Friday, December15, 2017 L-36.com


Marine Weather and Tides
Samoa, CA

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 7:33AMSunset 4:51PM Friday December 15, 2017 6:01 AM PST (14:01 UTC) Moonrise 5:00AMMoonset 3:35PM Illumination 8% Phase: Waning Crescent; Moon at 27 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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This is a Weather Statement Zone, please check the Date to see if it has expired
PZZ410 754 Am Pdt Thu Sep 7 2017
.a strong Thunderstorm over the waters... The areas affected include... Coastal waters from pt. St. George to cape mendocino ca out to 50... At 751 am pdt...doppler radar indicated Thunderstorms... Capable of producing local winds to around 30 knots and small hail. These storms are moving to the northwest at 25 knots. These Thunderstorms will continue through at least mid morning. 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 this storm passes. && lat...lon 4174 12417 4160 12410 4114 12416 4104 12412 4077 12423 4076 12423 4081 12418 4081 12417 4069 12422 4071 12426 4065 12431 4063 12428 4062 12426 4061 12433 4045 12441 4052 12578 4178 12499 4178 12426
PZZ400 223 Am Pst Fri Dec 15 2017
Synopsis for northern california waters..Building high pressure will bring increasing north winds today with offshore gales tonight and Saturday. Northwest swells will continue to impact the waters with large, steep waves for the weekend.

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 151209
afdeka
area forecast discussion
national weather service eureka ca
409 am pst Fri dec 15 2017

Synopsis A cold front is forecast to move south across the
region today. Very light rain will be possible with the front
over del norte county with otherwise dry conditions. Dry
conditions will return during the weekend into early next week,
followed by a chance of rain over much of northwest california
Tuesday night.

Discussion A cold front is shown on satellite off the west
coast this morning. This weak front is expected to just bring some
light rain to the higher elevations of del norte county. Colder
air and breezy north to northeast winds are expected tonight
behind the front. Tonight the winds will keep temperatures
slightly warmer in the valleys, but the ridges will be
significantly cooler than previous nights.

High pressure builds back into the area for the weekend and into
early next week. Breezy north winds continue on Saturday, but
will start to relax on Sunday. Windy locations will likely stay
quite a bit warmer overnight than the protected valleys. Some
valley fog is possible starting on Sunday and is more likely on
Monday as winds get lighter. Conditions through this period will
be similar to earlier this week.

Tuesday models are starting to come into better agreement on a
system moving into the area and bringing some rain starting
Tuesday afternoon or overnight. There are still some timing
differences, the ECMWF is around 6 hours faster bringing rain to
del norte county Tuesday afternoon. The GFS and the canadian hold
off on any rain until Tuesday evening. The latter looks like the
more likely solution due to the magnitude of the ridge this system
is plowing into. Rainfall amounts look modest with amounts
ranging from up to an inch in the hills of humboldt and del norte
counties to only a few hundredths in eastern trinity and southern
mendocino counties. Snow levels look to be over 5,000 feet for the
heavier precip, but look fall quickly behind the front as the
upper level trough moves onshore. This is based on the current
model runs and they have been fairly consistent for the past
several runs. However, due to the fact that there is a strong
ridge in place that system will have to break down confidence is
lower than normal. This system may end up being weaker than
currently forecast. Mkk

Aviation A weak frontal boundary will bring increasing
mid upper cloud cover to northwest california airfields today.

There is a chance for some very light rain but primarily to the
north at kcec. Ceilings should scatter out behind the front
tonight with mostlyVFR conditions expected. Although some pockets
lower ceilings may develop along the coast tonight bringing MVFR
possible ifr. Otherwise expectedVFR to prevail. Some llws will
be possible this evening as a weak cold front passes, particularly
at uki. Kml brc

Marine Ridging offshore will bring increasing north winds today
with gales across the outer waters tonight through Saturday. As a
result, the gale watch was upgraded to a warning for the southern
and northern outer waters. Small craft advisories were also hoisted
for the inner waters later this afternoon through Saturday.

Northwest swells will continue to impact the waters through the
weekend with steep waves building in response the gales. Winds and
seas will begin to settle on Sunday into early next week as the
pressure gradient relaxes across the coastal waters. Kml

Fire weather Locally strong northeasterly offshore winds are
forecast to develop across area ridges late tonight into
Saturday. Dead fuel moisture values have become critically dry
across portions of northwest california due to very little
precipitation during december. However, greening of live
vegetation is expected to preclude a more significant fire weather
threat during Saturday. Breezy northeast wind and low rh will
continue Saturday night. Current model runs show stronger winds
south and east of mendocino county. Strong winds are also expected
along the coast and over the near coastal ridges.

Eka watches warnings advisories
Ca... None.

Northwest california coastal waters...

small craft advisory from 2 pm this afternoon to 3 am pst
Sunday for pzz450-455.

Small craft advisory from 2 pm this afternoon to 9 pm pst this
evening for pzz470.

Gale warning from 9 pm this evening to 3 am pst Sunday for
pzz470.

Small craft advisory until 9 pm pst this evening for pzz475.

Gale warning from 9 pm this evening to 9 am pst Sunday for
pzz475.

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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 mi85 min ESE 4.1 G 5.1 47°F 51°F1023.5 hPa
46244 - Humboldt Bay, North Spit, CA 11 mi31 min 55°F8 ft
46022 - EEL RIVER - 17NM West-Southwest of Eureka, CA 19 mi71 min N 12 G 16 54°F 55°F8 ft1022.6 hPa (+0.3)49°F
46213 - Cape Mendocino, CA (094) 46 mi39 min 54°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 mi68 minE 47.00 miPartly Cloudy44°F42°F93%1023.2 hPa
Fortuna Rohnerville Airport, CA18 mi66 minSSE 30.50 miMostly Cloudy41°F41°F100%1023 hPa

Wind History from ACV (wind in knots)
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Last 24hrE3SE4CalmCalmW3W4NW5W4NW8S4CalmCalmNE3E5CalmCalmE5E4CalmSE5CalmCalmE4E6
1 day agoE3E5E3CalmW3NW3CalmW4NW3NW5E3CalmE3CalmE3CalmE3E3CalmE6CalmE5CalmE3
2 days agoE6E5E5CalmNW6NW6NW3W5CalmNW3CalmE4CalmCalmE4NE3CalmE4E3E4CalmE4E3E4

Tide / Current Tables for Eureka, Humboldt Bay, California
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Eureka
Click for Map
Fri -- 03:19 AM PST     2.76 feet Low Tide
Fri -- 05:00 AM PST     Moonrise
Fri -- 07:34 AM PST     Sunrise
Fri -- 09:50 AM PST     7.87 feet High Tide
Fri -- 03:35 PM PST     Moonset
Fri -- 04:31 PM PST     0.02 feet Low Tide
Fri -- 04:49 PM PST     Sunset
Fri -- 11:21 PM PST     5.75 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
54.23.32.82.93.54.55.76.87.67.97.46.24.52.610.10.10.71.83.14.35.35.7

Tide / Current Tables for Fields Landing, Humboldt Bay, California
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Fields Landing
Click for Map
Fri -- 03:11 AM PST     2.65 feet Low Tide
Fri -- 05:00 AM PST     Moonrise
Fri -- 07:34 AM PST     Sunrise
Fri -- 09:23 AM PST     7.35 feet High Tide
Fri -- 03:35 PM PST     Moonset
Fri -- 04:22 PM PST     0.02 feet Low Tide
Fri -- 04:50 PM PST     Sunset
Fri -- 10:54 PM PST     5.37 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.53.732.72.83.64.65.76.77.37.26.55.33.720.70.10.20.923.34.45.25.4

Weather Map and Satellite Images
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Weather Map
wmap_P
IR Satellite Image from GEOS
west_satellite

GOES Local Image of CentralWestCoast    EDIT
Geos

Wind Forecast for Eureka, CA (9,2,3,4)
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Ground Weather Radar Station Eureka, CA
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weather_mapweather_map weather_map

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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.