Marine Weather Net

Point St. George to Point Arena between 150 and 250 NM Offshore Forecast


TODAY

N
WINDS
20 - 30
KNOTS

TONIGHT AND MON

N
WINDS
25 - 30
KNOTS

MON NIGHT

N
WINDS
25 - 30
KNOTS

TUE

N
WINDS
20 - 30
KNOTS

The Marine Weather Forecast In Detail:
PZZ920 Forecast Issued: 853 AM PDT Sun Apr 11 2021

Today...N Winds 20 To 30 Kt. Seas 9 To 15 Ft.
Tonight And Mon...N Winds 25 To 30 Kt. Seas 10 To 15 Ft.
Mon Night...N Winds 25 To 30 Kt. Seas Subsiding To 9 To 13 Ft.
Tue...N Winds 20 To 30 Kt. Seas Becoming 7 To 12 Ft.
Tue Night And Wed...N Winds 15 To 25 Kt. Seas 6 To 11 Ft.
Wed Night...N Winds 15 To 25 Kt. Seas Subsiding To 4 To 8 Ft.
Thu...N Winds 15 To 20 Kt. Seas 5 To 8 Ft.
Thu Night...N Winds 10 To 15 Kt, Becoming 10 To 20 Kt. Seas 6 To 7 Ft.
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Area Forecast Discussion
National Weather Service Eureka CA
416am PDT Sunday April 11 2021

Synopsis
Gusty northerly winds are expected again this afternoon and evening along the coast and these will continue through Tuesday. Otherwise, mostly clear skies with cool nigheights and mild to warm days are expected.

High pressure continues to build over the area. This will allow the pressure gradient to relax slightly this afternoon and winds will be slightly lower this afternoon than yesterday although gusts to 30 mph will still be possible. Inland areas will see warming temperatures in the afternoon with highs in the 70s.

Tonight winds will diminish, but some light offshore flow is expected to continue and will keep skies mainly clear. The ridges will likely be warmer as temperatures warm aloft, but more areas are expected to decouple overnight so some frost is possible. Monday afternoon most areas will see a few more degrees of warming in the afternoon and mostly clear skies. Winds may diminish slightly, but will remain breezy on the coast.

Monday night an upper level low starts to drop out of Canada and into Washington and Oregon. Tuesday this low continues to slowly move south and east. This system is quite dry, especially in Northwest California and there may not even be any clouds with it. Inland temperatures will cool 5 to 10 degrees from Monday. Coastal areas are expected to continue to see highs around 60 due to stronger offshore flow. This cooler airmass will bring cooler overnight low temperatures and the potential for frost again in some of the colder valleys. Overnight Tuesday night into Wednesday winds at higher elevations are expected to strengthen and become easterly. Winds look to the be the strongest over the higher terrain and exposed areas of Lake county with gusts of 20 to 30 mph. Other areas will see breezy winds as well. RH recoveries over the higher terrain may only be around 30 to 40 percent. This will increase fire danger mainly in Lake county, eastern Mendocino county, and eastern Trinity county. The big source of uncertainty is the fuels and how receptive to burning they are. There is also some uncertainty on how strong the winds will. For now will hold off on adding a headline to the FWF to see how it evolves.

Later in the week and into the weekend the upper level low slowly dissipates and moves off to the east. At the same time high pressure over canada pushes south. This will allow temperatures to warm again into the middle 70s for Friday and Saturday. Winds will diminish as well. These lighter winds may allow stratus to form along the coast, but confidence is low on this. MKK

Marine
Strong northerlies will persist through much of Sunday, likely through Monday as well across the outer waters. A gale warning remains in effect for a majority of this weekend across all zones in response. Northerly winds weaken through the first half of next week, however will likely remain around SCY levels, possibly reaching near-gale in the outer waters each afternoon. Seas will be primarily locally generated for the foreseeable future, responding to fluctuations in nearshore northerly winds. Largest seas are expected today and Monday, reaching a very steep 18 ft in the outer waters tonight, then slowly trending down through next week.

.EKA WATCHES/WARNINGS/ADVISORIES... CA...Frost Advisory until 9am PDT this morning for CAZ101>106- 109>112.

NORTHWEST CALIFORNIA COASTAL WATERS... Gale Warning until 9pm PDT this evening for PZZ450-455.

Gale Warning until 9pm PDT Monday for PZZ470-475.