Wednesday, May24, 2017 L-36.com


Marine Weather and Tides
Manchester, CA

Version 3.4
What's New / NOTES
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 5:50AMSunset 8:29PM Wednesday May 24, 2017 8:09 PM PDT (03:09 UTC) Moonrise 4:23AMMoonset 6:19PM Illumination 0% Phase: New Moon; 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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PZZ540 Point Arena To Point Reyes To 10 Nm- 241 Pm Pdt Wed May 24 2017
Tonight..SE winds 5 to 15 kt. Wind waves 1 to 3 ft. NW swell 5 to 7 ft at 11 seconds.
Thu..SE winds 5 to 15 kt. Wind waves 1 to 3 ft. NW swell 5 to 7 ft at 11 seconds.
Thu night..NW winds 10 kt...becoming southeast after midnight. Wind waves 3 to 4 ft. NW swell 4 to 6 ft at 10 seconds.
Fri..SE winds 10 kt. Wind waves 2 ft or less. NW swell 4 to 6 ft at 10 seconds.
Fri night..NW winds 10 kt. Wind waves 2 ft or less. NW swell 3 to 5 ft at 10 seconds. Patchy fog after midnight.
Sat..W winds 5 to 15 kt. Wind waves 1 to 3 ft. NW swell 3 to 5 ft. Patchy fog.
Sun..NW winds 10 to 20 kt. Wind waves 2 to 4 ft. NW swell 3 to 5 ft.
Memorial day..NW winds 15 to 25 kt. Wind waves 3 to 5 ft. NW swell 2 to 3 ft.
PZZ500 241 Pm Pdt Wed May 24 2017
Synopsis for the central california coast and bays including the Monterey bay..Greater farallones...and cordell bank national marine sanctuaries... Low pressure off the central california coast will bring southerly winds to the area through Thursday. Local gusty winds can be expected Thursday along the big sur and Monterey bay coastline. Surface high pressure further out in the eastern pacific is bringing northerly winds offshore north of point reyes. This high will eventually rebuild off the coast resulting in increasing northerly winds by late this weekend.

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 250012
afdeka
area forecast discussion
national weather service eureka ca
512 pm pdt Wed may 24 2017

Synopsis A broad upper level trough will bring near to below
normal high temperatures through the rest of this week. A gradual
warm up is expected for the weekend into early next week. Coastal
areas will continue to see night and morning fog and low clouds
with afternoon sunshine.

Update An upper level trough moving into the pacific northwest
and northern rockies is bringing gusty northerly winds to the
coastal areas of northern ca. The strongest gusts are around the
crescent city area where gusts to 47 mph have been reported. These
are expected to continue over the next several hours as before
winds diminish later tonight. These are slightly stronger than
previously expected so have issued a wind advisory for the del
norte county coast and updated the forecast. Mkk rcl

Prev discussion issued 257 pm pdt Wed may 24 2017
synopsis... A broad upper level trough will bring near to below
normal high temperatures through the rest of this week. A gradual
warm up is expected for the weekend into early next week. Coastal
areas will continue to see night and morning fog and low clouds
with afternoon sunshine.

Discussion... High temperatures across the interior have been
running 5 to 15 degrees lower today compared to yesterday. The
cooling trend will continue on Thursday as a broad and baggy
upper trough from the northwest slides down an upper ridge over
the NE pacific and tracks eastward. The trough aloft will slowly
edge eastward on Friday, however high temperatures inland may have
to wait until this weekend before recovering to normal levels.

Ridging aloft will build this weekend into the early portion of
next week and temperatures will increase above normal again.

The marine layer will keep temperatures more seasonal through the
week with morning cloudiness and afternoon sunshine for coastal
regions. The layer did deepen today and skies were slower to
clear around the eureka area. South of the cape, the mendocino
coast has been socked in the last several days with the broken to
overcast clouds and fog. It has been much harder for the stratus
to clear out along the mendo coast where several small scale
eddies have been spinning up every day. Confidence is not high
there will much if any change on Thursday. The slight increase in
northerly winds on Friday along with cooling aloft may force the
stratus back south into central california.

An upper level ridge will amplify again this weekend bringing a
gradual warmup and above normal temperatures early next week. The
models continue to bring a splitting upper trough toward the coast
early next week. The end result appears to be a cut-off low that
will spiral southward along the central california coast by mid
week. There does appear to be some return flow or wrap around
moisture, however it remains too elusive at this time to pin-point
any particular day for tstms mon-wed next week.

Aviation... Another day of low clouds and visibilities (lifr-ifr)
at the coastal terminals extending from mendocino-del norte. From
cape mendocino to trinidad, the marine layer was especially
pronounced as it stretched over the coastal hills. Cec cleared by
late morning as strong northerly winds kicked in, but acv was
still "socked in" at 2 pm. Mid-late afternoon will see mostly
sunny skies. However, lingering stratus will maintain over a few
local coastal spots. Late afternoon to evening clearing at much of
the coast before another layer of marine clouds return tonight.

Bases of the cloud CIGS are expected to be a little higher. Inland
areas will continue to beVFR sunny. For uki, a southerly push
brought stratus up the russian river and briefly into the uki
valley in the morning. Models suggest a similar scenario for
Thursday morning.

Marine... N winds will continue to increase thru this evening as the
gradient between high pressure over the E pacific and an inverted
inland trough tightens. Strong gales will develop over the N outer
waters today with occasional gusts to storm force. Gale force gusts
will also develop over a large portion of the N near shore zone.

Across the S outer waters, sustained winds will reach gale force in
the NW corner of the zone, but frequent gale force gusts should
eventually develop elsewhere in the zone.

Model data continues to indicate that the pressure pattern and
associated gradient will spare the S near shore waters headline
criteria winds or seas. However, winds and seas will be more
treacherous near CAPE mendocino, and this area has been highlighted
in the text of the coastal waters forecast. There is uncertainty as
to whether the short period N wind waves generated will be able to
affect enough of this zone to warrant an advisory for seas at some
point. Headlines are basically unchanged from the previous package.

Winds will begin to decrease late tonight and Thursday with lighter
winds returning for the weekend. Sec
mariners headed north should wait until Fri or Sat before resuming
travel. Seas will probably be too large and steep on Thursday. It
will still be choppy on Friday, however the trend is for northerly
winds and seas to subside north of pt st george Fri through sat.

Eka watches warnings advisories
Ca... Wind advisory until 9 pm pdt this evening for caz101.

Northwest california coastal waters... Gale warning until 3 am pdt Thursday for pzz450.

Gale warning until 6 pm pdt Thursday for pzz470.

Gale warning until noon pdt Thursday for pzz475.

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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 mi70 min S 2.9 G 8 52°F 51°F1008.3 hPa (-1.7)
46014 - PT ARENA - 19NM North of Point Arena, CA 24 mi50 min S 9.7 G 14 51°F 1006.9 hPa49°F

Wind History for Arena Cove, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Ukiah, Ukiah Municipal Airport, CA31 mi74 minSSE 710.00 miFair74°F55°F54%1003.8 hPa

Wind History from UKI (wind in knots)
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Last 24hrW6CalmSE3S5S3CalmS5S5S5SE4S5SE4CalmCalmSE45SE6S9SE11SE9SW8SE10SE8S7
1 day agoCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmN34CalmE4E3E4CalmN8SW9
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2 days agoN4W3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm3CalmSE43SE9SE8SE6NW10W6Calm

Tide / Current Tables for Point Arena, California
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Point Arena
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Wed -- 04:44 AM PDT     -0.86 feet Low Tide
Wed -- 05:23 AM PDT     Moonrise
Wed -- 05:55 AM PDT     Sunrise
Wed -- 11:05 AM PDT     4.42 feet High Tide
Wed -- 04:21 PM PDT     1.21 feet Low Tide
Wed -- 07:18 PM PDT     Moonset
Wed -- 08:28 PM PDT     Sunset
Wed -- 10:35 PM PDT     6.45 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.73.21.60.2-0.7-0.8-0.30.723.24.14.44.23.52.61.71.21.323.14.45.66.36.4

Tide / Current Tables for Point Arena, California Current
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Point Arena
Click for Map
Wed -- 01:59 AM PDT     -1.61 knots Max Ebb
Wed -- 05:23 AM PDT     Moonrise
Wed -- 05:46 AM PDT     0.00 knots Slack
Wed -- 05:55 AM PDT     Sunrise
Wed -- 08:45 AM PDT     1.31 knots Max Flood
Wed -- 12:02 PM PDT     -0.00 knots Slack
Wed -- 02:28 PM PDT     -1.05 knots Max Ebb
Wed -- 05:43 PM PDT     0.00 knots Slack
Wed -- 07:18 PM PDT     Moonset
Wed -- 08:28 PM PDT     Sunset
Wed -- 08:38 PM PDT     1.12 knots Max Flood
Wed -- 11:32 PM PDT     -0.00 knots Slack
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
-0.8-1.4-1.6-1.4-1-0.50.20.81.21.31.10.70-0.6-1-1-0.7-0.30.10.711.10.80.3

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 (23,6,7,8)
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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.