Point St. George to Cape Mendocino CA out 10 NM Marine Forecast
| Today...Nw Winds 5 To 10 Kt. Waves W 6 Ft At 9 Seconds. Chance Of Showers. |
| Tonight...Nw Winds 5 To 10 Kt. Waves Nw 6 Ft At 9 Seconds. |
| Sat...W Winds 5 To 10 Kt. Waves Nw 6 Ft At 9 Seconds...And W 2 Ft At 15 Seconds. Slight Chance Of Showers. |
| Sat Night...S Winds 5 To 10 Kt. Waves W 4 Ft At 8 Seconds...And W 3 Ft At 13 Seconds. |
| Sun...Nw Winds 5 To 15 Kt. Waves Nw 6 Ft At 12 Seconds. |
| Mon...N Winds 10 To 15 Kt. Waves Nw 7 Ft At 11 Seconds. |
| Tue...N Winds 10 To 15 Kt. Waves Nw 9 Ft At 12 Seconds. |
| Area Forecast Discussion National Weather Service Eureka CA 454am PDT Fri April 26 2024 Synopsis Rain showers will continue across the area today. Tonight chilly temperatures are expected with some of colder valleys seeing frost. Showers are possible again Saturday afternoon. Generally dry conditions and below normal temperatures are expected Sunday and into next week. The upper level trough over the west coast continues to bring showers to the area this morning. Rainfall amounts have been the highest in the mountains of Humboldt and Del NOrte counties with around a half inch reported from 10pm to 4am. Farther south and east rainfall amounts have ranged from a trace to a tenth of an inch overnight. These showers are expected to continue through the afternoon, mainly in Humboldt and Del Norte counties. NBM thunder probabilities were showing a 10 to 15 percent chance of thunder this afternoon across the interior, but instability looks shallow so kept it out of the forecast. This afternoon northwesterly winds will start to pick up across the area, but mainly in Mendocino and Lake counties. Gusts of 25 to 35 mph are likely over the higher terrain and wind prone in these areas. Tonight will be chilly with the cool airmass in place over the area. H850 MB temperatures will be just below freezing. This will likely allow frost to form in the valleys that clear out tonight. Confidence is low on exactly where this will occur, but Trinity, Mendocino, and Lake counties have seen the least rain so will be the most likely to remain clear tonight. Freezing temperatures are possible, but for now have just issued a frost advisory for portions of these counties. This may need to be adjusted based on cloud cover and dewpoint trends this afternoon and evening. As the upper level trough moves out of the area zonal flow sets up. The newer model runs are now showing a shortwave moving through this zonal flow Saturday afternoon bringing some light rain to Humboldt and Del Norte counties once again. Amounts look to be less than tenth of inch. These clouds will likely linger through the night and keep temperatures from dropping as low overnight. Sunday and Monday zonal flow is expected to persist in NW California. This is expected to keep temperatures below normal and some clouds in the coastal and near coastal areas. Frost is possible each night, but will be highly dependent on cloud cover. It is certainly possible another shortwave will move through this flow and bring some light rain. Tuesday and Wednesday it looks like the temperatures will start to warm back towards normal with the NBM showing temperatures back in the 70s. However, one or two of the four ensemble clusters are showing the upper level trough sticking around and bringing continued cool temperatures. MKK Marine Westerly winds at a light to gentle breeze in the northern waters will last through the weekend with a persistent NW swell at 9 seconds, 6 - 7 feet in height. A longer period W swell at 14 to 15 seconds will arrive Saturday with waves 2 - 3 feet high. Otherwise, a moderate to fresh breeze in the southern waters and steep to square waves will bring conditions in and out of small craft advisory criteria, tonight through Saturday. Larger combined seas are expected early next week around 10 feet in height with steep dimensions. /EYS .EKA WATCHES/WARNINGS/ADVISORIES... CA... Frost Advisory from 2am to 8am PDT Saturday for CAZ107- 108-110-111-114. NORTHWEST CALIFORNIA COASTAL WATERS... Small Craft Advisory from 5pm this afternoon to 6pm PDT Saturday for PZZ455-475. |
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