Monday, April12, 2021
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Marine Weather and Tides
Big Lagoon, CA

Version 3.4
NOTICE
1/26/2021 -- The West Coast Satellite images havd been updated. They now use GEOS-17.
1/1/2021 -- The 7 day forecast are now working well. Thank you NOAA for your support.

Sunrise 6:39AMSunset 7:54PM Monday April 12, 2021 8:54 PM PDT (03:54 UTC) Moonrise 6:17AMMoonset 7:42PM Illumination 1% Phase: Waxing Crescent; Moon at 1 days in cycle
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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PZZ450 Pt St George To Cape Mendocino Out 10 Nm- 804 Pm Pdt Mon Apr 12 2021
.hazardous seas warning in effect through late Tuesday night...
Tonight..N winds 15 to 25 kt. Waves nw 11 ft at 10 seconds.
Tue..N winds 15 to 25 kt with gusts to around 35 kt. Waves N 11 ft at 10 seconds.
Tue night..N winds 20 to 30 kt...easing to 10 to 20 kt. Waves N 11 ft at 10 seconds...and nw 2 ft at 17 seconds.
Wed..N winds 5 to 15 kt. Waves N 8 ft at 8 seconds...and nw 3 ft at 15 seconds.
Wed night..N winds 10 to 20 kt. Waves N 7 ft at 7 seconds... And nw 3 ft at 14 seconds.
Thu..N winds 5 kt. Waves nw 4 ft at 7 seconds...and nw 2 ft at 13 seconds.
Fri..W winds 5 kt. Waves nw 3 ft at 6 seconds...and W 4 ft at 12 seconds.
Sat..NW winds 5 kt. Waves nw 3 ft at 6 seconds...and nw 3 ft at 12 seconds.
PZZ400 804 Pm Pdt Mon Apr 12 2021
Synopsis for northern california waters..Gale force northerlies will generally persist across the outer waters through Wednesday morning. Seas will remain steep and hazardous across the inner waters.


7 Day Forecast for Marine Location Near Big Lagoon, CA
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location: 41.17, -124.32     debug


Area Discussion for - Eureka, CA
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FXUS66 KEKA 122207 AFDEKA

AREA FORECAST DISCUSSION National Weather Service Eureka CA 307 PM PDT Mon Apr 12 2021

SYNOPSIS. Gusty northerly winds will continue along the coast each afternoon and evening today and Tuesday. Otherwise, mostly clear skies with cool nights and mild to warm days are expected.

DISCUSSION. High pressure and offshore flow continues to bring clear skies and dry conditions to the region. As the week progresses, an upper level low drops into eastern Oregon weakening the pressure gradient. Early Tuesday morning the HREF, and to a lesser extend the NBM, is showing some stratus developing in the Eel River Delta and around Humboldt Bay. This seems reasonable with the lighter winds and more northerly flow. Dry conditions and mainly clear skies are expected to continue with this very dry weather system. The most notable change will be temperatures 5 to 10 degrees cooler across the interior areas. Winds will increase across the interior in the afternoon. The coastal areas may actually increase a few degrees as the offshore flow picks up through the day. Mostly clear skies and dry conditions are expected to continue.

Tuesday night into Wednesday morning northeasterly winds (offshore flow) continue to increase. This will be most notable on the ridges near the coast and in southeastern Lake county. Gusts of 20 to 30 mph will be possible on the ridges. Poor RH recoveries are expected during this time. This will elevate fire weather danger in southeastern Lake county.

Wednesday and Thursday the upper level slowly moves off to the and slowly weakens. This will diminish the winds, although inland temperatures will remain in the upper 60s to low 70s. At the coast the lighter winds could bring some stratus as early as Thursday morning as the offshore flow weakens. This may need to be added to the forecast once it gets closer.

Late in the week and into the weekend high pressure is expected to build into the area. This will gradually increase temperatures Thursday through Sunday which will see highs in the low 80s across the interior. Closer to the coast there is more uncertainty in the temperatures and there is the potential for some stratus with the light winds. /MKK /EYS


AVIATION. VFR conditions prevailed at the terminals through midday, with the exception of KACV where light winds allowed some pesky stratus patches to drift over from Humboldt Bay and become pinched along the immediate coast. Daytime heating won out as northerly winds began increasing for the afternoon. Included some wind shear in the TAFs for the northerly and northeasterly winds aloft. Looked most pronounced at KACV, and more marginal elsewhere. The dry northerly flow should prevent much stratus or fog from developing tonight; however, could see a similar migration of patchy low clouds from Humboldt Bay to KACV in the early morning hours for very brief MVFR CIGs and VIS. Gusty northerly winds will develop once again tomorrow, with more northeasterly flow aloft tomorrow night.

MARINE. Gale warnings continue through across the outer waters while winds are expected to reach near gale in the inners late this afternoon. An upper-level low will begin to drop down from the north and nudge west tomorrow night, and this will begin a weakening trend through the first half of this week, with each successive afternoon's pulse in strength weakening with each day. Extended the current marine products in the afternoon package to cover the ongoing hazardous seas that will remain overnight as the gale temporally eases a bit, before cranking back up tomorrow. Seas will continue to be primarily locally generated for the foreseeable future, responding to fluctuations in nearshore northerly winds. Thus, seas will pulse each evening as well, following a similar weakening trend through the first half of this week. The winds look to weaken further late week as the upper-low fades and the gradient becomes diffuse. A well-defined ridge axis is looking likely to move overhead late this week, potentially keeping local winds down through the weekend.

EKA WATCHES/WARNINGS/ADVISORIES. CA . None. NORTHWEST CALIFORNIA COASTAL WATERS . Hazardous Seas Warning until 4 AM PDT Wednesday for PZZ450.

Gale Warning until 4 AM PDT Wednesday for PZZ470-475.

Small Craft Advisory until 4 AM PDT Wednesday for PZZ455.



Visit us at https://www.weather.gov/eureka

Follow us on Facebook and Twitter at: https://www.facebook.com/NWSEureka https://www.twitter.com/NWSEureka

For forecast zone information see the forecast zone map online: https://www.weather.gov/images/eka/zonemap.png


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
TDPC1 12 mi70 min 46°F
46244 - Humboldt Bay, North Spit, CA 19 mi29 min 49°F12 ft
HBYC1 - 9418767 - North Spit, CA 28 mi79 min 50°F1014.2 hPa
NJLC1 28 mi91 min WNW 8.9 G 9.9 50°F
46022 - EEL RIVER - 17NM West-Southwest of Eureka, CA 31 mi35 min N 9.7 G 14 50°F 49°F1014.1 hPa44°F
CECC1 - 9419750 - Crescent City, CA 40 mi55 min N 11 G 18 51°F 49°F1011.5 hPa (-0.8)
46027 - ST GEORGES - 8NM West Northwest of Crescent City, CA 47 mi35 min NNW 27 G 35 45°F1011.9 hPa

Wind History for North Spit, Humboldt Bay, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Arcata / Eureka, Arcata Airport, CA17 mi62 minNNW 76.00 miFair with Haze47°F40°F77%1014 hPa

Link to 5 minute data for KACV

Wind History from ACV (wind in knots)
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Last 24hrSE5SE4SE4NE3CalmCalmSE4E4E3E4Calm--S4W4W6W6NW8NW12NW14
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1 day agoN4NW3E3E4E3E3E3CalmE3CalmE5E4S5CalmW8NW8NW10NW15NW14NW18
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2 days agoN7N8N5N6NE4NE4NE4CalmE3CalmCalmCalmCalmNW9NW14NW14N14N15N16N18N17N16
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Tide / Current Tables for Trinidad Harbor, California
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Trinidad Harbor
Click for Map
Mon -- 12:29 AM PDT     6.29 feet High Tide
Mon -- 06:41 AM PDT     Sunrise
Mon -- 06:53 AM PDT     0.30 feet Low Tide
Mon -- 07:16 AM PDT     Moonrise
Mon -- 01:04 PM PDT     5.57 feet High Tide
Mon -- 06:49 PM PDT     1.39 feet Low Tide
Mon -- 07:53 PM PDT     Sunset
Mon -- 08:41 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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6.26.25.54.32.81.50.60.30.71.734.35.25.65.34.53.42.31.61.41.82.845.2

Tide / Current Tables for Arcata Wharf, Humboldt Bay, California
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Arcata Wharf
Click for Map
Mon -- 01:37 AM PDT     6.86 feet High Tide
Mon -- 06:41 AM PDT     Sunrise
Mon -- 07:16 AM PDT     Moonrise
Mon -- 08:01 AM PDT     0.70 feet Low Tide
Mon -- 02:12 PM PDT     6.07 feet High Tide
Mon -- 07:53 PM PDT     Sunset
Mon -- 07:58 PM PDT     1.78 feet Low Tide
Mon -- 08:40 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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66.76.86.253.62.11.10.71.123.34.65.66.15.95.24.12.92.11.82.13.14.4

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NOTE: This section has been updated as of 1/26/2021. If the image you are expecting is not showing, please let me know. You may use the EDIT function to update your location.
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