Cape Mendocino to Point Arena CA from 10 NM to 60 NM Marine Forecast
| Tonight...Nw Winds 15 To 20 Kt. Waves Nw 7 Ft At 6 Seconds. |
| Sat...Nw Winds 10 To 20 Kt. Waves Nw 9 Ft At 8 Seconds...And Nw 3 Ft At 15 Seconds. Chance Of Rain. |
| Sat Night...Nw Winds 5 To 10 Kt. Waves Nw 6 Ft At 8 Seconds...And Nw 5 Ft At 13 Seconds. |
| Sun...Nw Winds 10 To 15 Kt. Waves Nw 7 Ft At 12 Seconds...And S 2 Ft At 15 Seconds. |
| Sun Night...Nw Winds 15 To 20 Kt. Waves Nw 9 Ft At 7 Seconds...And S 2 Ft At 15 Seconds. |
| Mon...N Winds 20 To 25 Kt. Waves N 10 Ft At 8 Seconds. |
| Tue...N Winds 20 To 25 Kt. Waves N 10 Ft At 7 Seconds. |
| Wed...Nw Winds 15 To 20 Kt. Waves N 7 Ft At 6 Seconds. |
| Area Forecast Discussion National Weather Service Eureka CA 322pm PDT Fri April 26 2024 Synopsis Cooler temperatures and drier weather are expected tonight after a few lingering evening showers. Chance for light rain will return by midday Saturday, followed by drier weather and below temperatures Sunday into early next week. Shower activity has been steadily diminishing this afternoon as an unseasonably cold upper trough progressed into the Great Basin. Robust NW flow aloft on the backside of the trough will diminish tonight as a ridge builds aloft, stability increases and deep mixing subsides. Shallow moist air will likely result low cloud cover and perhaps fog in the interior valleys tonight. Precipitation totals over the last 24 to 36 hours varied widely. For interior Del Norte, 1.72-2.19 occurred, while southern Mendocino (Ukiah) and southern Lake received no measurable rain. Blustery W-NW winds will persist across southern Lake and southern Mendocino into this evening with peak gusts from 20 to 40 mph, highest over the exposed ridges and channeled terrain of Lake County. Another frontal system with a long westerly fetch of high PWATs (Precipitable Waters) (125-150% of normal) will approach on Saturday. Some light rain may occur (30-50% chance for a few hundredths) primarily north of Cape Mendocino. Amounts most likely will not exceed a tenth in 6 hours though a HREF has 60% chance over the higher elevations of Del Norte and Humboldt. A few hundredths appear more probable (60% chance). Subfreezing temperatures are highly probable (80% chance) for the mountains above 3000-3500 feet tonight and Saturday morning. Probabilities for valleys to freeze are much less certain with only a 20-40% chance for the typical cold valleys in Trinity, eastern Humboldt and NE Mendocino. Fog and low clouds will form in the valleys and hinder the longwave cooling. Otherwise, broad and flat ridging is forecast to build offshore as a series of shortwave troughs brush the northern portion of the area, mostly Del Norte county, with periodic precipitation chances into mid week. Low-amplitude westerly flow will most likely keep temperatures on the mild side and near seasonal normals through early next week. Greater uncertainty arises mid to late week with potential for flow amplification over the NE Pacific and above normal interior temperatures. DB Marine Light to gentle breezes in the northern waters are forecast to continue through the weekend as another weak frontal boundary approaches from the NW. Moderate to fresh NW breezes in the southern waters are expected tonight into Saturday. A small craft advisory remains in effect. As winds subside on Saturday, steep northerly waves are forecast to continue through the day and a small craft advisory remains in effect until 6pm Saturday. A persistent NW swell at 9 seconds around 7 feet will likely continue into Saturday. A longer period W swell near 15 second around 3 ft will arrive on Saturday. Larger combined seas (8 to 10 ft) are expected to build early next week as northerly winds strengthen, especially south of Cape Mendocino where a few gusts to 35 kt are possible (50% chance). EYS/DB .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. |
Eureka CA Radar
Pacific Southwest Radar