Thursday, September19, 2019 L-36.com


Marine Weather and Tides
Trinidad, CA

Version 3.4
NOTICE
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.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 6:59AMSunset 7:20PM Thursday September 19, 2019 11:44 AM PDT (18:44 UTC) Moonrise 9:30PMMoonset 11:13AM Illumination 69% Phase: Waning Gibbous; Moon at 20 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 Am Pdt Thu Sep 19 2019
.small craft advisory in effect from 2 pm pdt this afternoon through late tonight...
Today..N winds 5 to 15 kt...increasing to 15 to 25 kt this afternoon. Gusts up to 30 kt. Waves nw 9 ft at 9 seconds.
Tonight..N winds 15 to 25 kt. Waves N 9 ft at 7 seconds.
Fri..N winds 10 to 20 kt. Waves N 7 ft at 7 seconds.
Fri night..N winds 10 to 20 kt. Waves N 7 ft at 7 seconds.
Sat..N winds 5 to 15 kt. Waves N 5 ft at 6 seconds...and nw 4 ft at 13 seconds.
Sun..NW winds 5 to 15 kt. Waves nw 7 ft at 9 seconds.
Mon..N winds 15 to 25 kt. Waves N 8 ft at 8 seconds...and nw 5 ft at 15 seconds.
PZZ400 832 Am Pdt Thu Sep 19 2019
Synopsis for northern california waters..Northerly winds and steeper waves will increase today as a low pressure trough moves into the great basin. Northerly winds and seas will ease up slightly over the weekend, primarily north of cape mendocino. Conditions are expected to deteriorate again after another trough passage late on Sunday and into Monday.


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 191101
afdeka
area forecast discussion
national weather service eureka ca
401 am pdt Thu sep 19 2019

Synopsis A warming and drying trend will begin today and continue
into the weekend. The next chance for rain will be Sunday across del
norte and northern humboldt county.

Discussion Rain showers have come to an end across northwest
california this morning as a deep upper level trough exits into the
great basin, leaving the north coast in broad northerly flow between
the departing trough and a stout ridge over the eastern pacific.

Skies have begun to clear out across the area, which has lead to
patchy ground fog development aided by ample residual low level
moisture stemming from the rainfall of the past few days.

Temperatures can be expected to run several degrees warmer across
the area today given more abundant sunshine and warming
temperatures aloft, however the warming trend will really begin to
ramp up on Friday as high pressure begins to build into the
region from the pacific. This will support generally warm and dry
conditions through Saturday night before the next trough and an
associated cold front approach the region on Sunday. This trough
should be a bit weaker than the systems of the past few days, with
rainfall looking to remain lighter and mainly confined to areas
from humboldt bay north to the or border. This will also
temporarily halt the warming trend before another ridge builds in
for the beginning of next week. Cb

Aviation An upper level trough is exiting the region while
increasing subsidence behind the trough will result in improving
conditions through the day. However areas of shallow moist air will
likely result in ifr lifr conditions around the coast and for the
interior valleys early this morning. Conditions should improve
across the board later today in response to a drier brisk n-nw
flow and daytime mixing.

Marine Northerly winds and steeper waves will increase today
as a low pressure trough moves into the great basin. Also, a mid
period NW swell near 10 ft will decay today. Small craft advisories
are in effect for all waters. Northerly winds and seas will ease up
slightly over the weekend, primarily north of CAPE mendocino, as
another trough moves toward the pacnw. Conditions will deteriorate
again after trough passage late Sunday into Monday.

Eka watches warnings advisories
Ca... None.

Northwest california coastal waters... Small craft advisory from 2
pm this afternoon to 3 am pdt Friday for pzz450-455.

Small craft advisory until 9 pm pdt Friday for pzz470.

Small craft advisory until 9 pm pdt Saturday for pzz475.

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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 mi44 min 63°F9 ft
HBYC1 - 9418767 - North Spit, CA 21 mi68 min 60°F1018 hPa
46022 - EEL RIVER - 17NM West-Southwest of Eureka, CA 32 mi44 min N 9.7 G 14 58°F1018.4 hPa (+0.6)
CECC1 - 9419750 - Crescent City, CA 47 mi68 min N 8 G 13 63°F 60°F1017.9 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 mi1.9 hrsNW 54.00 miFog/Mist60°F55°F86%1017.8 hPa

Link to 5 minute data for KACV

Wind History from ACV (wind in knots)
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Last 24hrSW9SW6W4S4SE6NE7E4S3S4NE5CalmCalmCalmCalmE3E3CalmE5CalmCalmCalmCalmNW5NW7
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S7SE10SE5CalmS6SE3CalmSE4SE3CalmS3SE3SE4S4SE4S6S7S7SW10
2 days agoSW8SW9SW10SW10SW10W8SW5SW5CalmE4E3E3SE4SE5SE3SE4SE6SE5SE6SE5SE7SE7SE7S7

Tide / Current Tables for Trinidad Harbor, California
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Trinidad Harbor
Click for Map
Thu -- 03:36 AM PDT     5.15 feet High Tide
Thu -- 07:00 AM PDT     Sunrise
Thu -- 09:08 AM PDT     2.43 feet Low Tide
Thu -- 12:12 PM PDT     Moonset
Thu -- 03:17 PM PDT     6.16 feet High Tide
Thu -- 07:19 PM PDT     Sunset
Thu -- 10:10 PM PDT     1.00 feet Low Tide
Thu -- 10:29 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.73.74.65.15.14.74.13.32.72.42.63.2455.86.165.44.43.32.21.311.2

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
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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 (14,3,4,5)
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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.