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Marine Weather and Tide Forecast for Alderpoint, CA

April 22, 2025 4:10 PM PDT (23:10 UTC) Change Location
Sunrise 6:24 AM   Sunset 8:04 PM
Moonrise 2:47 AM   Moonset 1:09 PM 
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NOTE: Some of the data on this page has not been verified and should be used with that in mind. It may and occasionally will, be wrong. The tide reports are by xtide and are NOT FOR NAVIGATION.

Marine Forecasts
   
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NOTE: Zones were updated 3/20/2025
PZZ455 Cape Mendocino To Pt Arena Out 10 Nm- 215 Pm Pdt Tue Apr 22 2025

.small craft advisory in effect through Wednesday afternoon - .

Tonight - NW wind 25 to 30 kt, easing to 20 to 25 kt after midnight. Seas 9 ft. Wave detail: nw 9 ft at 9 seconds. Patchy fog after midnight.

Wed - NW wind 20 to 25 kt with gusts up to 35 kt. Seas 8 ft. Wave detail: nw 8 ft at 10 seconds and S 2 ft at 18 seconds. Patchy fog.

Wed night - NW wind 15 to 20 kt. Seas 8 ft. Wave detail: N 8 ft at 9 seconds and sw 2 ft at 18 seconds.

Thu - NW wind 10 to 15 kt. Seas 7 ft. Wave detail: N 6 ft at 7 seconds and nw 3 ft at 13 seconds.

Thu night - NW wind 10 to 15 kt. Seas 6 ft. Wave detail: nw 5 ft at 5 seconds and nw 3 ft at 12 seconds.

Fri - W wind 5 to 10 kt. Seas 5 ft. Wave detail: nw 5 ft at 5 seconds and nw 3 ft at 12 seconds. Showers likely.

Fri night - NW wind 10 kt. Seas 5 ft. Wave detail: nw 4 ft at 5 seconds and nw 3 ft at 11 seconds. A chance of showers.

Sat - NW wind 10 to 15 kt. Seas 6 ft. Wave detail: nw 5 ft at 5 seconds and nw 4 ft at 11 seconds.

Sat night - NW wind 15 to 20 kt. Seas 7 ft. Wave detail: N 6 ft at 6 seconds and nw 4 ft at 10 seconds.

Sun - NW wind 15 to 20 kt. Seas 7 ft. Wave detail: N 7 ft at 7 seconds and nw 3 ft at 10 seconds.

Sun night - N wind 20 to 25 kt. Seas 8 ft. Wave detail: N 8 ft at 7 seconds and nw 2 ft at 16 seconds.
PZZ400 215 Pm Pdt Tue Apr 22 2025

Synopsis for northern california waters - NEar gale to gale force northerlies will continue in the outer waters through Wednesday. A few of these stronger winds may make it closer to the coast in the afternoon and evenings, especially near point st george and cape mendocino. The inner waters will mostly see fresh to strong northerly breezes each afternoon through Wednesday with lighter winds close to shore and overnight. Steep short period seas up to 15 feet will dominate through at least Wednesday evening.

7 Day Forecast for Marine Location Near Alderpoint, CA
   
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Tide / Current for Shelter Cove, California
  
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Shelter Cove
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Tue -- 01:20 AM PDT     2.97 feet Low Tide
Tue -- 03:49 AM PDT     Moonrise
Tue -- 06:27 AM PDT     4.95 feet High Tide
Tue -- 06:27 AM PDT     Sunrise
Tue -- 01:35 PM PDT     0.11 feet Low Tide
Tue -- 02:11 PM PDT     Moonset
Tue -- 08:02 PM PDT     Sunset
Tue -- 08:32 PM PDT     4.95 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
        
  Sorry, Shelter Cove, California does not exist in database. Press Edit above and select a valid nearby location.

Shelter Cove, California, Tide feet
12
am
3.2
1
am
3
2
am
3
3
am
3.4
4
am
4
5
am
4.5
6
am
4.9
7
am
4.9
8
am
4.5
9
am
3.7
10
am
2.6
11
am
1.6
12
pm
0.7
1
pm
0.2
2
pm
0.2
3
pm
0.6
4
pm
1.4
5
pm
2.5
6
pm
3.5
7
pm
4.4
8
pm
4.9
9
pm
4.9
10
pm
4.5
11
pm
3.9

Tide / Current for Westport, California
  
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Westport
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Tue -- 01:16 AM PDT     2.87 feet Low Tide
Tue -- 03:46 AM PDT     Moonrise
Tue -- 06:27 AM PDT     Sunrise
Tue -- 06:35 AM PDT     4.65 feet High Tide
Tue -- 01:30 PM PDT     0.01 feet Low Tide
Tue -- 02:10 PM PDT     Moonset
Tue -- 08:00 PM PDT     Sunset
Tue -- 08:40 PM PDT     4.65 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
        
  Sorry, Westport, California does not exist in database. Press Edit above and select a valid nearby location.

Westport, California, Tide feet
12
am
3.1
1
am
2.9
2
am
2.9
3
am
3.3
4
am
3.7
5
am
4.2
6
am
4.6
7
am
4.6
8
am
4.3
9
am
3.5
10
am
2.5
11
am
1.4
12
pm
0.5
1
pm
0.1
2
pm
0.1
3
pm
0.5
4
pm
1.3
5
pm
2.2
6
pm
3.2
7
pm
4
8
pm
4.5
9
pm
4.6
10
pm
4.3
11
pm
3.7

Area Discussion for Eureka, CA
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FXUS66 KEKA 222135 AFDEKA

AREA FORECAST DISCUSSION National Weather Service Eureka CA 235 PM PDT Tue Apr 22 2025

SYNOPSIS
Cooler overnight temperatures with pleasant daytime highs will continue again on Wednesday although winds will be lighter. Clouds, cooler temperatures and a chance of rain is forecast Thursday afternoon through Saturday. Dry weather is expected to return Sunday and into next week.

DISCUSSION
High pressure continues to bring clear skies and dry conditions across the area this afternoon. Tonight a shortwave moves by to the north. This will weaken the pressure gradient diminishing the winds, but otherwise there isn't much of an impact expected. The offshore flow could limit the coastal clouds late tonight and in the morning, but confidence is low on this. Wednesday afternoon winds will be lighter than today across the area. High temperatures are expected to start their cooling trend. Also on Wednesday over southeastern Trinity county and northeast Mendocino counties there is slight chance for a shower or possible a thunderstorm in the afternoon. Mid level lapse rates around 7c/km and there is around 200 j/kg of surface cape. Any showers that do form are expected to quickly move east and out of the area. Wednesday night more widespread coastal clouds are expected as the flow becomes more onshore. There is the potential for additional showers or possible a thunderstorm on Thursday as well. Lapse rates are slightly weaker, but instability is still around 200 j/kg of surface CAPE. Both days the flow is out of the west or southwest and not a particularly favorable pattern for thunderstorms.

Friday more widespread showers are expected as the trough becomes more of a closed low and moves overhead. The cloud cover is expected to limit surface heating and curb the potential for any thunderstorms. Highs are only expected to be in the 50s in most areas. Much of the area has a 40 to 60 percent chance of seeing more than a tenth of an inch of rain, but only the mountains of Humboldt and Del Norte counties have close to a 50 percent probability of exceeding a half inch. Saturday the upper level low is moving out of the area and few lingering showers are possible.
Saturday night the moisture around is expected to limit the potential for frost, but temperatures will likely drop into the 30s in the interior valleys. Highs on Saturday are expected to be in the 50s again with slowly clearing skies. Saturday night is likely going to be the coldest night with lows in the colder areas of the interior dropping into the low to mid 30s. Sunday skies are expected to finally clear fully, but highs are only expected to be in the 60s. MKK

AVIATION
Mainly VFR conditions at all TAF terminals this afternoon, but reduced visibility in haze is possible due to sea spray. Breezy NNW winds at 15-25 kts and gusts from 20 to around 30 kts along the coastal terminals into this evening, with the strongest winds at KCEC. Winds will gradually ease after 23/02Z, however breezy conditions will prevail at CEC through at least 23/10Z. Stratus is expected to redevelop in the vicinity of Humboldt Bay, as well as extend along the Eel River late tonight.
Southerly winds nearshore may bring back IFR ceilings into ACV late tonight into Wednesday morning. There is a chance of 20-30% for ceilings below 1000 feet by early Wednesday morning at KACV.

MARINE
Gales continue across the waters near the capes and beyond 10 miles. This is also creating steep waves of 10 to 15 feet. Tonight the winds are expected to start to diminish. The gale warnings end at 3pm Wednesday and this looks on track. The steep short period waves are expected to propagate into the inner waters and a hazardous seas warning is in place for the northern inner waters that are expected to to see the biggest waves closer to the coast. This ends at 9am Wednesday, but these may diminish sooner than expected.

Wednesday night and Thursday the winds are expected to continue to slowly diminish. These are expected to the be the lightest late Thursday night and Friday morning as a weather system moves by to the north. There will likely be a short time where they are southerly although the models are struggling to resolve the exact timing on this. Friday night and into the weekend it looks like northerly winds will return. At this point it doesn't look like the winds will be gale force, but this may change as it comes into range of the high resolution models. MKK

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

Small Craft Advisory until 3 PM PDT Wednesday for PZZ455.

Gale Warning until 3 PM PDT Wednesday for PZZ470-475.


Weather Reporting Stations
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Wind History for Arena Cove, CA
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GEOS Local Image of Central West Coast  
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Eureka, CA,





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