH THE TROUGH MOVING THROUGH
THE AREA EARLY THURSDAY MORNING INTO FRIDAY MORNING. HAVE
DRAMATICALLY BUMPED UP POPS DURING THIS TIME PERIOD TO REFLECT
THIS. THE HIGHEST POPS CONTINUE TO BE TO THE NORTH AND DECREASE
SOUTHWARD. RAINFALL AMOUNTS ARE FORECAST TO BE NEAR 1 INCH NEAR
THE CA/OR BORDER, NEAR 0.5 INCHES IN HUMBOLDT AND TRINITY
COUNTIES, AND NEAR 0.25 INCHES OVER MENDOCINO COUNTY. SNOW IS NOT
A CONCERN WITH THIS STORM SINCE SNOW LEVELS WILL REMAIN HIGH.
SOUTH WINDS WILL ALSO BECOME GUSTY BEFORE THE COLD FRONT MOVES
THROUGH FRIDAY MORNING, SO WILL HAVE TO KEEP AN EYE ON THAT. THE
SECOND HALF OF FRIDAY AND MOST OF SATURDAY LOOK DRY. MORE RAIN IS
POSSIBLE THE SECOND HALF OF THE WEEKEND. STROZ

&&

.AVIATION...EXPECT A MOSTLY CLEAR NIGHT ACROSS THE FORECAST
AREA...ASIDE FROM VALLEY FOG INLAND AND VARIABLE PATCHY GROUND
FOG. WINDS WILL BE LIGHT THROUGH THE NIGHT...THEN BEGINNING TO
INCREASE BY MID TO LATE MORNING AHEAD OF AN APPROACHING COLD
FRONT. CC

&&

.MARINE...LIGHT WINDS AND FAIRLY TRANQUIL SEAS WILL PERSIST ACROSS
THE COASTAL WATERS THROUGH WEDNESDAY...BEFORE AN APPROACHING COLD
FRONT BRINGS STRONGLY INCREASING SOUTH WINDS TO THE AREA. GALES
ARE EXPECTED OVER THE NORTHERN OUTER WATERS LATE WED THROUGH THU
EVENING...WITH SMALL CRAFT WINDS ELSEWHERE. THE EXPECTED STEEP
SHORT PERIOD SEAS WILL ACCOMPANY THE MODERATE TO STRONG WINDS
THROUGH THURSDAY EVENING. IMMEDIATELY FOLLOWING THIS EVENT...A
HUGE NW SWELL WILL MOVE INTO THE WATERS...BUILDING FROM AROUND 8
TO 10 FT TO 20 FT AT 16 SECONDS BY FRIDAY AFTERNOON. THE SWELL IS
EXPECTED TO PEAK AROUND 22 TO 24 FT SAT MORNING AND WILL PERSIST
THROUGH EARLY NEXT WEEK. CC

&&

.EKA WATCHES/WARNINGS/ADVISORIES...

CA...NONE.

NORTHWEST CALIFORNIA COASTAL WATERS...

PZZ470 SMALL CRAFT ADVISORY...GALE AND HAZARDOUS SEAS WATCH
PZZ450-455-475 SMALL CRAFT ADVISORY

&&

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