Monday, May21, 2018 L-36.com


Marine Weather and Tides
Fields Landing, CA

Version 3.4
What's New / NOTES
5/20/2018 -- NOAA is having problems with the data feed that I use to draw the graphs. They are aware of the issue and working to resolve it. Sometimes changing the location by about a mile will give a correct graph. 3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.

Sunrise 5:51AMSunset 8:35PM Monday May 21, 2018 7:06 PM PDT (02:06 UTC) Moonrise 11:26AMMoonset 12:48AM Illumination 47% Phase: First Quarter Moon; Moon at 7 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 730 pm pdt Tue mar 13 2018 a marine weather statement has been issued for the following areas... Coastal waters from pt. St. George to cape mendocino ca out 10 nm... Humboldt bay bar... At 729 pm pdt, doppler radar indicated a shower, capable of producing winds to around 30 knots. This shower was located 9 nm north of cape mendocino, moving northeast at 20 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. 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 4080 12411 4080 12418 4075 12419 4073 12423 4070 12421 4068 12422 4070 12427 4071 12427 4065 12431 4063 12429 4063 12424 4062 12426 4063 12432 4047 12439 4057 12459 4095 12437 4086 12417 4076 12423 4085 12416 4082 12409 PZZ400 511 Pm Pdt Mon May 21 2018
Synopsis for northern california waters..Strong north winds and steep seas will gradually settle through Tuesday. Light to moderate winds will persist through the work week with a mixed sea state. Northerly winds will establish once again over memorial weekend.

7 Day Forecast for Marine Location Near Fields Landing, CA
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location: 40.77, -124.25     debug


Area Discussion for - Eureka, CA
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Fxus66 keka 212121
afdeka
area forecast discussion
national weather service eureka ca
221 pm pdt Mon may 21 2018

Synopsis Mild weather conditions will persist over the next
several days with a slight chance for afternoon thunderstorms
across interior mountains and stratus near the coast. Building
high pressure will bring warmer and drier weather for memorial
weekend.

Discussion Weak ridging will move over northern california
early this week as a closed low across the southwest lifts
northward. This helped to clear out cloud cover across most of the
region and increase inland temperatures by 5 to 10 degrees this
afternoon.

500 mb heights will begin to fall on Tuesday as another
upper trough dives down from the gulf of alaska and becomes a closed
low pressure system off of the california coast by Wednesday
afternoon. This will draw in low to mid level moisture across
northwest california which will bring a slight chance for
thunderstorms primarily across the mountainous interior. By Thursday
and Friday, the closed low will track over central california. This
pattern tends to be most favorable for thunderstorm development, and
with east southeasterly flow, showers and thunderstorms will be able
to track towards coastal areas of northwest california. Pops were
increased for Thursday but withheld from expanding slight chance for
storms near the coast at this time. Chances for inland showers will
diminish into the holiday weekend as high pressure sets up along the
west coast and brings warmer and drier air to the region.

Stratus will continue to impact much of the coast and interior
valleys through much of the week with weaker winds forecast across
the coastal waters and high humidity across most of the region.

Inland areas will more readily clear out with afternoon mixing but
clouds will linger along the coast. Pockets of the coast should
still see some peaks of blue skies in the afternoons.

Looking specifically at memorial weekend, showers and thunderstorms
will be the main impact on Friday and Saturday. However, building
high pressure will bring drier conditions with inland temperatures
increasing to the 70s and 80s late in the weekend. Kml

Aviation The marine layer remained persistent but sort of
fragmented along the coast north of CAPE mendocino this morning.

However, the marine layer did push well into interior valleys.

Most low clouds areas busted up around noonday, nevertheless a
large swathe remained over humboldt county: ranges north of
petrolia-weott-bridgeville-eel delta-just west of willow creek and
then primarily north near trinidad. Previous discussion portions:
the daytime mixing and drying for sites at the coast will be
fighting against a moist onshore flow which will likely lead to
more cloud generation this afternoon. Thus, expect MVFR ceilings
to quickly spread back over the coastal plain and terminals by
this evening. There is a potential for ceilings dropping below
1000 feet as we head into the early morning hours of
Tuesday... (added) and model guidance certainly supports this
scenario. Ta

Marine An ascat pass this afternoon observed strong to near gale
force winds primarily across the outer waters today with buoys
reporting steep seas around 6 to 9 feet. Northerlies will decrease
through tonight as the pressure gradient relaxes then light to
moderate winds will persist through most of the week. Short period
seas will steadily subside through Tuesday with a mixed sea state
around 6 to 8 feet expected through the work week. Seas should be
relatively low through memorial weekend but moderate north winds
will develop late in the weekend with 20 kt gusts possible primarily
south of CAPE mendocino. Please stay tuned for possible changes
in the extended forecast. Kml

Eka watches warnings advisories
Ca... None.

Northwest california coastal waters... Small craft advisory until 5 pm pdt Tuesday 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 2 mi90 min N 8.9 G 11 53°F 51°F1015.1 hPa
46244 - Humboldt Bay, North Spit, CA 10 mi36 min 51°F6 ft
46022 - EEL RIVER - 17NM West-Southwest of Eureka, CA 15 mi56 min N 12 G 16 53°F 1014.9 hPa52°F
46213 - Cape Mendocino, CA (094) 42 mi44 min 54°F6 ft

Wind History for North Spit, Humboldt Bay, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Fortuna Rohnerville Airport, CA16 mi71 minNW 910.00 miOvercast54°F50°F88%1014.6 hPa
Arcata / Eureka, Arcata Airport, CA17 mi73 minNNW 1310.00 miFair59°F50°F72%1014.5 hPa

Wind History from FOT (wind in knots)
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Last 24hrN10NW12
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1 day agoNW6NW6NW8NW6NW5NW7NW8N6NW6NW8NW8NW8NW8N8N8N9N10
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2 days agoNW8NW7NW6NW6N3CalmCalmNW3NW3NW5NW4NW3NW4NW4NW8NW9NW8N6NW7NW9NW10NW9NW11NW8

Tide / Current Tables for Humboldt Bay Entrance, California
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Humboldt Bay Entrance
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Mon -- 01:47 AM PDT     Moonset
Mon -- 04:36 AM PDT     5.89 feet High Tide
Mon -- 05:54 AM PDT     Sunrise
Mon -- 11:59 AM PDT     -0.44 feet Low Tide
Mon -- 12:25 PM PDT     Moonrise
Mon -- 06:49 PM PDT     5.43 feet High Tide
Mon -- 08:33 PM PDT     Sunset
Mon -- 08:50 PM PDT     First Quarter
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.33.94.65.35.85.95.44.63.320.7-0.1-0.4-0.10.92.13.54.65.35.45.24.643.4

Tide / Current Tables for Hookton Slough, Humboldt Bay, California
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Hookton Slough
Click for Map
Mon -- 01:47 AM PDT     Moonset
Mon -- 05:00 AM PDT     6.39 feet High Tide
Mon -- 05:54 AM PDT     Sunrise
Mon -- 12:17 PM PDT     -0.44 feet Low Tide
Mon -- 12:25 PM PDT     Moonrise
Mon -- 07:13 PM PDT     5.93 feet High Tide
Mon -- 08:32 PM PDT     Sunset
Mon -- 08:50 PM PDT     First Quarter
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.23.74.65.46.16.46.15.44.12.71.20.1-0.4-0.20.61.93.34.65.55.95.85.24.43.7

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 (22,6,7,8)
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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.