934
FXUS66 KEKA 202322
AFDEKA
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE EUREKA CA
322 PM PST THU FEB 20 2025
SYNOPSIS
WARMER AND DRIER WEATHER WILL CONTINUE THROUGH FRIDAY.
RAIN WILL RETURN THIS WEEKEND WITH WAVES OF SHOWERS AND GUSTY SOUTH
WIND CONTINUING INTO MUCH OF NEXT WEEK FOCUSED ON THE NORTH COAST.
DISCUSSION
A TRANSIENT RIDGE HAS TILTED OVER THE AREA
TODAY AND HAS HELPED TO CREATE SLIGHTLY WARMER CONDITIONS THIS
AFTERNOON WITH HIGHS IN THE LOW 60S ACROSS MOST INTERIOR VALLEYS. IN
A NICE CHANGE OF PACE, SKIES HAVE MOSTLY CLEARED EVEN ALONG THE
COAST. WARMING IS EXPECTED TO CONTINUE TOMORROW WITH VALLEYS AROUND
UKIAH POSSIBLY (20% CHANCE) EVEN REACHING 70. HIGH PRESSURE WILL
LIKELY ALLOW FOR A SHALLOW AND INCONSISTENT MARINE LAYER TO FORM AT
THE COAST OVERNIGHT, KEEPING CONDITIONS COOL AND MOIST.
THE RIDGE WILL NOT LAST LONG WITH A SERIES OF SHALLOW SHORTWAVES
EXPECTED THIS WEEKEND INTO EARLY NEXT WEEK. THESE SHORTWAVES WILL
MOSTLY BE FOCUSED NORTH OF THE AREA WITH HEAVIEST RAIN ALONG THE
NORTH COAST. THE FIRST WAVE AROUND SATURDAY NIGHT WILL MOST LIKELY
BRING 1 TO 2 INCHES ALONG THE COAST WITH LITTLE MORE THAN LIGHT
WETTING RAIN FURTHER SOUTH. AMOUNTS WILL BE LOCALLY LESS AT LOWER
ELEVATIONS SUCH AS HUMBOLDT BAY WITH HIGHER AMOUNTS LOCALIZED AND
DEL NORTE. WHILE GUSTY SOUTH WIND IS MOST LIKELY ALONG WITH EACH
WAVE, WINDS GUSTS CURRENTLY APPEAR UNLIKELY TO REACH AT ALL ABOVE 45
MPH IN POPULATED AREAS (ONLY A 25% CHANCE).
A SECOND WAVE IS EXPECTED EARLY NEXT WEEK. THIS WAVE LOOKS BOTH
WINDIER BUT DRIER THAN THE WAVE OVER THE WEEKEND. RAIN AMOUNTS WILL
AGAIN BE FOCUSED ALONG THE COAST WITH 0.5 TO 1.5 INCHES. SOUTH WIND
WILL BE ENHANCED DURING THE DAY MONDAY WITH A 50 TO 60% CHANCE OF
GUSTS OVER 45 MPH IN POPULATED AREAS, PARTICULARLY AROUND CRESCENT
CITY. WAVES OF RAIN FOCUSED ALONG THE COAST WILL MOST LIKELY
CONTINUE THROUGH NEXT WEEK. /JHW
AVIATION
EASTERLY WINDS THIS MORNING HELPED CLEAR THE TERMINALS
AT KACV AND KCEC. VFR CONDITIONS HAVE FOLLOWED SINCE AND ARE
EXPECTED TO CONTINUE THROUGH THE EVENING. A SWATH OF MID-LEVEL
CLOUDS HAS TRAVERSED THE AREA WITH SOME WISPY STRATOCU IN ITS'
WAKE. EXPECT A SIMILAR PUSH OF MID-LEVEL CLOUDS BY MIDNIGHT TONIGHT
OVER KCEC AND KACV. THE NEXT BOUT OF RAIN WILL LIKELY REDUCE
VISIBILITY SATURDAY IN THE LATE AFTERNOON. LOW PROBABILITIES OF
PRECIPITATION EXIST FRIDAY EVENING (20% PROB), USHERING IN
SATURDAY'S LOW END ATMOSPHERIC RIVER. THIS AR WILL BE CONFINED TO
LATITUDES NORTH OF 41N. WINDS WILL BEGIN TO TURN SOUTHERLY BY FRIDAY
AFTERNOON. /EYS
MARINE
NORTHERLIES ARE BUILDING WITH MOST OF THE FETCH SOUTH
OF CAPE MENDOCINO, KEEPING CONDITIONS IN THE SMALL CRAFT ADVISORY
RANGE AT 22 - 25KTS AND GUSTS UP TO 30 BY THE EVENING. ALONG WITH
SHORT PERIOD WIND WAVES, SEAS WILL BE CHARACTERIZED BY A DECAYING
MID-PERIOD WESTERLY SWELL. A PAUSE BEFORE THE NEXT RAMP UP OF WINDS
WILL BE FROM FRIDAY MORNING AROUND 14Z THROUGH FRIDAY EVENING AS THE
NEXT SYSTEM APPROACHES THE AREA. SEAS WILL REMAIN ELEVATED AS
ANOTHER LONG PERIOD WESTERLY SWELL OF 10-12 FT FILLS IN. SOUTHERLY
WINDS WILL BUILD LATE FRIDAY NIGHT AS THE FRONTAL BOUNDARY NEARS. A
SMALL CRAFT ADVISORY WILL NEED TO BE HOISTED FOR ALL AREA WATERS,
FRIDAY EVENING THROUGH THE WEEKEND AND INTO EARLY NEXT WEEK. SEAS
WILL BE CHARACTERIZED BY STEEP SOUTHERLY WIND WAVES AND ADDITIONAL
WESTERLY LONG-PERIOD SWELLS. /JB /EYS
BEACH HAZARDS
A WESTERLY SWELL OF AROUND 10-12 FT AT 16 SECONDS
IS FORECAST TO BUILD INTO THE WATERS FRIDAY. WITH LIGHT WINDS AND
MILD WEATHER EXPECTED FRIDAY, BEACHGOERS SHOULD BE CAUTIOUS AS THIS
SWELL PRESENTS A MODERATE SNEAKER WAVE THREAT. BE CAUTIOUS VISITING
STEEP BEACHES AND JETTIES AND REMEMBER TO NEVER TURN YOUR BACK ON
THE OCEAN. JB
EKA WATCHES/WARNINGS/ADVISORIES
CA...
BEACH HAZARDS STATEMENT FROM 3 AM PST FRIDAY THROUGH LATE
FRIDAY NIGHT FOR CAZ101-103-104-109.
NORTHWEST CALIFORNIA COASTAL WATERS...
SMALL CRAFT ADVISORY FROM MIDNIGHT FRIDAY NIGHT TO 6 PM PST
SATURDAY FOR PZZ450.
SMALL CRAFT ADVISORY UNTIL 3 AM PST FRIDAY FOR PZZ455.
SMALL CRAFT ADVISORY FROM 6 PM FRIDAY TO 6 PM PST SATURDAY
FOR PZZ470.
SMALL CRAFT ADVISORY UNTIL 6 AM PST FRIDAY FOR PZZ475.
VISIT US AT HTTPS://WWW.WEATHER.GOV/EUREKA
FOLLOW US ON FACEBOOK AND TWITTER AT:
HTTPS://WWW.FACEBOOK.COM/NWSEUREKA
HTTPS://WWW.TWITTER.COM/NWSEUREKA
FOR FORECAST ZONE INFORMATION
SEE THE FORECAST ZONE MAP ONLINE:
HTTPS://WWW.WEATHER.GOV/IMAGES/EKA/ZONEMAP.PNG
CLICK HERE TO GO TO PREVIOUS BULLETINS.
Main Text Page