Cape Mendocino to Point Arena CA out 10 NM Marine Forecast
| Rest Of Tonight...N Wind 20 To 25 Kt. Seas 9 Ft. Wave Detail: Nw 2 Ft At 7 Seconds And Nw 9 Ft At 10 Seconds. |
| Wed...Nw Wind 20 To 25 Kt With Gusts Up To 35 Kt. Seas 8 Ft. Wave Detail: N 3 Ft At 7 Seconds And Nw 8 Ft At 10 Seconds. |
| Wed Night...Nw Wind 15 To 20 Kt. Seas 7 Ft. Wave Detail: N 4 Ft At 7 Seconds And Nw 7 Ft At 11 Seconds. |
| Thu...Nw Wind 10 To 15 Kt. Seas 6 Ft. Wave Detail: Nw 6 Ft At 11 Seconds And Sw 2 Ft At 15 Seconds. Patchy Dense Fog. |
| Thu Night...Nw Wind 5 To 10 Kt. Seas 5 Ft. Wave Detail: Nw 5 Ft At 11 Seconds And Sw 2 Ft At 14 Seconds. |
| Fri...Nw Wind 15 To 20 Kt. Seas 7 Ft. Wave Detail: Nw 7 Ft At 10 Seconds And Sw 2 Ft At 13 Seconds. |
| Fri Night...N Wind 20 To 25 Kt With Gusts Up To 40 Kt. Seas Around 7 Ft. Wave Detail: Nw 7 Ft At 10 Seconds And S 2 Ft At 13 Seconds. |
| Sat...N Wind 15 To 20 Kt. Seas 7 Ft. Wave Detail: Nw 7 Ft At 9 Seconds And S 2 Ft At 13 Seconds. |
| Sat Night...N Wind 15 To 20 Kt. Seas 7 Ft. Wave Detail: Nw 7 Ft At 9 Seconds And S 2 Ft At 12 Seconds. |
| Sun...Nw Wind 15 To 20 Kt. Seas 6 Ft. Wave Detail: Nw 6 Ft At 8 Seconds And S 2 Ft At 13 Seconds. |
| Sun Night...N Wind 15 To 20 Kt. Seas 6 Ft. Wave Detail: Nw 6 Ft At 8 Seconds And S 2 Ft At 13 Seconds. |
| Area Forecast Discussion National Weather Service Eureka CA 250pm PDT Tuesday September 22 2026 .KEY MESSAGES... * Near to slightly above average temperatures inland continue through Wednesday with the warmest temperatures in Lake County. * A passing cold front brings a high chance (70-90%) of light rain to Del Norte and northern Humboldt late Thursday night into Friday, with lower probabilities (under 20%) south into Mendocino County. * Breezy winds possible late Thursday and into Friday. * Cooler temperatures will arrive this weekend behind the front, bringing chances for isolated interior frost. Synopsis Interior high pressure and a thermal low will maintain warm, dry conditions through Wednesday. An approaching cold front introduces more extensive cloud cover and a chance for measurable rain to Del Norte and northern Humboldt counties late Thursday night into Friday. Colder temperatures will follow through the weekend. The coastal stratus showed some weakness today, allowing for more periods of sunshine. Light coastal drizzle has accumulated up to a few hundredths of precipitation over the past two days, mainly around Humboldt Bay. More drizzle is likely tonight. Temperatures trend warmer Wednesday with a strengthening thermal trough. Low to some mid 90s are forecast for the warmer interior valleys Wednesday before a shortwave trough begins moving in. There will be a compact surface low with the trough that has the potential to bring some stronger southerly winds, especially if the track nudges south at all. NBM has moderate to high chances for gusts over 30 mph for the coastal headlands and interior ridges of northern Humboldt through Del Norte. There looks to also be a period of gusty winds in Lake County Friday. Chances for rainfall increase late Thursday with the trough and cold front. The bulk of the shortwave energy looks to likely remain north over southern Oregon, with trailing showers and some light rain for mainly northern Humboldt through Del Norte. If the system tracks farther south, than some higher rainfall amounts will be possible, especially with the associated instability. There are currently moderate to high chances for the light rainfall to generally occur. Cooler temperatures arrive Saturday morning behind the cold front passage. There will be opportunity for isolated interior frost in the colder valleys through the weekend and likely into early next week. Another trough is forest through the weekend however, and the resulting cloudcover may prevent overnight lows from getting too cold. The broader pattern will favor either zonal flow or additional troughs next week, bringing the potential for more at least light rainfall. Marine A 7 to 9 ft mid period NW swell has built into the waters. The swell is peaking this afternoon, and is combining with short period seas generated from strengthening northerly winds. Northerly winds with gale strength gusts up to near 40kts in the southern waters, around and south of the cape, are combining with the swell to create up to 11 ft seas. The northerlies begin to weaken late Wednesday. A trough will pass through late Thursday and into Friday. There will be an area of gale strength winds within a core of an area of low pressure. This may impact the northern waters as it passes. The northerlies will quickly restrengthen behind the trough Friday and through the weekend. .EKA WATCHES/WARNINGS/ADVISORIES... CA... None. NORTHWEST CALIFORNIA COASTAL WATERS... Small Craft Advisory until 9pm PDT Wednesday for PZZ455. Small Craft Advisory until 9am PDT Wednesday for PZZ470. Small Craft Advisory until 3pm PDT this afternoon for PZZ475. Gale Warning until 9pm PDT this evening for PZZ475. For forecast zone information see the forecast zone map online: https://www.weather.gov/images/eka/zonemap.png |
Eureka CA Radar
Pacific Southwest Radar