Wednesday, April14, 2021
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Marine Weather and Tides
Myrtle, 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 6:36AMSunset 7:56PM Wednesday April 14, 2021 3:50 AM PDT (10:50 UTC) Moonrise 7:07AMMoonset 9:41PM Illumination 6% Phase: Waxing Crescent; Moon at 2 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 245 Am Pdt Wed Apr 14 2021
Synopsis for northern california waters..Strong northerly breezes will persist over the outer waters through this evening, with seas remaining steep and hazardous this morning. Stronger northerlies will diminish by Thursday and remain generally light to moderate through the weekend.


7 Day Forecast for Marine Location Near Myrtle, CA
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location: 40.8, -124.14     debug


Area Discussion for - Eureka, CA
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FXUS66 KEKA 132138 AFDEKA

AREA FORECAST DISCUSSION National Weather Service Eureka CA 238 PM PDT Tue Apr 13 2021

SYNOPSIS. Strong breezy winds continue through tonight but will ease by tomorrow afternoon. Frost advisories are in place for portions of Humboldt and Mendocino as temperatures overnight reduce with moisture lingering at low points.

DISCUSSION. As an upper level low continues to develop over the Great Basin, increases in Northerlies winds with low RH values are a concern. Strong breezy winds continue tonight with low RH values which could increase fire danger. Tonight there is the potential for frost in the interior valleys and so a frost advisory has been issued for portions of Humboldt and Mendocino. Areas of Trinity county may also get frost, especially near Weaverville and Douglas city where growing season has yet to commence.

Wednesday through Thursday the upper level low remains over the great basin but starts to weaken. This will allow the winds to diminish, but temperatures will remain mainly in the 60s to the low 70s, warmest in the inland valleys. Wednesday night with lighter winds frost looks more likely and additional advisories may be needed. The coast may see a return of stratus which would prevent frost, but confidence is low on this and have not added it to the forecast yet. Thursday inland temperatures may warm a few degrees, but with the low nearby they are not expected to warm much.

Friday and into the weekend the ensembles are in good agreement on a strong ridge building over the west. Most inland valleys will see temperatures in the upper 70s Friday. Temperatures will continue to climb into the weekend withs highs around 80 on Saturday and mid 80s possible on Sunday. The ensembles are in good agreement on the ridge of high pressure and the warm temperatures and confidence is higher than normal on this. There is still some uncertainty in the local effects and in this case that is mainly the cloud cover at the coast. This could keep temperatures cooler than currently forecast.

Early next week the ensembles are showing the ridge starting to break down. The challenge will be how quickly this occurs and the ensembles are showing low confidence in the timing of it breaking down. Some of the ensemble clusters keep the ridge on Tuesday and others break it down more quickly. One of the clusters even brings some rain on Tuesday. /MKK /EYS

AVIATION. Some lingering overnight patchy fog and stratus quickly dissipated this morning as widespread VFR conditions took over. Gusty northerly surface winds will be maintained overnight along the coast. Winds at near 2000 ft AGL will turn northeasterly up to 30 kts overnight, warranting the addition of LLWS for the TAFs. The dry offshore flow should finally quell stratus formation tonight. The periphery of an upper-low looks to create some harmless elevated inland afternoon cumulus/mid-level cloud formation tomorrow, including at KUKI. Northerly winds will begin a weakening trend tomorrow.

MARINE. The tight coastal pressure gradient responsible for the strong northerlies from the combination of high pressure offshore and persistent deep troughing over the Great Basin will become enervated as both systems slowly breakdown. Gale Warnings remain in effect through late tonight for the outer waters. The strongest winds will generally remain farther offshore, but steep wind generated seas will continue to propagate into the nearshore waters and create hazardous conditions through tonight. A Hazardous Seas Warning therefore remains in effect through late tonight for the inner zones. Small Craft advisory conditions will likely remain this week and into Thursday as the gradient slowly unwinds. Seas will continue to be primarily locally generated for this week, responding to fluctuations in nearshore northerly winds. A clipping shortwave may quickly invigorate the winds over northern portions of the Northern Outer waters beginning tomorrow evening before quickly backing off by the early Thursday morning.

EKA WATCHES/WARNINGS/ADVISORIES. CA . Frost Advisory from 3 AM to 9 AM PDT Wednesday for CAZ106-111.

NORTHWEST CALIFORNIA COASTAL WATERS . Hazardous Seas Warning until 3 AM PDT Wednesday for PZZ450.

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

Hazardous Seas Warning until 9 PM PDT this evening 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 3 mi51 min 48°F
HBYC1 - 9418767 - North Spit, CA 5 mi75 min 48°F1013.1 hPa
NJLC1 6 mi87 min SE 5.1 G 6 43°F
46244 - Humboldt Bay, North Spit, CA 13 mi55 min 49°F8 ft
TDPC1 18 mi51 min 47°F
46022 - EEL RIVER - 17NM West-Southwest of Eureka, CA 21 mi31 min NNE 3.9 G 5.8 48°F 49°F1012.8 hPa46°F
46213 - Cape Mendocino, CA (094) 47 mi25 min 49°F9 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 mi58 minN 09.00 miFair38°F36°F93%1013.5 hPa
Fortuna Rohnerville Airport, CA17 mi61 minSE 1110.00 miFair37°F37°F100%1012.9 hPa

Link to 5 minute data for KACV

Wind History from ACV (wind in knots)
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Last 24hrE3CalmE5E4E3S5CalmW6CalmNW10NW12NW11NW14NW10
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Tide / Current Tables for Eureka Slough Bridge, Humboldt Bay, California
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Eureka Slough Bridge
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Wed -- 02:06 AM PDT     7.36 feet High Tide
Wed -- 06:38 AM PDT     Sunrise
Wed -- 08:06 AM PDT     Moonrise
Wed -- 08:29 AM PDT     0.20 feet Low Tide
Wed -- 03:18 PM PDT     6.04 feet High Tide
Wed -- 07:55 PM PDT     Sunset
Wed -- 08:15 PM PDT     2.60 feet Low Tide
Wed -- 10:41 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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6.177.47.164.42.71.20.30.312.13.54.75.665.95.24.13.12.62.83.44.5

Tide / Current Tables for Humboldt Bay Entrance, California
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Humboldt Bay Entrance
Click for Map
Wed -- 01:25 AM PDT     6.06 feet High Tide
Wed -- 06:39 AM PDT     Sunrise
Wed -- 08:07 AM PDT     Moonrise
Wed -- 08:24 AM PDT     0.20 feet Low Tide
Wed -- 02:37 PM PDT     4.84 feet High Tide
Wed -- 07:55 PM PDT     Sunset
Wed -- 08:10 PM PDT     2.55 feet Low Tide
Wed -- 10:41 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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5.5665.44.43.11.80.80.20.312.13.24.24.74.84.543.32.82.62.73.44.3

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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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