Thursday, April27, 2017 L-36.com


Marine Weather and Tides
Trinidad, 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 6:16AMSunset 8:11PM Thursday April 27, 2017 9:54 AM PDT (16:54 UTC) Moonrise 6:33AMMoonset 8:50PM Illumination 3% Phase: Waxing Crescent; Moon at 2 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
    EDIT      (on/off)   Help
PZZ450 Pt St George To Cape Mendocino Out 10 Nm- 817 Am Pdt Thu Apr 27 2017
.small craft advisory in effect from 6 pm pdt this evening through late Friday night...
Today..NW winds 10 to 15 kt. Waves nw 4 ft at 3 seconds...and W 6 ft at 12 seconds.
Tonight..N winds 10 to 15 kt. Waves N 5 ft at 3 seconds...and W 6 ft at 12 seconds.
Fri..N winds 10 to 20 kt. Waves N 6 ft at 3 seconds...and W 5 ft at 12 seconds.
Fri night..N winds 10 to 20 kt. Waves N 7 ft at 5 seconds... And W 4 ft at 11 seconds.
Sat..N winds 5 to 15 kt. Waves N 4 ft at 7 seconds...and W 3 ft at 11 seconds.
Sun..N winds 10 to 15 kt. Waves nw 5 ft at 3 seconds...and W 4 ft at 10 seconds.
Mon..N winds 10 to 20 kt. Waves N 6 ft at 4 seconds...and nw 4 ft at 11 seconds.
PZZ400 817 Am Pdt Thu Apr 27 2017
Synopsis for northern california waters..Northerly winds will continue to increase today as pressure gradient tightens over the waters. The northerly winds will persist through middle of next week as the east pacific high anchors over the area. As a result a northerly wind wave component will develop. However...a separate westerly swell will remain in our waters as well.

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


Area Discussion for - Eureka, CA
      (on/off)   Help   NOTE: mouseover dotted underlined text for definition
Fxus66 keka 271139
afdeka
area forecast discussion
national weather service eureka ca
439 am pdt Thu apr 27 2017

Synopsis Building high pressure off the west coast will bring
drier weather to the coast and warmer temperatures to the
interior. Spring time northerly winds will be observed along
the coast during the afternoon and early evening periods. The
drier weather is expected to persist into next week.

Discussion Spring like weather finally arriving to northwest
ca as a fairly strong ridge of high pressure builds over the
eastern pacific. The overall trend this weekend into early next
week is for warmer temperatures, dry weather, and even sunny
skies across northwest california. Typical gusty northerly winds
are also expected along the coast during the afternoon and early
evening periods. With 500mb heights reaching near 580dam have
removed the light pops for the weekend and gradually reduced cloud
cover as well. The ridge axis is expected to cross the north
coast early next week and with that some light offshore flow
should also follow. Thus coastal stratus looks less likely.

Aviation Drier weather will lead toVFR conditions across
northwest california today. Models try to hint at lowering ceilings
for coastal terminals for tonight and tomorrow morning. Have kept
vfr conditions in the forecast for the time being as confidence
isn't terribly high in MVFR conditions for the later part of the
forecast period.

Marine Forecast remains on track this morning with high pressure
taking over the forecast. The pressure gradient will be tightening
over the waters for the next couple of days thus wind speeds will be
increasing. 25 to 30 kt gusts will become common by across the
waters by Thursday evening and then persist through the weekend. A
fresh northerly sea component will develop during this time frame
with 3 to 5 second period.

Additionally, there will be a mid period westerly swell that lingers
in our waters.

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

Northwest california coastal waters... Small craft advisory from 6 pm this evening to 3 am pdt Saturday
for pzz450-470.

Small craft advisory until 3 am pdt Saturday for pzz455-475.

Visit us at http://

Weather Reporting Stations
   EDIT       (on/off)   Help   NOTE: Click on distance to see the station location on a map
Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46244 - Humboldt Bay, North Spit, CA 17 mi34 min 54°F7 ft
HBYC1 - 9418767 - North Spit, CA 21 mi79 min NNE 7 G 8.9 49°F 55°F1022.7 hPa
46022 - EEL RIVER - 17NM West-Southwest of Eureka, CA 31 mi65 min N 16 G 18 52°F 53°F7 ft1022.3 hPa (+1.2)45°F
CECC1 - 9419750 - Crescent City, CA 47 mi55 min NNE 6 G 8 51°F 54°F1022.8 hPa

Wind History for North Spit, Humboldt Bay, CA
(wind in knots)    EDIT      (on/off)   Help
9
AM
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
Last
24hr
SW18
SW14
G18
SW13
G17
SW12
G15
W12
NW9
NW10
N19
N18
N18
N18
N16
N17
N18
N19
N17
N17
N15
N15
N14
G17
NE4
NE5
NE4
NE8
1 day
ago
SE7
S8
S12
G16
S18
S15
S14
G18
S12
S11
S13
S15
S12
S9
S5
SE3
SW1
N1
--
W1
SW7
G10
S9
S6
S12
S7
S16
2 days
ago
S12
G16
NW10
W15
SW8
SW6
G9
W9
G12
W6
SW5
W11
W7
NW6
W5
W4
W6
W2
SE3
SW7
G10
S11
S7
SE4
SE5
S6
S3
G6
S5

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Arcata / Eureka, Arcata Airport, CA5 mi62 minN 010.00 miOvercast50°F45°F83%1023.1 hPa

Wind History from ACV (wind in knots)
10
AM
11
AM
12
PM
1
PM
2
PM
3
PM
4
PM
5
PM
6
PM
7
PM
8
PM
9
PM
10
PM
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
9
AM
Last 24hrSW9SW10SW9W5NW7NW9N12N13N12N9N6N6N7N6N3N3NE4E3E5E3E4CalmE3Calm
1 day agoSE3SE9SE10SE7SE8S9S8S7SE7SE5CalmCalmE3CalmCalmE4CalmW3S5S3SE4S5S7S9
2 days agoW8W7W8SW9SW7SW6SW8W5W6NW5CalmS4NE4E5E4SE3SE5SE5SE4SE3SE5SE4CalmSE5

Tide / Current Tables for Trinidad Harbor, California
   EDIT   RT Ports Option   Weekend mode (on/off)   (on/off)   Help   One Week of Data
Trinidad Harbor
Click for Map
Thu -- 12:27 AM PDT     7.32 feet High Tide
Thu -- 06:19 AM PDT     Sunrise
Thu -- 07:08 AM PDT     -1.40 feet Low Tide
Thu -- 07:33 AM PDT     Moonrise
Thu -- 01:31 PM PDT     6.08 feet High Tide
Thu -- 07:06 PM PDT     1.22 feet Low Tide
Thu -- 08:09 PM PDT     Sunset
Thu -- 09:50 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
7.27.26.24.62.60.6-0.8-1.4-10.11.83.65.1665.34.12.71.71.21.52.645.6

Tide / Current Tables for Mad River Slough, Arcata Bay, Humboldt Bay, California
   EDIT      (on/off)   Help   One Week of Data
Mad River Slough
Click for Map
Thu -- 01:21 AM PDT     8.45 feet High Tide
Thu -- 06:19 AM PDT     Sunrise
Thu -- 07:33 AM PDT     Moonrise
Thu -- 07:48 AM PDT     -1.44 feet Low Tide
Thu -- 02:25 PM PDT     6.89 feet High Tide
Thu -- 07:45 PM PDT     1.41 feet Low Tide
Thu -- 08:09 PM PDT     Sunset
Thu -- 09:50 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
7.78.48.2752.70.5-1-1.4-0.70.92.74.666.86.75.84.32.81.71.42.13.65.3

Weather Map and Satellite Images
       (on/off)   Help
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)
      (on/off)   Help

Ground Weather Radar Station Eureka, CA
   (on/off)   Help
weather_mapweather_map weather_map

Ad by Google

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.