Thursday, May24, 2018 L-36.com


Marine Weather and Tides
Scotia, 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 4:34 PM PDT (23:34 UTC) Moonrise 2:45PMMoonset 2:33AM Illumination 76% 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 233 Pm Pdt Thu May 24 2018
Synopsis for northern california waters..Gusty north winds will develop across the outer waters on Friday. A long period southerly swell and a mid period westerly wave system will dominate the the sea state with choppy wind waves for Friday afternoon. Stronger north winds will develop over memorial weekend bringing large, steep seas to the coastal waters.

7 Day Forecast for Marine Location Near Scotia, CA
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location: 40.25, -124.37     debug


Area Discussion for - Eureka, CA
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Fxus66 keka 242150
afdeka
area forecast discussion
national weather service eureka ca
250 pm pdt Thu may 24 2018

Synopsis Light showers with a possible embedded thunderstorm will
be possible across most of northwest california this evening
through Friday. Building high pressure will then bring warmer and
drier weather conditions through memorial day weekend.

Discussion Showers and potential embedded thunderstorms will still
be possible across northwest california this evening through Friday
as the upper low pressure system offshore begins to track over
central california. The primary areas that area expected to see
storm development are the typical regions across trinity and
northeast mendocino counties. However, east southeast steering flow
will help potential storms propagate near coastal del norte,
humboldt, and possibly coastal mendocino tonight. Moving into the
holiday weekend building high pressure will usher in a dry,
subsident airmass that will bring a cease to thunderstorm chances
and cause daytime temperatures to gradually increase through
memorial day weekend. One change to the forecast was to increase
inland temperatures by a few degrees. Model guidance suggests that
interior locations, such as ukiah, can reach the upper 80s on
Sunday and the low 90s on memorial day and Tuesday. Coastal areas
should remain more seasonable in the upper 50s and low 60s.

Another adjustment to the forecast was to decrease cloud coverage
along the coast over the weekend. A thermal trough, generated from
the hot interior temperatures, will shift west along the coast
which will enhance easterly winds Sunday and Monday. Although low
clouds are still expected to develop along the coast, this dry
east flow should inhibit widespread development and restrict the
intrusion of the marine layer across interior valleys. Plus robust
north winds over the coastal waters should help promote
scattering coastal clouds in the afternoon on Sunday and Monday.

However, the tradeoff will for any blue skies will be breezy winds
on the coast. Kml

Aviation The marine layer was quite a hodgepodge of layers
through the afternoon... And was frequently masked by even higher
ifr-MVFR cigs. It almost seemed as though the layers were in "hide
and seek" mode today. Portions of the entrenched stratus showed
brighter tops and some cu-like enhancement with a higher layer
quite visible, possibly a tell-tale sigh for partial clearing.

Then there were some , but overall the low cloud deck remained
fairly solid. Around noon, an even lower layer infiltrated the acv
and cec terminals. Acv reported bkn002 3 4sm br. Expect mostly
MVFR late afternoon early evening, but ifr conditions will remain
a concern for coastal sites. Inland: low clouds spread deep
inland, but mostly dissipated before midday. Uki reported MVFR
cigs through the morning. Convection over the mountain interior
were slow to jump start today compared to the previous 2 days.

Therefore, have reservation that any showers will reach coastal
areas in the late afternoon early evening.

Marine A weak system will cause north winds to increase slightly
on Friday which will causes 20-25 kt wind gusts across the coastal
waters. Although marginal, a very marginal small craft advisory was
hoisted for the outer waters for Friday. Other than some choppy wind
waves, a longer period south swell and a northwesterly swell will
dominate the sea state on Friday. Winds will increase more
significantly late Saturday afternoon as building high pressure
offshore causes the pressure gradient to flex. This will result in
robust northerly winds starting Sunday through most of next week.

Very steep seas will build in response to the robust winds over
memorial day weekend and continue through much of next week. Kml

Eka watches warnings advisories
Ca... None.

Northwest california coastal waters... Small craft advisory from 9
am to 9 pm pdt Friday for pzz470-475.

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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 mi42 min 55°F6 ft
46022 - EEL RIVER - 17NM West-Southwest of Eureka, CA 34 mi34 min NNW 3.9 G 5.8 55°F 53°F1018.9 hPa (-0.3)55°F
HBYC1 - 9418767 - North Spit, CA 37 mi58 min NW 4.1 G 4.1 55°F 55°F1018.8 hPa
46244 - Humboldt Bay, North Spit, CA 45 mi34 min 55°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, CA24 mi59 minNNW 610.00 miOvercast57°F50°F77%1018.3 hPa

Wind History from FOT (wind in knots)
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Last 24hrNW8NW6NW5NW5NW5NW4W3W4W4NW3CalmCalmCalmNW3CalmCalmNW3NW3NW6NW9NW7NW7NW6NW7
1 day agoNW10
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NW6NW4W6NW4W3NW4W4NW4NW4W5W3NW3NW3NW4W4NW4N5CalmNW3NW8NW9NW10NW9
2 days agoNW11
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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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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 (19,4,5,8)
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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.