Marine Weather Net

Point St. George to Cape Mendocino CA from 10 to 60 NM Marine Forecast


TONIGHT

N
WINDS
20 - 25
KNOTS

THU

N
WINDS
25 - 30
KNOTS

THU NIGHT

N
WINDS
25 - 35
KNOTS

FRI

NW
WINDS
25 - 30
KNOTS

The Marine Weather Forecast In Detail:
PZZ470 Forecast Issued: 257 PM PDT Wed May 29 2024

SMALL CRAFT ADVISORY IN EFFECT UNTIL MIDNIGHT PDT TONIGHT ...GALE WARNING IN EFFECT FROM MIDNIGHT PDT TONIGHT THROUGH FRIDAY EVENING...
Tonight...N Wind 20 To 25 Kt. Gusts Up To 35 Kt After Midnight. Seas 7 Ft. Wave Detail: N 7 Ft At 6 Seconds And Nw 4 Ft At 10 Seconds.
Thu...N Wind 25 To 30 Kt With Gusts Up To 40 Kt. Seas 9 Ft. Wave Detail: N 9 Ft At 9 Seconds.
Thu Night...N Wind 25 To 35 Kt With Gusts Up To 45 Kt. Seas Around 13 Ft. Wave Detail: Nw 2 Ft At 9 Seconds And N 13 Ft At 10 Seconds.
Fri...Nw Wind 25 To 30 Kt. Seas 11 Ft. Wave Detail: Nw 1 Foot At 9 Seconds And N 11 Ft At 10 Seconds.
Fri Night...N Wind 20 To 25 Kt. Seas 9 Ft. Wave Detail: N 9 Ft At 9 Seconds.
Sat...Nw Wind 10 To 15 Kt. Seas 5 Ft. Wave Detail: N 5 Ft At 6 Seconds.
Sat Night...Nw Wind 10 Kt. Seas 4 Ft. Wave Detail: Nw 4 Ft At 4 Seconds And Nw 3 Ft At 11 Seconds.
Sun...W Wind 5 To 10 Kt. Seas 5 Ft. Wave Detail: Nw 3 Ft At 4 Seconds And Nw 4 Ft At 10 Seconds.
Sun Night...Sw Wind 10 Kt. Seas 5 Ft. Wave Detail: W 3 Ft At 5 Seconds And Nw 4 Ft At 11 Seconds. A Chance Of Rain.
Mon...W Wind 10 Kt. Seas 6 Ft. Wave Detail: Sw 3 Ft At 4 Seconds And Nw 5 Ft At 10 Seconds. A Chance Of Rain.
Mon Night...Nw Wind 10 Kt. Seas 7 Ft. Wave Detail: Nw 2 Ft At 4 Seconds And W 6 Ft At 10 Seconds.
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Area Forecast Discussion
National Weather Service Eureka CA
253pm PDT Wednesday May 29 2024

Synopsis
A warming trend will continue through this week with the hottest inland valleys reaching the upper 90s by late this week. A regular cycle of stratus and gusty afternoon onshore flow will persist for the coast.

A ridge in the Northeast Pacific will continue to build into the region through the end of the week. This will bring hot temperatures back to the interior with NBM even showing a 25% chance of 95 degree highs in the very hottest valleys of Trinity County by Friday. Plenty of dry air has been ushered in with the building ridge which will continue to dry interior fuels through the weekend. Building high pressure will also support a usual cycle of nighttime marine stratus with gusty north winds pushing on shore and helping to mix out clouds each afternoon. Onshore winds will most likely be strongest this afternoon and evening with gusts upwards of around 35-40 mph around the coastal headlands in Del Norte and Northern Humboldt. Wind gusts on other parts of the coast are forecasted to be between 20-30 mph. This flow will flip throughout the night and be more offshore from the northeast on Thursday morning before gusting onshore again in the afternoon.

Ensemble clusters indicate that a troughing pattern may set up late in the weekend and into next week. The ECMWF (European Centre for Medium-Range Weather Forecasts) Extreme Forecast Index (EFI) indicates a decently high signal for more precipitation than average from Sunday and into Monday. This likely will have minimal impacts on the region with the National Blend of Models (NBM) indicating a 50 to 60 percent chance of wetting rain (>0.1 inches) for Del Norte County and a 20 to 40 percent chance in northern Humboldt County. However, details will become more clear as the models update and we get closer to the event.

Marine
An offshore ridge building into the region will tighten the inland thermal trough gradient and continue to enhance offshore winds this afternoon into Thursday. Gale conditions observed in the southern inner waters expected to build on already enhanced conditions in the southern waters before expanding north early Thursday. Rapid wind wave response expected Thursday afternoon into Friday, with wave heigheights forecasted to reach 13 feet at 10 seconds in the outer waters by early Friday. Model guidance anticipates a weak trough pattern developing this weekend, effectively inhibiting the expansion fans downwind of Port Orford and Cape Mendocino. Seas expected to quickly follow suit as a nearshore westerly swell traverses the waters.

.EKA WATCHES/WARNINGS/ADVISORIES... CA... None. NORTHWEST CALIFORNIA COASTAL WATERS... Small Craft Advisory until 3am PDT Saturday for PZZ450.

Gale Warning until 9pm PDT Thursday for PZZ455.

Small Craft Advisory until midnight PDT tonight for PZZ470.

Gale Warning from midnight tonight to 10pm PDT Friday for PZZ470.

Small Craft Advisory until 5pm PDT this afternoon for PZZ475.

Gale Warning until 10pm PDT Friday for PZZ475.

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