Area Forecast Discussion
Issued by NWS Eureka, CA

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000
FXUS66 KEKA 061155
AFDEKA

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE EUREKA CA
355 AM PST FRI MAR 6 2015

.SYNOPSIS...HIGH PRESSURE WILL PERSIST OVER NORTHWEST CALIFORNIA
THROUGH EARLY NEXT WEEK BRINGING DRY CONDITIONS AND A GRADUAL
WARMUP THROUGH THIS WEEKEND. OVERNIGHT LOW TEMPERATURES WILL
REMAIN COOL WITH FROST DEVELOPING IN SOME AREAS OF NORTHWEST
CALIFORNIA INTO THE WEEKEND.

&&

DISCUSSION...HIGH PRESSURE WILL PERSIST OVER THE WEST COAST
THROUGH EARLY NEXT WEEK RESULTING IN DRY WEATHER AND ABOVE NORMAL
HIGH TEMPERATURES FOR INTERIOR AREAS. MAX TEMPERATURES IN THE
INTERIOR WILL LIKELY TOP OUT IN THE MID TO UPPER 70S OVER THE
WEEKEND AS A STRONG RIDGE ALOFT BUILDS. WITH CLEAR SKIES...DRY AIR
AND LIGHT WINDS LATE NIGHT/EARLY MORNING TEMPERATURES WILL STILL
BE ON THE CHILLY SIDE WITH SOME FROST EXPECTED IN THE INTERIOR
VALLEYS. A FROST ADVISORY CONTINUES THIS MORNING FOR INTERIOR
MENDOCINO COUNTY WITH OVERNIGHT LOWS BOTTOMING OUT IN THE LOWER
TO MID 30S THIS MORNING. WE MAY HAVE ONE MORE MORNING COLD ENOUGH
TO WARRANT A FROST ADVISORY OVER INTERIOR MENDOCINO COUNTY. WITH
THE WARMING IT WILL LIKELY BE THE LAST ONE FOR THIS WEEK. THERE
WILL NO DOUBT BE LOCALIZED COLD SPOTS THAT WILL CONTINUE TO SEE
FROST EACH AND EVERY NIGHT UNTIL CLOUDS AND/OR DEW-POINTS
INCREASE.

COASTAL AREAS PROBABLY WILL NOT EXPERIENCE SIGNIFICANT WARMING
THIS WEEKEND AS LIGHT NORTHERLY FLOW DEVELOPS AND BOUNDARY LAYER
HUMIDITIES INCREASE EACH DAY. THE WEAK NORTH FLOW AND A STRONGER
MARINE INVERSION WILL BRING THE POTENTIAL FOR COASTAL LOW CLOUDS
AND SOME PATCHY FOG OVER THE WEEKEND.

BOTH THE GFS AND ECMWF REMAINED CONSISTENT WITH THE RIDGE
SHIFTING TO OUR EAST ON TUE AS AN UPPER TROUGH APPROACHES FROM THE
WEST. BOTH MODELS BRING THIS LOW PRESSURE SYSTEM TOWARD THE WEST
COAST THROUGH MID WEEK AND NOW SEEMED TO BE CONVERGING ON A
SOLUTION OF MIDDAY WEDNESDAY FOR A COLD FRONT APPROACHING THE
COAST. THE FRONT IS PROGED TO MOVE ACROSS NW CA THROUGH THE
AFTERNOON OR EVENING WEDNESDAY. WE WILL LIKELY SEE SOME PRECIP
WED AND THU NEXT WEEK. MKN

&&

.AVIATION...VFR CONDITIONS ARE EXPECTED THRU THE DAY WITH LIGHT
WINDS. MODELS ARE HINTING AT THE POTENTIAL FOR SOME SEA FOG
DEVELOPING ALONG THE REDWOOD COAST EARLY SAT MORNING. AT THE
LEAST...ENUF LOW LEVEL MOISTURE SHOULD BE PRESENT FOR SOME
RADIATIONAL FOG TO FORM AFTER MIDNIGHT. HAVE INCLUDED MVFR
VISIBILITY AT KACV WITH A SCATTERED DECK AT 100 FT. /SEC

&&

.MARINE...LIGHT WINDS WILL BECOME N AND GRADUALLY INCREASE TODAY.
SPEEDS ARE EXPECTED TO APPROACH LOW-END SMALL CRAFT ADVISORY
CRITERIA BY LATE TONIGHT OVER THE OFFSHORE WATERS. HOWEVER...AS
THESE WINDS WILL JUST TOUCH ADVISORY CRITERIA...WILL HOLD OFF ON ANY
ADVISORIES AND...IN FACT...NONE MAY BE NEEDED. WINDS SHOULD EASE BY
SAT NIGHT AND REMAIN LIGHT THRU TUE. WINDS ARE PROGGED TO BECOME S
AND INCREASE TUE NIGHT INTO WED AS LOW PRESSURE DEEPENS WELL NW OF
THE AREA. 2 WNW SWELL TRAINS ARE FORECAST TO IMPACT THE AREA OVER
THE NEXT SEVERAL DAYS. THE 1ST IS ONGOING WITH PERIODS OF 14 TO 15
SECONDS. ANOTHER TRAIN WILL ARRIVE BY SAT NIGHT WITH INITIAL PERIODS
AROUND 16 SECONDS. A BACKGROUND SW SWELL AROUND 3 FT WILL GRADUALLY
SUBSIDE THRU THE PERIOD. /SEC

&&

.EKA WATCHES/WARNINGS/ADVISORIES...
CA...
     FROST ADVISORY UNTIL 8 AM PST THIS MORNING FOR CAZ076.

NORTHWEST CALIFORNIA COASTAL WATERS...NONE.
&&

$$

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