Sunday, March7, 2021
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Marine Weather and Tides
Samoa, 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 6:38AMSunset 6:16PM Sunday March 7, 2021 6:46 PM PST (02:46 UTC) Moonrise 3:14AMMoonset 12:22PM Illumination 30% Phase: Waning Crescent; Moon at 24 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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PZZ415 Expires:202103071000;;597834 fzus76 keka 070902 mwseka marine weather statement national weather service eureka ca 102 am pst Sun mar 7 2021 pzz410-415-450-455-470-475-071000- 102 am pst Sun mar 7 2021 a marine weather statement has been issued for the following areas... Coastal waters from cape mendocino to pt. Arena ca out 10 nm... Coastal waters from pt. St. George to cape mendocino ca out 10 nm... Humboldt bay... Humboldt bay bar... Waters from cape mendocino to pt. Arena ca from 10 to 60 nm... Waters from pt. St. George to cape mendocino ca from 10 to 60 nm... At 1259 am pst, doppler radar indicated a line of showers, capable of producing winds to around 30 knots. These showers were located along a line extending from 19 nm west of trinidad head to 34 nm southwest of cape mendocino, moving northeast at 30 knots. Precautionary/preparedness actions... Water spouts are possible along with locally higher waves. Boaters should seek safe harbor immediately until these showers pass. Mariners can expect gusty winds to around 30 knots and locally higher waves. Boaters should seek safe harbor immediately until these storms pass. && lat...lon 4123 12411 4114 12416 4098 12412 4076 12423 4087 12415 4085 12409 4083 12408 4080 12418 4070 12421 4070 12427 4071 12427 4044 12441 4032 12435 4026 12436 4016 12425 3994 12505 4121 12458 4143 12406
PZZ400 236 Pm Pst Sun Mar 7 2021
Synopsis for northern california waters..A large wnw swell is building into the waters today and into tonight. Southerly winds will begin to increase early tomorrow morning as a storm system approaches. Southerlies will continue through early next week from a series of weak storm systems while the wnw swell slowly subsides.


7 Day Forecast for Marine Location Near Samoa, CA
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location: 40.81, -124.19     debug


Area Discussion for - Eureka, CA
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FXUS66 KEKA 072235 AFDEKA

AREA FORECAST DISCUSSION National Weather Service Eureka CA 235 PM PST Sun Mar 7 2021

SYNOPSIS. A cold upper-level storm system will gradually move south along the west coast through mid week. As that takes place, numerous showers will spread inland across northwest California. Snow will occur across the interior mountains, while isolated thunderstorms and small hail will be possible along the coast. Mainly dry weather is expected during the second half of the week.

DISCUSSION. Abundant lightning was observed within the basal portion of a cold upper-level low positioned over the NERN PAC. Downstream from the low, high level cloudiness was spreading east across NWRN CA. Breaks in the cloud cover tonight will aid in frost and freeze conditions over much of Lake and Mendocino Counties, and possibly in the vicinity of Humboldt Bay as well. Otherwise, an upper vort lobe/wave of ascent is forecast to spread east across the EKA CWA by midday Monday. Showers will move inland as a result, and persist through Tuesday morning. Another wave of stronger ascent is then expected to move across the region Tuesday afternoon and evening, which will invigorate shower activity. In addition, steep low and midlevel lapse rates will exist across the area and aid in favorable buoyancy profiles for thunderstorms along the coast and adjacent foothills. Small hail will be probable with the stronger shower/storm activity, and hail accumulations across low-elevation roadways can't be ruled out.

Meanwhile across the interior mountains, deep sub-freezing temperature profiles, steep lapse rates, and persistent westerlies will yield snow showers moving east across elevations above 2000 feet Monday afternoon through Wednesday morning. Heavy snow showers will be capable of producing snowfall rates from 0.5 to 1.0 inch per hour, which will accumulate over time resulting in storm totals from 4 to 12 inches. A long duration winter weather advisory has been issued as a result. Reference the latest advisory statement for additional information.

The previously mentioned upper low is forecast to fill as it moves inland across NRN/CNTRL CA Wednesday afternoon and evening. Showers will continue nevertheless, particularly over Mendocino and Lake Counties. NAM forecast soundings in the vicinity of Ukiah also show fairly robust CAPE profiles during Wednesday afternoon that that extend up through the -40 C level. Thunderstorms and small hail will be possible across interior Mendocino County if that thermodynamic environment materializes.

After Wednesday, upper heights are forecast to build over the west coast. Lingering showers will subsequently dissipate, with upper ridging favoring mainly dry weather through Saturday, if not beyond.

Garner

AVIATION. Overnight rainfall and associated MVFR CIGs quickly wrapped up this morning when VFR conditions returned. Winds turned light offshore, but became westerly in the afternoon. Stronger southerlies will develop very early tomorrow morning ahead of the next weather system, and high clouds are already streaming in from the SW ahead of it today. Rain will push in tomorrow morning with lowering CIGs with the system, with hints of a possible convective squall line on the front end. The precipitation will transition to more isolated showers with some healthier showers and perhaps embedded thunderstorms capable of small hail reaching KCEC and KACV by late morning. This will produce widely varying CIGs, with MVFR to maybe brief IFR conditions accompanying the showers.

MARINE. Light westerly breezes filled in today behind a front, with some slightly stronger northwest breezes south of Cape Mendocino. A fresh westerly swell is building into the waters today, peaking at around 15-17 ft at 16 seconds late tonight, dominating the sea state and supporting Small Craft Advisories through much of the first half of the week. Periods of stronger southerly breezes will also continue through the first half of the week as weak fronts occasionally brush the northern half of the area. It appears a northerly wind regime may develop during the second half of the week as high pressure builds over the region. CB/JJW

EKA WATCHES/WARNINGS/ADVISORIES. CA . Frost Advisory from midnight tonight to 7 AM PST Monday for CAZ103-109-112-113.

Winter Weather Advisory from 1 PM Monday to 4 AM PST Wednesday for CAZ102-105>108-110-111-114.

Freeze Warning from midnight tonight to 7 AM PST Monday for CAZ110-111-114-115.

NORTHWEST CALIFORNIA COASTAL WATERS . Small Craft Advisory until 11 AM PST Tuesday for PZZ450-470-475.

Small Craft Advisory until 11 AM PST Tuesday 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
HBXC1 2 mi62 min 49°F
HBYC1 - 9418767 - North Spit, CA 3 mi71 min 49°F1020.2 hPa
NJLC1 4 mi83 min N 11 G 14 48°F
46244 - Humboldt Bay, North Spit, CA 11 mi21 min 51°F12 ft
TDPC1 17 mi47 min 49°F
46022 - EEL RIVER - 17NM West-Southwest of Eureka, CA 18 mi27 min N 9.7 G 14 50°F 50°F1019.8 hPa38°F
46213 - Cape Mendocino, CA (094) 46 mi51 min 51°F11 ft

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, CA13 mi54 minNNW 78.00 miFair46°F38°F73%1020.4 hPa
Fortuna Rohnerville Airport, CA18 mi52 minNW 910.00 miFair46°F37°F71%1019.6 hPa

Link to 5 minute data for KACV

Wind History from ACV (wind in knots)
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Last 24hrSE4E5E5SE7SE7SE6SE8SE6W15N6E6E6NE5NE3E4CalmNW8NW11NW14NW14NW13NW12NW10N7
1 day agoCalmN3CalmCalmCalmCalmCalmS4S3SE4E3CalmCalmSE44S56SW7W7W6SW6W5SW6S4
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SW4NW7CalmNW4

Tide / Current Tables for Eureka, Humboldt Bay, California (2)
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Eureka
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Sun -- 03:13 AM PST     Moonrise
Sun -- 06:29 AM PST     7.43 feet High Tide
Sun -- 06:40 AM PST     Sunrise
Sun -- 12:22 PM PST     Moonset
Sun -- 01:48 PM PST     -0.15 feet Low Tide
Sun -- 06:15 PM PST     Sunset
Sun -- 09:08 PM PST     5.27 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.43.74.35.26.16.97.47.46.85.64.12.410.1-0.10.31.12.23.34.355.35.14.6

Tide / Current Tables for Fields Landing, Humboldt Bay, California
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Fields Landing
Click for Map
Sun -- 03:13 AM PST     Moonrise
Sun -- 06:02 AM PST     6.94 feet High Tide
Sun -- 06:40 AM PST     Sunrise
Sun -- 12:22 PM PST     Moonset
Sun -- 01:39 PM PST     -0.14 feet Low Tide
Sun -- 06:15 PM PST     Sunset
Sun -- 08:41 PM PST     4.92 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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3.33.64.35.266.76.96.764.83.31.90.7-0-0.10.41.32.33.44.34.84.94.64.1

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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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