Point St. George to Cape Mendocino CA out 10 NM Marine Forecast
| Rest Of Today...Nw Wind 5 Kt. Seas 6 Ft. Wave Detail: Nw 5 Ft At 7 Seconds And Nw 5 Ft At 11 Seconds. |
| Tonight...Nw Wind 5 Kt. Seas 6 Ft. Wave Detail: N 3 Ft At 6 Seconds And Nw 5 Ft At 11 Seconds. |
| Wed...Sw Wind 10 To 15 Kt. Seas 5 Ft. Wave Detail: Nw 2 Ft At 7 Seconds And Nw 5 Ft At 10 Seconds. Patchy Fog. |
| Wed Night...W Wind 5 To 10 Kt. Seas 6 Ft. Wave Detail: Nw 6 Ft At 9 Seconds. Patchy Fog. |
| Thu...N Wind 15 To 20 Kt. Seas 6 Ft. Wave Detail: Nw 6 Ft At 9 Seconds. |
| Thu Night...N Wind 10 To 15 Kt. Seas 7 Ft. Wave Detail: Nw 7 Ft At 8 Seconds. |
| Fri...N Wind 10 To 15 Kt. Seas 7 Ft. Wave Detail: N 7 Ft At 9 Seconds. |
| Fri Night...N Wind 10 To 15 Kt. Seas 7 Ft. Wave Detail: Nw 7 Ft At 9 Seconds And Nw 5 Ft At 17 Seconds. |
| Sat...Nw Wind 5 To 10 Kt. Seas 9 Ft. Wave Detail: N 6 Ft At 7 Seconds And Nw 7 Ft At 15 Seconds. |
| Sat Night...Sw Wind 5 Kt. Seas 8 Ft. Wave Detail: N 3 Ft At 7 Seconds And Nw 7 Ft At 14 Seconds. |
| Area Forecast Discussion National Weather Service Eureka CA 1237am PDT Tuesday September 23 2025 Synopsis Warmer and drier weather will gradually build in through late Tuesday. A troughing pattern could emerge by mid week with a cut off low over coastal central/southern CA. High pressure will continue to push into the region early this week allowing interior highs to crest back into the 90s with warmer interior valleys potentially getting into the low 100s by Tuesday. The marine layer onshore will likely become more diurnal with better clearing in the afternoon, but with shallow fog and stratus overnight, especially in wind protected areas such as Humboldt Bay. A closed low pressure system is forecast to approach central and southern California by Wednesday. Recent model guidance indicates there is less than a 10 percent chance for wetting rain across Northwest California as this low moves through to the south. However, there could still be showers or a stray isolated thunderstorm for extreme southern Mendocino and extreme southern Lake counties. The southern counties of our forecast region (Mendocino and Lake) are projected to be on the extreme northern edge of the moisture around this closed low system. As a result, impacts can still be uncertain due to the region being on the periphery of the low. Generally moderated temperatures and greater cloud cover are more certain. Also, the low will still pull up moisture form the south, but the general northeast flow around the low will not be favorable for widespread wetting rain. Showers that do form will most likely be around the rim of the Sacramento Valley where the wind best aligns with topography as orographic lift will mostly be a storm catalyst. The vast majority of models suggest a cooler and more moist pattern through the end of the month, with long range data showing above normal precipitation. Marine Northerly winds peaked Monday evening, and are dropping in speed as the pressure gradient weakens from surrounding troughing. Steep, wind driven seas are also subsiding, and will drop below 10 ft in the outer zones (over 10 nm offshore) by late Tuesday morning. High pressure will then nose back from the west in Thursday, strengthening the pressure gradient against a cutoff upper low over CEN CA. Southerly return flow will develop along the coast on Wednesday. Northerly winds will strengthen Thursday through Friday in response. Gale condition are looking more likely in the outer zones. NBM now holds a 40 to 55% chance for gales late Thursday and Friday. Steep seas are currently forecast to build to 10-13 ft in the outer waters through that period. Fire Weather High pressure building early this week continues to quickly warm and dry conditions. Highs will likely peak Tuesday with the hottest valley just shy of 100 and min RH in the upper teens. Northeast afternoon winds will also be slightly enhanced Tuesday afternoon around the rim of the Sacramento Valley with some gusts in Lake County likely up to 20 mph. Conditions will slightly ease (particularly daytime RH) Wednesday and beyond. There is a very slight chance of thunderstorms for extreme southern Mendocino and Lake Counties Wednesday afternoon/evening, yet convective allowing models are uncertain that there will be the right mix of atmospheric ingredients to create these storms. .EKA WATCHES/WARNINGS/ADVISORIES... CA... None. NORTHWEST CALIFORNIA COASTAL WATERS... Small Craft Advisory until 3am PDT Tuesday for PZZ455. Small Craft Advisory until 11am PDT Tuesday for PZZ470-475. For forecast zone information see the forecast zone map online: https://www.weather.gov/images/eka/zonemap.png |
Eureka CA Radar
Pacific Southwest Radar