Sunday, May31, 2020
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Marine Weather and Tides
Trinidad, CA

Version 3.4
NOTICE
12/16/2019 NOAA is having trouble with requests that include wind gusts. I am posting graphs without wind gusts until it gets fixed.
10/9/2019 Updated the Marine Zones.
9/4/2019 Fixed the weather maps due to NOAA moving them.
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.

Sunrise 5:45AMSunset 8:43PM Sunday May 31, 2020 8:18 AM PDT (15:18 UTC) Moonrise 1:51PMMoonset 1:57AM Illumination 71% Phase: Waxing Gibbous; Moon at 9 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- 251 Am Pdt Sun May 31 2020
Today..N winds 5 to 15 kt. Waves N 6 ft at 6 seconds...and sw 2 ft at 15 seconds.
Tonight..N winds 5 to 15 kt. Waves N 6 ft at 7 seconds...and S 2 ft at 15 seconds.
Mon..N winds 10 to 20 kt. Waves N 7 ft at 7 seconds.
Mon night..N winds 10 to 20 kt. Waves N 8 ft at 8 seconds.
Tue..N winds 10 to 20 kt. Waves N 7 ft at 7 seconds.
Wed..N winds 10 to 15 kt. Waves N 6 ft at 7 seconds...and nw 3 ft at 15 seconds.
Thu..N winds 10 to 15 kt. Waves N 7 ft at 7 seconds...and nw 5 ft at 13 seconds.
PZZ400 251 Am Pdt Sun May 31 2020
Synopsis for northern california waters..Northerlies will continue to redevelop over the coastal zones through this evening. Northerly winds and steeper, short-period seas will increase on Sunday and into next week. Otherwise, a mid-period northwest swell will continue to slowly diminish through early next week and a longer-period southwest swell will linger throughout portions of the waters over the next several days.


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


Area Discussion for - Eureka, CA
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FXUS66 KEKA 311225 AFDEKA

AREA FORECAST DISCUSSION National Weather Service Eureka CA 525 AM PDT Sun May 31 2020

SYNOPSIS. Isolated showers will possible over the interior mountains today through Monday. Otherwise, dry weather is expected through much of next week. Interior temperatures will steadily warm through mid week. Coastal areas will generally remain in the lower to mid 60s as northerly breezes return.

DISCUSSION. A splitting upper trough offshore will bring a potential for showers to the interior mountains today through Monday. High resolution models indicate weak instability developing with daytime heating over South Fork Mountain, the Yolla Bolly Mountains and Trinty Alps. CAPE values will generally remain under 100/J/kg with equilibrium levels below 15kft. The last several runs of the HRRR has been indicating weak convection developing late in the day over Trinity county. Upslope S-SW flow coupled with an approaching 500mb trough may result in a few CG strikes nearby or over the Trinity Alps this evening. SREF and HREF thunder probabilities were near 0%, so confidence in the HRRR simulated convection is quite low. More interior showers will be possible on Monday as a mid level deformation zone develops over northern California by afternoon. A stable mid layer may once again suppress deep convection.

High pressure over the NE Pacific, both at the surface and aloft, will build toward the NRN California coast on Tue and remain in firm control through much of next week. Temperatures in the interior will warm through at least Wed in response to the large scale subsidence. Brisk northerly winds offshore and a thermal trough near the NW CA coast should break up the stratus each day.

Deterministic models and ensemble clusters continue to indicate another upper trough impacting the area late in the week and next weekend. The magnitude of the cooling and extent/duration/timing of shower activity are still highly uncertain. The highest precip chances and greatest amounts will likely be in the northern most counties; Del Norte, Humboldt and Trinity.

AVIATION. A mixed bag of Cig layers and meandering marine stratus created widely varying flight categories at the coastal terminals. The late evening and early morning hours began with widespread LIFR Cigs, but a transitional trend to MVFR and VFR categories is ongoing. Some light offshore breezes potentially contributed to the scouring of the marine stratus. Enhanced satellite imagery continues to reveal weakening in depth and coverage of the stratus layer. Brief periods of lower CIGS are still occurring in the early morning hours as variable surface winds continue to redistribute the stratus coverage. Clearing to VFR expected today by late morning with high and some mid-level clouds streaming in. KUKI has some stratus intruding the valley to MVFR Cigs, but this is expected to scatter out later this morning as well.

MARINE. Northerly winds are currently on the increase, to around 15 to 25 knots by midday across the outer waters and around Cape Mendocino and Point Saint George. Small craft advisories have been hoisted for all outer waters to account for the winds and subsequent short-period seas. Winds will remain elevated through most of the upcoming week over these areas. The short-period seas look to partially penetrate the fringes of the inner waters on Monday, but the coverage and duration did not warrant SCA at this time. However, the forecast will be closely monitored for the inner waters. A mid- period northwest swell will continue to slowly diminish through early next week and a longer-period southwest swell will linger throughout portions of the waters over the next several days

EKA WATCHES/WARNINGS/ADVISORIES. CA . None. NORTHWEST CALIFORNIA COASTAL WATERS . Small Craft Advisory from noon today to 3 AM PDT Friday for PZZ470-475.



Visit us at https://www.weather.gov/eureka

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For forecast zone information see the forecast zone map online: https://www.weather.gov/images/eka/zonemap.png


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46244 - Humboldt Bay, North Spit, CA 16 mi49 min 54°F5 ft
HBYC1 - 9418767 - North Spit, CA 21 mi49 min 50°F1017 hPa
NJLC1 21 mi85 min Calm G 1.9 52°F
46022 - EEL RIVER - 17NM West-Southwest of Eureka, CA 33 mi39 min NE 5.8 G 7.8 53°F 52°F1017.3 hPa50°F
CECC1 - 9419750 - Crescent City, CA 47 mi49 min Calm G 1 51°F 55°F1017.1 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 mi26 minS 410.00 miOvercast52°F52°F100%1017.3 hPa

Link to 5 minute data for KACV

Wind History from ACV (wind in knots)
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Last 24hrSE3CalmCalmS4SW3W4W5W5N5NW4CalmN6E3CalmNW4CalmCalmCalmCalmCalmNW6CalmCalmS4
1 day agoNW3NW4Calm4W65CalmNW9NW10NW10NW4Calm--CalmS3SW5SW5S4S5SW6S8S11S7E6
2 days agoNW6W4CalmW65NW9NW5W7W5NW7NW6NW6SW4SW3S3SE5S5S4S6SE5SE3SE3CalmCalm

Tide / Current Tables for Trinidad Harbor, California
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Trinidad Harbor
Click for Map
Sun -- 01:39 AM PDT     2.08 feet Low Tide
Sun -- 02:57 AM PDT     Moonset
Sun -- 05:46 AM PDT     Sunrise
Sun -- 07:13 AM PDT     4.94 feet High Tide
Sun -- 01:36 PM PDT     0.41 feet Low Tide
Sun -- 02:51 PM PDT     Moonrise
Sun -- 08:20 PM PDT     6.20 feet High Tide
Sun -- 08:42 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.72.22.12.53.13.94.64.94.84.23.22.11.10.50.5123.34.65.66.26.15.44.3

Tide / Current Tables for Arcata Wharf, Humboldt Bay, California
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Arcata Wharf
Click for Map
Sun -- 02:45 AM PDT     2.58 feet Low Tide
Sun -- 02:56 AM PDT     Moonset
Sun -- 05:47 AM PDT     Sunrise
Sun -- 08:15 AM PDT     5.60 feet High Tide
Sun -- 02:45 PM PDT     0.70 feet Low Tide
Sun -- 02:51 PM PDT     Moonrise
Sun -- 08:41 PM PDT     Sunset
Sun -- 09:29 PM PDT     6.97 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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4.33.32.72.633.74.55.25.65.54.93.92.71.60.90.71.22.33.75.16.36.96.96.3

Weather Map
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wmap_P
GEOS 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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Eureka, CA (11,2,3,4)
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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 numerous 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.