Thursday, May24, 2018 L-36.com


Marine Weather and Tides
Ferndale, 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 5:49AMSunset 8:37PM Thursday May 24, 2018 7:02 AM PDT (14:02 UTC) Moonrise 2:46PMMoonset 2:33AM Illumination 73% Phase: Waxing Gibbous; Moon at 10 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 249 Am Pdt Thu May 24 2018
Synopsis for northern california waters..Light winds will continue through Friday with periods of southerly winds in near shore areas. A long period southerly swell and a mid period westerly wave system will dominate the the sea state. Stronger north winds will develop over memorial weekend bringing large, steep seas to the coastal waters.

7 Day Forecast for Marine Location Near Ferndale, CA
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location: 40.43, -124.42     debug


Area Discussion for - Eureka, CA
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Fxus66 keka 241101
afdeka
area forecast discussion
national weather service eureka ca
401 am pdt Thu may 24 2018

Synopsis Showers will increase in coverage late this afternoon
into tonight as an upper disturbance approaches the region. In
addition, isolated thunderstorms will be possible over interior
areas this afternoon, and some of this activity may spread
westward across the coast tonight. Showers will continue during
Friday, followed by drier conditions Saturday afternoon into
Sunday. Thereafter, warm weather is expected across much of the
interior during early to middle portions of next week.

Discussion An upper-level trough was positioned offshore from
the west coast early Thursday morning. Ahead of the trough, radar
imagery showed very light shower activity beginning to spread
northward across the eka coastal waters. Short term model guidance
indicates these showers will generally remain offshore through
early afternoon. However, surface heating over trinity and
northeastern mendocino counties will aid in destabilization
sufficient for isolated shower and thunderstorm development during
the late afternoon.

Meanwhile, a stable marine boundary layer and associated stratus
will generally persist across the ocean and adjacent coast. Atop
the stable boundary layer, model guidance indicates lapse rates
will steepen above the 800 mb level tonight resulting in mucape
values increasing to 400 j kg (based on NAM forecast soundings).

This destabilization combined with a plume of strong ascent
rotating wnw around a closed upper low will aid in the development
of numerous showers and isolated thunderstorms in the vicinity of
the humboldt, del norte, and possibly mendocino coasts.

The previously mentioned upper low is forecast to move inland
across the bay area during Friday afternoon. Showers will continue
to occur to its north through Friday night, and then
dissipate exit east by Saturday afternoon. A dry subsident airmass
will subsequently spread south across the region Saturday night
and Sunday, which will favor increasing sunshine across the
interior and much warmer temperatures. Elsewhere, marine stratus
is likely over the coastal waters, with local penetration inland
yielding cooler temperatures across the del norte, humboldt, and
mendocino coast.

Aviation A deep marine layer will persist through the day,
with drizzle expected at acv and cec during the morning hours.

Periods of ifr and even periodically lifr conditions will be
possible at both acv and cec during the early morning hours, but
should lift to MVFR late in the morning. While some dissipation of
low ceilings is possible at coastal terminals by the afternoon,
it is unlikely that clouds will clear completely. Low clouds will
also penetrate far inland to smaller terminals like kneeland and
weaverville... With gradual clearing during the afternoon. Ceilings
will fluctuate between MVFR andVFR both along the coast and at
uki through the afternoon.

Showers and potentially a few thunderstorms will start to develop
inland by mid to late afternoon... But are expected to spread west
to the coast overnight. A few strikes of lightning and heavy
downbursts will be possible at both cec and acv through the night.

Brc

Marine Generally light northerly winds will persist through
the day Thursday, aside from some nearshore areas where flow
reversals will turn winds to the south. As a result, seas will
remain generally dominated by lingering northwest and southerly
swells, and mostly below 7 feet in height. A few strikes of
lightning will be possible overnight Thursday through Friday.

Friday and Saturday northerly winds will increase to between 15
to 25 kt... And will generate slightly larger and steeper seas
perhaps reaching 7 to 9 feet and within range of small craft
advisory conditions. However, a much more substantial increase in
northerly winds will begin Sunday and continue through at least
the end of the work week, with periods of gale force winds
expected Monday and beyond. This will undoubtedly result in
building steep seas, and much more hazardous conditions throughout
the waters for much of next week. Brc

Eka watches warnings advisories
Ca... None.

Northwest california coastal waters... None.

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46213 - Cape Mendocino, CA (094) 19 mi71 min 53°F7 ft
46022 - EEL RIVER - 17NM West-Southwest of Eureka, CA 21 mi53 min N 1.9 G 3.9 53°F 52°F1017 hPa53°F
HBYC1 - 9418767 - North Spit, CA 26 mi87 min SW 1 G 1.9 52°F 54°F1017 hPa
46244 - Humboldt Bay, North Spit, CA 32 mi63 min 53°F7 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, CA17 mi68 minNW 36.00 miOvercast52°F50°F94%1016.6 hPa

Wind History from FOT (wind in knots)
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Last 24hrNW4W4NW4N5CalmNW3NW8NW9NW10NW9NW8NW6NW5NW5NW5NW4W3W4W4NW3CalmCalmCalmNW3
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Tide / Current Tables for Cape Mendocino, California
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Cape Mendocino
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Thu -- 02:36 AM PDT     1.23 feet Low Tide
Thu -- 03:33 AM PDT     Moonset
Thu -- 05:53 AM PDT     Sunrise
Thu -- 08:04 AM PDT     4.27 feet High Tide
Thu -- 02:20 PM PDT     0.57 feet Low Tide
Thu -- 03:45 PM PDT     Moonrise
Thu -- 08:35 PM PDT     Sunset
Thu -- 08:49 PM PDT     5.73 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.61.81.31.31.72.43.344.34.13.52.61.710.60.71.32.33.54.75.55.75.34.5

Tide / Current Tables for Punta Gorda, California Current
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Punta Gorda
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Thu -- 03:10 AM PDT     0.00 knots Slack
Thu -- 03:32 AM PDT     Moonset
Thu -- 05:54 AM PDT     Sunrise
Thu -- 06:05 AM PDT     0.81 knots Max Flood
Thu -- 08:45 AM PDT     -0.00 knots Slack
Thu -- 11:38 AM PDT     -0.94 knots Max Ebb
Thu -- 03:12 PM PDT     0.00 knots Slack
Thu -- 03:45 PM PDT     Moonrise
Thu -- 06:22 PM PDT     1.03 knots Max Flood
Thu -- 08:34 PM PDT     Sunset
Thu -- 09:16 PM PDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.9-0.8-0.5-0.10.40.70.80.70.4-0.1-0.6-0.9-0.9-0.8-0.6-0.10.40.8110.70.2-0.5-0.9

Weather Map and Satellite Images
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wmap_P
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 (10,2,3,4)
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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.