Wednesday, October18, 2017 L-36.com


Marine Weather and Tides
Philo, 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 7:25AMSunset 6:29PM Wednesday October 18, 2017 1:33 PM PDT (20:33 UTC) Moonrise 5:13AMMoonset 5:22PM Illumination 2% Phase: Waning Crescent; Moon at 28 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- 905 Am Pdt Wed Oct 18 2017
Today..NW winds 5 to 15 kt...increasing to 10 to 20 kt in the afternoon. Wind waves 3 to 5 ft. Mixed swell nw 4 to 6 ft at 12 seconds and sw 3 ft at 16 seconds. Patchy fog late in the morning.
Tonight..NW winds 10 to 20 kt. Wind waves 3 to 5 ft. Mixed swell nw 4 to 5 ft at 11 seconds and sw 3 ft at 16 seconds.
Thu..S winds 10 kt...increasing to 10 to 20 kt in the afternoon. Wind waves 2 to 4 ft. Mixed swell nw 4 to 6 ft at 11 seconds and sw 3 ft at 15 seconds. Chance of rain in the afternoon.
Thu night..W winds 5 to 15 kt. Wind waves 1 to 3 ft. NW swell 9 to 12 ft at 20 seconds and S 3 ft at 15 seconds. Rain likely in the evening, then chance of showers after midnight.
Fri..NW winds 5 to 15 kt. Wind waves 1 to 3 ft. W swell 13 to 16 ft at 18 seconds.
Sat..NW winds 5 to 15 kt. Wind waves 1 to 3 ft. W swell 9 to 12 ft.
Sun..NW winds 15 to 25 kt. Wind waves 3 to 5 ft. W swell 8 to 10 ft.
PZZ500 905 Am Pdt Wed Oct 18 2017
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Areas of fog this morning across the coastal waters and into the bays. Winds will increase over the bays this afternoon into tonight. A cold front will move across the waters late tomorrow bringing chances of light rain. A moderate to long period mixed northwesterly and southerly swell has arrived with buoys reporting periods of 17 to 18 seconds across the waters. Late Thursday into Friday a large northwesterly swell train will move across he area. This large swell will create hazardous conditions.

7 Day Forecast for Marine Location Near Philo, CA
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location: 39.15, -123.45     debug


Area Discussion for - Eureka, CA
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Fxus66 keka 181147
afdeka
area forecast discussion
national weather service eureka ca
358 am pdt Wed oct 18 2017

Synopsis Widespread rain will spread across the region
Thursday afternoon into Friday, with lighter showers persisting
through the weekend. Drier and warmer conditions are expected
next week.

Discussion The pictures from space this morning show stratus
along del norte and humboldt counties and it crawling towards the
mendocino coast. The local profiler at kacv depicts a shallow
marine layer so there should at least be partial clearing along
the coast this afternoon. This is expected to be short lived as
high pressure will be giving way to a shortwave trough as it digs
into the pacnw. Come Thursday morning, portions of the CWA will
start to see rain and by the afternoon widespread rain is
forecast for all of NW ca which will then continue into Friday.

Storm total rainfall accumulation is forecast to be around 2
inches over del norte county, ranging to around a quarter inch
over southern mendocino county.

After the frontal passage, snow levels are forecast to drop to
near 5000 feet. Snow accumulation should remain confined to
elevations above 6000 feet and near the trinity alps. Post frontal
thunderstorms are not expected as unfavorable convective
parameters, rising 500mb heights, and slightly warmer midlevel
temperatures will thwart development.

For the weekend, shower activity will persist but should remain
limited to areas north of mendocino county. Models continue to
suggest drier and warmer weather for early next week as high
pressure builds over the area.

Aviation A shallow layer of fog and low clouds was hugging
the coastline early this morning. As of 4am, lifr conditions has
been occurring at kcec and kacv. High resolution models indicate
moist boundary layer air holding through the day. Thus the stratus
may end up persisting over or nearby the coastal terminals through
the day. Any clearing will be brief. Away from the shoreline,VFR
conditions will continue through today. The marine layer will likely
deepen tonight with low clouds and ifr conditions pushing deeper
into the interior river valleys by early thu.

Marine The tail end of a robust cold front will move across
the waters on thu. Southerly winds in advance of this cold front may
briefly gust up to 35 kt north of CAPE mendo. Steep southerly wind
waves will also be generated, primarily outside 10nm. The exception
will be around pt st george which will be near the end of the fetch.

Large swell from 18 to 22 feet with long periods will build behind
the front Thu night. Surf is expected to build Thu night with
breakers up to 25 ft. High surf conditions will continue through the
day on Friday. The large seas will subside this weekend, but an
active storm track will maintain hazardous seas through the weekend.

Fire weather West-southwesterly winds are forecast to
strengthen across area ridgetops tonight and into Thursday ahead
of a cold front. However, rh values will be increasing as winds
strengthen, which should mitigate a more significant fire weather
threat. By Thursday afternoon, widespread rain will spread across
northwest california, with storm total values near 2 inches
expected in del norte county, ranging to around a quarter inch
over southern mendocino county. Lighter showers will then persist
through the weekend, primarily north of mendocino county, before
warmer and drier conditions return next week.

Beach hazards and surf Enp and nwps remained consistent with
large west-northwest swell building Thu night and fri. Swell around
18 to 20 feet with periods near 17 seconds will build Thu night and
peak early Friday morning. Swell of this magnitude will result in
large breakers in the surf zone as well as hazardous waves in the
harbor entrances. A high surf advisory has been hoisted.

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

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

Hazardous seas watch from Thursday afternoon through Friday
afternoon for pzz450-455-470-475.

Small craft advisory from 3 am to 3 pm pdt Thursday for pzz470.

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ANVC1 - 9416841 - Arena Cove, CA 21 mi46 min NW 6 G 8.9 51°F 52°F1019.8 hPa
46014 - PT ARENA - 19NM North of Point Arena, CA 28 mi34 min WNW 9.7 G 14 1019.1 hPa (+0.4)
46263 29 mi34 min 53°F7 ft

Wind History for Arena Cove, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Ukiah Municipal Airport, CA13 mi38 minN 010.00 miFair74°F30°F20%1016.1 hPa

Wind History from UKI (wind in knots)
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Last 24hrCalm3SE5SE3E5CalmN4CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm
1 day agoCalmCalmCalmW3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm3Calm
2 days agoCalmE3CalmSE4SW3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmE3CalmCalm3N4Calm

Tide / Current Tables for Albion, California
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Albion
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Wed -- 04:32 AM PDT     0.80 feet Low Tide
Wed -- 06:14 AM PDT     Moonrise
Wed -- 07:28 AM PDT     Sunrise
Wed -- 10:58 AM PDT     5.88 feet High Tide
Wed -- 05:08 PM PDT     0.46 feet Low Tide
Wed -- 06:23 PM PDT     Moonset
Wed -- 06:31 PM PDT     Sunset
Wed -- 11:25 PM PDT     5.25 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.83.72.51.50.90.91.42.43.54.75.55.95.54.53.21.80.90.50.71.52.53.64.65.2

Tide / Current Tables for Point Arena, California Current
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Point Arena
Click for Map
Wed -- 02:12 AM PDT     -1.10 knots Max Ebb
Wed -- 05:45 AM PDT     0.00 knots Slack
Wed -- 06:13 AM PDT     Moonrise
Wed -- 07:28 AM PDT     Sunrise
Wed -- 08:43 AM PDT     1.07 knots Max Flood
Wed -- 11:38 AM PDT     -0.00 knots Slack
Wed -- 02:33 PM PDT     -1.22 knots Max Ebb
Wed -- 06:14 PM PDT     0.00 knots Slack
Wed -- 06:23 PM PDT     Moonset
Wed -- 06:31 PM PDT     Sunset
Wed -- 09:13 PM PDT     1.10 knots Max Flood
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.4-0.9-1.1-1-0.8-0.40.10.711.10.90.4-0.3-0.9-1.2-1.2-1-0.7-0.10.50.91.110.7

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 (16,3,4,5)
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Ground Weather Radar Station Beal AFB, 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.