Monday, March27, 2017 L-36.com


Marine Weather and Tides
Big Lagoon, CA

Version 3.4
What's New / NOTES
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.
3/12/2015 - Added section for Gulf current for users in the GMZ marine zones.
This was requested by a user. If you have requests, please let me know.

Sunrise 7:04AMSunset 7:38PM Monday March 27, 2017 9:33 AM PDT (16:33 UTC) Moonrise 6:08AMMoonset 6:26PM Illumination 0% Phase: New Moon; Moon at 0 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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PZZ450 Pt St George To Cape Mendocino Out 10 Nm- 835 Am Pdt Mon Mar 27 2017
.small craft advisory in effect through Wednesday morning...
Today..NW winds 5 to 10 kt. Waves W 10 ft at 14 seconds.
Tonight..N winds 5 to 10 kt. Waves W 12 ft at 15 seconds.
Tue..NW winds 5 to 10 kt. Waves W 13 ft at 14 seconds.
Tue night..SW winds up to 5 kt. Waves W 10 ft at 16 seconds.
Wed..W winds 5 to 10 kt. Waves W 10 ft at 16 seconds.
Thu..N winds 10 to 20 kt. Waves N 5 ft at 8 seconds...and W 9 ft at 14 seconds.
Fri..N winds 10 to 20 kt. Waves N 5 ft at 8 seconds...and W 8 ft at 14 seconds.
PZZ400 835 Am Pdt Mon Mar 27 2017
Synopsis for northern california waters..Light to moderate northerly winds will prevail across the waters today. An elevated westerly swell will propagate across the waters the next few days. A weak cold front will move across the waters Wednesday night increasing the winds primarily across the outer waters Thursday and Friday.

7 Day Forecast for Marine Location Near Big Lagoon, CA
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location: 41.17, -124.32     debug


Area Discussion for - Eureka, CA
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Fxus66 keka 271140
afdeka
area forecast discussion
national weather service eureka ca
440 am pdt Mon mar 27 2017

Synopsis A trough will generate one last round of showers today
before high pressure builds this afternoon bringing drier weather
conditions through Tuesday.

Discussion A shortwave trough embedded in northwesterly flow
will continue to generate periods of showers through this
morning. Mid level lapse rates remain modest as temperatures
through the entire column cool. Even though freezing levels will
fall to around 3000-3500 feet, the potential for hail this morning
appears to be quite low with very meager CAPE (weak updrafts) and
low equilubrium levels, up to 12kft. Thus will remove the isolated
hail from the forecast for this morning.

Upper level ridging and stable air will build toward the coast
this afternoon bringing an end to the shower activity by this
evening. Cooler air will settle over the area tonight and frost
will be a distinct possibility for interior mendocino county.

Stronger subsidence and light offshore winds should provide steady
drying through early Tuesday. A frost advisory will need to be
considered with temperatures expected to fall to 34f-36f in some
of the valleys of northern mendocino. Except for morning frost,
Tuesday is shaping up to be a fine day after the morning low
clouds and fog burn off in the interior valleys.

Dry conditions should last through the morning hours on Wednesday
as surface ridging remains over the area. Another front will
approach the west coast Wed afternoon. The models have slowed
down the warm front slightly, but still have the cold front
moving through Wednesday night when most of the rain is expected.

Ridging aloft and robust northerly flow at the surface will
build after the passage of a mid level shortwave trough on thu.

With brisk northerly winds offshore, coastal areas will probably
get fairly windy each afternoon, especially on Friday. Dry weather
will likely hold into the weekend, however the GFS and ecmwf
continue to forecast the ridge to flatten out toward the end of
the weekend in response to another shortwave trough. Some rain or
showers will certainly be possible Sun or mon. For now will keep
the forecast dry with only a slight chance of rain. We may need to
beef up the rain chances if the models continue on their present
course.

Aviation Vfr to MVFR conditions and light winds to calm
conditions will continue at kcec, kacv and kuki through the early
morning. The lower conditions will due to reduced ceilings and/or
visibilities as showers move across the region at times this
morning.VFR conditions and light winds will prevail at kcec, kacv
and kuki late this morning through tonight as a high pressure
ridge builds across the region.

Marine Light to moderate northwesterly winds will prevail
across the waters today as a weak high pressure ridge builds
across the region. An elevated westerly swell will propagate
across the waters today through Wednesday. Therefore small craft
advisories will be in effect across all the waters today through
Wednesday morning. A weak cold front will move across the waters
Wednesday night and the winds will increase. The winds and seas
will be higher across the outer waters and in or near any showers.

Small craft advisories are likely across the outer waters
Thursday and Friday due to increasing winds.

Eka watches/warnings/advisories
Ca... None.

Northwest california coastal waters... Small craft advisory from 9
am this morning to 9 am pdt Wednesday for pzz450-470-475. Small
craft advisory from 3 pm this afternoon to 9 am pdt Wednesday for
pzz455.

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46244 - Humboldt Bay, North Spit, CA 20 mi42 min 53°F8 ft
HBYC1 - 9418767 - North Spit, CA 28 mi57 min WNW 12 G 15 51°F 53°F1023.7 hPa
46022 - EEL RIVER - 17NM West-Southwest of Eureka, CA 33 mi43 min NW 12 G 14 52°F 52°F8 ft1023 hPa (+1.3)44°F
CECC1 - 9419750 - Crescent City, CA 40 mi45 min NNE 2.9 G 8 47°F 54°F1023.5 hPa
46027 - ST GEORGES - 8NM West Northwest of Crescent City, CA 47 mi43 min NNW 3.9 G 5.8 50°F 53°F7 ft1022.7 hPa (+2.1)

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, CA17 mi40 minNNE 310.00 miOvercast48°F46°F93%1024.1 hPa

Wind History from ACV (wind in knots)
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W5SW10SW73SE3SE3SE4SE5CalmCalmSE3W9
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1 day agoE4W3W5W6NW8NW8NW5NW5NW5NW3CalmCalmE3E3SE3SE4E4E6E4SE5SE10SE9SE14
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2 days agoE5SE6SE8S7SW9SW10SW12SW10SW10SW9S6SE3S54S4CalmSE3E4E4CalmCalmCalmN7E4

Tide / Current Tables for Trinidad Harbor, California
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Trinidad Harbor
Click for Map
Mon -- 05:55 AM PDT     0.84 feet Low Tide
Mon -- 07:07 AM PDT     Sunrise
Mon -- 07:07 AM PDT     Moonrise
Mon -- 11:59 AM PDT     6.63 feet High Tide
Mon -- 06:14 PM PDT     0.02 feet Low Tide
Mon -- 07:25 PM PDT     Moonset
Mon -- 07:36 PM PDT     Sunset
Mon -- 07:59 PM PDT     New Moon
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
6.45.94.93.52.11.20.81.32.33.85.26.36.66.25.13.51.90.70.10.31.22.84.45.8

Tide / Current Tables for Mad River Slough, Arcata Bay, Humboldt Bay, California
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Mad River Slough
Click for Map
Mon -- 12:48 AM PDT     7.19 feet High Tide
Mon -- 06:33 AM PDT     0.93 feet Low Tide
Mon -- 07:07 AM PDT     Sunrise
Mon -- 07:07 AM PDT     Moonrise
Mon -- 12:50 PM PDT     7.60 feet High Tide
Mon -- 06:53 PM PDT     0.04 feet Low Tide
Mon -- 07:25 PM PDT     Moonset
Mon -- 07:36 PM PDT     Sunset
Mon -- 07:59 PM PDT     New Moon
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
6.97.26.65.33.62.11.111.83.24.86.37.37.66.95.53.61.80.500.623.75.4

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 (12,3,4,5)
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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.