000
FXUS66 KEKA 201200
AFDEKA
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE EUREKA CA
400 AM PST TUE JAN 20 2009
.SYNOPSIS...AN UPPER LEVEL TROUGH APPROACHING THE CALIFORNIA
COAST WILL BRING CLOUDS AND A CHANCE OF SHOWERS WEDNESDAY
THROUGH SUNDAY.
&&
.SHORT TERM...TODAY THROUGH THURSDAY...STRATUS WAS LURKING 40-60NM
OFFSHORE AND MOVING PARALLEL TO COAST EARLY THIS MORNING.
A FEW HIGH CLOUDS ASSOCIATED WITH AN APPROACHING UPPER LEVEL
TROUGH WERE ALSO SKIMMING OVER THE AREA. GFS AND NAM12 BOUNDARY
LAYER RH FIELDS REMAIN QUITE DRY TODAY...BUT WILL NOT RULE OUT
PATCHY OR SCATTERED LOW CLOUD DEVELOPMENT THIS AFTERNOON. IN
ANY CASE...EXPECT IT WILL BE SUNNY FOR THE BETTER PART OF THE
DAY AFTER THE TYPICAL VALLEY FOG BURNS OFF ACROSS THE RIVER VALLEYS.
OVERNIGHT TEMPERATURES WERE RUNNING SEVERAL DEGREES LOWER MOST
EVERYWHERE...EVEN THOUGH EASTERLY WINDS WERE STILL GOING STRONG
OVER THE RIDGES. THE OFFSHORE FLOW WEAKENS TODAY AND EVEN GOES
WEAKLY ONSHORE THIS AFTERNOON. THE COOLING TREND OF DAYTIME
HIGH TEMPS WILL CONTINUE ON WEDNESDAY AS THE OFFSHORE TROUGH
SPREADS THICKER CLOUD LAYERS OVER THE AREA. RAIN CHANCES LOOK
MARGINAL...BUT THE SOUTHWEST FLOW WILL BRING MOISTURE INTO
THE REGION AND HAVE ADDED AT LEAST A SLIGHT CHANCE OF SHOWERS
TO THE FORECAST. THE RAIN CHANCES LOOK BEST ACROSS THE INTERIOR AS
THE TROUGH AXIS APPROACHES WED NIGHT. GFS HAS THE TROUGH SHEARING
APART AND MOVING OVER NORTHWEST CALIFORNIA THURSDAY MORNING...WITH
A RIDGE BUILDING BEHIND. NAM12 WAS SLOWER AND KEEPS A SEMI-CLOSE
LOW/OPEN WAVE OVER NORTHERN CALIFORNIA THROUGH THURSDAY AFTERNOON
THEREFORE WILL MAINTAIN SHOWER CHANCES THROUGH THE AFTERNOON...WITH
BEST CHANCES ACROSS THE EASTERN SECTIONS OF THE FORECAST AREA. DJB
.LONG TERM...THURSDAY NIGHT THROUGH MONDAY...OPERATIONAL MODEL RUNS
FROM THE EURO...NAM12 AND GFS WERE IN GOOD AGREEMENT ON KEEPING THE
AREA IN SEMI-MOIST SOUTHWEST FLOW ALOFT THU NIGHT THROUGH FRI. MOIST
AIR AND UPSLOPE FLOW SHOULD GENERATE ISOLATED OR SCATTERED SHOWERS
PRIMARILY OVER THE INTERIOR THU NIGHT AND FRIDAY.
SOLUTIONS CONTINUE TO STRUGGLE WITH A SECOND UPPER TROUGH EXPECTED
TO AFFECT THE FORECAST REGION SAT->SUN. GFS ENSEMBLE MEAN INDICATES
HIGHER PRECIP CHANCES FRI NIGHT AND AGAIN ON SUNDAY...AND HAVE EDGED
PRECIP CHANCES TO NEAR CLIMO THESE PERIODS. WITH THE TIMING VARYING
FROM ONE MODEL RUN TO THE NEXT AND THE VARIATIONS BETWEEN DIFFERENT
GLOBAL MODELS...CONFIDENCE IN THE CHANCE OF RAIN IS BY NO MEANS
HIGH. USED A WIDE-BROAD PAINT BRUSH APPROACH...WITH A SLIGHT CHANCE
OF SHOWERS FOR EACH INTERVENING PERIOD AND ACROSS MUCH OF THE
FORECAST AREA THROUGH MONDAY DUE TO THE UNCERTAINTY. DJB
&&
.AVIATION...SATELLITE IMAGERY AND SURFACE OBSERVATIONS TONIGHT SHOW
CLEAR SKIES ACROSS THE REGION...WITH NO CHANGE EXPECTED OVER THE
NEXT 24 HOURS. WINDS WILL REMAIN LIGHT AND OFFSHORE KEEPING COASTAL
LOCATIONS DRY AND FREE FROM FOG/STRATUS DEVELOPMENT. LOCALIZED
INLAND VALLEY LOCATIONS MAY SEE SOME FOG INTO THE MORNING HOURS.
NEXT CHANCE FOR RAIN AND WIDESPREAD LOW CIG/VSBY WILL START WED
AFTERNOON AS AN UPPER LEVEL TROF PASSES OVER THE AREA. BK
&&
.MARINE...THE COASTAL WATERS CONTINUE TO EXPERIENCE AN EXTENDED
PERIOD OF VERY LIGHT WINDS...WHICH WILL PERSIST THROUGH SATURDAY. AN
INCREASE IN NORTHERLY WINDS...WITH POSSIBLE GUSTS TO 30 KT IS
INDICATED BY THE MODELS STARTING SATURDAY NIGHT. WESTERLY SWELL
CONTINUES TO MOVE THROUGH THE WATERS TONIGHT WITH HEIGHTS RUNNING
AROUND 6 TO 7 FT AT 12 SECONDS...WITH A DECREASE IN WAVE HEIGHTS AND
PERIOD EXPECTED THROUGH THURSDAY. A WESTERLY SWELL WILL BEGIN
BUILDING THURSDAY NIGHT WITH MODEL GUIDANCE SUGGESTING A PEAK CLOSE
TO 9 FEET FRIDAY NIGHT. PERIODS WILL BE ON THE ORDER OF 14 TO 16
SECONDS. BK
&&
.EKA WATCHES/WARNINGS/ADVISORIES...NONE.
&&
$$
VISIT US AT HTTP://WWW.WEATHER.GOV/EUREKA
000
FXUS66 KEKA 192341
AFDEKA
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE EUREKA CA
341 PM PST MON JAN 19 2009
.SYNOPSIS...SUNNY SKIES AND MILD WEATHER WILL COME TO AN END ON
TUESDAY AS AN APPROACHING TROF WILL BRING INCREASING CLOUDS AND
SLIGHTLY COOLER TEMPERATURES TO THE REGION. ADDITIONAL UPPER LEVEL
TROUGHS APPROACHING THE REGION THROUGH THIS WEEKEND WILL BRING MORE
SEASONABLE TEMPERATURES AND CHANCES FOR LIGHT RAIN.
&&
.SHORT TERM...TONIGHT THROUGH THURSDAY...SATELLITE IMAGERY SHOWS A
BANK OF LOW CLOUDS ROTATING TOWARDS THE COAST OUT AHEAD OF AND
APPROACHING TROF THIS AFTERNOON. NAM12 BL RH INITIALIZED THIS AREA
FAIRLY WELL...AND ITS TRENDS ALONG WITH CURRENT SATELLITE BASED
TRENDS SHOW THIS AREA REACHING THE COAST...ESPECIALLY SOUTH OF CAPE
MENDOCINO...LATE THIS AFTERNOON AND EVENING. THE NAM12 INDICATES
WEAK OFFSHORE FLOW DEVELOPING AGAIN LATE THIS EVENING ERODING BACK
THE LEADING EDGE OF THE LOW CLOUDS AWAY FROM THE COAST OVERNIGHT.
WITH CONTINUING GOOD SUBSIDENCE FROM THE DEPARTING UPPER LEVEL
RIDGE...ANY FOG WILL BE SHALLOW AND LOCALLY DENSE.
OTHERWISE...HAVE MADE LITTLE CHANGE TO THE PRECEDING FORECAST AS
THE AFOREMENTIONED TROF CONTINUES TO MOVE TOWARDS THE CALIFORNIA
COAST...ITS EASTWARD PROGRESS SLOWS AS IT FIGHTS AGAINST THE STRONG
UPPER LEVEL RIDGE NOW OFF TO OUR EAST. MODELS ARE STILL IN GOOD
AGREEMENT SHOWING THE TROUGH SPLITTING AS IT NEARS LAND WITH THE
BULK OF ENERGY DIVERTED INTO SOUTHERN CA. THE MAIN IMPACTS FOR TUES
AND WED WILL BE INCREASING CLOUD COVER AND COOLER DAYTIME
TEMPERATURES. MODELS ARE INDICATING SOME MOISTURE BEING ADVECTED
FROM THE SOUTH REACHING INTO NW CALIFORNIA BY WED AFTN INTO
THURS...AND HAVE CONTINUED TO INDICATE NEAR OR JUST BELOW CLIMO
POPS FOR THURS. ALM
.LONG TERM...THURSDAY NIGHT THROUGH MONDAY...MODELS SHOW ANOTHER
WEAKENING UPPER LEVEL TROUGH APPROACHING THE REGION FRI. WITH THE
SPLIT FLOW PATTERN...THE ECMWF AND GFS SHOW TWO SEPARATE
CIRCULATIONS WITH THIS TROUGH. ONE JUST OFF THE WA/OR COAST AND
ANOTHER OFFSHORE AROUND 30N/130W. 20/12Z RUNS SHOW THE NRN LOW
DRIFTING S ALONG THE COAST THROUGH THE WEEKEND BEFORE MERGING WITH
THE SRN STREAM TROUGH. ALTHOUGH GFS CONTINUES TO SHOW POOR RUN TO
RUN CONSISTENCY THE OVERALL TREND FOR THE PAST FEW DAYS CONTINUES TO
BRING IT MORE IN LINE WITH ECMWF SOLUTIONS. GIVEN THE UNCERTAINTY IN
THIS CHANGING PATTERN WILL MAINTAIN SCHC POPS THROUGH THE EXTENDED.
OVERALL WILL SEE TEMPERATURES RETURNING TO SEASONAL NORMS WHILE
PRECIP CHANCES REMAIN SLIGHTLY BELOW CLIMO. BC
&&
.AVIATION...VISIBLE SATELLITE IMAGES SHOW A BROAD AREA OF STRATUS
WELL OFFSHORE...WITH BANDS APPROACHING THE COAST NEAR AND SOUTH OF
CAPE MENDOCINO. OFFSHORE FLOW IS KEEPING THE LOW CLOUDS AWAY FROM
THE COAST THIS AFTERNOON AND EXPECT THAT ANY FOG FORMATION TONIGHT
WILL BE LOCALIZED IN BOTH AREAL COVERAGE AND TIME. VFR CONDITIONS
WILL BE OCCASIONALLY BROKEN BY EPISODES OF VSBY REDUCED TO MVFR IN
FOG OR HAZE...BUT NO SIGNIFICANT DETERIORATION OF FLYING CONDITIONS
IS EXPECTED. INLAND AREAS ARE EXPECTED TO MAINTAIN VFR CONDITIONS. CC
&&
.MARINE...THE COASTAL WATERS CONTINUE TO EXPERIENCE AN EXTENDED
PERIOD OF VERY LIGHT WINDS...WHICH WILL PERSIST THROUGH THURSDAY.
A MODERATE INCREASE UP TO 10 TO 15 KT IS INDICATED BY THE MODELS FOR
LATE THURSDAY INTO FRIDAY...AND THEN AGAIN SATURDAY NIGHT INTO
SUNDAY. WESTERLY SWELL CONTINUES TO MOVE THROUGH THE WATERS TONIGHT
WITH HEIGHTS RUNNING AROUND 6 TO 8 FT AT 13 SECONDS...WITH A
DECREASE IN WAVE HEIGHTS AND PERIOD EXPECTED THROUGH THURSDAY. A
WESTERLY SWELL WILL BEGIN BUILDING EARLY FRIDAY WITH MODEL GUIDANCE
SUGGESTING A PEAK CLOSE TO 10 FEET FRIDAY NIGHT. PERIODS WILL BE ON
THE ORDER OF 14 TO 16 SECONDS. BK/CC
&&
.EKA WATCHES/WARNINGS/ADVISORIES...NONE.
&&
$$
VISIT US AT HTTP://WWW.WEATHER.GOV/EUREKA
000
FXUS66 KEKA 182306
AFDEKA
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE EUREKA CA
305 PM PST SUN JAN 18 2009
.SYNOPSIS...LITTLE CHANGE IN THE WEATHER IS EXPECTED THROUGH TUESDAY
AS HIGH PRESSURE PERSISTS ACROSS THE REGION. A WEAK TROUGH WILL
BRING COOLER WEATHER TO THE REGION WEDNESDAY.
&&
.SHORT TERM...TONIGHT THROUGH WEDNESDAY...SATELLITE IMAGERY SHOWS
THE AREA OF FOG THAT WAS OVER THE COASTAL WATERS THIS MORNING
DISSIPATING AND RETREATING TO THE NORTHWEST. ONSHORE WINDS WILL
DEVELOP AGAIN LATE THIS AFTERNOON AND SHOULD BRING THE FOG TOWARDS
THE COAST EARLY THIS EVENING. HOWEVER THE AREA OF FOG OVER THE
WATERS IS MUCH SMALLER THIS AFTERNOON THAN COMPARED TO YESTERDAY AND
THE FORECAST CONFIDENCE IN THE FOG ACTUALLY REACHING THE COAST THIS
EVENING IS LOWER. WEAK OFFSHORE FLOW WILL DEVELOP AGAIN OVERNIGHT
AND CLEAR THE SKIES ALONG THE COAST. ENHANCED RADIATION FROM THE
CLEAR SKIES WILL SUPPORT ANOTHER COOL MORNING FOR MON. CLEAR SKIES
SHOULD PREVAIL WITH THE THREAT OF AFTERNOON FOG ALONG THE COAST
THROUGH TUE AS HIGH PRESSURE PERSISTS OVER THE REGION.
THE VARYING SYNOPTIC MODELS ARE IN GOOD AGREEMENT ON AN UPPER LEVEL
TROUGH APPROACHING CA TUE. THE MODELS SHOW THE TROUGH SPLITTING AS
IT NEARS LAND WITH THE BULK OF ITS ENERGY DIVERTED TO SOUTHERN CA.
MAINLY EXPECT AN INCREASE OF CLOUD COVERAGE AND SLIGHTLY COOLER
TEMPERATURES TUE NIGHT AND WED WITH THE TROUGH PASSAGE. TH
.LONG TERM...WEDNESDAY NIGHT THROUGH SUNDAY...MODELS IN DECENT
AGREEMENT ON DEVELOPING A SPLIT FLOW PATTERN ACROSS NOAM. MODEL
CONSENSUS IS THE UPPER LEVEL TROUGH WILL WEAKEN AS IT MOVES INTO CTL
CA THU. WITH MOST OF THE ENERGY AND MOISTURE GOING INTO SOCAL
CONTINUED TO TREND BELOW CLIMO POPS FOR THU AND FRI. MODELS SHOW A
SECOND UPPER LEVEL TROUGH APPROACHING THE REGION EARLY SAT...BUT
MODELS CONTINUE TO SHOW POOR RUN TO RUN CONTINUITY. DECIDED TO
MAINTAIN POPS SLIGHTLY BELOW CLIMO THROUGH THE EXTENDED WITH A
GENERAL TREND TOWARDS COOLER AND MORE SEASONAL TEMPERATURES. BC
&&
.AVIATION...STRATUS CLOUDS HAVE MOVED WELL NORTHWEST OF THE COAST
THIS AFTERNOON. HOWEVER EXPECT TO SEE THE LAYER REFORM CLOSER TO
THE COASTLINE LATER THIS AFTERNOON OR EVENING...WITH VSBY AGAIN
DROPPING TO MVFR/IFR CONDITIONS TONIGHT INTO EARLY MONDAY MORNING.
SOME LOCAL REDUCTIONS TO LIFR ARE POSSIBLE. OTHERWISE VFR CONDITIONS
WILL AFFECT MOST OF THE AREA WITH CLEAR SKIES AND LIGHT WINDS. CC
&&
.MARINE...THE COASTAL WATERS CONTINUE TO EXPERIENCE AN EXTENDED
PERIOD OF VERY LIGHT WINDS...WHICH WILL PERSIST THROUGH LATE NEXT
WEEK. A MODERATE INCREASE UP TO 10 TO 15 KT IS INDICATED BY THE
MODELS FOR LATE THURSDAY INTO FRIDAY...AND THEN THROUGH THE WEEKEND.
WESTERLY SWELL CONTINUES TO AFFECT THE WATERS WITH HEIGHTS
RUNNING AROUND 6 TO 8 FT AT 16 SECONDS THIS AFTERNOON. EXPECT A SLOW
DIMINISHING TREND THROUGH THURSDAY. ANOTHER WESTERLY SWELL WILL MOVE
INTO THE WATERS FROM THE WNW THURSDAY INTO FRIDAY. CC
&&
.EKA WATCHES/WARNINGS/ADVISORIES...NONE.
&&
$$
VISIT US AT HTTP://WWW.WEATHER.GOV/EUREKA
000
FXUS66 KEKA 181108
AFDEKA
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE EUREKA CA
300 AM PST SUN JAN 18 2009
.SYNOPSIS...LITTLE CHANGE IN THE WEATHER IS EXPECTED THROUGH MONDAY
AS HIGH PRESSURE PERSISTS ACROSS THE REGION. A WEAK TROUGH WILL
APPROACH AROUND MID WEEK...BRINGING COOLER WEATHER CONDITIONS
TO THE REGION.
&&
.SHORT TERM...TONIGHT THROUGH TUESDAY...SATELLITE IMAGERY SHOWED
AN AREA OF GROWING FOG AND LOW CLOUDS OFFSHORE THE ENTIRE COAST.
LAYER APPEARS TO BE QUITE SHALLOW BASED ON SURFACE REPORTS OF FOG
AND VSBY DOWN TO 1/4SM AND LESS. WEAK OFFSHORE FLOW WILL KEEP THE
BULK OF FOG AND LOW CLOUD OVER THE OCEAN TODAY. LIGHT SEA BREEZES
WILL GIVE THE FOG A PUSH ONSHORE IN THE AFTERNOON AND EARLY EVENING
AND EXPECT THE FOG WILL BE DENSE AGAIN THIS EVENING. OFFSHORE WINDS
SHOULD DEVELOP TONIGHT AND SCOUR OUT THE BULK OF THE FOG ONCE AGAIN.
THIS PATTERN OF LATE AFTERNOON/EVENING FOG DEVELOPMENT ALONG THE
COAST WILL CONTINUE TROUGH AT LEAST MONDAY. AN UPPER TROUGH WILL
APPROACH ON TUESDAY AND BRING A SLIGHT DEEPENING OF THE MARINE LAYER
AND AN INCREASE IN LOW CLOUD COVERAGE TUESDAY AFTERNOON. DJB
.LONG TERM...TUESDAY NIGHT THROUGH SATURDAY...AN END TO THE
UNSEASONABLE LONG STRETCH OF WARM AND DRY WEATHER IS EXPECTED
TO BEGIN AROUND MID WEEK. MODELS WERE IN DECENT AGREEMENT ON
WEAKENING THE LONG STANDING RIDGE OVER THE WEST COAST AS AN
UPPER LEVEL TROUGH DIGS ACROSS THE EAST PACIFIC. GIVEN THE GFS
TENDENCY TO BREAK DOWN BLOCKING RIDGES TOO QUICKLY...TRENDED THE
FORECAST TOWARDS THE SLOWER ECMWF TIMING. ECMWF SHOWS THE TROUGH
WEAKENING AND SPLITTING AS IT MOVES INTO CENTRAL CAL COAST ON
WEDNESDAY...WITH MOST OF THE ENERGY AND MOISTURE GOING INTO SOUTHERN
CAL. A SECOND UPPER LEVEL TROUGH WILL APPROACH THE REGION ON FRIDAY
BUT MODELS SHOW POOR RUN TO RUN CONTINUITY. THEREFORE...WENT WITH A
NEAR CLIMO POP FORECAST THROUGH SATURDAY...WITH A GENERAL TREND
TOWARDS COOLER AND MORE SEASONAL TEMPERATURES. DJB
&&
.AVIATION...CURRENT SATELLITE SHOWS VFR CONDITIONS WIDESPREAD ACROSS
THE AREA EXCEPT NEAR AND NORTH OF CAPE MENDOCINO...WHERE COASTAL FOG
AND STRATUS IS IN PLACE. EXPECT KACV AND KCEC TO GO DOWN TO LIFR
CONDITIONS IN THE NEXT COUPLE HOURS...MAINLY IN THE FORM OF FOG BUT
CEILINGS BELOW 002 ARE NOT OUT OF THE QUESTION. WILL SEE INLAND
VALLEY FOG TONIGHT ALSO. REST OF TODAY...WITH CLEAR SKIES AND GOOD
DAYTIME HEATING EXPECT MARINE FOG/STRATUS TO MOVE BACK TOWARD THE
COAST IN THE AFTERNOON WITH THE SEA BREEZE. AS A RESULT...WILL
LIKELY SEE IFR CONDITIONS AT KACV BEGINNING AROUND 21Z. NOT LOOKING
FOR KCEC TO BE AFFECTED AT THIS TIME. GREAT FLYING CONDITIONS
EXPECTED ELSEWHERE WITH LIGHT WINDS AND CLEAR SKIES. BK
&&
.MARINE...THE COASTAL WATERS CONTINUE TO EXPERIENCE LIGHT WINDS AS
HIGH PRESSURE OVER THE WEST COAST REMAINS IN PLACE. THIS IS EXPECTED
TO PERSIST THROUGH MID TO LATE NEXT WEEK. A MODERATE INCREASE TO
AROUND 15 KT IS INDICATED BY THE MODELS FOR LATE THURSDAY INTO
FRIDAY...WITH LIGHT WINDS RETURNING FOR THE WEEKEND. LONG PERIOD
SWELL CONTINUES TO AFFECT THE WATERS WITH HEIGHTS RUNNING 6 TO 7
FT AT 14 TO 15 SECONDS TONIGHT. NOT LOOKING FOR A CHANGE IN SWELL
HEIGHTS UNTIL TUESDAY NIGHT WHEN THE WESTERLY SWELL WILL SLOWLY
SUBSIDE THROUGH THURSDAY. BK
&&
.EKA WATCHES/WARNINGS/ADVISORIES...NONE.
&&
$$
VISIT US AT HTTP://WWW.WEATHER.GOV/EUREKA
000
FXUS66 KEKA 172350
AFDEKA
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE EUREKA CA
350 PM PST SAT JAN 17 2009
.SYNOPSIS...THERE WILL BE LITTLE CHANGE IN WEATHER THE NEXT COUPLE
OF DAYS AS HIGH PRESSURE WILL PERSIST ACROSS THE REGION. A WEAK
TROUGH WILL BRING COOLER WEATHER CONDITIONS TO NORTHWEST CALIFORNIA
MID WEEK.
&&
.SHORT TERM...TONIGHT THROUGH TUESDAY...DAYTIME SUNSHINE WITH
CLEAR AND COOL NIGHTS WILL CONTINUE INTO NEXT WEEK AS HIGH PRESSURE
PERSISTS OVER THE WESTERN STATES. VISIBLE SATELLITE IMAGERY SHOWS AN
AREA OF LOW MARINE CLOUDS OFFSHORE THE DEL NORTE AND HUMBOLDT
COASTS. DIURNAL ONSHORE WINDS WILL BRING THESE LOW CLOUDS TOWARDS
THE COAST THIS AFTERNOON WITH PATCHY FOG LIKELY ALONG THE IMMEDIATE
COAST AND LOW LYING AREAS INTO THE EARLY EVENING. OFFSHORE WINDS
SHOULD DEVELOP LATER IN THE EVENING AND PUSH THE SHALLOW CLOUD LAYER
BACK TO SEA. THIS PATTERN OF LATE AFTERNOON PATCHY FOG ALONG THE
HUMBOLDT AND DEL NORTE COASTS WILL CONTINUE THE NEXT FEW DAYS SINCE
VERY LITTLE CHANGE IS EXPECTED IN THE OVERALL SYNOPTIC WEATHER
PATTERN. THE STRONG SUBSIDENCE INVERSION WILL CONTINUE INTO NEXT
WEEK AND OVERNIGHT VALLEY FOG WILL CONTINUE TO DEVELOP IN SOME OF
THE INTERIOR VALLEYS OF TRINITY AND HUMBOLDT COUNTIES. TH
.LONG TERM...TUESDAY NIGHT THROUGH SATURDAY...AN END TO THE
UNSEASONABLE STRETCH OF WARM AND DRY WEATHER IS EXPECTED EARLY IN
THE WEEK. MODEL SOLNS IN DECENT AGREEMENT IN WEAKENING THE RIDGE AS
AN UPPER LEVEL TROUGH DIGS ACROSS THE ERN PAC. GIVEN THE GFS TREND
TO BREAK DOWN BLOCKING RIDGES TOO QUICKLY TRENDED TOWARDS THE ECMWF
SOLN. THIS SHOWS THE TROUGH WEAKENING AND SPLITTING AS IT MOVES INTO
CENTRAL CA COAST WED WHILE MOST OF THE ENERGY AND MOISTURE WITH THIS
SYSTEM WILL BRING RAIN TO MUCH OF SRN CA. A SECOND UPPER LEVEL
DISTURBANCE WILL APPROACH THE REGION LATE IN THE WEEK BUT MODELS
SHOW POOR RUN TO RUN CONSISTENCY. THEREFORE...CONTINUED TO TREND
BELOW CLIMO POPS THROUGH THE EXTENDED WHERE MORE SEASONAL TEMPS ARE
EXPECTED. BC
&&
.AVIATION...STRATUS CLOUDS CONTINUE OVER THE COASTAL WATERS...MAKING
PERIODIC RUNS TOWARD THE COAST. THE COASTAL ASOS STATIONS HAVE
REMAINED MOSTLY CLEAR ASIDE FROM PERIODS OF MVFR/IFR HAZE AND MIST.
EXPECT THIS TREND TO CONTINUE DURING THE EVENING AND NIGHT
HOURS...WITH A RETURN TO VFR IN THE DAYTIME. OTHERWISE VFR
CONDITIONS WILL PREVAIL. CC
&&
.MARINE...THE COASTAL WATERS CONTINUE TO EXPERIENCE AN EXTENDED
PERIOD OF VERY LIGHT WINDS...WHICH IS EXPECTED TO PERSIST THROUGH
MID TO LATE NEXT WEEK. A MODERATE INCREASE TO AROUND 15 KT IS
INDICATED BY THE MODELS FOR LATE THURSDAY INTO FRIDAY...WITH LIGHT
WINDS RETURNING FOR THE WEEKEND. LONG PERIOD SWELL CONTINUES TO
AFFECT THE WATERS WITH HEIGHTS RUNNING AROUND 6 TO 8 FT AT 16
SECONDS THIS AFTERNOON. EXPECT A SLOW DIMINISHING TREND THROUGH THE
WEEKEND AND INTO NEXT WEEK. CC
&&
.EKA WATCHES/WARNINGS/ADVISORIES...NONE.
&&
$$
VISIT US AT HTTP://WWW.WEATHER.GOV/EUREKA
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