Wednesday, January24, 2018 L-36.com


Marine Weather and Tides
Trinidad, 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 7:32AMSunset 5:25PM Tuesday January 23, 2018 9:11 PM PST (05:11 UTC) Moonrise 11:14AMMoonset 12:00AM Illumination 49% 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- 832 Pm Pst Tue Jan 23 2018
.small craft advisory in effect until midnight pst tonight...
.gale warning in effect from midnight pst tonight through Wednesday morning...
Tonight..S winds 25 to 35 kt. Waves S 10 ft at 9 seconds... And W 7 ft at 13 seconds. Rain.
Wed..SW winds 15 to 25 kt. Gusts up to 35 kt. Waves S 10 ft at 9 seconds...and W 8 ft at 13 seconds. Rain.
Wed night..S winds 10 to 15 kt. Waves W 11 ft at 9 seconds... And W 4 ft at 16 seconds. Showers and isolated Thunderstorms.
Thu..S winds 10 kt. Waves sw 6 ft at 6 seconds...and W 17 ft at 14 seconds. Showers and isolated Thunderstorms.
Thu night..SW winds 5 to 10 kt. Waves W 3 ft at 5 seconds... And W 16 ft at 15 seconds.
Fri..SE winds 10 to 20 kt. Waves nw 14 ft at 13 seconds.
Sat..S winds 10 to 20 kt. Waves W 10 ft at 9 seconds.
Sun..SE winds 5 to 10 kt. Waves W 8 ft at 11 seconds.
PZZ400 832 Pm Pst Tue Jan 23 2018
Synopsis for northern california waters..Southerlies will strengthen to gales tonight in advance of an approaching front. The potential for gale force winds will diminish through the day on Wed. Large and steep southerly wind waves will build tonight and last through Wed. Large and steep westerly waves will follow on Thu, and then subside on Fri.

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 232249
afdeka
area forecast discussion
national weather service eureka ca
249 pm pst Tue jan 23 2018

Synopsis Stormy weather in store for the next few days. Windy
tonight, heavy rain on Wednesday, snow on Thursday for interior
locations. Showers on Friday and continued wet weather on Saturday.

Dry weather after that.

Discussion Active weather through the end of the work week. We
have a strong weather front ready to make landfall over nw
california. Do expect southerly wind gusts to 50 mph in exposed
ridgetop locations in humboldt and mendocino county. Crescent city
will also be feeling some of these wind gusts. Have a wind advisory
in effect tonight through tomorrow morning.

Rainfall forecast still on track for this weather system, with
little or no change on the rainfall amount. Through Thursday, expect
1 to 2 inches of rainfall, with higher amounts in coastal windward
slopes. Precipitation will taper off Wednesday evening, and become
showery.

Much colder air will filter into the area on the back side of this
weather front. This will drop the snow level down to 2000 to 2500
feet. From Wednesday night through Friday morning, do expect 2 to 7
inches of snow for locations including collier tunnel, berry summit,
buckhorn summit. Even though this airmass is colder than the airmass
on Sunday, the temperature profile will be fairly close to 32 f.

Think that wet snow will be the primary precipitation form. Roads
may be very slick with temperatures near 32 f. Issue a winter
weather advisory for this snow event.

Showers will continue into Friday. Models are now hinting on an
atmospheric river impacting northern NW ca on Saturday, before
shifting to the north towards oregon on Sunday. This may mean a wet
Saturday for NW ca, then drying on Sunday.

Marine Southerlies will ramp up tonight in advance of a
cold front. Gale force winds are very probable from CAPE mendo
northward tonight. A gust around 50kt certainly is not completely
out of the question, around the cape, late tonight or early wed.

The high resolution models as well as the coarser gfs20 continues to
indicate southerly winds weakening south of CAPE mendo early wed.

Gale force winds for mendo waters early Wed morning is not as
likely. The potential for gale force winds will diminish through the
day on wed, however, expect brisk SW and W winds to develop behind
the front. Winds should ease up on thu.

Steep southerly wind waves will build tonight. The highest southerly
waves will combine with westerly swell for combined seas near 17 ft
in the northern outer waters (pzz470). Combined seas will eventually
reach 12 to 15 ft throughout the rest of the waters by early wed.

Large and steep westerly waves will persist through the remainder of
the week due to an active storm track across the northern pacific.

The largest wave group looks to arrive on Thu with significant wave
heights peaking near 17 ft with periods near 14 seconds. Winds
should go fairly light during the day on fri, though seas will be
slow to subside.

Another storm will approach Fri night and southerly wind waves will
once again be on the increase. The GFS and ECMWF were not in great
agreement on the location and evolution of this storm, so confidence
in the wind and wave forecast for Sat remains low.

Aviation Regional air terminals will continue to come under the influence
of another cold front today and overnight. At noonday, most coastal
taf sites were maintainingVFR with breezy gusty southerly winds.

Cec was reporting light rain. Additionally, upper winds near the
boundary level were ssw and strong enough to cause llws at coastal
terminals. Interior valleys areas had patchy lifr ifr CIGS and vis
this morning. However, eastern mendocino ukiah valley area was
socked in with low clouds... And continued so through early
afternoon. Through the remainder of the afternoon's 24 hour taf
period, expect increasing flight hazards: lower CIGS vis, moderate
to heavy rain, strong southerly winds and llws across sections of
northwest california. Ta

Eka watches warnings advisories
Ca... Winter weather advisory from 4 pm Wednesday to 4 am pst Friday
for caz102-105>108-111.

Wind advisory from midnight tonight to 6 am pst Wednesday for
caz101.

Wind advisory from 8 pm this evening to 8 am pst Wednesday for
caz102-105-106.

Northwest california coastal waters... Small craft advisory until 4 pm pst Wednesday for pzz455.

Small craft advisory until midnight pst tonight for pzz450.

Gale warning from midnight tonight to 9 am pst Wednesday for
pzz450.

Gale warning until 9 am pst Wednesday for pzz470-475.

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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 mi41 min 53°F8 ft
HBYC1 - 9418767 - North Spit, CA 21 mi41 min S 22 G 29 54°F 52°F1018.1 hPa
46022 - EEL RIVER - 17NM West-Southwest of Eureka, CA 31 mi81 min S 21 G 27 54°F 53°F9 ft1016.9 hPa (-1.1)48°F
CECC1 - 9419750 - Crescent City, CA 47 mi41 min SSE 12 G 16 51°F 51°F1016.3 hPa

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 mi78 minSSE 1210.00 miOvercast57°F43°F60%1018.2 hPa

Wind History from ACV (wind in knots)
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Last 24hrE4E4CalmSE5E4E4CalmE4SE4E5E63SE11
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1 day agoE4SE3E3CalmCalmCalmCalmE4CalmE3Calm5CalmCalmW5NW6NW7NW9NW8N3SE3E6SE5E6
2 days agoCalmSE6SE7SE8SE7SE11SE13
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S7S9W7E5

Tide / Current Tables for Trinidad Harbor, California
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Trinidad Harbor
Click for Map
Wed -- 12:08 AM PST     Moonset
Wed -- 04:34 AM PST     6.56 feet High Tide
Wed -- 07:33 AM PST     Sunrise
Wed -- 11:12 AM PST     2.13 feet Low Tide
Wed -- 11:45 AM PST     Moonrise
Wed -- 02:20 PM PST     First Quarter
Wed -- 04:57 PM PST     4.83 feet High Tide
Wed -- 05:23 PM PST     Sunset
Wed -- 10:38 PM PST     2.20 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.83.955.96.56.565.24.23.22.52.12.32.83.54.24.74.84.64.13.42.72.32.2

Tide / Current Tables for Mad River Slough, Arcata Bay, Humboldt Bay, California
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Mad River Slough
Click for Map
Wed -- 12:08 AM PST     Moonset
Wed -- 05:29 AM PST     7.48 feet High Tide
Wed -- 07:33 AM PST     Sunrise
Wed -- 11:45 AM PST     Moonrise
Wed -- 11:50 AM PST     2.25 feet Low Tide
Wed -- 02:20 PM PST     First Quarter
Wed -- 05:24 PM PST     Sunset
Wed -- 05:47 PM PST     5.49 feet High Tide
Wed -- 11:17 PM PST     2.23 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.33.44.766.97.47.46.75.64.43.22.52.32.63.34.24.95.45.55.14.33.42.62.3

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 (0,6,7,8)
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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.