Friday, March22, 2019 L-36.com


Marine Weather and Tides
Samoa, CA

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 7:15AMSunset 7:31PM Friday March 22, 2019 5:35 PM PDT (00:35 UTC) Moonrise 8:45PMMoonset 7:36AM Illumination 96% Phase: Waning Gibbous; Moon at 17 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 227 pm pst Fri feb 15 2019 a marine weather statement has been issued for the following areas... Waters from pt. St. George to cape mendocino ca out 60 nm... Humboldt bay bar... At 222 pm pst, doppler radar indicated lines of showers and isolated Thunderstorms over the waters north of cape mendocino, capable of producing winds to around 30 knots and small hail. This activity was moving east-northeast at 30 knots. Precautionary/preparedness actions... Water spouts are possible along with stronger Thunderstorms... Locally higher waves...and lightning strikes. Boaters should seek safe harbor immediately until these storms pass. && lat...lon 4174 12417 4154 12405 4153 12405 4154 12408 4124 12410 4114 12416 4089 12413 4084 12418 4086 12410 4082 12410 4065 12431 4060 12418 4062 12424 4063 12432 4045 12440 4047 12579 4129 12555 4168 12568 4178 12579
PZZ400 259 Pm Pdt Fri Mar 22 2019
Synopsis for northern california waters..Southerly winds will continue to ease this afternoon and remain light for the bulk of the weekend, while seas remain elevated. Another cold front will pass through on Monday.


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 222234
afdeka
area forecast discussion
national weather service eureka ca
334 pm pdt Fri mar 22 2019

Synopsis Rain will return to the area today, with a generally wet
pattern continuing through at least the middle of next week. A
few thunderstorms will be possible across the area on Saturday and
again on Monday.

Discussion A cold front is moving across the area this
afternoon. Radar and satellite are showing the back edge is fairly
close to the coast, but confidence is low on exactly how quickly
things will clear out. There is expected to be a brief break
in the rain before the showers start to move onshore. These are
in association with the upper level trough. A shortwave moving
around the trough upper level trough is expected to bring an
increase in showers late tonight into Saturday morning. This will
also bring some instability. There is a slight chance for
thunderstorms in the morning along the coast and moving inland in
the afternoon. Instability is not particularly strong, but it
could be enough for a few thunderstorms north of CAPE mendocino.

The coast will see the highest chance early in the morning and
this will move inland in the afternoon. Skies may be partly
cloudy, but a quick shower could move through bringing brief heavy
rain. Some small hail is possible with these showers, but it is
not expected to be cold enough for widespread accumulations on the
roadways. Snow levels will drop to around 3,500 feet in the
heavier showers.

These showers will diminish late Saturday afternoon as high
pressure starts to build into the area. Saturday night will be the
coldest night and frost is expected in the interior valleys. The
challenge will be which areas see fog that will keep them from
seeing frost. Sunday is expected to be a dry day, but high
clouds will start to move across the area.

The next system is expected to move into the area Sunday night
into Monday morning. This is expected to bring a quick shot of
moderate rain. Rainfall amounts are expected to be around an inch
with local amounts up to 2 inches in the higher terrain. Monday
morning showers will move in behind this system. Currently it
looks like there will be enough instability to produce some
thunderstorms over the area. Confidence is low on this now, but
have a slight chance for thunder in the forecast. Monday afternoon
showers are expected to diminish. Snow levels are expected to
remain mainly above 4,000 feet.

Tuesday there will likely be a break in the rain at least in the
morning, but confidence is low on how long this break will be. It
is expected to be too shortlived to allow temperatures to get cool
enough for frost. Tuesday night and Wednesday another fairly
wet system is expected. Again it looks wet, but flooding is not
expected at this time. Thursday showers are expected to continue,
but snow levels may be slightly lower. Mkk

Aviation Mostly MVFR toVFR conditions, with intermittent drops
to ifr have been observed all morning. Expect this trend to continue
through this afternoon as the frontal system pushes farther
eastward. Possible breaks in cloud cover will be possible this
evening, but shortlived. An upper-level trough and lingering low-
level moisture will likely result in MVFR ceilings late this evening
and tonight. Scattered showers will be also be possible during this
timeframe, but the threat for showers should taper off early
tomorrow morning. Otherwise, low-level wind shear and gusty winds
will continue along the coast through early this afternoon.

Marine steep waves of 7 to 10 ft will slowly decay this
afternoon while this west-northwest swell continues to build,
resulting in combined seas holding around 12 to 14 ft across most of
the coastal waters tonight and through tomorrow night. Winds will
ease abruptly later this afternoon in the wake of the front and tend
more westerly, and will remain relatively light into Sunday. There
may be a brief period of below small craft advisory conditions on
Sunday before the next storm system approaches Sunday night and
Monday, bringing more southerlies and short-period seas.

Aad tdj

Eka watches warnings advisories
Ca... None.

Northwest california coastal waters...

small craft advisory until 3 am pdt Sunday for pzz450-455-470-
475.

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
HBYC1 - 9418767 - North Spit, CA 3 mi59 min SW 12 G 16 54°F 52°F1017.9 hPa
46244 - Humboldt Bay, North Spit, CA 11 mi35 min 52°F9 ft
46022 - EEL RIVER - 17NM West-Southwest of Eureka, CA 19 mi35 min SW 5.8 G 9.7 1018.8 hPa (+1.1)
46213 - Cape Mendocino, CA (094) 46 mi35 min 53°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, CA13 mi42 minSW 89.00 miMostly Cloudy56°F54°F93%1018.4 hPa
Fortuna Rohnerville Airport, CA18 mi60 minESE 910.00 miMostly Cloudy52°F51°F100%1017.9 hPa

Wind History from ACV (wind in knots)
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Last 24hrW4SW4SE3E4CalmCalmE4SE5SE3E4S8SE4SE13
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1 day agoS11
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S5S9S8SE5CalmE3E5E4CalmCalmE3E6E3E4CalmCalmSW4W7W6W6W8W5W6
2 days agoNW5CalmCalmE3E3CalmCalmCalmSE6E4CalmNE5S4S7N3CalmNE5NE3S3S3N3CalmS20
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Tide / Current Tables for Eureka, Humboldt Bay, California
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Eureka
Click for Map
Fri -- 01:52 AM PDT     7.75 feet High Tide
Fri -- 07:16 AM PDT     Sunrise
Fri -- 07:56 AM PDT     -0.06 feet Low Tide
Fri -- 08:35 AM PDT     Moonset
Fri -- 02:16 PM PDT     7.44 feet High Tide
Fri -- 07:30 PM PDT     Sunset
Fri -- 08:12 PM PDT     0.39 feet Low Tide
Fri -- 09:45 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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6.17.47.77.15.63.81.90.5-0.10.623.65.36.77.47.26.14.52.71.20.40.723.6

Tide / Current Tables for Fields Landing, Humboldt Bay, California
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Fields Landing
Click for Map
Fri -- 01:34 AM PDT     7.30 feet High Tide
Fri -- 07:17 AM PDT     Sunrise
Fri -- 07:46 AM PDT     0.24 feet Low Tide
Fri -- 08:35 AM PDT     Moonset
Fri -- 01:52 PM PDT     6.91 feet High Tide
Fri -- 07:31 PM PDT     Sunset
Fri -- 07:59 PM PDT     0.38 feet Low Tide
Fri -- 09:45 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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6.27.17.26.453.21.60.50.30.92.345.56.66.96.45.23.620.80.40.82.13.8

Weather Map and Satellite Images
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GOES 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.
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Wind Forecast for Eureka, CA (20,4,5,8)
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Ground Weather Radar Station Eureka, CA
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Disclaimer:
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.