Monday, October23, 2017 L-36.com


Marine Weather and Tides
Eureka, CA

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
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.

Sunrise 7:36AMSunset 6:24PM Monday October 23, 2017 5:18 PM PDT (00:18 UTC) Moonrise 10:11AMMoonset 8:15PM Illumination 15% Phase: Waxing Crescent; Moon at 4 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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This is a Weather Statement Zone, please check the Date to see if it has expired
PZZ410 754 Am Pdt Thu Sep 7 2017
.a strong Thunderstorm over the waters... The areas affected include... Coastal waters from pt. St. George to cape mendocino ca out to 50... At 751 am pdt...doppler radar indicated Thunderstorms... Capable of producing local winds to around 30 knots and small hail. These storms are moving to the northwest at 25 knots. These Thunderstorms will continue through at least mid morning. Precautionary/preparedness actions... 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 4174 12417 4160 12410 4114 12416 4104 12412 4077 12423 4076 12423 4081 12418 4081 12417 4069 12422 4071 12426 4065 12431 4063 12428 4062 12426 4061 12433 4045 12441 4052 12578 4178 12499 4178 12426
PZZ400 248 Pm Pdt Mon Oct 23 2017
Synopsis for northern california waters..Light to moderate northerly winds will continue this evening and then diminish tonight. Winds will increase again on Wednesday. A series of northwest swells will propagate through the waters through the week. These swells combined with short period wind waves will maintain elevated and hazardous seas through mid week.

7 Day Forecast for Marine Location Near Eureka, CA
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location: 40.81, -124.14     debug


Area Discussion for - Eureka, CA
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Fxus66 keka 232232
afdeka
area forecast discussion
national weather service eureka ca
332 pm pdt Mon oct 23 2017

Synopsis Dry and very warm weather in store for NW california for
this week. Some areas in mendocino county will see highs getting
into the mid 90s. No precipitation expected this week.

Discussion The forecasted dry and very warm week across nw
california is still on track. As of early afternoon, temperatures
along the coast are in the upper 60s to mid 70s. Temperatures in
inland areas are into the 80s, with hopland seeing temperatures
crossing the 90 degree mark. Temperatures are running about 10 to 20
degrees above normal.

Models are confident about the anomalous warm conditions that nw
california will be seeing. A strong upper level ridge will establish
itself from baja california sur to oregon. Models progged the 500-mb
height of around 595 dm, which is much above normal (around 180 m to
240 m positive anomalies in this case) for this time of year. The
850-mb temperature on Monday is about 19 c, and it is expected to
reach 22 to 23 c on Tuesday. This suggested that most of the areas
will see even warmer conditions than on Monday. The warmest
locations will be in southern mendocino county, with highs in the
low to mid 90s in ukiah, hopland, and potter valley. Trinity county
will be slightly cooler, with highs in the low 80s. Coastal areas
should see temperatures surpassing the 70 degree mark.

There will be some localized area of fog for overnight tonight into
tomorrow morning, especially for humboldt bay, eel river and trinity
river drainage basins. If the fog lingers through the morning, then
it will reduce the amount of daytime heating those places get and
thus slightly cooler daytime temperatures.

The ridge of high pressure will then park itself over the west coast
of north america. This will allow the warm and dry conditions
through the weekend into the weekend. There will be a weak cold
front that makes its way across the area from the north Wednesday
night, and it will not do much other than reinforcing the dry
offshore flow over the area.

Forecast confidence is above average. Changes to the previous
forecast package is minor. Rcl

Aviation Skies have cleared up along the coast this afternoon.

Tonight along the coast some fog is expected once again. Locally
dense areas are possible. This may bring some lifr conditions, but
these may be localized. The offshore flow is expected to keep most
of this away from kcec and kacv, but confidence is low on this.

Skies are expected to clear by mid morning. Mkk

Marine Northwest winds of 10 to 20 kt continue across the area
this afternoon. Models are showing these are expected to slowly
diminish tonight and Tuesday. Models are showing a showing short
period wind driven waves of 4 to 8 feet. The highest waves are
well offshore. Tonight and Tuesday these waves will diminish.

Wednesday models are in decent agreement on winds building back
into the area. Current models show periods of gale force gusts,
but for now this look to be only a fairly brief period on
Wednesday afternoon and evening. So have held off on issuing a
gale watch. Winds will start to diminish again on Thursday and
look to be light on Friday and Saturday.

A northwest swell of around 9 feet at 12 seconds continues to
move across the waters. Another swell around 18 to 20 seconds has
started to move into the waters. The periods will diminish fairly
rapidly on the longer period swell this evening and they will
essentially combine later tonight. This swell will be around 10
feet at 15 seconds. This expected to slowly diminish through the
week to around 4 feet at 12 seconds on Wednesday. Next weekend
another very long period swell is expected to move into the
waters. Models are still struggling with the exact timing and
height, but have been showing it consistently for the last few
model runs. Mkk

Eka watches warnings advisories
Ca... Beach hazards statement until 8 pm pdt this evening for caz101-
103-104-109.

Northwest california coastal waters... Small craft advisory until 3 am pdt Tuesday for pzz450-455.

Small craft advisory until 3 pm pdt Tuesday for pzz470-475.

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
HBYC1 - 9418767 - North Spit, CA 5 mi49 min NNW 4.1 G 5.1 55°F 52°F1026.4 hPa
46244 - Humboldt Bay, North Spit, CA 13 mi58 min 51°F12 ft
46022 - EEL RIVER - 17NM West-Southwest of Eureka, CA 22 mi89 min N 12 G 16 55°F 51°F10 ft1025.8 hPa (-1.9)52°F
46213 - Cape Mendocino, CA (094) 47 mi57 min 56°F11 ft

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, CA13 mi26 minSSW 54.00 miFair with Haze64°F55°F73%1025.5 hPa
Fortuna Rohnerville Airport, CA18 mi44 minNW 710.00 miFair64°F55°F73%1026.1 hPa

Wind History from ACV (wind in knots)
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Last 24hrN4N3CalmSE3CalmCalmCalmCalmCalmNE3NE3CalmS3CalmCalmCalmSW4S5W5S5SW5W6W5SW5
1 day agoSE5SE6SE5SE4SE8SE6SE4SE5SE4SE5SE7SE3SE6SE6SE5SE5SE3SE3S7SW6SW7SW5W4W5
2 days agoCalmE3E3E4SE6SE7SE7SE7SE8SE9SE8SE5SE15
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Tide / Current Tables for Eureka Slough Bridge, Humboldt Bay, California
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Eureka Slough Bridge
Click for Map
Mon -- 03:33 AM PDT     6.06 feet High Tide
Mon -- 07:37 AM PDT     Sunrise
Mon -- 08:33 AM PDT     2.87 feet Low Tide
Mon -- 11:10 AM PDT     Moonrise
Mon -- 02:44 PM PDT     7.17 feet High Tide
Mon -- 06:23 PM PDT     Sunset
Mon -- 09:15 PM PDT     Moonset
Mon -- 09:23 PM PDT     0.14 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
34.35.4665.44.53.632.93.54.45.56.477.16.65.43.92.20.90.20.31

Tide / Current Tables for Fields Landing, Humboldt Bay, California
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Fields Landing
Click for Map
Mon -- 02:59 AM PDT     5.55 feet High Tide
Mon -- 07:37 AM PDT     Sunrise
Mon -- 08:18 AM PDT     2.79 feet Low Tide
Mon -- 11:10 AM PDT     Moonrise
Mon -- 02:10 PM PDT     6.57 feet High Tide
Mon -- 06:24 PM PDT     Sunset
Mon -- 09:08 PM PDT     0.14 feet Low Tide
Mon -- 09:16 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.34.45.35.65.34.73.93.22.82.93.64.55.56.26.66.45.64.42.91.60.60.10.41.2

Weather Map and Satellite Images
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Weather Map
wmap_P
IR Satellite Image from GEOS
west_satellite

GOES Local Image of CentralWestCoast    EDIT
Geos

Wind Forecast for Eureka, CA (20,4,5,8)
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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.