Sunrise 5:57 AM   Sunset 8:21 PM Moonrise 11:59 AM   Moonset 1:30 AM

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PZZ455 Cape Mendocino To Pt Arena Out 10 Nm- 249 Am Pdt Wed May 15 2024
Today - S winds 5 to 10 kt. Waves nw 7 ft at 9 seconds - .and nw 3 ft at 12 seconds. Patchy dense fog. Tonight - W winds 5 to 10 kt - .becoming nw 10 to 20 kt. Waves nw 7 ft at 9 seconds - .and nw 3 ft at 11 seconds. Patchy dense fog. Thu - SW winds 10 to 20 kt. Waves nw 8 ft at 9 seconds - .and nw 3 ft at 11 seconds. Patchy fog. Thu night - NW winds 10 to 20 kt. Waves N 9 ft at 10 seconds - .and W 2 ft at 10 seconds. Fri - NW winds 15 to 25 kt. Waves nw 10 ft at 10 seconds - .and S 2 ft at 18 seconds. Sat - NW winds 10 to 20 kt. Waves nw 10 ft at 10 seconds. Sun - NW winds 15 to 25 kt. Waves nw 11 ft at 10 seconds - .and sw 3 ft at 18 seconds.

PZZ400 249 Am Pdt Wed May 15 2024
Synopsis for northern california waters - Northerly gales in the northern outer waters will continue for at least the next few days. Large, short- period seas are forecast to build each afternoon and overnight, with the highest wave heights in the northern outer waters. This pattern is forecast to persist for the latter portion of the week and into the weekend.

FXUS66 KEKA 151132 AFDEKA

AREA FORECAST DISCUSSION National Weather Service Eureka CA 432 AM PDT Wed May 15 2024

SYNOPSIS
A summer-like weather pattern will persist through the week with hot and dry afternoons in the interior and low clouds and fog along the coast.

DISCUSSION
A generally quiet, summer-like pattern persists through this week. Offshores aloft have kept skies clear for interior NW California and most of the coast north of Cape Mendocino. High temperatures are forecast to peak this afternoon, about 15F above mid May normals. This minor warm up (highs in the upper 80's to mid 90's) may create a moderate heat risk for sensitive groups. Interior temperatures are forecast to then trend down for the remainder of the week, but remain above normal. A transient shortwave trough is forecast to move into the Pac NW Thu into Fri and may induce a deeper push of marine air with greater coverage of low clouds into the interior valleys. Some coastal drizzle is not completely impossible, but for now will not add any to the forecast with low probabilities for measurement.

Additional troughs will knock down the ridge over the weekend for a continued downward trend of high temperatures. The rate of decrease and the magnitude of "cooling" are not completely certain. NBM probabilities for 80F or more for our warmest interior valleys are still around 50-60% and no more than 10% for 90F or more. A deeper trough scenario would yield near or slightly below normal temperatures for the interior valleys; lower to mid 70's. This is a low probability outcome with only 16% of ensemble members in this camp this weekend. There are indications for breezier or windier conditions with these troughs over the weekend into early next week.
Stronger NW-W breezes may help to knock down interior temperatures below normal early to mid next week. DB

AVIATION
Offshore flow has spread across the coast from Cape Mendo to the Oregon border, helping to keep the coastal terminals clear overnight. Meanwhile the Mendocino coast remains shrouded in stratus. Offshore winds aloft will become strong enough to warrant LLWS at CEC this morning, and this flow is expected to weaken by late this morning. Some model data is once again indicating stratus developing again late tonight along the Redwood Coast. The signal looks better tonight than it did last night...confidence is low on the details of this potential cloud layer, especially on if it will surge northward toward KCEC. Have hinted at it in the TAFs either way.

MARINE
Northerly gales are expected to persist over the northern outer waters through much of week. Wind magnitudes appear to be modulated by interior heat and a resultant thermal trough along the CA-OR coasts. Therefore, strongest winds will most likely occur during the afternoon and evening hours. Large and very steep short period seas will lag behind the strongest winds and probably persist into the late night and morning hours. Thus, the long duration gale warning for the northern outer waters through Friday evening appears to be on track. The gale may need to be extended into the weekend and/or expanded southward into zone 475 by Saturday.

Closer to shore, winds are forecast to remain much more subdued with the usual wind-prone points like Pt St George gusting to 35-40kt during the late afternoon and evening hours. Winds have been shifting to southerly across the southern inner waters as multiple small scale eddies spin up in the lee of the Cape Mendo.

Also, small NW and S swells are forecast to move through the waters through the week. Seas will remain primarily locally generated and dominated by short-period northerlies from the wind speed maximums in the northern outers. Short period seas look to hit another maximum late tonight...with hazardous seas propagating into the inner waters north of Cape Mendocino late tonight. Granted the largest and steepest waves look to occur across the outer fringes of the inner waters.

The northerly wind pattern with steep short period waves will most likely persist into the latter portion of the week. There are subtle indications for stronger N-NW winds to shift into the inner waters over the weekend as an trough drops down from the northwest and pressure gradients tighten up across the area. DB

EKA WATCHES/WARNINGS/ADVISORIES
CA...
None.
NORTHWEST CALIFORNIA COASTAL WATERS...
Hazardous Seas Warning until 9 AM PDT Thursday for PZZ450.

Gale Warning until 11 PM PDT Friday for PZZ470.

Hazardous Seas Warning until 3 AM PDT Friday for PZZ475.

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Mendocino
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Wed -- 12:05 AM PDT     2.88 feet Low Tide
Wed -- 02:30 AM PDT     Moonset
Wed -- 04:47 AM PDT     4.24 feet High Tide
Wed -- 04:49 AM PDT     First Quarter
Wed -- 06:01 AM PDT     Sunrise
Wed -- 12:05 PM PDT     0.30 feet Low Tide
Wed -- 12:58 PM PDT     Moonrise
Wed -- 07:24 PM PDT     4.63 feet High Tide
Wed -- 08:22 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION

Mendocino, Mendocino Bay, California, Tide feet

Point Cabrillo
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Wed -- 12:59 AM PDT     0.00 knots Slack
Wed -- 02:30 AM PDT     Moonset
Wed -- 03:24 AM PDT     0.36 knots Max Flood
Wed -- 04:49 AM PDT     First Quarter
Wed -- 05:53 AM PDT     -0.00 knots Slack
Wed -- 06:01 AM PDT     Sunrise
Wed -- 09:07 AM PDT     -0.87 knots Max Ebb
Wed -- 12:58 PM PDT     Moonrise
Wed -- 01:20 PM PDT     0.00 knots Slack
Wed -- 04:43 PM PDT     0.80 knots Max Flood
Wed -- 07:47 PM PDT     -0.00 knots Slack
Wed -- 08:22 PM PDT     Sunset
Wed -- 10:52 PM PDT     -0.51 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION

Point Cabrillo, California Current, knots

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