Area Forecast Discussion
Issued by NWS Eureka, CA

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000
FXUS66 KEKA 021626
AFDEKA

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE EUREKA CA
ISSUED BY NATIONAL WEATHER SERVICE MEDFORD OR
926 AM PDT TUE SEP 2 2014

.UPDATE...ADJUSTED SKY COVER AND PATCHY AREAS OF FOR TODAY. THE
REST OF THE FORECAST IS STILL ON TRACK. -PETRUCELLI


&&

.SYNOPSIS...DRY CONDITIONS WILL CONTINUE FOR THE REST OF THE WEEK.
OFFSHORE FLOW FLOW WILL CONTINUE TONIGHT INTO EARLY WEDNESDAY
MORNING AND AREAS OF SMOKE WILL PERSIST FROM THE HAPPY CAMP
COMPLEX TOWARDS THE COAST. TEMPERATURES WILL REMAIN WARM FOR
INLAND LOCATIONS THIS WEEK. -PETRUCELLI


&&

.DISCUSSION...A THERMAL TROUGH IS NOW ALONG THE COAST AND THIS IS
EXPECTED TO STRENGTHEN THIS AFTERNOON THROUGH WEDNESDAY. THE MAIN
IMPACT FROM THIS WILL BE MODERATE WINDS OVER THE RIDGES OVER THE
NORTHERN PART OF HUMBOLDT AND DEL NORTE COUNTIES. A DRY FRONT WILL
PUSH SOUTH TOWARDS THE AREA TONIGHT, BUT THE MAIN EFFECT WILL BE A
DRIER AIR MASS AND INCREASING OFFSHORE FLOW RESULTING IN MODERATE
TO POOR RIDGETOP RECOVERIES. THE THERMAL TROUGH IS EXPECTED TO
EXPAND NORTHWARD TOWARDS THE END OF THE WEEK WHICH WILL WEAKEN THE
OFFSHORE FLOW. -PETRUCELLI




&&

.AVIATION...MARINE STRATUS CONTINUES TO HUG ALONG THE COAST, BUT
SKIES ARE CLEAR JUST NORTH OF THE HUMBOLDT/DEL NORTE COUNTY LINE.
INLAND SKIES ARE CLEAR WITH VFR CONDITIONS EXPECTED TO CONTINUE
FOR THE NEXT 24 HOURS, EXCEPT FOR AREAS OF SMOKE WHICH COULD
REDUCE VISIBILITIES AT TIMES. CURRENT VISIBLE IMAGE IS SHOWING
SIGNS OF THE MARINE STRATUS ALONG THE HUMBOLDT/MENDOCINO COUNTY
LINE IS STARTING TO RETREAT BACK TOWARDS THE COAST, BUT IS
EXPECTED TO STICK AROUND INTO AT EAST EARLY AFTERNOON. CURRENT TAF
AT KACV SHOWS STRATUS BREAKING OUT AROUND 18Z, BUT THIS COULD BE
DELAYED BY AN HOUR OR TWO. -PETRUCELLI


&&

.MARINE...THE GRADIENT BETWEEN HIGH PRESSURE OFFSHORE THE PAC NW
COAST AND A THERMAL TROF OVER THE CA MAINLAND WILL TIGHTEN OVER THE
NEXT 36 HOURS. THIS WILL ALLOW N WINDS TO INCREASE TO SOLID GALE
FORCE OVER THE OFFSHORE WATERS TODAY. HAVE KEPT CURRENT HEADLINES AS
THEY ARE. THE PERIOD OF POSSIBLE HAZARDOUS SEAS OVER THE N NEAR
SHORE WATERS LOOKS TO BE SHORT LIVED...SO LEFT THE HAZARDOUS SEAS
WATCH IN PLACE. THIS WILL LIKELY NEED TO BE UPGRADED OR CANCELLED BY
THE AFTERNOON PACKAGE. THE PRESSURE GRADIENT WILL RELAX FAIRLY
RAPIDLY WED NIGHT AS THE THERMAL TROF SHIFTS TOWARD THE COAST.


&&

.PREV DISCUSSION... /ISSUED 400 AM PDT TUE SEP 2 2014/

SYNOPSIS...DRY CONDITIONS WILL CONTINUE ACROSS THE REGION THIS
WEEK. OFFSHORE FLOW WILL OCCUR OVERNIGHT AND THE EARLY MORNING
WHICH WILL MOVE SMOKE FROM THE HAPPY CAMP COMPLEX TOWARD THE
COAST. TEMPERATURES WILL INCREASE WEDNESDAY AND THURSDAY.

DISCUSSION...A LOW PRESSURE TROUGH WILL MOVE INTO THE AREA TODAY
THEN AN OFFSHORE HIGH PRESSURE RIDGE WILL STRENGTHEN IN THE WAKE
OF THE TROUGH. THE HIGH PRESSURE RIDGE COMBINED WITH AN INLAND
THERMAL TROUGH WILL PRODUCE MODERATE WINDS AND DRIER CONDITIONS
ACROSS THE REGION THE MIDDLE OF THIS WEEK. THESE CONDITIONS WILL
RESULT IN THE TEMPERATURES INCREASING WEDNESDAY AND THURSDAY.
SLIGHTLY COOLER TEMPERATURES WILL OCCUR THIS WEEKEND


&&

.EKA WATCHES/WARNINGS/ADVISORIES...
CA...NONE.
NORTHWEST CALIFORNIA COASTAL WATERS...SMALL CRAFT ADVISORY UNTIL 9 AM PDT
     THURSDAY PZZ450.

     HAZARDOUS SEAS WATCH FROM WEDNESDAY AFTERNOON THROUGH LATE
     WEDNESDAY NIGHT PZZ450.

     SMALL CRAFT ADVISORY UNTIL 9 AM PDT THIS MORNING PZZ470.

     GALE WARNING UNTIL 8 AM PDT THURSDAY PZZ470.

     SMALL CRAFT ADVISORY FROM 5 PM THIS AFTERNOON TO 3 AM PDT
     THURSDAY PZZ455.

     SMALL CRAFT ADVISORY UNTIL 5 PM PDT THIS AFTERNOON PZZ475.

     GALE WARNING FROM 5 PM THIS AFTERNOON TO 2 AM PDT THURSDAY
     PZZ475.

&&

$$

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