Saturday, April21, 2018 L-36.com


Marine Weather and Tides
Samoa, 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 6:25AMSunset 8:04PM Saturday April 21, 2018 8:40 AM PDT (15:40 UTC) Moonrise 10:14AMMoonset 12:19AM Illumination 37% 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 315 Am Pdt Sat Apr 21 2018
Synopsis for northern california waters..Northerly winds will continue through the weekend, increasing to gale force across the outer waters by this afternoon, which will result in large, steep wind waves building. Closer to shore, within 10 nm, some near gale force gusts will be possible around cape mendocino and pt st george. The strong winds and large seas are forecast to persist through Sunday evening.

7 Day Forecast for Marine Location Near Samoa, CA
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location: 40.81, -124.19     debug


Area Discussion for - Eureka, CA
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Fxus66 keka 211133
afdeka
area forecast discussion
national weather service eureka ca
433 am pdt Sat apr 21 2018

Synopsis Above normal high temperatures are expected for the
interior this weekend. Occasional stratus and breezy afternoon
winds will keep temperatures near normal for coastal areas. Mainly
dry weather is expected to continue through most of next week.

Discussion Weak high pressure aloft will continue a slight
warming trend today with inland highs reaching the lower 80s and
another pleasant spring day to the region. The ridge of high
pressure will dominate on Monday and Tuesday as well promoting
a continuation of dry conditions with above normal high
temperatures across inland areas. The coast may see highs in the
60s on Monday with mainly clear skies due to a weak offshore flow
pattern. On Tuesday, the ridge axis will buckle and move east
increasing the potential for longer duration coastal stratus.

Wednesday through Friday, an upper level trough low will approach
130w south of 35n on Wednesday and then meander about offshore
during the latter portion of the week. The models were in general
agreement, but continued to diverge with minor precip generation.

The consensus is for cooling in the interior and an increase in
coastal stratus mid to late next week. There does appear to be a
slight chance for showers and isolated convection, especially for
the interior mountains with daytime heating. The potential for
showers may increase on Friday as the offshore low starts to eject
northeastward toward NW california. Given the uncertainty with
regard to this feature and that it is about a week out... Have
reduced pops a bit and removed any mention of tstorms as both
total totals and CAPE look very low at this time.

Aviation Some patches of low clouds are evident on early morning
satellite pictures, mainly over parts of the eel river valley and
near and inland from fort bragg. A few other patches of clouds are
fading in and out from patrick's point to CAPE mendocino. A large
area of low clouds with ceilings of around 1500 ft associated with a
weak frontal band is approaching from the nw. Model guidance
suggests much of this cloudiness will remain offshore or dissipate
before affecting the redwood coast. However, the band will at least
get close, so uncertainty is high. In addition, winds will be
increasing along the redwood coast today with gusts of over 20
knots. Sec

Marine N winds will increase across the area by this afternoon
with gales over the outer waters as a thermal trough strengthens
over the mainland. Have upgraded the existing gale watch to a
warning for the outer waters from 3 pm today thru Sunday night.

Steep seas will build to 9 to 11 ft by early Sunday. These seas,
combined with NW swells, will drive combined seas up to at least 10
to 12 ft. Sec

Eka watches warnings advisories
Ca... None.

Northwest california coastal waters... Small craft advisory from 11 am this morning to 9 pm pdt Sunday
for pzz450.

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

Gale warning from 3 pm this afternoon to midnight pdt Sunday
night for pzz470-475.

Small craft advisory from 8 am this morning to 9 pm pdt Sunday
for pzz455.

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
HBYC1 - 9418767 - North Spit, CA 3 mi65 min NNE 7 G 8.9 48°F 52°F1026.6 hPa
46244 - Humboldt Bay, North Spit, CA 11 mi41 min 53°F8 ft
46022 - EEL RIVER - 17NM West-Southwest of Eureka, CA 19 mi51 min N 16 G 18 52°F 52°F8 ft1025.8 hPa (-0.0)48°F
46213 - Cape Mendocino, CA (094) 46 mi49 min 52°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 mi48 minN 010.00 miFair46°F43°F89%1026.7 hPa
Fortuna Rohnerville Airport, CA18 mi66 minW 610.00 miFair45°F44°F100%1026.1 hPa

Wind History from ACV (wind in knots)
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Last 24hrNE3W6W8NW7W8NW12NW16NW16NW16NW14NW14
G20
NW10N6N5N6N5N4CalmN5NE3CalmE4CalmCalm
1 day agoCalmNW5NW8NW14NW13NW15NW18NW17
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NW12NW5CalmCalmSE5SE5SE4E5E4E5E5E6E5Calm
2 days agoCalmCalmW56W7NW9NW10NW11NW12NW12N11N8N6NE3CalmE3E3CalmE3E3E5E5E5Calm

Tide / Current Tables for Eureka, Humboldt Bay, California
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Eureka
Click for Map
Sat -- 01:18 AM PDT     Moonset
Sat -- 04:21 AM PDT     7.17 feet High Tide
Sat -- 06:28 AM PDT     Sunrise
Sat -- 11:13 AM PDT     -0.68 feet Low Tide
Sat -- 11:14 AM PDT     Moonrise
Sat -- 06:24 PM PDT     5.43 feet High Tide
Sat -- 08:02 PM PDT     Sunset
Sat -- 11:09 PM PDT     3.02 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.84.85.96.77.176.24.831.3-0-0.7-0.50.41.62.844.95.45.34.843.43

Tide / Current Tables for Fields Landing, Humboldt Bay, California
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Fields Landing
Click for Map
Sat -- 01:18 AM PDT     Moonset
Sat -- 03:54 AM PDT     6.69 feet High Tide
Sat -- 06:28 AM PDT     Sunrise
Sat -- 11:04 AM PDT     -0.65 feet Low Tide
Sat -- 11:14 AM PDT     Moonrise
Sat -- 05:57 PM PDT     5.07 feet High Tide
Sat -- 08:02 PM PDT     Sunset
Sat -- 11:00 PM PDT     2.90 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.84.95.86.56.76.35.43.92.30.8-0.2-0.7-0.30.61.834.14.85.14.84.33.63.12.9

Weather Map and Satellite Images
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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.
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Wind Forecast for Eureka, CA (11,2,3,4)
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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.