Cape Mendocino to Point Arena CA from 10 NM to 60 NM Marine Forecast
| Rest Of Today...Nw Wind 15 To 20 Kt, Rising To 20 To 25 Kt With Gusts Up To 35 Kt This Afternoon. Seas 7 Ft. Wave Detail: Nw 7 Ft At 7 Seconds And S 3 Ft At 17 Seconds. |
| Tonight...Nw Wind 20 To 25 Kt With Gusts Up To 35 Kt. Seas Around 7 Ft. Wave Detail: Nw 7 Ft At 7 Seconds And S 3 Ft At 17 Seconds. |
| Wed...N Wind 20 To 25 Kt. Seas 8 Ft. Wave Detail: Nw 8 Ft At 7 Seconds And S 3 Ft At 17 Seconds. |
| Wed Night...N Wind 20 To 25 Kt. Seas 9 Ft. Wave Detail: N 9 Ft At 7 Seconds And S 4 Ft At 16 Seconds. |
| Thu...N Wind 20 To 25 Kt. Seas 8 Ft. Wave Detail: N 8 Ft At 7 Seconds And S 4 Ft At 16 Seconds. |
| Thu Night...N Wind 20 To 25 Kt. Seas 8 Ft. Wave Detail: N 8 Ft At 7 Seconds And S 3 Ft At 15 Seconds. |
| Fri...Nw Wind 20 To 25 Kt. Seas 8 Ft. Wave Detail: N 8 Ft At 7 Seconds And S 3 Ft At 15 Seconds. |
| Fri Night...N Wind 20 To 25 Kt. Seas 8 Ft. Wave Detail: N 8 Ft At 7 Seconds And S 3 Ft At 14 Seconds. |
| Sat...N Wind 25 To 30 Kt. Seas 9 Ft. Wave Detail: N 9 Ft At 7 Seconds And S 3 Ft At 14 Seconds. |
| Sat Night...N Wind 25 To 35 Kt. Seas 10 Ft. Wave Detail: N 10 Ft At 9 Seconds And S 3 Ft At 13 Seconds. |
| Area Forecast Discussion National Weather Service Eureka CA 1230am PDT Tuesday July 28 2026 .KEY MESSAGES... * Moderate risk for sneaker waves along the Lost Coast and Mendocino Coast through Wednesday. * Elevated fire danger Tuesday for interior areas due to breezy afternoon winds. * Hot temperatures return late week into the weekend. * Coastal stratus likely to form each night and clear each afternoon through at least the middle of the week. Synopsis Near to slightly below normal temperatures are likely for the interior areas, while near to slightly above normal coastal temperatures are likely continue through Wednesday. Breezy afternoon winds elevate fire danger in eastern Trinity, eastern Mendocino, and Lake counties. Hot interior temperatures return late this week. The extended period of lighter northerly winds has shut down much of the coastal upwelling. This created warmer than average coastal water temperatures, into the low 60s, and a weaker low level inversion. The lack of cool air advection from the coastal waters and quickly dispersing daytime stratus will once again lead to some warmer coastal temperatures Tuesday. The northerlies will be trending higher this week, allowing for more typical seabreeze temperature moderation. A continued troughing pattern will once again bring breezy afternoon wind gusts of 20 to 30 mph in the interior areas Tuesday afternoon, mainly in the higher elevations and channeled terrain (such as Clear Lake and the Trinity River valley). Low afternoon relative humidities in Trinity, eastern Mendocino, and Lake Counties along with these winds brings an elevated fire weather threat. There is high confidence in high pressure rebuilding over the area later this week. NBM is showing moderate to high probabilities for high temperatures in the triple digits for most interior valleys starting Friday and continuing into next week. Currently, minor to moderate HeatRisk is expected. /JB/JJW Marine Northerly winds will begin trending higher over all zones starting Tuesday. Winds north of Cape Mendocino look to generally remain below 20 kts through the week. The focus of stronger northerlies will remain around and south of Cape Mendocino. Northerlies will strengthen to 20-25 kts in these southern zones, locally with gale conditions up to 30 kts around the cape. Short period northerly seas will increase over the waters while a persistent small long period southerly swell is reinforced by a second Tuesday. A ridge of high pressure will strengthen through the weekend, bringing increased chances for gale strength northerlies. /JJW Fire Weather Breezy westerly winds will continue in the afternoons Tuesday for interior areas and may be particularly breezy with gusts of 20 to 30 mph over the ridges and channeled terrain in eastern Trinity, northeast Mendocino, and Lake Counties. These areas are forecast to have low afternoon RHs in the teens and 20s. Localized and brief critical conditions are possible with these low RHs and winds. Overnight recoveries are expected to be good aside from the higher elevations of Lake and eastern Trinity County. Closer to the coast, a deep marine layer brings high RH and perhaps stratus and/or fog into the river valleys overnight. Afternoon RH ranges from 60s to 80s near the immediate coast to 20s to 40s in interior Humboldt, Del Norte, and western Mendocino Counties. Ridging rebuilds later this week into the weekend bringing much warmer high temperatures to the interior with most valleys forecast to reach the high 90s and triple digits. Afternoon RHs will again be in the teens and 20s for the eastern interior. Weak shortwaves arrive over this same period which may support some breezier afternoons along with this heat and low afternoon RH. Confidence is low at this time, but elevated fire weather conditions are again possible. /JB .BEACH HAZARDS...A long period southerly swell with periods up to 19 seconds remains in from tropical systems in the Eastern Pacific. A second reinforcing long period southerly swell will arrive Tuesday. These energetic swells will bring a low to moderate risk of sneaker waves that would be most hazardous on steep, south and southwest facing beaches along the Lost Coast and Mendocino Coast. Sneaker waves are a unique hazard, with up to 30 minutes between waves. Large, unexpected waves can sweep across the beach without warning, sweeping people into the sea from rocks, jetties, and beaches. These sneaker waves can also move large objects such as logs, crushing anyone caught underneath. Even ankle to knee deep water can knock you down and drag you out when a sneaker wave hits. Pay attention and stay above the high water line and any wet sand to stay safe. If the ground is wet, waves have surged there recently. Stay safe and never turn your back on the ocean! /JJW. .EKA WATCHES/WARNINGS/ADVISORIES... CA... Beach Hazards Statement through Wednesday afternoon for CAZ104-109. NORTHWEST CALIFORNIA COASTAL WATERS... Small Craft Advisory until 9pm PDT Wednesday for PZZ455- 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