Sunrise 6:21 AM   Sunset 8:07 PM Moonrise 8:20 PM   Moonset 5:33 AM

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PZZ450 Pt St George To Cape Mendocino Out 10 Nm- 857 Am Pdt Wed Apr 24 2024
Today - N winds 5 to 15 kt. Waves N 4 ft at 6 seconds.Tonight - NW winds 5 to 10 kt. Waves N 5 ft at 6 seconds. Thu - S winds 5 to 10 kt. Waves W 4 ft at 10 seconds. Rain.Thu night - SW winds 5 to 10 kt. Waves W 5 ft at 9 seconds. Fri - NW winds 5 to 15 kt. Waves W 6 ft at 9 seconds. Sat - SW winds 5 to 10 kt. Waves nw 5 ft at 8 seconds - .and W 3 ft at 15 seconds. Sun - NW winds 5 to 10 kt. Waves nw 8 ft at 12 seconds.

PZZ400 857 Am Pdt Wed Apr 24 2024
Synopsis for northern california waters - Calmer winds will lead to short period seas dropping below 6 feet through Thursday. Calmer conditions will persist with only isolated enhancement of northerlies around cape mendocino. After a brief surge of southerly winds along a frontal boundary Thursday evening, breezy northwesterly winds will return to the waters on Friday and persist through Sunday, especially in the southern waters.

FXUS66 KEKA 241119 AFDEKA

AREA FORECAST DISCUSSION National Weather Service Eureka CA 419 AM PDT Wed Apr 24 2024

SYNOPSIS
Mainly dry weather is expected today with a few showers possible over the interior. A cold front will bring below normal temperatures, widespread rain, and high mountain snow to the area Thursday and into Friday. Additional showers and below normal temperatures are expected through the weekend and into early next week.

DISCUSSION
An upper level trough and associated cold front is dropping down from the north towards the area. The upper level low that brought thunderstorms to the interior yesterday is continuing to drop south and weaken. This may still bring a few showers to the interior this afternoon, but instability is weaker and lapse rates aloft are not as steep. This should limit the threat for thunderstorms. This morning there is also widespread stratus across the coastal areas and near coastal areas. The marine layer is over 3,000 feet deep and therefor cloud bases are higher and there isn't much fog around this morning.

Tonight widespread clouds are expected to spread across the area as a cold front approaches the area. Rain is expected to start in Del Norte county Thursday morning and spread south later in the morning and afternoon. The front is expected to rapidly weaken as it moves south. Thursday Del Norte county is expected to see amounts ranging from 0.5 to 0.75 while Humboldt is expected to see around a half inch near Orick to only a tenth of inch in Garberville. This is expected to come mainly in a few hours of steady rain in the morning and early afternoon as it moves south.
Farther south and east in Mendocino, Lake and Trinity counties less than a tenth of an inch of rain is expected. Thursday is expected to see cool temperatures with highs in the 50s in most valleys although southern Mendocino and Lake counties may see mid 60s.

Behind the main front Thursday afternoon through Friday showers are expected to linger and additional rainfall is expected.
Rainfall amounts are expected to be light again with amounts ranging from a half inch in Del Norte county to less than a tenth of an inch in southern Mendocino and Lake counties. Thursday night widespread cloud cover should keep low temperatures mainly in the 40s, although the mountains could see temperatures drop into the 30s. Friday high temperatures are expected to be in the 50s to low 60s again.

For the weekend and into early next week nearly zonal flow will keep temperatures below normal and a mix of sun and clouds. The models are showing some shortwaves moving through the flow and this may bring occasional light rain. At this point it looks like any rain will be light, but it is possible there could be a stronger shortwave that brings some moderate rain. Temperatures will be rebound slightly, but will generally remain in the 60s.
Any nights that do manage to clear out will likely see near freezing or freezing temperatures. At this point Tuesday morning looks like the coldest morning, but this will depend a lot on how much cloud cover there is. MKK

AVIATION
A very deep marine layer has allowed CIGS to lift to nearly 3000 feet at many locations including all three TAF sites.
These may drop slightly this morning, but will likely remain in the MVFR category. The cooler air aloft has weakened the marine inversion and this may allow skies to mix out this afternoon. This evening and tonight CIGs are expected to drop to MVFR or possible IFR conditions mainly in Humboldt and Del Norte counties as a cold front moves over the area. It is uncertain if these low clouds will make it down to Ukiah. MKK

MARINE
Northerly winds will persist through Thursday. A series of mild cold fronts will lightly enhance winds, though gusts are forecasted to be moderate at best with 20 kt gusts restricted right around Cape Mendocino. Such winds will most likely not be strong enough to build short period seas to 6 feet. Though short period seas will dominate the sea state through the week, a series of persistent, mid period northwest swells up to 5 feet will generally compliment the northerly wind waves. Friday morning shows signs of more chaotic seas returning as strong north winds return, maxing out south of Cape Mendocino. DS



EKA WATCHES/WARNINGS/ADVISORIES
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None.
NORTHWEST CALIFORNIA COASTAL WATERS...
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