Thursday, October19, 2017 L-36.com


Marine Weather and Tides
Fort Bragg, CA

Version 3.4
What's New / NOTES
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.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 7:26AMSunset 6:28PM Thursday October 19, 2017 2:19 AM PDT (09:19 UTC) Moonrise 6:15AMMoonset 5:55PM Illumination 1% Phase: Waning Crescent; Moon at 29 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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PZZ455 Cape Mendocino To Pt Arena Out 10 Nm- 902 Pm Pdt Wed Oct 18 2017
.small craft advisory in effect from Thursday morning through Thursday afternoon...
.hazardous seas warning in effect from Thursday afternoon through Friday afternoon...
Tonight..SE winds 5 to 10 kt. Waves nw 5 ft at 12 seconds. Slight chance of rain.
Thu..SE winds 10 to 20 kt. Gusts up to 30 kt. Waves S 5 ft at 6 seconds...and nw 7 ft at 16 seconds. Slight chance of rain.
Thu night..W winds 5 to 10 kt. Waves nw 18 ft at 17 seconds. Rain.
Fri..W winds 5 to 10 kt. Waves nw 20 ft at 16 seconds.
Fri night..SE winds 5 kt. Waves nw 16 ft at 16 seconds.
Sat..SE winds 5 to 10 kt. Waves nw 12 ft at 14 seconds.
Sun..NW winds 10 to 15 kt. Waves nw 10 ft at 13 seconds.
Mon..N winds 5 to 15 kt. Waves N 4 ft at 7 seconds...and nw 10 ft at 14 seconds.
PZZ400 902 Pm Pdt Wed Oct 18 2017
Synopsis for northern california waters..A cold front will move across the waters on Thursday, resulting in small craft southerlies and steep wind waves by afternoon. After the front passes east, a large northwest swell will impact the coastal waters Thursday night through Friday.

7 Day Forecast for Marine Location Near Fort Bragg, CA
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location: 39.42, -123.8     debug


Area Discussion for - Eureka, CA
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Fxus66 keka 182232
afdeka
area forecast discussion
national weather service eureka ca
332 pm pdt Wed oct 18 2017

Synopsis An approaching storm system will bring increasing south
winds and widespread rain across northwest california for Thursday.

There is another chance for rain this weekend, primarily to the
north, before building high pressure brings warm and dry weather for
early next week.

Discussion Soon we will undergo a swift change in weather
conditions as an approaching storm system brings increasing south
winds and widespread rain to northwest california for Thursday.

Southerly winds will begin to increase tonight, bringing breezy
conditions along the humboldt and del norte county coasts with
stronger gusts expected across ridgetops. South winds will peak
Thursday afternoon with gusts around 45 mph above 1000 feet and 50
mph across ridge tops. A wind advisory was hoisted for areas above
1000 feet. This looks to be a lower-end advisory withs areas like
kneeland and other exposed ridges possibly sees 45 to 50 mph wind
gusts Thursday afternoon. Other areas won't be as strong but still
breezy ahead of the front.

Once the rain arrives, winds should quickly diminish. The front
will make first impact on del norte county late Thursday morning
into early afternoon. The band of rain will continue to shift
southeastward Thursday evening with parts of trinity and mendocino
counties observing rain later Thursday night and persisting into
Friday. Storm totals through Friday evening are amounting to 2 to
3 inches for del norte, 1 to 1.75 inches for humboldt, and 0.25
to 1 inch for trinity and mendocino counties. Any breaks from rain
on Friday will be shortlived as another upper wave will bring
moist onshore flow for Saturday. This means light, but persistent
rain will impact northwest california bringing another 0.50-1.50
inches to primarily the north.

Snowlevels will remain near 5000 feet during the rain with colder
air moving in behind the front. 500 mb heights will fall to -28c
early Friday morning. Some convective showers will be possible but
thunderstorms potential still looks low. Looking ahead into next
week, building high pressure will bring a return of dry weather and
increasing temperatures. Kml

Aviation Stratus clouds and fog persisted along the north coast
through the day. Therefore coastal airports dropped to lifr ifr
conditions this morning. There was partial afternoon clearing.

However, the low cloud fog remained a threat to acv and cec
through afternoon as marine stratus continued to hug the immediate
coast. Onshore flow allowed for low clouds and fog to yo yo over
acv & cec... With these conditions to continue through the evening
and penetrate into local coastal valleys. In the morning... More
cloud advection ahead of an approaching weather system that will
bring rain to the north coast overnight and Thursday. Inland
areas remainedVFR, but will also see increasing cloudiness as the
weather system advances on Thursday.

Marine Southerly winds are beginning to develop ahead of the
advancing cold front in the northern waters. The southern waters
will continue to have northerly winds for a few more hours before
they eventually switch around as well. Southerly winds will continue
to strengthen tonight through tomorrow afternoon. A few gale force
gusts may be possible across the northern outer waters however due
to the small area and limited time no gale warning will be issued.

As the winds begin to die down Thursday afternoon a very large and
long period west-northwest swell will build behind the front thu
night and Friday therefore, a hazardous seas warning has been
hoisted. Another round of brisk southerly winds and steep southerly
waves will return Sat for the northern waters. Large seas will
persist through the weekend and into early next week as the westerly
swell begins to decay.

Wci

Beach hazards and surf Models remain consistent with
very large west-northwest swell building Thursday night and Friday.

A swell of 17 to 20 feet with periods near 18 seconds will occur
late Thursday night and peak early Friday morning. Swell of this
magnitude will result in very large breakers in the surf zone as
well as hazardous waves in the harbor entrances. Current indications
are for surf to exceed 20 feet for west and northwest oriented
locations by late Thursday afternoon and remain elevated through
Friday night and a high surf advisory has been issued. Some beaches
still have a summer profile which will allow for large wave run-up
onto beaches. This surf will slowly begin to decay through the
weekend.

Wci

Fire weather Increasing southerly winds will bring stronger
gusts above 1000 feet, primarily to ridgetops across humboldt and
del norte counties. Breezy winds, however, should be expected
elsewhere tonight and peak Thursday afternoon. Fortunately there
will be good recoveries tonight with improving humidity Thursday
afternoon as this approaching storm system ushers in moist air.

Pretty much all of northwest california will receive a wetting
rain later Thursday afternoon through early Friday morning. As
typically, the greater rainfall totals will be farther north.

Relief from critical fire weather conditions will persist through
the weekend as another upper wave brings a chance for rain on
Saturday. Then building high pressure will bring a return of
increasing temperatures and dry conditions next week. Kml

Eka watches warnings advisories
Ca... High surf advisory from 6 pm Thursday to 6 pm pdt Friday for
caz101-103-104-109.

Wind advisory from 11 am to 5 pm pdt Thursday for caz102-104>106.

Northwest california coastal waters... Small craft advisory from 3 am to 3 pm pdt Thursday for pzz470.

Hazardous seas warning from 3 pm Thursday to 3 pm pdt Friday for
pzz450-455-470-475.

Small craft advisory from 9 am to 3 pm pdt Thursday for pzz450-
455-475.

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46263 7 mi49 min 53°F6 ft
46014 - PT ARENA - 19NM North of Point Arena, CA 16 mi39 min ESE 3.9 G 5.8 1016.3 hPa
ANVC1 - 9416841 - Arena Cove, CA 35 mi49 min E 2.9 G 4.1 53°F 52°F1017 hPa

Wind History for Arena Cove, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Ukiah Municipal Airport, CA37 mi23 minE 310.00 miFair47°F37°F69%1015 hPa

Wind History from UKI (wind in knots)
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Last 24hrCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmW7W8NE7CalmCalmCalmCalmCalmCalmCalmCalm
1 day agoCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm3CalmCalm3SE5SE3E5CalmN4CalmCalmCalmCalmCalm
2 days agoCalmCalmCalmCalmCalmCalmE3CalmCalm3N4CalmCalmCalmCalmW3CalmCalmCalmCalmCalmCalmCalmCalm

Tide / Current Tables for Noyo River, California
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Noyo River
Click for Map
Thu -- 05:13 AM PDT     1.17 feet Low Tide
Thu -- 07:15 AM PDT     Moonrise
Thu -- 07:29 AM PDT     Sunrise
Thu -- 11:25 AM PDT     6.03 feet High Tide
Thu -- 12:12 PM PDT     New Moon
Thu -- 05:53 PM PDT     0.17 feet Low Tide
Thu -- 06:29 PM PDT     Sunset
Thu -- 06:54 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
5.34.63.62.51.61.21.32.13.24.45.465.95.242.61.30.40.20.61.52.73.94.8

Tide / Current Tables for Point Cabrillo, California Current
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Point Cabrillo
Click for Map
Thu -- 12:02 AM PDT     -0.00 knots Slack
Thu -- 02:45 AM PDT     -1.05 knots Max Ebb
Thu -- 06:17 AM PDT     0.00 knots Slack
Thu -- 07:15 AM PDT     Moonrise
Thu -- 07:29 AM PDT     Sunrise
Thu -- 09:10 AM PDT     1.02 knots Max Flood
Thu -- 12:04 PM PDT     -0.00 knots Slack
Thu -- 12:12 PM PDT     New Moon
Thu -- 03:01 PM PDT     -1.28 knots Max Ebb
Thu -- 06:30 PM PDT     Sunset
Thu -- 06:46 PM PDT     0.00 knots Slack
Thu -- 06:55 PM PDT     Moonset
Thu -- 09:45 PM PDT     1.11 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0-0.6-1-1-0.9-0.6-0.20.40.810.90.60.1-0.6-1.1-1.3-1.2-0.9-0.50.10.711.10.9

Weather Map and Satellite Images
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Weather Map
wmap_P
IR Satellite Image from GEOS
west_satellite

GOES Local Image of CentralWestCoast    EDIT
Geos

Wind Forecast for Eureka, CA (5,6,7,8)
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Ground Weather Radar Station Eureka, CA
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weather_mapweather_map weather_map

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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.