Tuesday, October16, 2018 L-36.com


Marine Weather and Tides
Trinidad, CA

Version 3.4
What's New / NOTES
10/6/2018 Colors of tide XTide graphs changed to emphasize that they were upgraded. See next note. Comments welcome.
10/4/2018 I have fixed XTide and updated the harmonic files. There were some name changes so you might have to click EDIT to find the new station name.

Sunrise 7:28AMSunset 6:34PM Tuesday October 16, 2018 5:32 PM PDT (00:32 UTC) Moonrise 1:40PMMoonset 11:27PM Illumination 50% Phase: First Quarter Moon; Moon at 7 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- 253 Pm Pdt Tue Oct 16 2018
Tonight..N winds 5 to 10 kt. Waves nw 3 ft at 5 seconds...and W 3 ft at 19 seconds. Patchy fog.
Wed..NW winds 5 kt. Waves N 2 ft at 4 seconds...and W 6 ft at 16 seconds. Patchy fog.
Wed night..N winds 5 kt. Waves N 2 ft at 4 seconds...and W 7 ft at 16 seconds. Patchy fog.
Thu..N winds 5 kt. Waves N 2 ft at 5 seconds...and W 7 ft at 15 seconds.
Thu night..N winds 5 kt. Waves N 2 ft at 4 seconds...and W 6 ft at 14 seconds.
Fri..N winds 5 to 10 kt. Waves N 2 ft at 5 seconds...and nw 6 ft at 13 seconds.
Sat..N winds 5 kt. Waves N 2 ft at 6 seconds...and nw 4 ft at 13 seconds.
Sun..W winds 5 kt. Waves nw 5 ft at 12 seconds.
PZZ400 253 Pm Pdt Tue Oct 16 2018
Synopsis for northern california waters..Winds will generally be light and out of the north during the work week. A long period northwesterly swell will continue to build across the waters this week. In addition, a long period westerly swell will also be present across the waters.


7 Day Forecast for Marine Location Near Trinidad city, CA
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location: 41.06, -124.14     debug


Area Discussion for - Eureka, CA
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Fxus66 keka 162154
afdeka
area forecast discussion
national weather service eureka ca
254 pm pdt Tue oct 16 2018

Synopsis Dry and mild afternoons accompanied by chilly nights
will persist throughout the week across interior northwest
california. Meanwhile, periods of low clouds and cooler afternoon
temperatures are expected along the coast. Otherwise, rain chances
are forecast to increase during the first half of next week.

Discussion Quasi-blocked flow aloft resides across the west
coast Tuesday afternoon, with large-scale subsidence occurring
over nwrn ca. Clear skies and mild afternoon temperatures prevail
for most areas, though patches of marine stratus are attempting to
develop in the vicinity of CAPE mendocino... As well as farther
offshore over the outer coastal waters. Short-term high resolution
model guidance indicates marine stratus will become increasingly
prevalent along the del norte humboldt coast tonight, followed by
partial clearing Wednesday afternoon, and then redevelopment
Wednesday night. Farther south... The mendocino county coast may
experience less stratus development due to drier subsident
conditions occurring within the lee of CAPE mendocino.

Otherwise, a deep-layer of dry air and clear skies will promote
strong radiational cooling across wind sheltered interior valleys
tonight and Wednesday night. As a result, min temperatures at or
below 36 f will likely yield frost. Refer to the latest frost
advisory for additional information.

Going into the weekend, the upper air pattern is forecast to
resemble a rex block. However, model guidance shows that pattern
breaking down Sunday into Monday as a cold upper trough digs
southward out of the gulf of alaska. This will cause heights to
fall over the west coast of the conus, and subsequently open the
region up to frontal intrusions. At this time, a precipitating
frontal wave is forecast to enter nwrn ca during Tuesday, followed
by a second wave Wednesday night.

Aviation A wide strip of stratus lingered off the north coast
today... Occasionally approaching the immediate coast due to weak
onshore flow, but continued to remain offshore nevertheless. Cec
was the exception this morning with lifr ifr stratus fog briefly
settling at the airport for a couple of hours. Around 2 pm,
stratus advection from the north approached cec's airport dropping
conditions to lifr. Next 24 hours: model guidance is a mixed bag
as far as low clouds overall returning to the coast. Offshore flow
will be weak and may limit but doubtfully not be able to
completely inhibit marine clouds from moving onshore in the
evening overnight. Inland areas will remain mostlyVFR and skc
through the period. Ta

Marine Light northerly winds will continue through the next
few days as a weak pressure gradient persists across the region. A
short northerly wind chop will combine with a longer period
northwesterly swell slowly building across the waters today
peaking at 6-8 feet at around 15 seconds on Thursday. This wave
set will then gradually subsiding as we go through the weekend. In
addition, a westerly swell up to 3 feet at 14-18 seconds will
persist through early this weekend. Short period northerly wind
waves around 4 feet will also help to enlarge the total wave
heights observed by mariners this week. Wci jt

Beach hazards Hazardous beach conditions will be possible
Wednesday morning through early Thursday morning with the arrival of
a long period northwesterly swell. Surf heights from 9 to 12 feet
will be possible for west-northwest facing beaches. In addition, the
threat for sneaker waves will be elevated, especially for steep
beaches. Beach goers should stay farther away from the ocean, and
never turn their back to the ocean, as hazardous waves can wash
farther up the beach at any time. Wci

Fire weather Warm temperatures and low humidity values will
persist across the interior through the weekend. In addition,
winds will occasionally become gusty out of the east across
exposed ridges. Otherwise, winds will be light and terrain driven
over the valleys. In the extended range, rain chances will
increase next Tuesday and Wednesday.

Eka watches warnings advisories
Ca... Beach hazards statement from Wednesday morning through
Wednesday evening for caz101-103-104-109.

Frost advisory from 1 am to 9 am pdt Wednesday for caz102>105-
110>113.

Northwest california coastal waters... None.

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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 16 mi32 min 52°F4 ft
HBYC1 - 9418767 - North Spit, CA 21 mi56 min N 5.1 G 6 52°F 53°F1020.5 hPa
46022 - EEL RIVER - 17NM West-Southwest of Eureka, CA 31 mi22 min N 9.7 G 12 54°F 53°F1020.4 hPa54°F
CECC1 - 9419750 - Crescent City, CA 47 mi32 min N 9.9 G 13 52°F 55°F1019.2 hPa (-0.3)

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, CA5 mi39 minVar 37.00 miFair59°F50°F72%1020 hPa

Wind History from ACV (wind in knots)
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Last 24hrW4CalmE4CalmCalmSE3CalmE4E4E4CalmCalmE5CalmE3CalmW3W5NW5NW5NW9W9S63
1 day agoSW4CalmCalmCalmCalmCalmCalmCalmCalmE3SE3CalmCalmSE4--CalmCalmCalmCalmNW4NW6NW6NW5NW4
2 days agoSW4S5S5SE4E5E5E3E3E3E4E3NE3E3CalmCalmS4W3W4W4SW5W7SW5W5SW3

Tide / Current Tables for Trinidad Harbor, California
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Trinidad Harbor
Click for Map
Tue -- 06:51 AM PDT     5.04 feet High Tide
Tue -- 07:29 AM PDT     Sunrise
Tue -- 11:02 AM PDT     First Quarter
Tue -- 11:58 AM PDT     3.69 feet Low Tide
Tue -- 02:39 PM PDT     Moonrise
Tue -- 05:28 PM PDT     5.32 feet High Tide
Tue -- 06:34 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.91.21.92.83.74.54.954.94.54.13.83.73.84.24.655.35.34.94.33.42.51.7

Tide / Current Tables for Mad River Slough, Arcata Bay, Humboldt Bay, California
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Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.


Weather Map and Satellite Images
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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 (20,4,5,8)
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Ground Weather Radar Station Eureka, 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.