Sunrise 6:30 AM   Sunset 8:01 PM Moonrise 2:09 PM   Moonset 3:32 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 852 Am Pdt Thu Apr 18 2024
Synopsis for northern california waters - Winds and seas will continue to diminish from south to north through late this afternoon and evening. Wave heights are expected to fall to 5-6 feet by Friday beneath light northerlies. Winds will rapidly increase Saturday and Sunday behind a front, producing steep wind waves through early next week.

FXUS66 KEKA 181201 AFDEKA

AREA FORECAST DISCUSSION National Weather Service Eureka CA 501 AM PDT Thu Apr 18 2024

SYNOPSIS
Dry, mild temperatures are expected to continue for the remainder of the week. A shallow marine layer will return early Friday morning. Temperatures will begin a cooling trend this weekend as a fast-moving shortwave trough and a weak cold front moves through, with very light precipitation or sprinkles in Del Norte on Saturday. Breezy NW winds will redevelop along the North Coast with a shortwave ridging building over the area on Sunday.



DISCUSSION
Another day with quiet weather conditions across Northern California. High pressure over the area is bringing increasing subsidence aloft, weak offshore flow, and mostly clear skies early this morning. Latest satellite imagery depicts high level moisture from the Pacific approaching the area. High clouds are expected to stream across the area this afternoon and evening, bringing a beautiful sunset. Temperatures will continue to slightly warming today, even along the coast. Interior valley's temperatures are forecast to be in the upper 70s to low 80s, while the coastal area are expected to reach into the 60s before the light onshore flow develops in the afternoon. A classic southerly stratus surge will develop late tonight/early Friday morning, with a shallow marine layer charging up and lapping the Mendocino Coast.

Friday, the high pressure break down and pass over while a fast- moving shortwave trough and a weak surface front approaches the area. The flow will become zonal which may slightly deepen the marine layer and cool near the coastal areas 3 to 5 degrees. Interior areas are expected to warm up another few degrees.

The aforementioned weak front will clip the northern portion of the area on Saturday. This will bring a low chance of light rain or sprinkles to coastal Del Norte County by Saturday afternoon.
Elsewhere, expect an increase in cloud cover, a "cool" down in temperatures and breezy west-northwest winds. A shortwave ridge will begin to build in quickly over the Pacific Northwest and Northern California in the wake of the front on Sunday.
Breezy northwesterly winds will redeveloped along the coastal areas with a tightening pressure gradient, mainly along the North Coast. NBM probabilities indicates there is a 60-75% chance of wind gusts around 30MPH along the exposed ridges and coastal headlands of Del Norte County and Cape Mendocino.

Ensembles are showing an amplifying upper-level trough/deepening a cut off low approaching the area early next week. Cluster analysis are align with the deterministic and ensemble models with this system approaching the area. However, there is a lot of uncertainty with the location and timing with the cutoff trough.
GFS and ECMWF are fairly align remain the Pacific Storm well offshore and moving southward toward Baja California by mid week, while the Canadian indicates this storm settling over the West Coast. Stay tuned!

Velez



AVIATION
VFR conditions and light winds across all terminals will continue this morning beneath an axis of high pressure. Light offshore flow at coastal terminals will deter widespread marine stratus development, although minor wind reversals south of Trinidad and within Humboldt Bay may encourage a shallow marine layer to move inland and produce scattered low ceilings and reduced visibility early this morning at ACV. Current observations have yet to align with hi-res models, but TAFs will reflect potential for intermittent stratus/mist. Otherwise, NW winds will increase this afternoon with daytime heating before quickly turning ESE overnight to resume offshore flow.



MARINE
Nearshore winds rapidly diminished early this morning as the coastal jet migrates west. Wave heights will continue to decrease in response, with >10 ft seas lingering in the outer waters and downwind of Cape Mendocino. Winds and seas will continue to subside beneath a broad area of high pressure building into the CA coast, allowing wave heights to diminish to 5-6 feet by late Friday. An upper level shortwave and associated frontal passage are expected to clip NorCal Saturday afternoon, generating a rapid resurgence of northerly winds and responsive wind waves. Small craft conditions are likely late this weekend into early next week as the coastal pressure gradient tightens ahead of another building ridge.

EKA WATCHES/WARNINGS/ADVISORIES
CA...
None.
NORTHWEST CALIFORNIA COASTAL WATERS...
Small Craft Advisory until 5 AM PDT early this morning for PZZ450-455.

Small Craft Advisory until 3 AM PDT Friday for PZZ470.

Small Craft Advisory until 9 PM PDT this evening for PZZ475.

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Bucksport
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Thu -- 03:18 AM PDT     3.20 feet Low Tide
Thu -- 04:32 AM PDT     Moonset
Thu -- 06:32 AM PDT     Sunrise
Thu -- 09:11 AM PDT     5.67 feet High Tide
Thu -- 03:08 PM PDT     Moonrise
Thu -- 03:41 PM PDT     0.91 feet Low Tide
Thu -- 08:00 PM PDT     Sunset
Thu -- 10:36 PM PDT     5.90 feet High Tide
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Bucksport, Humboldt Bay, California, Tide feet

Mad River Slough, Arcata Bay, Humboldt Bay, California, Tide feet

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