Wednesday, December11, 2019
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Marine Weather and Tides
Manila, CA

Version 3.4
NOTICE
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 7:29AMSunset 4:50PM Wednesday December 11, 2019 2:39 AM PST (10:39 UTC) Moonrise 4:44PMMoonset 6:52AM Illumination 100% Phase: Full Moon; Moon at 14 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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PZZ410 1119 Am Pdt Mon Sep 16 2019
.isolated strong Thunderstorms over the coastal waters... The areas affected include... Coastal waters from point saint george to cape mendocino ca out 60 nm... At 1114 am, doppler radar indicated a few strong Thunderstorms, capable of producing wind gusts to around 30 knots, from 5 nm northwest of orick to 45 nm west of patrick's point. These storms are moving southeast at 10 knots. Precautionary/preparedness actions... Mariners can expect gusty winds to around 30 knots, locally higher waves, and lightning strikes. Boaters should seek safe harbor immediately until these storms passes. && lat...lon 4174 12416 4145 12406 4123 12411 4114 12416 4105 12415 4106 12414 4102 12411 4070 12426 4071 12426 4058 12435 4083 12572 4096 12565 4178 12460 4178 12426
PZZ400 835 Pm Pst Tue Dec 10 2019
Synopsis for northern california waters..A stronger front will move through the waters late tomorrow bringing increased southerlies and steep seas to mainly the northern waters. A large, long period west to northwest swell is forecast to impact the waters on Thursday and Friday.


7 Day Forecast for Marine Location Near Manila, CA
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location: 40.83, -124.16     debug


Area Discussion for - Eureka, CA
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FXUS66 KEKA 102347 AFDEKA

AREA FORECAST DISCUSSION National Weather Service Eureka CA 347 PM PST Tue Dec 10 2019

SYNOPSIS. A weak front is bringing light rain to Northwest California this evening, followed by a brief period of drier weather for part of Wednesday. An extended period of wet weather will follow, with on and off light to moderate rain from Wednesday night through Friday or Saturday. Snow levels will remain over 6,000 feet until Saturday when they fall to around 3,000 feet.

DISCUSSION. Short Term. (through Wednesday). A frontal boundary has just started to make it's way onshore. This is bringing southeast winds of 10 to 20 mph with gusts to 30 mph on the ridges. Rainfall amounts are generally expected to be less than a half inch with this first boundary. This rain is expected to move through fairly quickly with rain tapering off this evening. There may be a few lingering showers overnight. Towards morning there may be some fog that develops in the interior valleys.

Wednesday is expected to generally be a dry day across the area. A moist zonal flow is setting up across the area and there may be some showers in the upslope areas. Generally this will be a fairly warm day at the coast, so increased the temperatures a few degrees above guidance and into the low 60s.

Long Term. (Wednesday night through Monday) Light to moderate rain will then expand across our region Wednesday night into Thursday as a fairly strong westerly Pacific jet takes aim, between a strong upper-low over the Gulf of Alaska and a flattening upper ridge off the southern California coast. IVT values will not be particularly impressive, but will be maximized as vectors orient perpendicularly to the coast. A number of impulses will pass through the zonal flow, enhancing the coverage and intensity of the rain at times. The precipitation will gradually become more showery heading into Friday as somewhat cooler, drier, and more unstable air begins to filter in from the north. Total rainfall amounts from Wednesday night through Friday night look to range from a half inch to two inches north of Mendocino county. Lighter amounts will be found to the south, with locally a few inches possible in the mountains of interior Del Norte County. Aside from increased southerly breezes mainly across the ridges, winds will be a non- issue with this period of wet weather.

Snow levels will begin to fall below 5000 feet late Friday, and may approach 3000 feet across northern portions of our area over the weekend. One last weak system projected to pass by over the weekend may result in some snow across the higher mountain passes, but amounts at this point look fairly minor. The consensus of ensemble and deterministic models point toward a progressive ridge giving us a period of dry weather from Sunday into early next week, but the pattern continues to look modestly wet after that. /AAD

AVIATION. A period of heavier rain will bring MVFR with short periods of IFR conditions in the heavier rain. These will diminish late this evening. The southeast winds along the coast will improve conditions to MVFR or possibly better conditions along the coast. The inland valleys may see some clouds and fog return and this includes KUKI. Wednesday conditions are expected to be mainly VFR, although any south or southeast slopes that are seeing upslope flow would see lower conditions. MKK

MARINE. Winds and seas will continue to build across northwest California waters tonight. The approaching front will bring light rain and south winds as seas slowly begin to gain. Small craft advisories are in effect through Wednesday evening with wind gusts approaching 30 knots offshore. Steep seas reaching up to 15 feet are expected Thursday and Friday from the Westerly Swell. Showers are also expected late Wednesday through Thursday as winds and gusts reestablish. /EYS

BEACH HAZARDS. With the onset of 15 to 17 foot waves at periods of 15 to 17 seconds, High Surf brings a potential for hazardous conditions. West facing beaches and steep or rocky shores should be avoided or approached with extreme caution. Late Wednesday evening through Saturday could be under High Surf or Beach Hazards. Breakers in the magnitude of 22 feet could be expected Thursday through the weekend. Dominant wave periods in theses ranges can be catastrophic to beachgoers. Be aware and never turn your back to the ocean. /EYS

EKA WATCHES/WARNINGS/ADVISORIES. CA . None. NORTHWEST CALIFORNIA COASTAL WATERS . Small Craft Advisory until 9 PM PST Wednesday for PZZ470-475.



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
HBYC1 - 9418767 - North Spit, CA 5 mi63 min 53°F1019.8 hPa
46244 - Humboldt Bay, North Spit, CA 11 mi39 min 53°F9 ft
46022 - EEL RIVER - 17NM West-Southwest of Eureka, CA 21 mi39 min S 21 G 27 54°F 53°F1019.5 hPa (-0.4)52°F
46213 - Cape Mendocino, CA (094) 48 mi39 min 56°F10 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, CA12 mi46 minSSE 410.00 miOvercast53°F48°F83%1020.2 hPa
Fortuna Rohnerville Airport, CA19 mi64 minESE 1310.00 miOvercast50°F48°F94%1020 hPa

Link to 5 minute data for KACV

Wind History from ACV (wind in knots)
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Last 24hrE6SW3E6SE6E3W6E6CalmE4E5CalmCalmE3SE6SE6S3NE5CalmCalmE4E4SE6SE7SE4
1 day agoCalmCalmE4CalmCalmE3CalmCalmCalmW5W5NW3NW4NW4CalmCalmCalmCalmCalmCalmCalmE4CalmE5
2 days agoNW7N5N5N3CalmCalmN5N7N4NW7NW5NW9NW8NW5CalmCalmCalmCalmE3CalmCalmCalmE3Calm

Tide / Current Tables for Samoa, Humboldt Bay, California
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Samoa
Click for Map
Wed -- 04:37 AM PST     2.81 feet Low Tide
Wed -- 06:51 AM PST     Moonset
Wed -- 07:30 AM PST     Sunrise
Wed -- 10:50 AM PST     7.88 feet High Tide
Wed -- 04:44 PM PST     Moonrise
Wed -- 04:48 PM PST     Sunset
Wed -- 05:45 PM PST     -0.86 feet Low Tide
Wed -- 09:14 PM PST     Full Moon
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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5.85.54.63.62.92.93.44.45.66.87.67.97.46.14.32.30.5-0.6-0.8-0.212.53.95.1

Tide / Current Tables for Humboldt Bay Entrance, California
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Humboldt Bay Entrance
Click for Map
Wed -- 04:37 AM PST     2.81 feet Low Tide
Wed -- 06:52 AM PST     Moonset
Wed -- 07:30 AM PST     Sunrise
Wed -- 10:22 AM PST     6.78 feet High Tide
Wed -- 04:44 PM PST     Moonrise
Wed -- 04:49 PM PST     Sunset
Wed -- 05:45 PM PST     -0.86 feet Low Tide
Wed -- 09:14 PM PST     Full Moon
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.74.33.83.32.92.83.34.25.36.26.76.764.83.21.60.2-0.7-0.8-0.30.92.23.54.4

Weather Map
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wmap_P
GEOS Local Image of CentralWestCoast    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Eureka, CA (5,6,7,8)
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Ground Weather Radar Station Eureka, CA
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The information on this web site has not been checked for accuracy. It is for entertainment purposes only and should be independently verified before using for any other reason. There are five sources. 1) Documents and manuals from a variety of sources. These have not been checked for accuracy and in many cases have not even been read by anyone associated with L-36.com. I have no idea of they are useful or accurate, I leave that to the reader. 2) Articles others have written and submitted. If you have questions on these, please contact the author. 3) Articles that represent my personal opinions. These are intended to promote thought and for entertainment. These are not intended to be fact, they are my opinions. 4) Small programs that generate result presented on a web page. Like any computer program, these may and in some cases do have errors. Almost all of these also make simplifying assumptions so they are not totally accurate even if there are no errors. Please verify all results. 5) Weather information is from numerious of sources and is presented automatically. It is not checked for accuracy either by anyone at L-36.com or by the source which is typically the US Government. See the NOAA web site for their disclaimer. Finally, tide and current data on this site is from 2007 and 2008 data bases, which may contain even older data. Changes in harbors due to building or dredging change tides and currents and for that reason many of the locations presented are no longer supported by newer data bases. For example, there is very little tidal current data in newer data bases so current data is likely wrong to some extent. This data is NOT FOR NAVIGATION. See the XTide disclaimer for details. In addition, tide and current are influenced by storms, river flow, and other factors beyond the ability of any predictive program.