Monday, April23, 2018 L-36.com


Marine Weather and Tides
Eureka, CA

Version 3.4
What's New / NOTES
3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.
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.

Sunrise 6:22AMSunset 8:06PM Monday April 23, 2018 7:51 PM PDT (02:51 UTC) Moonrise 12:25PMMoonset 2:03AM Illumination 63% Phase: Waxing Gibbous; Moon at 9 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 245 Pm Pdt Mon Apr 23 2018
Synopsis for northern california waters..N winds and seas will continue to subside through midweek. Winds will shift to the S for the second half of the work week while seas hold between 3 to 5 ft.

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 232155
afdeka
area forecast discussion
national weather service eureka ca
255 pm pdt Mon apr 23 2018

Synopsis High pressure will maintain partly cloudy skies and
dry conditions through the middle of the week with temperatures
above normal in the inland areas. Late week and for the weekend
an upper level low approaching the area will bring cooler
temperatures and the chance for showers.

Discussion High pressure remains in place across the area today
for a continuation of mostly clear skies and dry conditions.

Coastal areas will begin to see more onshore flow and marine layer
influence as an upper level low starts to approach the area. This
will cool temperatures at the coast and it may spread inland to
the near coastal areas. Wednesday the marine layer will likely be
slightly deeper and the stratus will be a bit more persistent.

Inland temperatures will remain nearly steady through Wednesday.

But a reduction in afternoon high temperatures will be felt
beginning Thursday. Toward Friday and into the weekend the models
start to diverge with their solutions. The ECMWF keeps the low
just off the coast on Friday and moves it onshore on Saturday. The
canadian is similar, but the GFS quickly ejects the low out of
the area and moves an open trough over the area for the weekend.

Both of these solutions will keep the high temperatures below
normal and there will be showers around. The GFS came around with
better convective parameters (cape tt's)to support the addition
of thunderstorms to the forecast for Friday and Sunday as well.

Beyond next weekend solutions range from a strong ridge (the
canadian), a weak ridge (the ecmwf) and a deep trough (the gfs).

Confidence is low on any particular solution, but a ridge building
back in has been a more consistent solution. Mkk jt

Aviation A ridge of high pressure... Plus inland heat troughing... Resulted in
predominantlyVFR conditions under mostly warm temperatures and sunny
skies today. However, a few pockets of patchy morning ifr fog was
briefly reported at cec, and a couple of reports of haze at both acv
and cec this morning. Overnight and Tuesday morning... Concur with
previous discussion: high resolution model data indicates little low
cloud formation over land during the next 24 hours with a low
confidence of some scattered to broken clouds around the eel river
delta and offshore mendocino county (adding north coast). Winds will
be light.

Marine N winds continue to slowly weaken and as a result,
the steep seas will continue to subside. Wave heights have primarily
fallen below small craft advisory criteria. Conditions will continue
a gradual improving trend through mid-week with winds shifting to
light southerly by week's end. NW swell trains will continue to
traverse the area through the period.

Eka watches warnings advisories
Ca... None.

Northwest california coastal waters... Small craft advisory until 4 pm pdt this afternoon 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 mi75 min N 2.9 G 2.9 58°F 52°F1014.9 hPa
46244 - Humboldt Bay, North Spit, CA 13 mi51 min 54°F7 ft
46022 - EEL RIVER - 17NM West-Southwest of Eureka, CA 22 mi61 min Calm G 1.9 56°F 56°F6 ft1014.1 hPa (-1.2)51°F
46213 - Cape Mendocino, CA (094) 47 mi59 min 53°F7 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 mi58 minSSW 310.00 miFair67°F52°F59%1014.9 hPa
Fortuna Rohnerville Airport, CA18 mi76 minNW 310.00 miFair64°F53°F68%1014.9 hPa

Wind History from ACV (wind in knots)
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Last 24hrNW7SE3S3S7SE5SE4CalmE3CalmCalmE3E3CalmCalmNW43Calm3W6SW5SW6SW6CalmSW3
1 day agoN7N6CalmCalmE4SE4SE4E4E5E3CalmE4E3E345W6NW17
G23
N14NW19NW20NW12NW13NW9
2 days agoNW10N6N5N6N5N4CalmN5NE3CalmE4CalmCalmNW3NW12NW16NW14NW20NW17
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NW17N14NW18NW11

Tide / Current Tables for Eureka Slough Bridge, Humboldt Bay, California
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Eureka Slough Bridge
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Mon -- 12:35 AM PDT     2.99 feet Low Tide
Mon -- 03:03 AM PDT     Moonset
Mon -- 06:25 AM PDT     Sunrise
Mon -- 06:45 AM PDT     6.58 feet High Tide
Mon -- 01:25 PM PDT     Moonrise
Mon -- 01:31 PM PDT     -0.29 feet Low Tide
Mon -- 08:04 PM PDT     Sunset
Mon -- 08:46 PM PDT     5.86 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.133.54.25.15.96.46.66.153.51.90.6-0.2-0.20.41.42.73.955.75.85.44.7

Tide / Current Tables for Fields Landing, Humboldt Bay, California
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Fields Landing
Click for Map
Mon -- 12:20 AM PDT     2.91 feet Low Tide
Mon -- 03:03 AM PDT     Moonset
Mon -- 06:11 AM PDT     6.03 feet High Tide
Mon -- 06:26 AM PDT     Sunrise
Mon -- 01:16 PM PDT     -0.28 feet Low Tide
Mon -- 01:25 PM PDT     Moonrise
Mon -- 08:04 PM PDT     Sunset
Mon -- 08:12 PM PDT     5.37 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.933.54.35.15.765.95.142.61.30.3-0.3-0.10.61.72.94.155.45.24.74

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 (22,6,7,8)
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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.