textproduct: Eureka

SYNOPSIS

Seasonably warm and dry conditions will build through midweek with gusty north wind along shore each afternoon.

KEY MESSAGES

-Gusty north winds each afternoon along shore through mid week.

-Gradual warming and drying trend.

-Potential drizzle late week.

DISCUSSION

Cool and generally moist conditions have persisted behind Friday's cold front with gust north winds along shore and scattered skies across the interior. Where skies are clear enough over the drier, eastern interior, some valleys could see lows into the the upper 30s tonight, though the short night will limit any frost formation.

Over the coming days, high pressure will form over the eastern pacific and align with shore. This will help create strong, persistent north wind along shore and across exposed areas of the interior. Coastal headlands and peaks will likely sea gusts in excess of 30 mph each afternoon. It will also help build very mild high pressure over the interior, generally warming conditions to seasonable highs in the 80s. The wind combined with a generally weak inversion will most likely promote only a weak and mostly diurnal marine layer. These conditions will begin to build SUnday and the continue through most of the week.

Looking at the extended forecast, most ensemble models show a quick moving trough clipping the area around next Friday. As the trough approaches, more clouds will build in, helping to slightly cool conditions once again. A stronger marine layer is likely along shore around Thursday ahead of the trough. If the enough moisture can build along shore, another round of drizzle is likely, though chances for any wetting rain remain low (less than 15%). /JHW

AVIATION

Strong north winds combined with unstable air in the wake of Fridays cold front has allowed for conditions to clear to VFR all across the area with some scattered ceilings above 3 kft. Moderate north winds persisting overnight will most likely allow VFR conditions to continue, though thee is slight (20%) potential or localized IFR fog along the coast and and valleys where winds get calm enough. Any such conditions will quickly clear back to VFR on Sunday. /JHW

MARINE

Strong north winds have rapidly built behind Friday's cold front. By later this evening, widespread gusts over 21 kts should be expected in the outer waters. Winds will only increase Sunday with gale to near gale force gusts throughout the outer waters, but especially in the southern outer waters, by Sunday evening. Very steep short period seas in excess of 12 feet will build. The inner waters will also see strong winds with hazardous seas pushing close to shore from the outer waters. Gale conditions will be very prolonged and will most likely persist through at least Wednesday and maybe longer. /JHW

EKA WATCHES/WARNINGS/ADVISORIES

CA... None. NORTHWEST CALIFORNIA COASTAL WATERS... Small Craft Advisory from 9 PM this evening to 3 PM PDT Tuesday for PZZ450.

Small Craft Advisory until 3 PM PDT Tuesday for PZZ455.

Small Craft Advisory until 3 PM PDT Sunday for PZZ470.

Gale Warning from 3 PM Sunday to 3 PM PDT Tuesday for PZZ470.

Small Craft Advisory until 9 AM PDT Sunday for PZZ475.

Gale Warning from 9 AM Sunday to 3 PM PDT Tuesday for PZZ475.