Thursday, June29, 2017 L-36.com


Marine Weather and Tides
Manila, 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 5:47AMSunset 8:53PM Thursday June 29, 2017 8:47 AM PDT (15:47 UTC) Moonrise 11:09AMMoonset 11:57PM Illumination 30% Phase: Waxing Crescent; Moon at 6 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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This is a Weather Statement Zone, please check the Date to see if it has expired
PZZ410 1227 pm pdt Wed apr 19 2017 a marine weather statement has been issued for the following areas... Coastal waters from cape mendocino to pt. Arena ca out 10 nm... Coastal waters from pt. St. George to cape mendocino ca out 10 nm... Humboldt bay bar... Waters from cape mendocino to pt. Arena ca from 10 to 60 nm... Waters from pt. St. George to cape mendocino ca from 10 to 60 nm... Scattered Thunderstorms will continue to develop through 3 pm. The main storm hazards will be dangerous cloud to water lightnig...wind gusts to 40 knots or more...small hail...and waterspouts. Precautionary/preparedness actions... Water spouts are possible along with stronger Thunderstorms...locally higher waves...and lightning strikes. Boaters should seek safe harbor immediately until these storms pass.ground mariners can expect gusty winds to around 30 knots...locally higher waves...and lightning strikes. Boaters should seek safe harbor immediately until this storm passes. && lat...lon 4174 12417 4156 12410 4150 12398 4153 12407 4154 12408 4089 12413 4076 12423 4087 12414 4085 12409 4083 12408 4065 12431 4060 12416 4051 12413 4063 12432 4043 12441 4044 12581 4129 12555 4168 12568 4178 12579
PZZ400 219 Am Pdt Thu Jun 29 2017
Synopsis for northern california waters..Moderate to fresh north winds and steep seas will persist over the next several days. NEar gale force wind gusts will be possible across the outer waters this weekend.

7 Day Forecast for Marine Location Near Manila, CA
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location: 40.83, -124.16     debug


Area Discussion for - Eureka, CA
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Fxus66 keka 290926
afdeka
area forecast discussion
national weather service eureka ca
226 am pdt Thu jun 29 2017

Synopsis The weather this weekend will return to a more typical
summer pattern, with warm temperatures persisting across the
interior through the weekend. Marine stratus will continue along
the coast during the overnight and early morning hours for the
next couple of nights, with temperatures near or slightly warmer
than seasonal values continuing into early next week.

Discussion...

short term...

(today through Friday night)
the stratus has been rather stubborn in its recession along most
of the redwood coast the last few days. However, the latest
sounding out of mckinleyville now show the marine layer has
decreased another 500 feet to about 2000 feet depth. This will
likely lead to a burn off by midday. On the mendocino coast
satellite images indicate a small patch of stratus has now formed
early this morning around pt. Arena. Expect this will burn off
even faster than stratus on the north coast, by mid morning.

Expect this respite from the stratus to be short lived as an
approaching upper level rough will cause the marine layer to
deepen again over night Thursday into Friday. It will also
advecting the extensive marine stratus cloud shield off shore into
the coast as winds turn onshore. This a developing southwest flow
ahead of the incoming shortwave trough may allow the stratus to
penetrate a little further inland tonight, especially along the
river valleys.

Speaking of that shortwave, normally one would think our
convective chances for the interior would increase, as the base of
the trough and resultant best lift moves over the area. The
problem seen in the soundings this go around is the lack of
moisture. Given this is a fast moving system and there's no
prolonged period of southeast to south winds to advect moisture,
no convection is expected at this time. At this point, maybe some
slightly higher wind gusts may help warm temperatures a bit due
to increased down slope effects near the coast. Seasonably warm
values will continue Friday night, with soundings continuing to
show a bone dry profile.

Long term...

(Saturday through Thursday)
ridging aloft will once again attempt to build northeastward
over northwest ca, with 500mb heights increasing into the
586-590dkm range, with 850mb temps increasing into the 20-25 c
range as well for our neck of the woods. This will in turn cause
temperatures to rise about 2 to 5 degrees during the afternoon,
with the interior valleys likely seeing highs in the middle to
upper 90s. The increased heights temperatures aloft will also help
morning lows increase a degree or two. Another disturbance aloft
will pass by to our north for the beginning of the work week,
helping to flatten the ridge some. This will allow temperatures to
drop back to more seasonal values, with dry weather continuing
through the period. Mkn
aviation...

the marine layer has been being slowly compressed as short wave
ridging ahead of the approaching upper level short wave moved
across the area. This affect has lowered the CIGS along the
coast. Expect this to be reversed as the short wave approaches
later today and Friday. The impact at acv & cec will be for ifr
cigs today to lift and burn off by midday. Expect MVFR CIGS for
Friday morning. Expect visibilities to remain more or less
unrestricted. Following an afternoon of widespread clearing,
marine clouds will redevelop across the coastal areas in the
evening overnight tonight. Inland areas will remain
vfr... Including kuki. Mkn
marine...

fresh to moderate winds and steep seas will persist
through the next several days as surface based high pressure
offshore maintains a relatively tight gradient. The existing
small craft advisories remain in effect. Winds across the northern
waters could diminish subtly Thursday night into Friday. However,
they will increase again over the weekend with more numerous gale
force wind gusts possible across the outer waters. Thus, our
existing advisories have been extended. Mkn

Eka watches warnings advisories
Ca... None.

Northwest california coastal waters... Small craft advisory until 5 am pdt Monday for pzz450-455-470-
475.

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
HBYC1 - 9418767 - North Spit, CA 5 mi71 min SE 5.1 G 6 52°F 53°F1016.8 hPa
46244 - Humboldt Bay, North Spit, CA 11 mi56 min 54°F6 ft
46022 - EEL RIVER - 17NM West-Southwest of Eureka, CA 21 mi57 min N 16 G 18 53°F 52°F7 ft1016.1 hPa (+0.8)51°F
46213 - Cape Mendocino, CA (094) 48 mi55 min 50°F9 ft

Wind History for North Spit, Humboldt Bay, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Arcata / Eureka, Arcata Airport, CA12 mi54 minN 010.00 miOvercast54°F52°F93%1017.2 hPa
Fortuna Rohnerville Airport, CA19 mi72 minE 410.00 miOvercast52°F50°F94%1016.3 hPa

Wind History from ACV (wind in knots)
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Last 24hrNW5NW7NW6W5NW5NW7NW7NW8NW8NW10NW11NW9N3S4SE4S6S5SE7SE6SE6SE5----Calm
1 day ago4NW4NW7NW8NW7NW8NW8NW8NW7NW8NW11N7N5N6CalmCalmCalmS3S5S5S3CalmNW3NW3
2 days agoW3CalmCalmW5W6NW4W5W8NW6NW7NW7NW5NW3CalmCalmNE3N3NE3NE3NE3CalmN3N5NE4

Tide / Current Tables for Samoa, Humboldt Bay, California
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Samoa
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Thu -- 12:25 AM PDT     Moonset
Thu -- 04:32 AM PDT     6.50 feet High Tide
Thu -- 05:48 AM PDT     Sunrise
Thu -- 10:54 AM PDT     -0.22 feet Low Tide
Thu -- 12:08 PM PDT     Moonrise
Thu -- 06:00 PM PDT     6.69 feet High Tide
Thu -- 08:52 PM PDT     Sunset
Thu -- 11:41 PM PDT     2.26 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
33.94.95.86.46.45.74.42.81.30.1-0.20.21.32.64.15.46.46.76.45.54.33.22.4

Tide / Current Tables for Humboldt Bay Entrance, California
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Humboldt Bay Entrance
Click for Map
Thu -- 12:25 AM PDT     Moonset
Thu -- 04:05 AM PDT     5.51 feet High Tide
Thu -- 05:48 AM PDT     Sunrise
Thu -- 11:01 AM PDT     -0.04 feet Low Tide
Thu -- 12:09 PM PDT     Moonrise
Thu -- 05:41 PM PDT     5.83 feet High Tide
Thu -- 08:52 PM PDT     Sunset
Thu -- 11:48 PM PDT     2.43 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
33.84.65.25.55.34.63.62.31.10.3-00.31.22.53.955.75.85.54.73.93.12.6

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 (11,2,3,4)
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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.