Sunrise 5:53 AM   Sunset 8:32 PM Moonrise 4:00 PM   Moonset 2:55 AM

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PZZ410 1057 Pm Pdt Wed Mar 27 2024
a marine weather statement has been issued for the following areas - . Coastal waters from cape mendocino to pt. Arena ca out 10 nm - . Coastal waters from pt. St. George to cape mendocino ca out 10 nm - . Humboldt bay - . Humboldt bay bar - . Waters from cape mendocino to pt. Arena ca from 10 to 60 nm - . Waters from pt. St. George to cape mendocino ca from 10 to 60 nm - .
at 1056 pm pdt, doppler radar indicated strong Thunderstorms, capable of producing winds to around 30 knots and small hail. These Thunderstorms were located along a line extending from 12 nm northwest of cape mendocino to 37 nm southwest of eureka, moving northeast at 25 knots.
precautionary/preparedness actions - .
water spouts are possible along with stronger Thunderstorms - .locally higher waves - .and lightning strikes. Boaters should seek safe harbor immediately until these storms pass.
mariners can expect gusty winds to around 30 knots - .locally higher waves - .and lightning strikes. Boaters should seek safe harbor immediately until these storms pass.
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lat - .lon 4082 12409 4080 12413 4081 12416 4080 12418 4075 12419 4072 12422 4070 12421 4069 12423 4071 12427 4061 12433 4044 12441 4039 12437 4023 12480 4061 12466 4087 12416 4076 12423 4086 12415 4085 12412 4086 12410

PZZ400 229 Am Pdt Sun May 19 2024
Synopsis for northern california waters - Gale force northerly winds will increase again Sunday afternoon across all waters. A strong thermal trough will continue to produce gale force winds and very steep, hazardous seas through at least Monday night across much of coastal the waters. Gale force conditions may persist across the southern outer waters through Tuesday. Conditions will gradually improve mid to late next week, but seas will remain hazardous for small craft.

FXUS66 KEKA 191145 AFDEKA

AREA FORECAST DISCUSSION National Weather Service Eureka CA 445 AM PDT Sun May 19 2024

SYNOPSIS
Afternoon gusty winds will continue through midweek as the coastal jet pushes onshore. Slightly below normal temperatures expected through the week amidst a series of upper shortwaves and associated weak fronts. More substantial unsettled pattern possible late week into next weekend.



DISCUSSION
Gusty northerly winds continue just offshore as the meridional coastal pressure gradient tightens. Winds have effectively eroded the coastal stratus, leaving only the Eel River Valley, coastal Humboldt and the Russian River Valley with low level cloud cover. As a broad upper level troughing pattern dips into the PNW, temperatures will begin to trend down below seasonal norms over the next several days. Saturday's interior heating has so far mitigated frost potential across the CWA - that said, daytime highs are forecast to fall into the upper 60's and low 70's with <30% RHs across the interior today, posing greater potential for interior frost Monday morning. HRRR indicates a 30-40% probability for <36 degrees in eastern Trinity and interior Humboldt counties, although probabilities for temperatures <40 degrees are more widespread from interior Del Norte to northern Mendocino counties.

The coastal jet will continue to enhance northerly flow through mid- week as upper shortwaves progress into the Great Basin. Mid to high level cloud cover will accompany these disturbances but carry little chance for precip - the greatest chance for passing shower in Del Norte Tuesday into Wednesday is still very marginal. Cooling aloft in addition to strong winds should keep coastal stratus to a minimum through mid-week. Daily afternoon surges of northerly wind gusts 25- 35 mph are expected across coastal areas and windward ridges through Tuesday, when the wind field is likely to shift into the southern waters and further offshore. Gales have been persistent across area waters, but expected to remain below advisory criteria over land.

More persistent WNW flow is forecast by mid-week, enhancing BL moisture and allowing for potential redevelopment of the marine inversion as a transient ridge builds into the coast. Long range models indicate a more progressive troughing pattern expected for late this week into next weekend.



AVIATION
Marine stratus limited to Humboldt Bay and Eel River Valley amidst strong northerly winds offshore. MVFR ceilings expected to persist at ACV through the morning with no significant reductions in visibility as the marine layer weakens. Weak winds at CEC early this morning allowed some scattered stratus to move in, but gusty northerlies expected to resume mid-morning. Coastal terminals will likely see 20-30 knot gusts again this afternoon as the coastal jet pushes onshore. UKI remains VFR this morning as south winds are too weak to advect stratus up the Russian River Valley. A similar pattern is expected for Monday.

MARINE
A thermal trough along the coast will produce a strong pressure gradient that will persist through Monday. This will result in gale force winds and large steep waves in all waters. Current model guidance indicates the strongest winds and wave response shifting to the southern waters by Wednesday. Gales are expected to finally cease by mid next week as the coastal pressure gradient weakens.



EKA WATCHES/WARNINGS/ADVISORIES
CA...
None.
NORTHWEST CALIFORNIA COASTAL WATERS...
Hazardous Seas Warning until 11 AM PDT this morning for PZZ450-455.

Gale Warning from 11 AM this morning to 9 PM PDT Monday for PZZ450-455.

Gale Warning until 11 PM PDT Monday for PZZ470-475.

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Humboldt Bay Entrance
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Sun -- 03:55 AM PDT     Moonset
Sun -- 04:26 AM PDT     1.38 feet Low Tide
Sun -- 05:55 AM PDT     Sunrise
Sun -- 10:21 AM PDT     4.33 feet High Tide
Sun -- 03:59 PM PDT     2.13 feet Low Tide
Sun -- 04:59 PM PDT     Moonrise
Sun -- 08:31 PM PDT     Sunset
Sun -- 10:08 PM PDT     5.98 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION

Humboldt Bay Entrance, California, Tide feet

Hookton Slough
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Sun -- 03:55 AM PDT     Moonset
Sun -- 04:44 AM PDT     1.38 feet Low Tide
Sun -- 05:55 AM PDT     Sunrise
Sun -- 10:45 AM PDT     4.83 feet High Tide
Sun -- 04:17 PM PDT     2.13 feet Low Tide
Sun -- 04:59 PM PDT     Moonrise
Sun -- 08:31 PM PDT     Sunset
Sun -- 10:32 PM PDT     6.48 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION

Hookton Slough, Humboldt Bay, California, Tide feet

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