Marine Weather Net

Cape Mendocino to Point Arena CA from 10 NM to 60 NM Marine Forecast


TODAY

SE
WINDS
5 - 10
KNOTS

TONIGHT

S
WINDS
15 - 20
KNOTS

SUN

SW
WINDS
5 - 10
KNOTS

SUN NIGHT

W
WINDS
5 - 10
KNOTS

The Marine Weather Forecast In Detail:
PZZ475 Forecast Issued: 257 AM PST Sat Feb 15 2025

SMALL CRAFT ADVISORY IN EFFECT UNTIL 9 AM PST THIS MORNING
Today...Se Wind 5 To 10 Kt, Becoming S 15 To 20 Kt This Afternoon. Seas 9 Ft. Wave Detail: N 3 Ft At 8 Seconds And W 9 Ft At 15 Seconds. A Slight Chance Of.
Tonight...S Wind 15 To 20 Kt. Seas 6 Ft. Wave Detail: S 5 Ft At 5 Seconds And Nw 2 Ft At 7 Seconds. Rain.
Sun...Sw Wind 5 To 10 Kt. Seas 8 Ft. Wave Detail: Sw 5 Ft At 5 Seconds And W 8 Ft At 13 Seconds. A Chance Of Rain.
Sun Night...W Wind 5 To 10 Kt. Seas 9 Ft. Wave Detail: W 4 Ft At 5 Seconds And W 9 Ft At 15 Seconds. A Chance Of Rain.
Mon...Nw Wind 5 To 10 Kt. Seas 13 Ft. Wave Detail: W 3 Ft At 4 Seconds And W 13 Ft At 15 Seconds.
Mon Night...Nw Wind 5 To 10 Kt. Seas 11 Ft. Wave Detail: W 11 Ft At 14 Seconds.
Tue...Nw Wind 5 To 10 Kt. Seas 9 Ft. Wave Detail: W 9 Ft At 13 Seconds.
Tue Night...S Wind 10 To 15 Kt. Seas 6 Ft. Wave Detail: W 6 Ft At 12 Seconds And W 3 Ft At 18 Seconds. A Chance Of Rain.
Wed...Sw Wind 10 To 15 Kt. Seas 8 Ft. Wave Detail: Sw 5 Ft At 5 Seconds And W 3 Ft At 11 Seconds. Rain Likely.
Wed Night...Nw Wind 20 To 25 Kt. Seas 11 Ft. Wave Detail: W 7 Ft At 6 Seconds And W 10 Ft At 10 Seconds.
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Area Forecast Discussion
National Weather Service Eureka CA
445am PST Sat Feb 15 2025

Synopsis
Dry and calm weather is forecast for today, followed by a weak front bringing light to locally moderate rain, breezy south winds and mountain snow tonight into Monday.

A brief high pressure is building across the area this morning. Latest satellite imagery depicts high level moisture streaming across Northern California ahead of an approaching weak front. The increase cloud cover and warming aloft should result in warmer temperatures today, with highs generally in the mid 50's to low 60's.

A weak front will approaches the area this evening and then sweep southeast through the forecast area tonight into Sunday, bringing increasing chance of precipitation. Breezy southerly winds are expected to develop tonight along the North Coast. Gusts from 25 to 35 mph are likely over the coastal headlands and exposed ridges in Del Norte and Humboldt counties. Rain will arrive first to Del Norte and the northern portion of Humboldt later this evening, and overnight for the remainder of the area. Light to locally rainfall is forecast, followed by shower activity through Monday afternoon. Rainfall will be focused along the North Coast with 0.5 to 1.5 inches of rain most likely, with less than 0.5 inches further inland and south, with little more than light sprinkle for Lake County.

The WAA (Warm Air Advection - the movement of warm air) will aided in rising snow levels to above 4000 feet, but with light moisture moving over the coldest areas tonight. Snow levels will come down as the upper level shortwave trough passes overhead and brings cold air aloft, generally dropping snow down to around 3,500 to 4,500 feet Sunday night into Monday. Scott Mountain Pass on Highway 3 will see some snow, up to 2 inches.

Tuesday, dry weather conditions is expected as a shortwave ridging builds aloft. Another brief frontal system is expected to bring additional precipitation by mid week. Long range ensembles show good agreement that a long period of dry and warm weather is expected to start settling in by the end of next week. /ZVS

Marine
A westerly swell continues to decay this morning and will fall below the 10 ft threshold in the next few hours. This will allow the small craft advisories to fall across much of the waters, however southerly winds will begin to ramp up today and approach small craft criteria in the northern outer waters zone quickly today. Thus, the small craft advisory has been maintained in this one zone. Winds may reach small craft eventually in the northern winner waters zone tonight as the approaching front moves east, but with enough of a gap between the elevated sea state and the winds, will leave the inner waters zone to be dealt with later today with the day shift.

Sunday will sea a gradual decrease in wind speeds in the wake of the front and the slow passage of the area of low pressure into the Pacific Northwest. A westerly swell will build into the water Sunday night into Monday bringing another round of elevated seas with small craft conditions possible for all waters into Tuesday. /RPA

.EKA WATCHES/WARNINGS/ADVISORIES... CA... None. NORTHWEST CALIFORNIA COASTAL WATERS... Small Craft Advisory until 9am PST this morning for PZZ450- 455-475.

Small Craft Advisory until 9am PST Sunday for PZZ470.

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