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000
FXUS66 KEKA 181022
AFDEKA

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE EUREKA CA
322 AM PDT SAT MAY 18 2013

.SYNOPSIS...A WEAK DISTURBANCE WILL BRING A SLIGHT CHANCE OF
SHOWERS TO AREAS NORTH OF CAPE MENDOCINO TODAY. OTHERWISE...
EXPECT A WARMING AND DRYING TREND THROUGH THE WEEKEND.
&&

.DISCUSSION...SAT IMAGERY SHOWS LOW CLOUDS ACROSS PORTIONS OF
HUMBOLDT...DEL NORTE AND COASTAL MENDO COUNTY. OBS FROM FOT AND
WEB CAMS INDICATE FG MORE PREVALENT INLAND. LATEST TRENDS SHOW
CLOUDS N OF CAPE MENDO BEGINNING TO DISSIPATE AS A WEAK FRONT
APPROACHES THE REGION. CLOUDS ASSOCIATED WITH THIS FRONT WILL
BEGIN MOVG INTO CWA OVER THE NEXT FEW HRS WITH SCHC-CHC FOR SHRA
MAINLY N OF HWY 299. PRECIP WILL REMAIN LGT WITH ONLY A FEW
HUNDREDTHS UP TO A TENTH OF AN INCH EXPECTED TODAY. ONCE THIS
SYSTEM PASSES BY...A DRYING AND WARMING TREND WILL DEVELOP AND
PERSIST THROUGH THE WEEKEND AS AN UPPER RIDGE BUILDS ALONG THE
WEST COAST. NLY WINDS WILL BECOME BREEZY ALONG THE COAST SUN AS A
THERMAL TROUGH DEVELOPS ACROSS THE INTERIOR AND INTERACTS WITH HIGH
PRES OFFSHORE. MODELS REMAIN IN FAIR AGREEMENT WITH THE UPPER
RIDGE BEGINNING TO BREAK DOWN MON AS A LONG WAVE TROUGH BEGINS
DEEPENING OVER THE PAC NW. MAJORITY OF THE ENERGY WILL REMAIN N OF
CWA BUT EXTENDED MODELS REMAIN IN GOOD AGREEMENT THROUGH THE
EXTENDED WITH THE UPPER TROUGH PERSISTING OVER THE W COAST INTO
NEXT WEEKEND. THIS WILL RESULT IN COOLER WX WITH A SCHC OF
AFTERNOON SHOWERS FOR THE LATTER HALF OF NEXT WEEK.
&&

.AVIATION...WEAK RIDGING HAS BEEN CREATING LIGHT OFFSHORE FLOW
WITH VIRTUALLY NO LOW CLOUD OR FOG AT KACV AND KCEC THIS MORNING.
CLOUD LAYERS SHOULD INCREASE LATER THIS MORNING INTO EARLY
AFTERNOON WITH MOSTLY VFR CIGS AND LITTLE IF ANY LOW CLOUDS
THIS AFTERNOON. KUKI SHOULD REMAIN VFR THROUGH TONIGHT.
&&

.MARINE...HIGH PRES WILL BUILD TOWARD THE PAC NW SUNDAY AS
THERMAL LOW PRES DEVELOPS OVER CALIFORNIA. NORTHERLY WINDS
WILL REACH GALE...PRIMARILY IN THE OUTER WATERS...SUNDAY
AFTERNOON AND EVENING. THE STRONG NORTH WINDS WILL PRODUCE
STEEP SEAS ACROSS THE INNER WATERS AND A WARNING FOR SEAS MAY BE
NECESSARY AS SEAS HIT 10-12 FT AT 8 SECONDS BY SUN NIGHT.
&&

.EKA WATCHES/WARNINGS/ADVISORIES...
SMALL CRAFT ADVISORY FROM 8 AM SUN TO 5 AM PDT THU FOR PZZ450-455.
GALE WARNING FROM 1 PM SUN TO 5 AM PDT TUE FOR PZZ470.
SMALL CRAFT ADVISORY FROM 8 PM THIS EVENING TO 8 AM PDT SUN FOR PZZ475.
GALE WARNING FROM 8 AM SUN TO 5 AM PDT THU FOR PZZ475.
&&

$$

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