Thursday, May24, 2018 L-36.com


Marine Weather and Tides
Philo, 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 5:50AMSunset 8:29PM Thursday May 24, 2018 6:41 PM PDT (01:41 UTC) Moonrise 2:42PMMoonset 2:28AM Illumination 77% 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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PZZ540 Point Arena To Point Reyes To 10 Nm- 224 Pm Pdt Thu May 24 2018
Tonight..W winds 10 kt. Wind waves 3 to 5 ft. W swell 4 to 5 ft at 11 seconds and S 3 to 4 ft at 15 seconds. Slight chance of showers after midnight.
Fri..S winds 10 kt. Wind waves 3 to 5 ft. W swell 4 to 5 ft at 11 seconds and S 3 ft at 15 seconds. Chance of showers.
Fri night..NW winds 10 to 20 kt. Wind waves 2 to 4 ft. Mixed swell nw 3 to 5 ft at 11 seconds and S 3 ft at 14 seconds. Chance of showers in the evening, then slight chance of showers after midnight.
Sat..NW winds 20 to 30 kt. Wind waves 4 to 6 ft. NW swell 5 to 7 ft at 11 seconds.
Sat night..NW winds 20 to 30 kt. Wind waves 5 to 7 ft. NW swell 7 to 9 ft at 9 seconds.
Sun..NW winds 15 to 25 kt. Wind waves 3 to 5 ft. NW swell 5 to 7 ft.
Memorial day..NW winds 15 to 25 kt. Wind waves 3 to 5 ft. NW swell 6 to 8 ft.
Tue..NW winds 20 to 30 kt. Wind waves 5 to 7 ft. NW swell 6 to 8 ft.
PZZ500 224 Pm Pdt Thu May 24 2018
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... High pressure near the coast will keep light to moderate winds over the coastal waters. Gusty winds will be possible this evening north of the bay bridge inside the san francisco bay. Northwest winds increase Friday. Gusty winds will impact the coastal waters this holiday weekend. Mixed seas with a longer period southwest swell and a smaller northwest swell.

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 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
ANVC1 - 9416841 - Arena Cove, CA 21 mi41 min WNW 5.1 G 8 55°F 53°F1018.1 hPa (-0.7)
46014 - PT ARENA - 19NM North of Point Arena, CA 28 mi31 min NNW 9.7 G 12 1017.2 hPa
46263 29 mi161 min 53°F6 ft

Wind History for Arena Cove, CA
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Ukiah Municipal Airport, CA13 mi1.8 hrsNNE 610.00 miMostly Cloudy70°F50°F49%1014 hPa

Wind History from UKI (wind in knots)
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Last 24hrN7N5CalmN6N5N5NE4N4N5N4N6N5NE4CalmE5Calm34CalmN10N5N7N6Calm
1 day agoN5N6NE4NE3CalmS4S6S4S5S3SE7SE6SE4SE4SE4SE5SE7SE7SE12
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2 days agoN7N6NE6CalmCalmE3NW3CalmCalmCalmCalmCalmCalmSE3CalmE4SE5SE7SE7SE6SE9--4NE8

Tide / Current Tables for Albion, California
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Albion
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Thu -- 02:16 AM PDT     1.23 feet Low Tide
Thu -- 03:30 AM PDT     Moonset
Thu -- 05:54 AM PDT     Sunrise
Thu -- 08:01 AM PDT     4.27 feet High Tide
Thu -- 02:00 PM PDT     0.57 feet Low Tide
Thu -- 03:43 PM PDT     Moonrise
Thu -- 08:29 PM PDT     Sunset
Thu -- 08:46 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
2.41.61.21.41.92.63.444.343.42.41.50.80.60.81.52.63.74.85.55.75.34.3

Tide / Current Tables for Point Arena, California Current
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Point Arena
Click for Map
Thu -- 03:17 AM PDT     0.00 knots Slack
Thu -- 03:29 AM PDT     Moonset
Thu -- 05:55 AM PDT     Sunrise
Thu -- 06:12 AM PDT     0.81 knots Max Flood
Thu -- 08:52 AM PDT     -0.00 knots Slack
Thu -- 11:45 AM PDT     -0.94 knots Max Ebb
Thu -- 03:19 PM PDT     0.00 knots Slack
Thu -- 03:43 PM PDT     Moonrise
Thu -- 06:29 PM PDT     1.03 knots Max Flood
Thu -- 08:28 PM PDT     Sunset
Thu -- 09:23 PM PDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.9-0.9-0.6-0.10.30.70.80.70.4-0.1-0.6-0.9-0.9-0.8-0.6-0.20.40.8110.80.2-0.4-0.9

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 (21,6,7,8)
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Ground Weather Radar Station Beal AFB, 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.