Marine Weather Net

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


TODAY

N
WINDS
25 - 30
KNOTS

TONIGHT

N
WINDS
20 - 25
KNOTS

SAT

N
WINDS
25 - 30
KNOTS

SAT NIGHT

N
WINDS
25 - 30
KNOTS

The Marine Weather Forecast In Detail:
PZZ475 Forecast Issued: 253 AM PDT Fri Jun 14 2024

GALE WARNING IN EFFECT THROUGH THIS AFTERNOON
Today...N Wind 25 To 30 Kt, Backing To Nw 20 To 25 Kt This Afternoon. Seas 11 Ft. Wave Detail: N 11 Ft At 9 Seconds And W 4 Ft At 11 Seconds.
Tonight...N Wind 20 To 25 Kt With Gusts Up To 35 Kt. Seas 9 Ft. Wave Detail: N 9 Ft At 7 Seconds And W 4 Ft At 11 Seconds.
Sat...N Wind 25 To 30 Kt. Seas 8 Ft. Wave Detail: N 7 Ft At 7 Seconds And Nw 3 Ft At 10 Seconds.
Sat Night...N Wind 25 To 30 Kt With Gusts Up To 40 Kt. Seas Around 8 Ft. Wave Detail: N 7 Ft At 7 Seconds And Nw 3 Ft At 10 Seconds.
Sun...N Wind 25 To 30 Kt. Seas 8 Ft. Wave Detail: N 8 Ft At 7 Seconds And S 2 Ft At 13 Seconds.
Sun Night...N Wind 20 To 25 Kt. Seas 8 Ft. Wave Detail: N 8 Ft At 7 Seconds.
Mon...N Wind 20 To 25 Kt. Seas 9 Ft. Wave Detail: Nw 9 Ft At 9 Seconds And S 2 Ft At 16 Seconds.
Mon Night...N Wind 20 To 25 Kt. Seas 8 Ft. Wave Detail: N 8 Ft At 7 Seconds And Sw 2 Ft At 16 Seconds.
Tue...N Wind 15 To 20 Kt. Seas 8 Ft. Wave Detail: N 7 Ft At 6 Seconds And W 4 Ft At 11 Seconds.
Tue Night...Nw Wind 15 To 20 Kt. Seas 7 Ft. Wave Detail: N 7 Ft At 6 Seconds And W 3 Ft At 10 Seconds.
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Area Forecast Discussion
National Weather Service Eureka CA
339pm PDT Thu Jun 13 2024

Synopsis
Dry weather expected through the weekend. A cooling trend is expected to continue on Friday and moderate to near seasonal levels this weekend. Much stronger westerly to northwesterly winds are expected in the interior this weekend.

GOES-West satellite imagery shows continue shifting eastward, while an upper level trough centered over the Gulf of Alaska. Stratus has scattered out with the daytime heating, although stratus near-coastal locations are expected to persist with the sea breeze for the North Coast. Inland temperatures has been running up to 7 degrees cooler compared to yesterday's reading.

A weak and dry cold front will move over the area early Friday. Inland temperatures are expected to continue cool down additional 5 to 10 degrees on Friday, and then moderate through the weekend with temperatures near normal. Stratus and marine layer depth will probably increase on Friday in response to a shortwave through that is forecast to move into the Pac NW on Saturday. Slightly cooler air and continued dry conditions with clear skies should result in chilly overnight temperatures once winds decouple. There is a chance (20-40%) for brief morning frost in the colder valleys of Trinity and eastern Humboldt counties this weekend and early next week.

Prime concern heading into the weekend is potential for strong and gusty westerly to northwesterly winds in the interior, particularly in Lake, Trinity and Mendocino due to the low RH's. See fire weather section for more details. Peak gusts from 25 to 40 mph are probable, with lower probabilities for gusts to 40-50 mph. Strongest winds will most likely occur on Sunday evening with the passage of a 500mb shortwave trough. Windy conditions in the interior will probably continue into Monday.

This trough is forecast to be relatively dry and right now the potential for any precipitation is quite meager, 5-10% chance for Del Norte late this weekend. Models diverge on the track of the 500mb trough. Minuscule amounts of rain is not impossible for Del Norte and northern Humboldt on Monday. Wetting rain chances are meager with NBM probabilities for greater than 0.10in no more than 13% for Del Norte and northern Humboldt counties. NBM has temperatures remaining near seasonal normals early next week, followed by gradual warming mid to late next week. /ZVS&DB

Marine
Gale force winds gusting up to 40 knots continue in the Southern inner and outer waters through the weekend. The sea state remains hazardous with 10 to 13 ft waves at 8 to 10 seconds. Steep square waves will persist but diminish in wave height, particularly in the northern outer waters. South of Cape Mendocino, gales force gusts will continue with the expansion fan into Friday. Currently, the expansion fan drifts more into the southern inner waters Friday, which could lead to the return of gales near-shore, but these will subside below gales by Friday evening. Gales in the southern outer waters will pause Friday evening and return by Saturday afternoon. The sea state will continue to be characterized by northerly wind waves and mid-period northwesterly swells through the weekend. /JB /EYS

Fire Weather
West to northwest winds are expected to develop on Friday, and then strengthen across the interior this weekend. The strongest west to northwest winds gusting from 25 to 40 mph will most likely occur on Sunday and then continue into Monday, with the strongest winds expected Sunday evening. Very dry conditions with low daytime RH's in the 20's and teens are expected to continue through the foreseeable future, primarily in Lake and Trinity counties, and interior Mendocino. Overnight RH's are expected to increase slightly during the weekend. However, there will be no doubt be poor recoveries where light to moderate ridge level breezes persist each night. The strong winds and low humidity will yield an elevated fire weather threat Sunday morning through Monday afternoon, particularly for the south and east side of Lake County. Have to hoisted a Fire Weather Watch for elevations below 2000 feet in zone 264 (southern Lake). /ZVS.

.EKA WATCHES/WARNINGS/ADVISORIES... CA... Fire Weather Watch from late Saturday night through Monday afternoon for CAZ264.

NORTHWEST CALIFORNIA COASTAL WATERS... Small Craft Advisory until 6pm PDT Friday for PZZ450.

Small Craft Advisory until noon PDT Friday for PZZ455.

Gale Warning from noon to 9pm PDT Friday for PZZ455.

Hazardous Seas Warning until 9pm PDT this evening for PZZ470.

Gale Warning until 3pm PDT Friday for PZZ475.


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