Sunrise 6:30 AM   Sunset 8:01 PM Moonrise 2:09 PM   Moonset 3:33 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 182110 AFDEKA

AREA FORECAST DISCUSSION National Weather Service Eureka CA 210 PM PDT Thu Apr 18 2024

SYNOPSIS
Dry weather and mild temperatures are expected to continue through Friday. A weak cold front will bring a slight chance of light rain and drizzle to the North Coast on Saturday followed by breezy northerly winds on Sunday.

DISCUSSION
It was another pleasant day across NW California today with above normal high temperatures (mid 70s to mid 80s) for the interior valleys after another chilly start (low temps in the mid 30s to mid 40s). Coastal areas were near normal; a couple degrees either side of 60F. Upper ridge offshore extending northward into western British Columbia will slowly shift eastward Friday through Saturday. Large scale sinking associated with the upper ridge coupled with light offshore wind flow will result in another stellar day with pleasant interior high temps on Friday.
The one downside is the potential for stratus and fog along the Mendocino coast on Friday. Signature for a southerly wind reversal and stratus north of Cape Mendocino in not as pronounced. Low stratus clouds will probably form offshore over the waters and spread onto the North Coast Friday night in advance of a weak front.

A weak front associated with a transient shortwave trough will bring a push low level moisture and perhaps some light rain and drizzle to Del Norte and northern Humboldt counties, primarily during the afternoon on Saturday. Otherwise, dry weather and some cooling of interior high temps are expected in response to breezy west-northwest winds and greater cloud cover across the interior.

Surface high pressure will build in quickly over the Pacific Northwest Saturday night and Sunday in the wake of the front.
Breezy northerly winds are forecast to redeveloped over mostly coastal areas as surface pressure gradients tighten on Sunday.
NBM probabilities indicates a 60-80% chance for wind gusts from 30-40 MPH along the exposed ridges and coastal headlands of Del Norte/Humboldt Counties on Sunday. Also, gusty west-northwest winds will most likely develop through channeled terrain in the interior behind the front Saturday evening.

After a brief period of interior warming and upper ridging, interior temperatures are forecast to trend down mid to late next week as another upper-trough-complex impacts the west coast. The magnitude and rate of cooling remains highly uncertain at this point with 25-75th spreads on the order 10F for high temps and 5F for low temps. Current forecast is for near normal temperatures; highs in the 60s and lows mostly in the 40s. There are subtle indications for convection across mainly Trinity County on Tuesday as an upper trough with limited moisture generates instability.

Potential for precip (showers) will also increase mid to late next week, though amounts will most likely wont be very much with RAW ensemble probabilities of 20% to 30% for > 1 inch of rain in 24-hours for the western slopes of Del Norte and northern Humboldt. Stay tuned. DB

AVIATION
VFR conditions prevail this afternoon at all terminals. Mid to high level clouds will increase from the west throughout the day. Though the northerly winds have relaxed today, a dry, well-mixed boundary layer continues to thwart stratus formation through this TAF period. Further easing of the northerly winds, along with developing coastal return flow eddies, will begin to increase stratus chances starting later Friday. /JJW

MARINE
Northerly winds will continue to trend lower today. Steep seas are also on the way down, and will drop below 7 feet in all zones into early Friday morning. Winds will become light and variable in the nearshore inner zones tonight, with periods of southerly return flow. The northerlies will sharply increase Saturday afternoon behind a passing front. The northerly winds will further increase Sunday into Monday when Gale conditions now seem probable. There is currently 85 to 95% for gusts over 34 kt over the southern outer waters, and 65 to 75% for the northern outer zone Sunday afternoon. Other than small 2-3 foot long-period southerly swells, and a small, mid-period swell over the weekend, the sea state will be dominated locally generated short-period seas. /JJW

EKA WATCHES/WARNINGS/ADVISORIES
CA...
None.
NORTHWEST CALIFORNIA COASTAL WATERS...
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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Eureka
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Thu -- 03:00 AM PDT     3.20 feet Low Tide
Thu -- 04:32 AM PDT     Moonset
Thu -- 06:32 AM PDT     Sunrise
Thu -- 09:11 AM PDT     5.84 feet High Tide
Thu -- 03:08 PM PDT     Moonrise
Thu -- 03:31 PM PDT     1.16 feet Low Tide
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Thu -- 03:14 AM PDT     3.07 feet Low Tide
Thu -- 04:32 AM PDT     Moonset
Thu -- 06:32 AM PDT     Sunrise
Thu -- 08:56 AM PDT     5.56 feet High Tide
Thu -- 03:08 PM PDT     Moonrise
Thu -- 03:37 PM PDT     0.87 feet Low Tide
Thu -- 08:00 PM PDT     Sunset
Thu -- 10:21 PM PDT     5.78 feet High Tide
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Fields Landing, Humboldt Bay, California, Tide feet

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