Tuesday, October23, 2018 L-36.com


Marine Weather and Tides
Boonville, CA

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 7:30AMSunset 6:23PM Tuesday October 23, 2018 9:58 AM PDT (16:58 UTC) Moonrise 5:22PMMoonset 5:18AM Illumination 99% Phase: Full Moon; Moon at 14 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- 902 Am Pdt Tue Oct 23 2018
Today..N winds 5 to 10 kt...becoming W this afternoon. Wind waves 2 ft or less. NW swell 3 to 4 ft at 11 seconds and sw 2 to 3 ft at 17 seconds.
Tonight..NW winds 5 to 15 kt. Wind waves 2 ft or less. NW swell 3 to 4 ft at 12 seconds and sw 2 to 3 ft at 16 seconds.
Wed..NW winds 5 to 15 kt. Wind waves 3 to 4 ft. W swell 4 to 6 ft at 11 seconds and sw 2 to 3 ft at 16 seconds.
Wed night..NW winds 10 to 20 kt with gusts up to 25 kt. Wind waves 3 to 4 ft. W swell 5 to 7 ft at 13 seconds and sw 2 to 3 ft at 16 seconds.
Thu..NW winds 5 to 15 kt. Wind waves 3 to 4 ft. W swell 5 to 7 ft at 13 seconds and sw 2 to 3 ft at 15 seconds.
Thu night..NW winds 5 to 15 kt. Wind waves 3 to 4 ft. W swell 7 to 9 ft at 13 seconds and sw 2 to 3 ft at 15 seconds.
Fri..NW winds 5 to 15 kt. Wind waves 3 to 4 ft. W swell 6 to 9 ft and sw around 2 ft.
Sat..NW winds 5 to 10 kt. Wind waves 2 ft or less. W swell 5 to 7 ft and sw 2 to 3 ft.
PZZ500 902 Am Pdt Tue Oct 23 2018
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Generally light winds will continue through much of the week as high pressure builds. Expect locally gusty northwest winds along the big sur coast through Wednesday evening. Mixed moderate period northwest swell and a longer period southerly swell will continue through the forecast period.


7 Day Forecast for Marine Location Near Boonville, CA
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location: 38.89, -123.38     debug


Area Discussion for - Eureka, CA
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Fxus66 keka 231118
afdeka
area forecast discussion
national weather service eureka ca
418 am pdt Tue oct 23 2018

Synopsis A weak front will bring a chance of light rain this
afternoon. Otherwise, dry weather and mild daytime temperatures
are expected through the week.

Discussion Low cloud cover pushed well inland overnight. The
top of the marine layer was around 3000 feet as of 3am and still
climbing. High clouds in advance of a weak front will also spread
across the area this morning. The incoming weak front will mix
out the marine layer and result in warmer temperatures for coastal
areas this afternoon. Coastal sites may actually reach 60f.

Interior temperatures will continue on a downward trend today,
though still remain quite pleasant with readings in the lower to
mid 70s in the warmest valleys.

The incoming front will probably generate some light rain (a few
hundredths of an inch) this afternoon for portions of del norte
and northern humboldt counties as a mid level shortwave trough
transitions across the pacific nw. Though the timing has remained
consistent, every model has bounced around with how much rain.

The GFS and ECMWF are now much wetter than the NAM and high
resolution models. In fact, the latest hrrr has virtually nothing
across most of the area today. The best chances for light rain
continues to be in del norte and northern humbodlt counties.

Additional rain chances are not looking very promising for the
remainder of the week for NW california. A broad flat ridge will
build across the NE pacific and into the golden state Wednesday
through Friday while a deep trough develops over the gulf of
alaska. A couple of perturbations in the moist westerly flow aloft
between these to pressure systems will head into washington and
oregon. Del norte county will be on the far southern edge of
moisture. For now will keep a slight chance of light rain in
the forecast for Thu or Thu night, though the models continue to
trend drier with each new run with fairly high 500mb heights.

There will probably still be a fair amount of mid and high clouds
which may serve to hold daytime temperatures down.

A shortwave trough from the gulf of alaska is forecast to
approach Sunday into Monday. This shortwave may bring some light
rain to the northern portion of the forecast area Sunday through
Monday. A longwave ridge continues to dominate through early next
week and this shortwave will likely dampen out considerably. Thus,
expect dry weather to predominate for the next 7 days.

Aviation Stratus has pushed well inland as the marine layer has
deepened to around 3000 ft ahead of an approaching frontal system.

This deepening, along with increased e-se low-level flow, has
allowed ceiling heights to rise to nearly 2000 ft along the redwood
coast. Stratus has also increased across much of mendocino county,
reaching kuki a few hours ago. Ceiling heights there are running
lower, just below 1000 ft. High clouds are also noted spreading over
the top of the stratus. These clouds will be lowering through the
day as the front approaches. A few patches of rain may develop a bit
later this morning, with better chances of rain during the afternoon
along the redwood coast. Amounts will be light, and, as a result,
visibility reductions should be minimal. Winds will be light out of
the s, becoming variable tonight. Sec

Marine S winds will peak at 15 to 20 kt later this morning over
the outer waters N of CAPE mendocino ahead of an approaching frontal
system. Some gusts to 25 kt are possible over the extreme N just
ahead of the front, but a small craft advisory doens't appear
warranted due to duration and areal coverage of winds. Winds are
forecast to briefly become light northerly on Wednesday, then shift
to SW ahead of another frontal system late Wednesday night and
Thursday, but remain below advisory criteria.

A couple w-nw swell trains will be transiting the waters through the
period. Ongoing NW swell at around 15 seconds this morning will
settle into the 11 second range by Wednesday. The second batch of
swell will average around 13 seconds, arriving late Wednesday.

Heights of this swell will approach 10 ft by Thursday night. Longer
period SW swell will continue through much of the forecast cycle as
well, with periods ranging from 15 to 18 seconds. Sec

Fire weather Issued at 332 pm pdt Mon oct 22 2018. The marine
layer will continue to deepen tonight and extend well inland.

Areas above the marine layer will continue to see poor rh
recoveries. Winds on the ridges will turn to the south to
southwest late tonight. A weak surface front will bring a some
light rain Tuesday afternoon and evening. The best chance for a
wetting rain will be across del norte county and is possible in
humboldt county. Mendocino and trinity counties may see a few
light showers or sprinkles, but a wetting rain is not expected. A
broad flat ridge will build on Wednesday, keeping the area mostly
dry with above normal daytime high tempertures through Saturday.

Another weak warm front brush del norte county on Thursday,
however wetting rain amounts appear unlikely at this time. Mkk

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
ANVC1 - 9416841 - Arena Cove, CA 18 mi41 min E 1.9 G 2.9 55°F 56°F1018.1 hPa
46014 - PT ARENA - 19NM North of Point Arena, CA 39 mi39 min E 5.8 G 7.8 56°F 59°F1016.7 hPa53°F
46013 - Bodega Bay - 48NM North Northwest of San Francisco, CA 45 mi39 min NE 3.9 G 5.8 58°F1016.7 hPa

Wind History for Arena Cove, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Ukiah Municipal Airport, CA20 mi63 minN 010.00 miOvercast52°F44°F75%1016.2 hPa

Wind History from UKI (wind in knots)
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Last 24hrCalmCalmCalmSE4SE7SE9SE9S10S3CalmN3NW4NW3CalmCalmCalmS5Calm3E3CalmCalmCalmCalm
1 day agoCalmCalmCalmSE4SE8S8SE9SE7S5S4N3W3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm
2 days agoCalmCalmCalmSE3SE8SE9SE9S7
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Tide / Current Tables for Arena Cove, California (2)
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Arena Cove
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Tue -- 04:38 AM PDT     1.16 feet Low Tide
Tue -- 06:19 AM PDT     Moonset
Tue -- 07:32 AM PDT     Sunrise
Tue -- 10:45 AM PDT     5.73 feet High Tide
Tue -- 05:14 PM PDT     0.58 feet Low Tide
Tue -- 06:23 PM PDT     Moonrise
Tue -- 06:25 PM PDT     Sunset
Tue -- 11:22 PM PDT     5.10 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.63.82.71.81.31.21.72.63.84.85.55.75.34.43.11.910.60.81.52.53.64.55.1

Tide / Current Tables for Point Arena, California Current
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Point Arena
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Tue -- 02:18 AM PDT     -1.02 knots Max Ebb
Tue -- 05:53 AM PDT     0.00 knots Slack
Tue -- 06:19 AM PDT     Moonset
Tue -- 07:33 AM PDT     Sunrise
Tue -- 08:45 AM PDT     0.96 knots Max Flood
Tue -- 11:46 AM PDT     -0.00 knots Slack
Tue -- 02:39 PM PDT     -1.22 knots Max Ebb
Tue -- 06:22 PM PDT     0.00 knots Slack
Tue -- 06:23 PM PDT     Moonrise
Tue -- 06:25 PM PDT     Sunset
Tue -- 09:15 PM PDT     1.02 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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-0.2-0.7-1-1-0.7-0.40.10.50.90.90.80.4-0.1-0.7-1.1-1.2-1-0.6-0.20.30.8110.7

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 (12,3,4,5)
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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.