Point St. George to Cape Mendocino CA from 10 to 60 NM Marine Forecast
| Rest Of Tonight...N Wind 5 To 10 Kt. Seas 7 Ft. Wave Detail: Nw 3 Ft At 4 Seconds And W 6 Ft At 13 Seconds. Patchy Dense Fog. |
| Wed...N Wind 5 To 10 Kt. Seas 6 Ft. Wave Detail: N 3 Ft At 4 Seconds And W 5 Ft At 12 Seconds. |
| Wed Night...Nw Wind 5 Kt. Seas 5 Ft. Wave Detail: N 3 Ft At 4 Seconds And W 4 Ft At 11 Seconds. |
| Thu...Nw Wind 5 Kt. Seas 6 Ft. Wave Detail: N 2 Ft At 3 Seconds And W 5 Ft At 10 Seconds. |
| Thu Night...N Wind 5 Kt. Seas 6 Ft. Wave Detail: N 2 Ft At 3 Seconds And Nw 5 Ft At 12 Seconds. |
| Fri...N Wind 10 To 15 Kt. Seas 6 Ft. Wave Detail: N 3 Ft At 4 Seconds And W 5 Ft At 12 Seconds. |
| Fri Night...N Wind 20 To 25 Kt. Seas 6 Ft. Wave Detail: N 5 Ft At 5 Seconds And W 5 Ft At 11 Seconds. |
| Sat...N Wind 25 To 30 Kt. Seas 9 Ft. Wave Detail: N 9 Ft At 8 Seconds And Nw 5 Ft At 11 Seconds. |
| Sat Night...N Wind 30 Kt. Seas 12 Ft. Wave Detail: N 12 Ft At 10 Seconds. |
| Sun...N Wind 25 To 30 Kt. Seas 12 Ft. Wave Detail: N 12 Ft At 10 Seconds. |
| Sun Night...N Wind 25 To 30 Kt. Seas 12 Ft. Wave Detail: N 12 Ft At 9 Seconds And Nw 6 Ft At 12 Seconds. |
| Area Forecast Discussion National Weather Service Eureka CA 1206am PDT Wednesday Mar 18 2026 Synopsis Dry weather and above-seasonable temperatures are expected to continue with widespread Minor HeatRisk for the interior through Friday. Temperatures will cool gradually this weekend and into early next week, yet remain above normal. The chance of precipitation increases by mid next week. A strong upper level ridge continues to dominate the region, leading to dry weather and well above-normal temperatures. A shallow marine layer up to 1,500 feet is currently socked along the coast and should remain through the morning. Low temperatures tonight are forecast to be in the mid to upper 40s with patchy fog along the coastal valleys, while well above normal overnight temperatures exist over the higher elevations. The 500 mb blocking pattern will continue to result in dry, abnormally warm weather through Friday at the earliest. Inland high temperatures are forecast to remain generally in the 80s degrees, with highs into low 90s in the warmest parts of the interior in southern Lake and Mendocino counties. Minor HeatRisk across the interior is expected, primarily impacting those who are extremely sensitive to heat and are without cooling or hydration. If you plan to seek a relief by recreation in an area lake, river, or stream, remember that is still March and the water is COLD. For coastal areas, mild weather will prevail with sunny afternoons. Thursday will be the warmest day for the coast, with a 25-50% chance of high temperature exceeding 70 degrees for cities and towns directly on the coast (Crescent City, Eureka, Fort Bragg, etc.). Global ensembles models and WPC 500mb clusters suggest a breakdown of the blocking ridge by the middle of next week, giving space to the upper level trough developing over the Gulf of Alaska. This change in the synoptic weather patterns will cause a gradual cooling begin on Friday. Models suggest a cold front associated with this trough will move towards NW CA through the weekend increasing the chances of precipitation (beginning on Tuesday at the earliest) and continuing the forecasted cooling trend through next week. High uncertainty remains regarding the specific details at this moment. /ZVS/DS Marine As high pressure gradually pushes east, the pressure gradient over the area has continued to weaken. This will allow for gentle to mostly calm north winds through Thursday with only locally enhanced winds to around 15 kts in the lee of Cape Mendocino. Calmer winds will remain as long as high pressure covers the area. As high pressure finally breaks down, stronger winds will begin to return first to the southern waters Friday. Stronger winds will return this weekend, with gale conditions very likely (80% chance) in the outer waters by Sunday. Calm winds will generally limit any meaningful short period seas through the week. That said a minor, long period southerly swell and modest mid period westerly swell will combine to create at least some seas up to 6 feet through mid week. Steeper short period seas will return this weekend with the wind. /JHW .EKA WATCHES/WARNINGS/ADVISORIES... CA... None. NORTHWEST CALIFORNIA COASTAL WATERS... None. For forecast zone information see the forecast zone map online: https://www.weather.gov/images/eka/zonemap.png |
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