Sunday, April22, 2018 L-36.com


Marine Weather and Tides
Manchester, CA

Version 3.4
What's New / NOTES
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.
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.

Sunrise 6:23AMSunset 7:59PM Sunday April 22, 2018 11:18 AM PDT (18:18 UTC) Moonrise 11:21AMMoonset 1:08AM Illumination 49% 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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PZZ540 Point Arena To Point Reyes To 10 Nm- 812 Am Pdt Sun Apr 22 2018
.small craft advisory in effect through this evening...
Today..NW winds 15 to 25 kt. Wind waves 4 to 6 ft. NW swell 6 ft at 14 seconds. Patchy fog in the morning.
Tonight..NW winds 15 to 25 kt decreasing to 10 to 20 kt overnight. Wind waves 3 to 5 ft. NW swell 5 to 6 ft at 13 seconds.
Mon..NW winds 5 to 15 kt. Wind waves 1 to 3 ft. NW swell 6 ft at 13 seconds.
Mon night..NW winds 5 to 15 kt. Wind waves 1 to 3 ft. NW swell 4 to 5 ft at 18 seconds.
Tue..NW winds 5 to 15 kt. Wind waves 1 to 3 ft. W swell 5 to 7 ft at 17 seconds.
Wed..W winds 10 kt. Wind waves 2 ft or less. W swell 5 to 7 ft.
Thu..W winds 5 to 15 kt. Wind waves 1 to 3 ft. NW swell 3 to 5 ft and S 3 ft.
PZZ500 812 Am Pdt Sun Apr 22 2018
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Moderate to locally gusty northwest winds will continue today across the waters as high pressure sits over the eastern pacific. Brisk winds will likely continue to generate steep wind waves and fresh swell resulting in choppy seas through the rest of today. Winds will gradually diminish tonight into tomorrow.

7 Day Forecast for Marine Location Near Manchester, CA
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location: 38.95, -123.73     debug


Area Discussion for - Eureka, CA
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Fxus66 keka 221200
afdeka
area forecast discussion
national weather service eureka ca
500 am pdt Sun apr 22 2018

Synopsis High pressure will bring mainly clear skies and dry
conditions into early next week. High temperatures will be above
normal in the inland areas. Mid to late week an upper level low
approaching the area will bring cooler temperatures and the chance
for showers.

Discussion A shortwave approaching the region is the main
weather feature this morning. It will pass through the area early
this morning. High pressure builds in quickly behind it which will
bring breezy north winds and slight cooler temperatures in the
inland areas. Tonight frost is possible in the coldest interior
valleys of trinity, but is not looking very likely. Will hold off
on issuing any advisories. Some stratus is possible along the
coast, but it is expected to be fairly minimal.

Monday high pressure is in place the area. This will bring highs
to the inland areas in the 80s. Any lingering stratus should clear
quickly in the morning and dry conditions are expected across the
area. Frost is not expected Monday night into Tuesday as
temperatures continue to warm. Tuesday the high pressure starts to
move off to the east as an upper level low starts to approach the
area. Dry weather is expected to continue, but stratus may return
along the coast. This will keep temperatures along the coast a
few degrees cooler. Inland temperatures are expected to be similar
to Monday.

Wednesday the upper level continues to move towards the coast. The
ecmwf is slower with the progression of this than the gfs. The
ecmwf solution would keep temperatures on Wednesday nearly as warm
as Tuesday and the area would stay dry, while the GFS starts the
cooling trend and brings some showers to the area. Generally took
a blend of the solutions, but would favor the slower ecmwf
solution as models often try to move a closed low like this
through too quickly.

Thursday and Friday there is general model agreement that the low
will stall just offshore. This would bring temperatures back to
near or below seasonal normals and some light rain showers are
possible. Coastal stratus is likely as well. Saturday there is
some general agreement that an upstream system will start to push
it out of the area, but the exact direction remains in question.

Current model runs have some showers over the area on Saturday.

Thunderstorms are possible as this upper level low moves overhead,
but due to the uncertainty in the timing and track of this low
have not added them to the forecast yet. Overall there is lower
than normal confidence in this pattern. Mkk

Aviation Patches of low clouds and even some fog have formed
along portions of the redwood coast early this morning. The extent
of this cloudiness is hard to ascertain due to high clouds which
continue to obscure the lower clouds on satellite imagery. Clouds
are expected thin later this morning, and daytime heating should
erode this cloudiness from the mainland edge as N low-level flow
chips away at the marine side. Gusty NW to N winds are expected once
again late this morning and this afternoon along the redwood coast.

Lighter winds are expected at kuki withVFR conditions. Increasing
offshore flow should keep clouds and or fog away from kcec tonight,
particularly after midnight. Sec

Marine N winds have nearly reached their expected maximum over
the outer waters early this morning. Have continued the gale warning
for the outer waters. Have hoisted a hazardous seas warning for the
inner waters as seas at the buoys there have ramped up to 12 feet or
a bit more.

Winds are expected to remain quite strong through the evening hours
before gradually dropping below gale warning criteria. Conditions
will continue a gradual improving trend through mid-week with winds
shifting to light southerly by week's end. NW swell trains will
continue to traverse the area through the period. Sec

Eka watches warnings advisories
Ca... None.

Northwest california coastal waters...

small craft advisory until midnight pdt tonight for pzz450-455.

Hazardous seas warning until midnight pdt tonight for pzz450-455.

Gale warning until midnight pdt tonight for pzz470-475.

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ANVC1 - 9416841 - Arena Cove, CA 3 mi49 min NW 6 G 12 54°F 49°F1018.1 hPa
46014 - PT ARENA - 19NM North of Point Arena, CA 24 mi39 min NNW 21 G 25 1018.2 hPa

Wind History for Arena Cove, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Ukiah Municipal Airport, CA31 mi23 minN 010.00 miFair67°F41°F39%1016 hPa

Wind History from UKI (wind in knots)
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Last 24hrN4Calm3CalmN9NW7NW9NW5N7N7CalmS3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmNW3NW5
1 day agoCalmCalm3NW105W10NW104N10N8NE6CalmCalmCalmCalmCalmCalmW3CalmCalmCalmCalmCalmCalm
2 days agoCalmNW7NW9
G15
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G16
N6CalmCalmCalmCalmCalmSE3CalmCalmCalmCalmN3CalmCalmNW3Calm

Tide / Current Tables for Point Arena, California
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Point Arena
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Sun -- 02:07 AM PDT     Moonset
Sun -- 04:12 AM PDT     5.28 feet High Tide
Sun -- 06:28 AM PDT     Sunrise
Sun -- 11:36 AM PDT     -0.53 feet Low Tide
Sun -- 12:21 PM PDT     Moonrise
Sun -- 02:46 PM PDT     First Quarter
Sun -- 06:44 PM PDT     4.23 feet High Tide
Sun -- 07:59 PM PDT     Sunset
Sun -- 11:41 PM PDT     2.52 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
33.74.455.35.14.53.52.31.10.1-0.4-0.5-0.10.81.82.83.64.14.243.532.6

Tide / Current Tables for Point Arena, California Current
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Point Arena
Click for Map
Sun -- 02:07 AM PDT     Moonset
Sun -- 02:32 AM PDT     0.54 knots Max Flood
Sun -- 05:13 AM PDT     -0.00 knots Slack
Sun -- 06:28 AM PDT     Sunrise
Sun -- 08:40 AM PDT     -1.21 knots Max Ebb
Sun -- 12:21 PM PDT     Moonrise
Sun -- 12:47 PM PDT     0.00 knots Slack
Sun -- 02:46 PM PDT     First Quarter
Sun -- 03:59 PM PDT     0.96 knots Max Flood
Sun -- 07:26 PM PDT     -0.00 knots Slack
Sun -- 07:59 PM PDT     Sunset
Sun -- 09:38 PM PDT     -0.58 knots Max Ebb
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
00.30.50.50.40.1-0.3-0.8-1.1-1.2-1-0.7-0.40.10.60.910.90.60.2-0.3-0.5-0.6-0.5

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 (14,3,4,5)
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Ground Weather Radar Station Sacramento, 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.