Thursday, December13, 2018 L-36.com


Marine Weather and Tides
Scotia, 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 7:31AMSunset 4:51PM Thursday December 13, 2018 12:07 AM PST (08:07 UTC) Moonrise 12:00PMMoonset 10:53PM Illumination 32% Phase: Waxing Crescent; Moon at 6 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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PZZ410 730 pm pdt Tue mar 13 2018 a marine weather statement has been issued for the following areas... Coastal waters from pt. St. George to cape mendocino ca out 10 nm... Humboldt bay bar... At 729 pm pdt, doppler radar indicated a shower, capable of producing winds to around 30 knots. This shower was located 9 nm north of cape mendocino, moving northeast at 20 knots. Precautionary/preparedness actions... Water spouts are possible along with stronger Thunderstorms...locally higher waves...and lightning strikes. Boaters should seek safe harbor immediately until these storms pass. Mariners can expect gusty winds to around 30 knots...locally higher waves...and lightning strikes. Boaters should seek safe harbor immediately until this storm passes. && lat...lon 4080 12411 4080 12418 4075 12419 4073 12423 4070 12421 4068 12422 4070 12427 4071 12427 4065 12431 4063 12429 4063 12424 4062 12426 4063 12432 4047 12439 4057 12459 4095 12437 4086 12417 4076 12423 4085 12416 4082 12409
PZZ400 827 Pm Pst Wed Dec 12 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 frontal system.


7 Day Forecast for Marine Location Near Scotia, CA
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location: 40.25, -124.37     debug


Area Discussion for - Eureka, CA
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Fxus66 keka 122231
afdeka
area forecast discussion
national weather service eureka ca
231 pm pst Wed dec 12 2018

Synopsis High pressure building across northern california
will bring dry weather and some sunshine through Thursday. A cold
front will bring a quick shot of rain, gusty winds, and modest
mountain snows on Friday. Another cold front will pass through on
Sunday.

Discussion Skies were partly to mostly sunny today across most
of the area. Mid and high clouds are presently streaming in from
the NW across the N half of the area. These will continue
overnight with some thin spots from time to time. Frost is
expected to develop over portions of the interior, but little to
no frost is currently expected in the zones which have not had
their growing seasons ended (101, 103, 109 and 112). The oncoming
shift will continue to monitor through the evening.

Mid and high clouds should thin on Thursday, leading to another
day with partly to mostly sunny skies and mild temperatures. S
winds will begin to increase during the evening hours, and clouds
will begin to thicken and lower ahead of the next storm system.

Winds will become quite gusty late Thursday night and early
Friday, especially over the N half of our area. Wind speeds will
flirt with advisory criteria at higher elevations and coastal
headlands, but, at this time, a wind advisory is not anticipated.

This storm system will be progressive, with rainfall totals
expected to range from near one inch in the N mountains to just
over a quarter of an inch over the extreme southern coastal areas.

Coastal downsloping is expected to limit rainfall amounts a bit
along the coast, particularly along the redwood coast. This will
also likely delay the start time of the significant precipitation
in those area. Snow amounts in the highest elevations of N trinity
county will likely approach 6 inches, but this should be away from
major thoroughfares.

After a mostly dry day on Saturday, another fast-moving storm
system will transit the area on Sunday. Integrated moisture
transport (ivt) with this system is more impressive, but, again,
the progressive nature should keep localized flooding potential
low. There is the potential for a bit more convective
precipitation over the S zones with this storm, so will need to
evaluate the potential for burn scar issues as we get closer to
the event. However, amounts of 2 to 4 inches are possible at scott
mountain summit.

Another storm system may affect the area on Tuesday of next week,
but indications are that this feature will mainly affect the
pacific nw. Sec

Aviation Mid to high clouds were observed in visible satellite
imagery moving over the area early this afternoon. MainlyVFR
conditions are expected to prevail across all terminals with weak
high pressure over the area. Inland valley fog will be possible
tonight, along with some patchy fog at the coast. Confidence is low
that any fog will impact the terminals, but some statistical
guidance does indicate a period of ifr conditions are possible
tonight at kacv.

Marine The mid-period northwest swell will peak this afternoon
and slowly subside through late on Thursday as another northwest
swell begins to move through the coastal waters early on Friday and
persist through the weekend. Seas will not come down much before the
second swell begins to move through the coastal waters, so the small
craft advisories have been extended and will likely need to be
extended. A frontal system will move over the coastal waters late on
Thursday, bringing with it gusty southerly winds. The gale watch has
been upgraded to a gale warning for the northern outer waters
through Friday afternoon until the front moves farther east to allow
the gusty conditions to subside. Additionally, a gale watch has been
issued for the northern inner waters. Winds are forecast to quickly
diminish Friday afternoon, with a switch to westerly expected Friday
night. Another system will move across the area on Sunday, with
combined seas expected to reach around 25 feet. As a result, gusty
southerlies will impact the coastal waters beginning late Saturday
night.

Beach hazards A long period westerly swell will build around 20
to 25 feet, which will likely bring high surf to area beaches Sunday
through Monday afternoon. A high surf advisory or warning will
likely be issued as we near the event. People planning any beach
activities should exercise caution and stay farther back from the
surf and off of jetties.

Eka watches warnings advisories
Ca... None.

Northwest california coastal waters...

gale watch from late Thursday night through Friday morning
for pzz450.

Small craft advisory until 4 am Friday for pzz450.

Small craft advisory until 9 pm Thursday for pzz470.

Gale warning from 9 pm Thursday to 3 pm Friday for pzz470.

Small craft advisory until 3 pm Friday for pzz455-475.

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46213 - Cape Mendocino, CA (094) 19 mi37 min 54°F16 ft
46022 - EEL RIVER - 17NM West-Southwest of Eureka, CA 34 mi27 min ESE 5.8 G 12 54°F1027.4 hPa
HBYC1 - 9418767 - North Spit, CA 37 mi91 min ESE 5.1 G 7 45°F 53°F1027.2 hPa
46244 - Humboldt Bay, North Spit, CA 45 mi37 min 56°F17 ft

Wind History for North Spit, Humboldt Bay, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Fortuna Rohnerville Airport, CA24 mi72 minSSE 70.15 miOvercast41°F41°F100%1027.1 hPa

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Last 24hrNW7N9N5NW4CalmSW5SE5S6CalmS5S5W4NW9NW7W5W3E3SE6CalmCalmSE5SE7SE8SE7
1 day agoSE3SE3SE5E6SE7SE7SE7SE11SE11SE10SE9SE9SE6SE5SE5SE12SE11SE10SE4SE7SE6NW4NW7W6
2 days agoCalmSW4CalmCalmCalmCalmCalmW3NW4W3NW4NW8NW8NW6NW9NW8NW8NW6NW6CalmW4NW3CalmCalm

Tide / Current Tables for Cape Mendocino, California
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Cape Mendocino
Click for Map
Thu -- 04:03 AM PST     4.67 feet High Tide
Thu -- 07:32 AM PST     Sunrise
Thu -- 09:50 AM PST     3.19 feet Low Tide
Thu -- 12:00 PM PST     Moonrise
Thu -- 02:27 PM PST     4.48 feet High Tide
Thu -- 04:51 PM PST     Sunset
Thu -- 09:42 PM PST     0.55 feet Low Tide
Thu -- 10:53 PM PST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.133.94.54.74.64.33.93.53.33.23.43.74.14.44.44.13.52.61.81.10.60.60.9

Tide / Current Tables for Punta Gorda, California Current
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Punta Gorda
Click for Map
Thu -- 12:59 AM PST     0.86 knots Max Flood
Thu -- 04:31 AM PST     -0.00 knots Slack
Thu -- 06:42 AM PST     -0.58 knots Max Ebb
Thu -- 07:31 AM PST     Sunrise
Thu -- 10:28 AM PST     0.00 knots Slack
Thu -- 12:00 PM PST     Moonrise
Thu -- 12:51 PM PST     0.44 knots Max Flood
Thu -- 03:28 PM PST     -0.00 knots Slack
Thu -- 04:51 PM PST     Sunset
Thu -- 06:45 PM PST     -0.99 knots Max Ebb
Thu -- 10:40 PM PST     0.00 knots Slack
Thu -- 10:53 PM PST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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0.80.90.80.60.2-0.2-0.5-0.6-0.4-0.3-0.10.10.40.40.30.1-0.2-0.6-0.9-1-0.8-0.5-0.20.1

Weather Map and Satellite Images
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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.
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Wind Forecast for Eureka, CA (3,6,7,8)
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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 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.