Sunrise 5:53 AM   Sunset 8:32 PM Moonrise 3:00 PM   Moonset 2:37 AM

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PZZ450 Pt St George To Cape Mendocino Out 10 Nm- 846 Pm Pdt Sat May 18 2024
.hazardous seas warning in effect through Sunday morning - ..gale warning in effect from Sunday morning through Monday evening - .
Tonight - N winds 20 to 30 kt. Waves nw 11 ft at 10 seconds - .and W 2 ft at 11 seconds. Sun - N winds 20 to 25 kt - .becoming nw 25 to 35 kt. Waves N 11 ft at 10 seconds - .and sw 2 ft at 19 seconds. Sun night - N winds 25 to 35 kt with gusts to around 45 kt. Waves nw 12 ft at 10 seconds - .and sw 2 ft at 18 seconds. Mon - N winds 20 to 30 kt. Waves N 10 ft at 10 seconds - .and sw 2 ft at 16 seconds. Mon night - N winds 15 to 25 kt. Waves nw 11 ft at 10 seconds - .and sw 2 ft at 16 seconds. Tue - N winds 10 to 20 kt. Waves N 8 ft at 9 seconds. Wed - N winds 10 to 20 kt. Waves N 7 ft at 7 seconds. Thu - N winds 10 to 15 kt. Waves N 7 ft at 8 seconds.

PZZ400 846 Pm Pdt Sat May 18 2024
Synopsis for northern california waters - Gale force northerly winds will subside slightly late tonight over the northern waters, before 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 182139 AFDEKA

AREA FORECAST DISCUSSION National Weather Service Eureka CA 239 PM PDT Sat May 18 2024

SYNOPSIS
Temperatures will be near normal to slightly below normal over the next week as weak fronts move through the region.
Northwesterly winds will be gusty each afternoon particularly at coastal areas and ridges as the sea breeze pushes inland.



DISCUSSION
A cloudy overcast morning quickly gave way to clearing by the afternoon and will last through to the evening as winds build. Model soundings show dry air aloft, mixing down well to the PBL and minimizing overnight fog and stratus effects for most areas overnight, except for Humboldt county. HRRR shows low cloud cover from the north and interior as well as the coast and southern Humboldt. Clearing is expected by Sunday afternoon for the CWA with some high cloud cover over Trinity and southern Humboldt early Sunday morning.

Gusty winds are building presently at the time of this forecast and expected to continue through the evening. A brief reprieve from gusty northerlies will be isolated north of the 40.5N latitude, with gusty northerlies returning Sunday evening. No wind products have been issued as thresholds on land are approaching advisory criteria or are not lasting long enough to warrant products over land. As upper level shortwaves and weak surface reflections of these shortwaves move through the region, the winds will fluctuate slightly with a stronger period of winds Sunday into the first half of the week. On land these winds will be reflected as gusty north- northwesterlies each afternoon into the early evening. Winds will be strongest along ridgelines and northwest to southeast oriented valleys and coastal headlands.

The King Range will likely remain persistently windy throughout the day and night with a more north-northeasterly orientation overnight into the morning hours.

This well mixed lower atmosphere will likely result in limited coverage of the coastal stratus through at least Monday. Moisture within the marine layer will increase by mid-week potentially resulting in higher status coverage in the morning hours despite the continued northerly winds. /RPA /EYS

Aviation
Gusty northerly winds will help keep the terminals in VFR throughout today. Gusts from 25 to 30 kts could be possible along the coast with higher gusts more likely for coastal Del Norte County. For most terminals, winds will calm into this evening allowing the potential for MVFR to IFR ceilings to develop. At CEC, winds are expected to remain elevated making it less likely for cloud cover to develop through this TAF period.

Marine
Northerly gales are expected to persist across the outer waters today, producing hazardous 10-12 foot short period waves across all zones. The highest winds and gusts occurred last night with winds easing a bit today, but still gale force in the outer waters. Significant wave heights to 15 feet at 10-11 seconds are expected in response. Steep and dangerous seas will continue into early next week as gales persist in the outer waters. Current model guidance indicates the strongest winds and wave response shifting to the southern waters by tomorrow before another resurgence of gales early next week. 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 10 AM PDT Monday for PZZ450- 455.

Gale Warning until 10 AM PDT Monday for PZZ470-475.

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Trinidad Harbor
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Sat -- 03:27 AM PDT     1.65 feet Low Tide
Sat -- 03:36 AM PDT     Moonset
Sat -- 05:55 AM PDT     Sunrise
Sat -- 09:13 AM PDT     4.38 feet High Tide
Sat -- 03:02 PM PDT     1.50 feet Low Tide
Sat -- 03:58 PM PDT     Moonrise
Sat -- 08:31 PM PDT     Sunset
Sat -- 09:30 PM PDT     5.75 feet High Tide
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Trinidad Harbor, California, Tide feet

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

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