Point St. George to Cape Mendocino CA out 10 NM Marine Forecast
| Today...S Wind 15 To 20 Kt. Seas 12 Ft. Wave Detail: Sw 4 Ft At 6 Seconds And W 12 Ft At 14 Seconds. Showers. |
| Tonight...S Wind 10 To 15 Kt. Seas 9 Ft. Wave Detail: Sw 4 Ft At 6 Seconds And W 9 Ft At 13 Seconds. |
| Tue...S Wind 5 To 10 Kt. Seas 9 Ft. Wave Detail: Sw 2 Ft At 5 Seconds And W 9 Ft At 14 Seconds. |
| Tue Night...S Wind 5 To 10 Kt. Seas 9 Ft. Wave Detail: Sw 2 Ft At 4 Seconds And W 9 Ft At 14 Seconds. |
| Wed...S Wind 10 To 15 Kt. Seas 9 Ft. Wave Detail: Sw 3 Ft At 5 Seconds And W 9 Ft At 13 Seconds. |
| Wed Night...S Wind 5 To 10 Kt. Seas 10 Ft. Wave Detail: Sw 3 Ft At 6 Seconds And W 10 Ft At 15 Seconds. |
| Thu...S Wind 5 To 10 Kt. Seas 11 Ft. Wave Detail: Sw 3 Ft At 5 Seconds And W 11 Ft At 15 Seconds. |
| Thu Night...S Wind 15 To 20 Kt. Seas 10 Ft. Wave Detail: Sw 3 Ft At 5 Seconds And W 10 Ft At 15 Seconds. A Chance Of Rain. |
| Fri...S Wind 20 To 25 Kt. Seas 12 Ft. Wave Detail: Sw 9 Ft At 8 Seconds And W 10 Ft At 16 Seconds. Rain Likely. |
| Fri Night...S Wind 20 To 25 Kt. Seas 10 Ft. Wave Detail: Sw 7 Ft At 8 Seconds And W 8 Ft At 15 Seconds. Rain Likely. |
| Area Forecast Discussion National Weather Service Eureka CA 1237am PST Monday Nov 9 2026 .KEY MESSAGES... * Light rain today, mainly in Del Norte and northern Humboldt counties. * Minor coastal flooding is likely around Humboldt Bay today and Tuesday. * Stronger storm systems with more widespread rain possible Friday and Saturday. Synopsis A trough moving through the area today is expected to bring rain to mainly Del Norte and northern Humboldt counties this morning and into the afternoon. Tuesday through Thursday mainly dry weather and unseasonably warm temperatures are expected. Friday and into the weekend models are coming into better agreement on warm system bringing more widespread rain. An upper level trough and associated frontal boundary are approaching the area. Southerly winds are expected to increase early in the morning. Early to mid-morning rain showers are expected to start moving into Del Norte county. These are expected to spread south into northern Humboldt county, but weaken rapidly. A few showers are possible in western Trinity county and southern Humboldt county. Areas farther south and east will see a mix of sun and clouds, but mainly dry conditions. Warm temperatures are expected in these areas with highs in the 60s to low 70s. Monday night the showers are expected to come to an end, but areas that saw some and nearby areas are expected to see fairly widespread low clouds and fog. Tuesday through Thursday an upper level trough starts to approach the area, but then becomes a cutoff low and drops south keeping most if not all of the precipitation off the coast. This allows a ridge to build over the area bringing unseasonably warm temperatures to the inland areas. There are still some questions on how much moisture will linger. There will likely be some low clouds and fog in the valleys, although it uncertain how far south and east these will make it. Locations with valley clouds will likely be slow to warm up and not reach their forecasted high temperatures. Models have come into better agreement on the potential for heavier rain moving into the area Friday or Friday night and continuing through Saturday night. The probability of over an inch of rain in the 48 hours ranges from 40 percent in eastern Lake county to 70 percent in Fort Bragg, 50 Percent in Weaverville and 80 to 90 percent in Humboldt and Del Norte counties. This is for the 48 hour period from 4AM Friday through 4AM Sunday. The current NBM shows rainfall totals for 1 to 3 inches for this period. This system looks warm with snow levels over 7,000 feet. Gusty south winds are expected with this as well. This still may end up weakening some, but confidence is starting to increase that we will see the first significant rain in while. Marine The winds are turning southerly as a trough approaches the area. These are expected to increase to around 15 to 20 in the northern waters and lighter farther south. This will generate some 3 to 5 foot wind waves. The swell has diminished and is expected to be around 12 to 14 at 14 seconds by morning. This will continue to diminish through the day. Tuesday southerly winds are expected to diminish before increasing again on Wednesday to around 10 to 20 kt. These winds are expected to diminish for Thursday before increasing late in the week as stronger storms move through the area. For much of the week the northwest swell is expected to persist around 8 to 12 feet at 12 to 15 seconds as new waves reinforce the existing swell. A larger swell is expected again for the weekend. MKK Coastal Flooding Water levels inside Humboldt Bay continue to run 1.2 to 1.3 feet over the astronomical tides. Winds are becoming southerly again and these are expected to increase towards morning increasing the water levels slightly more. The water levels are expected to be right around 8.8 feet although it is possible they could reach nearly 9.0 feet if the southerly winds increase the water levels more significantly than expected. MKK .EKA WATCHES/WARNINGS/ADVISORIES... CA... Coastal Flood Advisory from 10am this morning to noon PST today for CAZ103. NORTHWEST CALIFORNIA COASTAL WATERS... Coastal Flood Advisory from 10am this morning to noon PST today for PZZ415. Small Craft Advisory until 9pm PST this evening for PZZ450- 455-470-475. For forecast zone information see the forecast zone map online: https://www.weather.gov/images/eka/zonemap.png |
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