Wednesday, December12, 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 7:30AMSunset 4:50PM Tuesday December 11, 2018 10:59 PM PST (06:59 UTC) Moonrise 10:54AMMoonset 8:56PM Illumination 22% Phase: Waxing Crescent; Moon at 5 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- 840 Pm Pst Tue Dec 11 2018
.small craft advisory in effect from 6 am pst Wednesday through Thursday evening...
Tonight..N winds 10 to 15 kt. Waves W 9 ft at 12 seconds. Chance of rain.
Wed..N winds 5 to 15 kt. Waves nw 15 ft at 14 seconds.
Wed night..E winds 5 to 10 kt. Waves nw 15 ft at 15 seconds.
Thu..S winds 5 to 10 kt. Waves nw 12 ft at 16 seconds.
Thu night..S winds 10 to 20 kt. Waves sw 5 ft at 7 seconds... And nw 12 ft at 16 seconds.
Fri..SW winds 5 to 15 kt. Waves W 3 ft at 5 seconds...and W 19 ft at 16 seconds.
Sat..SE winds 15 to 25 kt. Waves W 5 ft at 8 seconds...and W 10 ft at 14 seconds.
Sun..S winds 10 to 20 kt. Waves W 5 ft at 8 seconds...and nw 12 ft at 19 seconds.
PZZ400 840 Pm Pst Tue Dec 11 2018
Synopsis for northern california waters..Another series of significant west to northwesterly swells will enter the waters periodically from tonight through the weekend. Winds and short period seas will increase late in the week ahead of an approaching system.


7 Day Forecast for Marine Location Near Trinidad, 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 112240
afdeka
area forecast discussion
national weather service eureka ca
240 pm pst Tue dec 11 2018

Synopsis A weak system will bring some light rain to the area
this evening and overnight. Wednesday and Thursday will see dry
weather. The next system bringing rain and mountain snow is
expected Friday with additional systems on Sunday and Tuesday.

Discussion Currently a weak frontal boundary is bringing some
light rain to del norte and humboldt counties. This will continue
to spread south across the area this evening and overnight.

Rainfall amounts will generally be light, totals are expected to
range from 0.5 inches in the del norte norte mountains to a few
hundredths in southern mendocino county and eastern humboldt
county. The humbodlt bay area is expected to see around 0.15
inches.

Wednesday high pressure is expected to build into the area.

Coastal areas will likely be clear fairly early, but inland areas
may be slow to clear. Wednesday night will be the coldest night,
although it is hard to say at this point if we will see frost in
the coastal areas. There may be too much lingering moisture. There
is also a weak system moving by to the north of the area that may
bring some high clouds to the area. These could linger into
Thursday.

Thursday night the next cold front starts to approach the area.

This will increase southerly winds and they are expected to peak
Friday morning. There are still some timing differences in the
models, the 12z ECMWF has the front keeping the rain offshore
until late morning, while the NAM and the GFS bring it onshore in
the north early in the morning. Have trended the forecast towards
a slightly slower solution, but confidence is low on the exact
timing. Snow levels are expected to range from 4,000 to 4,500 feet
in eastern trinity county. This will likely impact the scott
mountain pass on highway 3. Winds are expected to stronger with
this system, gusts around 45 mph are expected on the ridges. A
wind advisory may be needed, but for now it looks borderline.

Saturday is looking fairly dry in the morning, but a weak warm
frontal boundary could bring some light misty rains to the area in
the afternoon. Saturday night and Sunday morning there may be
some periods of rain ahead of the next cold front. Currently the
gfs and ECMWF show the heaviest rain moving into the area Sunday
afternoon as the cold front moves through. The models are both
showing this system moving through quickly making river flooding
not too likely. Some small stream or urban area flooding is
possible due to the heavy rainfall rates. Winds are expected to
be strong with this system, but models are still struggling with
the exact track of the low pressure offshore.

With several inches of snow.

Next week the models are divided on how far south the system
brings rainfall. The ECMWF brings a significant amount of rainfall
into the area while the 18z GFS keeps it just north of the border
in oregon. This will need to be watched as it gets closer. Mkk

Aviation MainlyVFR conditions are expected to prevail across all
terminals through tonight, though rain has already started to move
in at the coast and impact the coastal terminals. Overall, rainfall
is expected to be light to moderate, but a heavier shower cannot be
ruled out. Additionally, MVFR to ifr conditions may occur with any
heavier showers that pass over the terminals. Low-level wind shear
will be possible at kcec this afternoon and evening as the front
arrives, but the other terminals are expected to experience only
marginal low-level wind shear.

Marine Seas will build tonight as another westerly swell moves
through the coastal waters, with seas peaking early Thursday
morning. Small craft advisories are in place for each coastal zone
and tried to be timed to begin as the westerly swell moves through
the waters. Northerly winds will develop behind the front tonight
and into Wednesday, then shift to southerly early on Thursday as
another system is set to approach on Friday. Seas will gradually
wane through the day on Thursday as a west to northwest swell begins
to move through the waters early Friday morning. Southerly winds
will increase first over the outer waters Thursday and move into the
inner waters by Friday. As a result, short period southerly wind
waves will build across the coastal waters through Friday. Combined
seas will climb over 20 feet in the outer waters during the day on
Friday. Otherwise, yet another westerly swell will move through the
coastal waters Saturday night and into Sunday, with seas forecast to
peak around 23 feet Sunday night.

Eka watches warnings advisories
Ca... None.

Northwest california coastal waters...

small craft advisory from 6 am Wednesday to 9 pm pst
Thursday for pzz450.

Small craft advisory from midnight tonight to 9 pm pst Thursday
for pzz470-475.

Small craft advisory from noon Wednesday to 9 pm pst Thursday
for pzz455.

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 16 mi60 min 56°F8 ft
HBYC1 - 9418767 - North Spit, CA 21 mi84 min N 9.9 G 15 54°F 53°F1024 hPa
46022 - EEL RIVER - 17NM West-Southwest of Eureka, CA 31 mi40 min NNW 14 G 18 54°F1025.3 hPa
CECC1 - 9419750 - Crescent City, CA 47 mi54 min N 1.9 G 2.9 51°F 53°F1024.3 hPa

Wind History for North Spit, Humboldt Bay, CA
(wind in knots)    EDIT      (on/off)   Help
11
PM
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
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
Last
24hr
SE3
E2
SE2
SE3
S1
SE2
E6
SE6
SE5
G8
S1
SE3
SE3
SE3
S6
S8
S8
S6
S10
S13
G16
S11
S12
S13
NW6
G9
NW16
1 day
ago
SE6
SE4
E2
--
N3
N9
NE6
NE3
NE5
NE6
NE4
N5
NE5
NE7
N14
N12
N14
N11
G14
N13
N12
NE11
N7
E3
SE6
2 days
ago
S13
G17
S15
SE12
G17
SE13
G22
SE22
G27
SE20
S24
S22
G27
S22
G27
S17
G21
S14
G20
S11
G15
S12
SW11
G16
NW1
SE2
S1
S2

Airport Reports
    EDIT      (on/off)   Help   Click EDIT to display multiple airports
AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Arcata / Eureka, Arcata Airport, CA5 mi67 minN 810.00 miOvercast53°F51°F93%1024.5 hPa

Wind History from ACV (wind in knots)
12
AM
1
AM
2
AM
3
AM
4
AM
5
AM
6
AM
7
AM
8
AM
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
Last 24hrE3CalmE4E3E3E4E4E6E3CalmE5E5E4S5S5SE3SE6SE5S5S5S9W3N8N4
1 day agoCalmCalmN3CalmCalmCalmCalmE4CalmCalmCalmNW8NW7NW11NW10NW10NW11N5E3E3CalmCalmE3E4
2 days agoE3CalmSE3SE3SE5SE3SE4SE6SE8S11SE12
G20
SE11
G21
SE8SE8S6CalmN3N5CalmCalmW4CalmCalmCalm

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
Wed -- 03:29 AM PST     5.71 feet High Tide
Wed -- 07:32 AM PST     Sunrise
Wed -- 08:38 AM PST     3.76 feet Low Tide
Wed -- 11:29 AM PST     Moonrise
Wed -- 02:02 PM PST     5.94 feet High Tide
Wed -- 04:48 PM PST     Sunset
Wed -- 09:09 PM PST     0.60 feet Low Tide
Wed -- 09:53 PM PST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
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
3.14.35.25.75.75.34.74.23.83.84.14.65.25.75.95.75.14.12.91.810.60.81.5

Tide / Current Tables for Arcata Wharf, Humboldt Bay, California
   EDIT      (on/off)   Help   One Week of Data
Arcata Wharf
Click for Map
Wed -- 04:38 AM PST     5.61 feet High Tide
Wed -- 07:31 AM PST     Sunrise
Wed -- 09:39 AM PST     3.63 feet Low Tide
Wed -- 11:28 AM PST     Moonrise
Wed -- 02:58 PM PST     6.17 feet High Tide
Wed -- 04:48 PM PST     Sunset
Wed -- 09:54 PM PST     Moonset
Wed -- 10:19 PM PST     0.30 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

12
am
1
am
2
am
3
am
4
am
5
am
6
am
7
am
8
am
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
1.62.94.155.55.65.34.74.13.73.744.75.466.25.95.34.331.80.80.30.4

Weather Map and Satellite Images
       (on/off)   HelpWeather Map
wmap_P
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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Eureka, CA (1,6,7,8)
      (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.