Marine Weather and Tide Forecast for Alderpoint, CA
![]() | Sunrise 5:55 AM Sunset 8:29 PM Moonrise 6:10 AM Moonset 10:23 PM |
Marine Forecasts
NOTE: Zones updated 4/16/2026. Some zones changed. Use Edit if needed.
PZZ455 Coastal Waters From Cape Mendocino To Pt. Arena Ca Out 10 Nm- 935 Am Pdt Mon May 18 2026
.small craft advisory in effect through late Wednesday night - .
Rest of today - NW wind 15 to 20 kt, rising to 20 to 25 kt with gusts up to 35 kt this afternoon. Seas 8 ft. Wave detail: nw 8 ft at 10 seconds and W 3 ft at 19 seconds.
Tonight - N wind 20 to 25 kt. Seas 10 ft. Wave detail: nw 10 ft at 10 seconds and nw 5 ft at 16 seconds.
Tue - NW wind 20 to 25 kt with gusts up to 35 kt. Seas 10 ft. Wave detail: nw 10 ft at 10 seconds and nw 4 ft at 14 seconds.
Tue night - N wind 20 to 25 kt. Seas 9 ft. Wave detail: nw 9 ft at 12 seconds.
Wed - NW wind 20 to 25 kt with gusts up to 40 kt. Seas 8 ft. Wave detail: nw 8 ft at 11 seconds.
Wed night - N wind 20 to 25 kt with gusts up to 35 kt. Seas around 9 ft. Wave detail: nw 9 ft at 10 seconds.
Thu - NW wind 15 to 20 kt. Seas 8 ft. Wave detail: nw 8 ft at 10 seconds.
Thu night - N wind 15 to 20 kt. Seas 8 ft. Wave detail: nw 8 ft at 10 seconds and S 2 ft at 14 seconds.
Fri - NW wind 15 to 20 kt. Seas 9 ft. Wave detail: nw 9 ft at 10 seconds and sw 2 ft at 16 seconds.
Fri night - N wind 10 to 15 kt. Seas 9 ft. Wave detail: nw 9 ft at 10 seconds and S 2 ft at 15 seconds.
PZZ400 935 Am Pdt Mon May 18 2026
Synopsis for northern california waters - NEar gale to gale force northerly winds continue early this week. The stronger winds have pushed slightly farther off the coast, although there may be brief threat for gales in afternoon and evening. These winds are expected to continue through much of the workweek. A longer period swell is expected to build to 6 feet at 17 seconds this afternoon and then diminish.
7 Day Forecast for Marine Location Near Alderpoint, CA

NEW! Add second zone forecast
| Shelter Cove Click for Map Mon -- 05:58 AM PDT Sunrise Mon -- 07:05 AM PDT -1.90 feet Low Tide Mon -- 07:13 AM PDT Moonrise Mon -- 02:12 PM PDT 4.86 feet High Tide Mon -- 06:47 PM PDT 2.90 feet Low Tide Mon -- 08:27 PM PDT Sunset Mon -- 11:25 PM PDT Moonset Tide / Current data from XTide NOT FOR NAVIGATION |   |
Shelter Cove, California, Tide feet
| 12 am |
| 6.9 |
| 1 am |
| 6.4 |
| 2 am |
| 5.2 |
| 3 am |
| 3.4 |
| 4 am |
| 1.5 |
| 5 am |
| -0.3 |
| 6 am |
| -1.5 |
| 7 am |
| -1.9 |
| 8 am |
| -1.6 |
| 9 am |
| -0.6 |
| 10 am |
| 0.6 |
| 11 am |
| 2 |
| 12 pm |
| 3.4 |
| 1 pm |
| 4.4 |
| 2 pm |
| 4.8 |
| 3 pm |
| 4.7 |
| 4 pm |
| 4.2 |
| 5 pm |
| 3.5 |
| 6 pm |
| 3 |
| 7 pm |
| 2.9 |
| 8 pm |
| 3.3 |
| 9 pm |
| 4.1 |
| 10 pm |
| 5.1 |
| 11 pm |
| 6.1 |
| Westport Click for Map Mon -- 05:58 AM PDT Sunrise Mon -- 07:09 AM PDT -2.01 feet Low Tide Mon -- 07:13 AM PDT Moonrise Mon -- 02:18 PM PDT 4.24 feet High Tide Mon -- 06:28 PM PDT 2.48 feet Low Tide Mon -- 08:25 PM PDT Sunset Mon -- 11:22 PM PDT Moonset Tide / Current data from XTide NOT FOR NAVIGATION |   |
Westport, California, Tide feet
| 12 am |
| 6.8 |
| 1 am |
| 6.4 |
| 2 am |
| 5.2 |
| 3 am |
| 3.5 |
| 4 am |
| 1.6 |
| 5 am |
| -0.2 |
| 6 am |
| -1.5 |
| 7 am |
| -2 |
| 8 am |
| -1.8 |
| 9 am |
| -0.9 |
| 10 am |
| 0.3 |
| 11 am |
| 1.7 |
| 12 pm |
| 3 |
| 1 pm |
| 3.8 |
| 2 pm |
| 4.2 |
| 3 pm |
| 4.1 |
| 4 pm |
| 3.6 |
| 5 pm |
| 3 |
| 6 pm |
| 2.5 |
| 7 pm |
| 2.5 |
| 8 pm |
| 3 |
| 9 pm |
| 3.8 |
| 10 pm |
| 4.9 |
| 11 pm |
| 5.8 |
FXUS66 KEKA 180741 AFDEKA
AREA FORECAST DISCUSSION National Weather Service Eureka CA 1241 AM PDT Mon May 18 2026
SYNOPSIS
Gusty north winds continue to ease today. Clear and dry conditions will remain through the week with a warming trend through Thursday.
KEY MESSAGES
-Strong north winds will weaken today and through the week with only moderate north winds close to shore.
-Generally clear skies and dry conditions, even along shore, through the week.
-Conditions will warm through Thursday with highs in the interior peaking near 90.
DISCUSSION
Strong north winds continue to subside for Northwest California, especially near shore when compared to yesterday, but will persist through early today around the rim of the Sacramento Valley, especially Lake County. Strong mixing will continue to keep skies clear as temperatures begin to warm, especially across the interior. Wind overnight will continue to preclude any frost formation.
High pressure will already begin to weaken but move more onshore today and through the week. This will lead to much weaker north winds with some moderate gusts to 20 mph still pushing in right along shore in the afternoon. Interior winds will transition to a more terrain controlled regime. Conditions will remain very dry with warming temperatures through the week. Highs will most likely top out around 90 for the interior on Thursday. This will constitute only a minor HeatRisk for this time of year. Hotter temperatures will help reform a marine inversion. Any stratus and fog; however, will most likely be very shallow and mix out quickly during the day.
Compared to previous runs, most ensemble members continue to show a weak trough in the far extended forecast, but have it delayed until after next week. Rather most models show high pressure slowly weakening, allow temperature to drop, through next weekend. A trough early next week could bring some light showers or thunderstorms, but the vast majority of models currently remain dry. /JHW
AVIATION
VFR conditions are expected for terminals in Northwest California as gusty north winds remain elevated, but quickly diminish early this morning. Winds will remain elevated for higher elevation areas of the Yolla Bollys and Lake County.
Winds have diminished for more protected areas; however, winds remain elevated aloft, bringing LLWS concerns mostly for Mendocino County.
MARINE
The pressure gradient relaxes slightly and the strongest winds move farther off the coast as the high pressure builds in. However, a large area of gale force gusts around 34-45 kts expected across all zones, with the strongest winds downwind of Cape Mendocino. Steep to very steep, hazardous seas will continue with the elevated winds. Conditions will remain hazardous across the waters for much of the workweek with strong to gale force gusts north winds and steep to very steep seas. Gale force winds and very steep seas are forecast to persists across the outer waters through Friday. /ZVS
FIRE WEATHER
Strong north winds will continue, but diminish into the early morning. Winds will especially remain elevated around the rim of the Sacramento Valley and in Lake County today. Winds will weaken by this evening and transition to more gentle terrain wind through the week. Conditions will remain very dry with high temperatures increasing to near 90 for the interior by Thursday.
EKA WATCHES/WARNINGS/ADVISORIES
CA...
None.
NORTHWEST CALIFORNIA COASTAL WATERS...
Gale Warning until 3 AM PDT early this morning for PZZ450- 455.
Gale Warning until 3 AM PDT Wednesday for PZZ470-475.
AREA FORECAST DISCUSSION National Weather Service Eureka CA 1241 AM PDT Mon May 18 2026
SYNOPSIS
Gusty north winds continue to ease today. Clear and dry conditions will remain through the week with a warming trend through Thursday.
KEY MESSAGES
-Strong north winds will weaken today and through the week with only moderate north winds close to shore.
-Generally clear skies and dry conditions, even along shore, through the week.
-Conditions will warm through Thursday with highs in the interior peaking near 90.
DISCUSSION
Strong north winds continue to subside for Northwest California, especially near shore when compared to yesterday, but will persist through early today around the rim of the Sacramento Valley, especially Lake County. Strong mixing will continue to keep skies clear as temperatures begin to warm, especially across the interior. Wind overnight will continue to preclude any frost formation.
High pressure will already begin to weaken but move more onshore today and through the week. This will lead to much weaker north winds with some moderate gusts to 20 mph still pushing in right along shore in the afternoon. Interior winds will transition to a more terrain controlled regime. Conditions will remain very dry with warming temperatures through the week. Highs will most likely top out around 90 for the interior on Thursday. This will constitute only a minor HeatRisk for this time of year. Hotter temperatures will help reform a marine inversion. Any stratus and fog; however, will most likely be very shallow and mix out quickly during the day.
Compared to previous runs, most ensemble members continue to show a weak trough in the far extended forecast, but have it delayed until after next week. Rather most models show high pressure slowly weakening, allow temperature to drop, through next weekend. A trough early next week could bring some light showers or thunderstorms, but the vast majority of models currently remain dry. /JHW
AVIATION
VFR conditions are expected for terminals in Northwest California as gusty north winds remain elevated, but quickly diminish early this morning. Winds will remain elevated for higher elevation areas of the Yolla Bollys and Lake County.
Winds have diminished for more protected areas; however, winds remain elevated aloft, bringing LLWS concerns mostly for Mendocino County.
MARINE
The pressure gradient relaxes slightly and the strongest winds move farther off the coast as the high pressure builds in. However, a large area of gale force gusts around 34-45 kts expected across all zones, with the strongest winds downwind of Cape Mendocino. Steep to very steep, hazardous seas will continue with the elevated winds. Conditions will remain hazardous across the waters for much of the workweek with strong to gale force gusts north winds and steep to very steep seas. Gale force winds and very steep seas are forecast to persists across the outer waters through Friday. /ZVS
FIRE WEATHER
Strong north winds will continue, but diminish into the early morning. Winds will especially remain elevated around the rim of the Sacramento Valley and in Lake County today. Winds will weaken by this evening and transition to more gentle terrain wind through the week. Conditions will remain very dry with high temperatures increasing to near 90 for the interior by Thursday.
EKA WATCHES/WARNINGS/ADVISORIES
CA...
None.
NORTHWEST CALIFORNIA COASTAL WATERS...
Gale Warning until 3 AM PDT early this morning for PZZ450- 455.
Gale Warning until 3 AM PDT Wednesday for PZZ470-475.
Wind History for Arena Cove, CA
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Airport Reports
Link to 1 hour of 5 minute data for KFOT
Terminal Aerodrome Forecast (TAF) for KFOT
Wind History Graph: FOT
(wind in knots)GEOS Local Image of Central West Coast
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