Monday, June18, 2018 L-36.com


Marine Weather and Tides
Eureka, CA

Version 3.4
What's New / NOTES
5/20/2018 -- NOAA is having problems with the data feed that I use to draw the graphs. They are aware of the issue and working to resolve it. Sometimes changing the location by about a mile will give a correct graph. 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.

Sunrise 5:43AMSunset 8:52PM Monday June 18, 2018 9:50 AM PDT (16:50 UTC) Moonrise 10:22AMMoonset 12:00AM Illumination 27% 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
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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 828 am pdt Mon jun 18 2018 with high pressure building towards the west coast, north winds will return Tuesday, and will gradually increase through the end of the 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 181129
afdeka
area forecast discussion
national weather service eureka ca
429 am pdt Mon jun 18 2018

Synopsis Coastal stratus has returned to the area this morning.

This will continue through much of the week with some afternoon
clearing expected. Inland temperatures will start on a warming
trend that will continue through the weekend with temperatures
reaching the mid 90s to 100.

Discussion The upper level low continues to move off to the
east of the area and high pressure is building towards the west
coast. Stratus is in place along the entire coast this morning,
although it doesn't extend all that far inland and the marine
layer is only around 2,000 feet deep. This should help skies to
clear back close to the coast this afternoon, but the immediate
coast may see clouds persist in some areas. The warming trend
starts today with highs climbing into the 80s across the interior
areas. Winds will be fairly light at the coast. Tuesday will see
similar conditions as high pressure builds in, although
temperatures over the inland areas will warm into the upper 80s
and low 90s.

Tuesday night into Wednesday models are showing a shortwave
trough approaching the area. This may deepen the marine layer
slightly and bring some drizzle to the coast. Inland areas may
cool a degree or two. There is also the potential for showers and
thunderstorms over the interior, but the southwest flow is
generally not favorable for thunderstorms in this area. Current
model soundings show a modest cap in the mid levels that may prove
difficult to overcast of 6 18 at 11z, ifr ceilings have developed
at coastal terminals thanks to a broad shield of marine stratus
clouds. Present trends indicate that ceilings are holding
relatively steady, with minimal visibility reductions due to fog
as of yet. However, it remains possible that at least temporary
lifr conditions for either or both ceilings and visibilities will
develop within the next couple of hours and persist through
perhaps mid morning. Confidence is low. Ceilings will likely rise
back to ifr by late morning, but total clearing is uncertain at
the terminals themselves. If clouds to clear at either terminal
today, they will likely remain very nearby across the ocean
waters, and may periodically impact the terminals through the day
anyway. Stratus will very quickly move back onshore late in the
afternoon early evening, and ifr ceilings will remain through
tomorrow night.VFR conditions are expected to prevail at uki,
although much like yesterday a brief period of low clouds will be
possible for a few hours early Monday morning. Me. Mid level lapse
rates are around 6c km and models keep most of the QPF to the
north and east of the area. Still this will need to be watched as
it gets closer.

Thursday through Saturday high pressure continues to build over
the area. Temperatures in the inland areas may warm to over 100 in
some of the valleys. The marine layer is expected to become
fairly shallow and eventually almost nonexistent Friday night
into Saturday the flow becomes more offshore. The coast could see
mainly clear skies and temperatures warming to near 70. Gusty
north winds are expected at the coast which may limit the warming
somewhat. Sunday the ridge axis pushes to the east of the area and
stratus may return. Inland temperatures may cool a degree or two,
although the coastal areas will see more cooling. Monday an upper
level trough will bring additional cooling and temperatures may
drop to the low 90s in the inland areas. Mkk

Aviation As of 6 18 at 11z, ifr ceilings have developed at
coastal terminals thanks to a broad shield of marine stratus clouds.

Present trends indicate that ceilings are holding relatively steady,
with minimal visibility reductions due to fog as of yet. However, it
remains possible that at least temporary lifr conditions for either
or both ceilings and visibilities will develop within the next
couple of hours and persist through perhaps mid morning. Confidence
is low. Ceilings will likely rise back to ifr by late morning, but
total clearing is uncertain at the terminals themselves. If clouds
to clear at either terminal today, they will likely remain very
nearby across the ocean waters, and may periodically impact the
terminals through the day anyway. Stratus will very quickly move
back onshore late in the afternoon early evening, and ifr ceilings
will remain through tomorrow night.VFR conditions are expected to
prevail at uki, although much like yesterday a brief period of low
clouds will be possible for a few hours early Monday morning.

Marine Generally light southerly winds remain across the
waters early this morning, and seas continue to gradually subside.

Winds will very slowly transition from southerly to northerly
during the day today, and complete this transition by late
evening. North winds will very slowly increase between Tuesday and
Thursday, but aside from perhaps some gusts near 20 to 25 kt
around CAPE mendocino, wind speeds should remain light to
moderately breezy during this time period across most of the
waters. Seas will be generally subdued to perhaps moderately
elevated at times during this time frame as well, with a mix of
small westerly and southerly long period swells, and generally
small but steep northerly wind waves. Largest seas and strongest
winds will occur south of CAPE mendocino.

North winds will increase substantially Friday and beyond, with gale
force winds highly likely to occur at various points over the
weekend. Brc

Eka watches warnings advisories
Ca... None.

Northwest california coastal waters... None.

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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 mi74 min W 6 G 7 50°F 51°F1019.2 hPa
46244 - Humboldt Bay, North Spit, CA 13 mi50 min 51°F5 ft
46022 - EEL RIVER - 17NM West-Southwest of Eureka, CA 22 mi40 min SSE 5.8 G 7.8 51°F 51°F1019.3 hPa51°F
46213 - Cape Mendocino, CA (094) 47 mi50 min 55°F6 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 minWSW 73.00 miFog/Mist54°F51°F90%1019.1 hPa
Fortuna Rohnerville Airport, CA18 mi71 minN 38.00 miOvercast52°F51°F100%1018.6 hPa

Wind History from ACV (wind in knots)
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Last 24hr3SW6SW12SW8SW12SW9SW9W9SW5SW5S4SW8S53S3S4S3SW5CalmCalmW4W3SW3W7
1 day ago3N15N19
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NW12NW10S5SE4E4CalmE4CalmCalmSE4Calm----CalmNW5
2 days agoW7W5W7NW15
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CalmSE3E3CalmCalmCalmE3CalmCalmCalmS5S4

Tide / Current Tables for Eureka Slough Bridge, Humboldt Bay, California
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Eureka Slough Bridge
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Mon -- 12:26 AM PDT     Moonset
Mon -- 04:02 AM PDT     7.37 feet High Tide
Mon -- 05:44 AM PDT     Sunrise
Mon -- 10:38 AM PDT     -1.15 feet Low Tide
Mon -- 11:22 AM PDT     Moonrise
Mon -- 05:50 PM PDT     6.59 feet High Tide
Mon -- 08:50 PM PDT     Sunset
Mon -- 11:04 PM PDT     2.46 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.956.277.475.841.90.2-0.9-1.1-0.40.92.54.15.46.36.66.15.13.92.92.5

Tide / Current Tables for Fields Landing, Humboldt Bay, California
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Fields Landing
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Mon -- 12:26 AM PDT     Moonset
Mon -- 03:28 AM PDT     6.76 feet High Tide
Mon -- 05:45 AM PDT     Sunrise
Mon -- 10:23 AM PDT     -1.12 feet Low Tide
Mon -- 11:22 AM PDT     Moonrise
Mon -- 05:16 PM PDT     6.04 feet High Tide
Mon -- 08:50 PM PDT     Sunset
Mon -- 10:49 PM PDT     2.38 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
45.16.16.76.75.94.62.81.1-0.3-1-1-0.11.32.94.35.565.95.24.33.32.62.4

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 (12,3,4,5)
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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.