Area Forecast Discussion
Issued by NWS Eureka, CA

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FXUS66 KEKA 271202
AFDEKA

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE EUREKA CA
402 AM PST TUE JAN 27 2015

.SYNOPSIS...AN AREA OF LOW PRESSURE OVER SOUTHERN CALIFORNIA WILL
SEND CLOUDS AND SCATTERED LIGHT SHOWERS ACROSS THE NORTHWEST CA
INTERIOR TODAY. DRY CONDITIONS ARE EXPECTED WEDNESDAY INTO THE
WEEKEND AS A RIDGE MOVES OVER NORTHERN CALIFORNIA.

&&

.DISCUSSION...CLOUDS ASSOCIATED WITH A WEAK TROUGH IN CONJUNCTION
WITH A CUT OFF LOW JUST OFF OF SOUTHERN CALIFORNIA ARE MOVING
ACROSS THE REGION. THESE CLOUDS COULD PROVIDE A FEW SPRINKLES OR
A LIGHT RAIN SHOWERS TO THE EASTERN REACHES OF THE FORECAST AREA
LATER TODAY. THE MODELS CONTINUE TO BE IN GOOD AGREEMENT SHOWING
RAINFALL AMOUNTS WILL BE MINIMAL, IF ANY. THIS IS BECAUSE THERE IS
VERY LITTLE MOISTURE WITH BOTH THE LOW AND THE TROUGH. SO EXPECT
A MIX OF MID AND HIGH CLOUDS THROUGHOUT THE DAY. DRY CONDITIONS
WILL RETURN WEDNESDAY AND CONTINUE INTO THE WEEKEND AS A RIDGE
MOVES BACK OVER NORTHERN CALIFORNIA. BY EARLY NEXT WEEK THE MODELS
ARE HINTING AT THE RIDGE WEAKENING AND MOVING EASTWARD AS A TROUGH
DEVELOPS OFFSHORE. THIS PATTERN CHANGE WOULD BRING US COOLER
TEMPERATURES AND WETTER CONDITIONS. GIVEN THE UNCERTAINTY THAT
FAR OUT, KEPT POPS NEAR CLIMO FOR DAYS 6 AND 7 AND WENT WITH LOWER
POPS FOR DAY 8 AS MODELS HINT AT YET ANOTHER RIDGE BUILDING.

&&

.AVIATION...CONDITIONS VARIED ACROSS THE REGION EARLY THIS MORNING
WITH HIGH CLOUD COVER BLANKETING NORTHERN CALIFORNIA AND POCKETS OF
STRATUS IMPACTING PARTS OF THE COAST AND INTERIOR VALLEYS. PERIODS
OF OFFSHORE FLOW ALLOWED FOR IMPROVEMENT YET SOME COASTAL AREAS
REMAINED INUNDATED WITH LIFR TO IFR CONDITIONS. CONDITIONS WILL
GRADUALLY IMPROVE FOR AIRFIELDS IMPACTED BY STRATUS EARLY THIS
AFTERNOON AS A PASSING LOW PRESSURE SYSTEM HELPS CEILINGS LIFT.
EXPECT MOST OF CALIFORNIA TO EXPERIENCE VFR TO MVFR CONDITIONS BY
THIS AFTERNOON. KML


&&

.MARINE...A WEAK PRESSURE GRADIENT WILL MAINTAIN LIGHT TO MODERATE
SOUTHERLY WINDS ACROSS THE COASTAL WATERS TODAY. RIDGING BEHIND A
PASSING LOW PRESSURE SYSTEM WILL CAUSE WINDS TO TURN NORTHERLY LATE
WEDNESDAY INTO THURSDAY. A SMALL CRAFT ADVISORY MAY BE NEEDED LATE
IN THE WEEK AS THE BUILDING RIDGE TIGHTENS THE PRESSURE GRADIENT.
THE HIGHEST WINDS WILL BE LOCATED WELL OFFSHORE LATE THURSDAY
THROUGH FRIDAY. LIGHT TO MODERATE WINDS WILL DEVELOP OVER THE
WEEKEND AS THE GRADIENT WEAKENS ONCE AGAIN WITH A PASSING LOW
PRESSURE SYSTEM. MEANWHILE, A WESTERLY SWELL SYSTEM WILL GRADUALLY
DECAY THROUGH THE WEEK WHILE A SECONDARY WESTERLY SWELL WILL ARRIVE
WEDNESDAY AND BUILD ACROSS THE COASTAL WATERS THROUGH THE WEEKEND.
THERE IS A THREAT OF SNEAKER WAVES WITH THE FORERUNNERS OF THIS
SWELL ON WEDNESDAY BUT THE RISK SHOULD BE LOW AS ADDITIONAL WAVE
SYSTEMS WILL LIKELY CONTAMINATE THE WAVE ENVIRONMENT. NEVER THE
LESS WE WILL CONTINUE TO MONITOR THE DATA. KML


&&

.EKA WATCHES/WARNINGS/ADVISORIES...
CA...NONE.
NORTHWEST CALIFORNIA COASTAL WATERS...NONE.
&&

$$

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