Marine Weather Net

Point St. George to Point Arena between 60 and 150 NM Offshore Forecast


TONIGHT

N
WINDS
15 - 25
KNOTS

TUE

N
WINDS
10 - 20
KNOTS

TUE NIGHT

N
WINDS
10 - 20
KNOTS

WED

N
WINDS
10 - 20
KNOTS

The Marine Weather Forecast In Detail:
PZZ820 Forecast Issued: 253 PM PDT Mon Oct 12 2026

Tonight...N Winds 15 To 25 Kt. Seas 7 To 11 Ft.
Tue...N Winds 10 To 20 Kt. Seas 6 To 9 Ft.
Tue Night...N Winds 10 To 20 Kt. Seas 6 To 8 Ft.
Wed...N Winds 10 To 20 Kt. Seas 6 To 8 Ft.
Wed Night...N Winds 15 To 20 Kt. Seas 6 To 8 Ft.
Thu...N Winds 10 To 20 Kt. Seas 6 To 8 Ft.
Thu Night...N Winds 10 To 20 Kt. Seas 6 To 7 Ft.
Fri...N Winds 10 To 20 Kt. Seas 5 To 7 Ft.
Fri Night...N Winds 10 To 20 Kt. Seas 5 To 7 Ft.
Sat...N Winds 10 To 20 Kt. Seas 6 To 8 Ft.
Sat Night...N Winds 15 To 20 Kt. Seas 8 To 9 Ft.
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Area Forecast Discussion
National Weather Service Eureka CA
200pm PDT Monday Oct 12 2026

.KEY MESSAGES... * Another cold morning is expected Tuesday with areas of frost and freezing potential.

* Dry conditions will lead to areas of low relative humidities through the week.

* A warming trend is expected to impact the area through the week into the weekend, peaking on Friday.

Synopsis
Clear skies and seasonable temperatures are expected today. Another chilly morning is forecast for Tuesday morning with areas of Frost and Freezing potential. A warming trend will increase temperatures through the week.

Last weekend, a cold front brought cooler and dry air to the area. This system disrupted the marine layer allowing for clear skies at the coast through early this week as steady light offshore winds overnight continue. Clear skies and light wind will allow for uninterrupted cooling in the valley floors. Frost Advisories and Freeze Warnings have already been issued for many interior valleys from 1 A.M. through 8 A.M. Tuesday morning. Wednesday night should be warm enough to have much less impacts from cooler temperatures as temperatures could struggle to reach or go below 32F.

Through the week, a slight warming trend will take effect due to a building upper level ridge. This weather pattern will result in calm, chilly conditions with building winds in the afternoon as daytime heating takes effect. Inland heating is likely to peak Thursday and Friday with valleys reaching the high 80s to low 90s again. Winds will be mostly terrain driven with upslope - upvalley flow. Relative Humidities will reach a minimum late week with widespread areas of RH values <20%. however, winds ware likely to remain terrain-driven and light to moderate late week.

This coming Sunday into next Monday, Ensemble clusters show an upper level trough and an associated cold front entering the area. Both the GEFS and EPS support this as well. This system is 7days out and could change substantially through the week. Most of this system's rain would fall in the northern counties of Del Norte, Humboldt, and Trinity where some of the highest ridges above 4000ft could see very light snow whereas Mendocino and Lake counties are more likely to see moderate to strong NW winds if this system remains on track. This system is capable of changing and updates can be expected through the week. DS

Marine
Gale force winds have decreased through the morning leading to wave heigheights decreasing sooner than expected. Widespread small craft advisories remain as waves continue to be steep. A fairly sizable NW swell has also entered the waters which is currently being recorded at 7ft @ 17s. Moderate to fresh breezes are likely to develop leading to a continued lowering of short period seas and the overall sea state. This NW swell is likely to wane to 4-5ft and mix with a S swell of 3-4ft through the week. DS

Fire Weather
Multiple days of cool but dry air has lowered ERC values. Much weaker, terrain-driven winds and an increasingly stable atmosphere in the coming days will help greatly reduce overall fire danger. However, dry conditions are expected through the week (around 20% RH each day) with worsening overnight recoveries through Thursday as midslope thermal belts develop. Smoke transport will also worsen through the week for any fires that do start. More moist air is expected to push across the area this weekend with a potential for very breezy conditions in Mendocino and Lake county late this weekend into early next week. DS

.BEACH HAZARDS...A long period swell currently up to about 7 feet at 17 seconds will persist through the day Monday. As short period seas begin to fall, this swell will provide and increasing sneaker wave risk through the day. The swell will begin to decay Tuesday. The sneaker wave risk will lessen as the swell decays, but will remain through midweek especially as short period seas calm.

The highest risk is expected during periods of incoming tides. With high tides along the California coast at around 11am to 1pm. A positive tidal anomaly is yielding tides around 1-1.2 feet higher than predictions on top of higher than usual tides, adding to the threat. /JHW.

.EKA WATCHES/WARNINGS/ADVISORIES... CA... Beach Hazards Statement until 10pm PDT this evening for CAZ101-103-104-109.

Frost Advisory from 1am to 8am PDT Tuesday for CAZ103-104- 106-108>111-114-116>118.

Freeze Warning from 1am to 8am PDT Tuesday for CAZ108-110- 111-114-116-117.

NORTHWEST CALIFORNIA COASTAL WATERS... Small Craft Advisory until 3am PDT Tuesday for PZZ450-455.

Small Craft Advisory until noon PDT Tuesday for PZZ470-475.

For forecast zone information see the forecast zone map online: https://www.weather.gov/images/eka/zonemap.png