textproduct: Eureka

SYNOPSIS

Overcast conditions along the coast with clear skies inland are expected through the weekend. A cold front arrives to the area early next week increasing rain chances and the likelihood for stronger northwest winds.

LONG TERM

A cold front arriving to NW CA Monday will lower temperatures, promote windy conditions for the entire CWA, and increase rain chances for Del Norte and Humboldt Counties. Temperatures will drop through next week bottoming out Tuesday as inland temp will struggle to break 70F. A warming trend is expected through the end of the coming week. Rain next week looks to be slightly variable still as the GFS and ECMWF ensembles both show slightly different paths for the cold front. This is resulting in a range of precipitation values between 0.10"-0.25" for the entire North Coast. Some of the more extreme model outputs shows totals in Del Norte County up to 0.50-0.80". Along with the potential rain, winds will rebuild over the area through the coming week. The forecast calls for gusts between 20-30mph with NBM data showing a 20- 40% chance of exposed ridges reaching 40mph. DS

AVIATION

LIFR ceilings along coastlines and within coastal river valleys are expected to continue through the morning. Slight clearing is expected Sat. midday for the river valleys, yet there is less forecast confidence for the direct coastline including KCEC and KACV with IFR to MVFR OVC conditions expected. The Russian River Valley is showing overcast conditions likely via nighttime satellite imagery. Southerly winds will continue at KUKI through the night. Calm winds are expected through the TAF period for inland terminals. DS

MARINE

Strong northerly winds finally are beginning to east to moderate breezes in the coastal waters. Southerly winds are expected nearshore where fog is expected to be the most thick with M1/4nm visibility possible early morning. Seas remain elevated through the day as short period seas lag in decreasing their strength. As high pressure shifts eastward, the surface pressure gradient relaxes, lowering winds through the weekend. Seas also continue to subside this weekend and into early next week.

Winds and seas increase again Monday night through next week as a weak cold front sweeps over the coastal waters. The forecast for these winds shows more NW winds instead of the N winds that were present all last week. Expect these to build substantially through the week, especially for the southern outer waters where there is an 80-100% probability of gale force winds developing by Tuesday. A NW swell this weekend will mix with fresh NW short period seas making a relatively chaotic sea state as combined sea heights build up to 16ft through the coming week. DS

EKA WATCHES/WARNINGS/ADVISORIES

CA... None. NORTHWEST CALIFORNIA COASTAL WATERS... Small Craft Advisory until 3 AM PDT Saturday for PZZ450-455.

Hazardous Seas Warning until 9 AM PDT Saturday for PZZ470- 475.