Monday, May21, 2018 L-36.com


Marine Weather and Tides
Bayview, 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 5:51AMSunset 8:35PM Monday May 21, 2018 8:02 AM PDT (15:02 UTC) Moonrise 11:25AMMoonset 12:47AM Illumination 42% Phase: First Quarter Moon; Moon at 7 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 250 Am Pdt Mon May 21 2018
Synopsis for northern california waters..Short period seas will continue to build today as northerly winds increase offshore. Winds and seas will settle down on Wed.

7 Day Forecast for Marine Location Near Bayview, CA
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location: 40.78, -124.2     debug


Area Discussion for - Eureka, CA
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Fxus66 keka 211139
afdeka
area forecast discussion
national weather service eureka ca
439 am pdt Mon may 21 2018

Synopsis We may have a brief break for coastal marine stratus
and interior thunderstorms for today. However, they will return to
the area from Tuesday through Friday.

Discussion We are finally getting a brief break in the stagnant
pattern. We have a weak upper level low over southern ca. This
gives us a northerly upper level flow ushering in drier air into
nw california. What this means that we will see a break from the
persistent coastal marine stratus and inland thunderstorms for the
day. Models are hinting on mostly sunny skies over del norte
coast. For humboldt coast, we will see marine stratus trying to
break up, and may see a few peeks of sunshine this afternoon.

With the drier air in place, conditions will not be conducive for
thunderstorm developments over interior mountains for this
afternoon.

Enjoy what you have today, because it will not last long. Do
expect marine stratus to return to the coast tonight. Models are
hinting coastal areas to be saturated in the boundary layer from
Tuesday through rest of the work week, courtesy of the return of
the onshore flow. With increase in moisture, potential for
thunderstorm development will return to the interior mountains
from Tuesday through Friday. On Thursday and Friday, a well-
organized cutoff lows will approach the area. With this weather
feature, think that the most favorable conditions for convection
over interior mountains will be on Thursday and Friday.

Aviation A moderately deep and persistent marine layer has
pushed well into the interior again. The clouds were covering nearly
all of humboldt county and extended into central and eastern trinity
county. The interior low cloud cover will bust up with daytime
heating and mixing. The solid MVFR ceiling at coastal terminals this
morning should lift up and become more broken this afternoon. The
daytime mixing and drying for sites at the coast will be fighting
against a moist onshore flow which will likely lead to more cloud
generation this afternoon. Thus expect MVFR ceilings to quickly
spread back over the coastal plain and terminals by this evening.

There is a potential for ceilings dropping below 1000 feet as we
head into the early morning hours of tue. Confidence at this point
is not high.

For kuki, skies were clear through the night. Low clouds were banked
up over the coastal ranges to the west. Northerly flow offshore is
typically not a favorable setup for stratus at kuki, unless the
layer deepens and pushes over the coastal ranges. The marine layer
is not expected to deepen considerably through the forecast period.

Thus,VFR is expected for kuki today through tonight.

Marine Moderate northerlies offshore will generate steep
northerly wind waves today and tonight. Short period seas will most
likely reach 10 ft or more by this evening. Expect rough conditions
to last into Tue before northerly breezes and steep seas settle
down Wed and thu.

Eka watches warnings advisories
Ca... None.

Northwest california coastal waters... Small craft advisory until 5 pm pdt Tuesday for pzz450-455-470-
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 1 mi86 min ENE 5.1 G 6 49°F 50°F1015.2 hPa
46244 - Humboldt Bay, North Spit, CA 12 mi62 min 50°F7 ft
46022 - EEL RIVER - 17NM West-Southwest of Eureka, CA 18 mi52 min N 18 G 21 52°F 52°F1015.6 hPa50°F
46213 - Cape Mendocino, CA (094) 44 mi40 min 54°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, CA15 mi69 minN 010.00 miOvercast53°F48°F86%1015.2 hPa
Fortuna Rohnerville Airport, CA16 mi67 minWNW 49.00 miOvercast48°F46°F94%1014.9 hPa

Wind History from ACV (wind in knots)
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Last 24hrNE4N6NW9N9N10N10NW8N11N10N11
G17
----N7N8N7N7NW3CalmW3S3SE5SE3CalmNW3
1 day agoNW6NW5NW8NW8NW9NW8NW8W5W6NW6--NW5
G22
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2 days agoNW3NW6N11NW11NW11NW13NW12NW12N13N10--N8N6N6N3N3N3NE5N3CalmCalmNW4CalmNW4

Tide / Current Tables for Bucksport, Humboldt Bay, California
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Bucksport
Click for Map
Mon -- 01:47 AM PDT     Moonset
Mon -- 04:59 AM PDT     6.66 feet High Tide
Mon -- 05:54 AM PDT     Sunrise
Mon -- 12:00 PM PDT     -0.45 feet Low Tide
Mon -- 12:25 PM PDT     Moonrise
Mon -- 07:12 PM PDT     6.19 feet High Tide
Mon -- 08:33 PM PDT     Sunset
Mon -- 08:50 PM PDT     First Quarter
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.444.95.86.46.76.45.54.12.51-0.1-0.5-0.10.92.23.64.95.86.265.44.53.6

Tide / Current Tables for Mad River Slough, Arcata Bay, Humboldt Bay, California
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Mad River Slough
Click for Map
Mon -- 01:47 AM PDT     Moonset
Mon -- 05:28 AM PDT     6.98 feet High Tide
Mon -- 05:53 AM PDT     Sunrise
Mon -- 12:15 PM PDT     -0.75 feet Low Tide
Mon -- 12:24 PM PDT     Moonrise
Mon -- 07:27 PM PDT     6.39 feet High Tide
Mon -- 08:33 PM PDT     Sunset
Mon -- 08:50 PM PDT     First Quarter
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
33.64.55.56.46.96.96.14.731.3-0.1-0.7-0.50.41.73.14.65.76.36.35.74.73.7

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.