Thursday, August22, 2019 L-36.com


Marine Weather and Tides
Big Lagoon, CA

Version 3.4
NOTICE
7/25/2019 New feature in the Airports section gives a link to 5 minute updates for data reports.
6/2/2019. Many thanks to a user for reporting an error on one of the Edit pages. The switch to PHP 7.2 caused many pages that previously worked to quit working. I fixed many but I still depend on users to report ones I missed. Please report errors HERE or send an email to me at L-36.com. Allen

Sunrise 6:31AMSunset 8:06PM Thursday August 22, 2019 11:21 AM PDT (18:21 UTC) Moonrise 10:56PMMoonset 12:19PM Illumination 54% Phase: Third Quarter Moon; Moon at 22 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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PZZ450 Pt St George To Cape Mendocino Out 10 Nm- 843 Am Pdt Thu Aug 22 2019
.small craft advisory in effect from 5 pm pdt this afternoon through Saturday afternoon...
Today..N winds 15 to 25 kt. Waves nw 8 ft at 7 seconds.
Tonight..N winds 15 to 25 kt. Waves N 10 ft at 9 seconds... And nw 4 ft at 15 seconds.
Fri..N winds 5 to 15 kt. Waves nw 8 ft at 8 seconds...and W 3 ft at 15 seconds.
Fri night..NW winds 5 to 10 kt. Waves nw 7 ft at 8 seconds... And W 2 ft at 14 seconds.
Sat..NW winds 5 to 10 kt. Waves N 6 ft at 8 seconds...and sw 2 ft at 15 seconds.
Sun..N winds 5 to 10 kt. Waves nw 7 ft at 9 seconds.
Mon..N winds 5 to 10 kt. Waves nw 6 ft at 9 seconds.
PZZ400 843 Am Pdt Thu Aug 22 2019
Synopsis for northern california waters..Northerlies will increase today and steep, short-period seas rapidly build in response. Northerly winds will diminish slightly Friday, but remain moderate to fresh in the outer waters Friday night into the weekend.


7 Day Forecast for Marine Location Near Big Lagoon, CA
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location: 41.17, -124.32     debug


Area Discussion for - Eureka, CA
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Fxus66 keka 221039
afdeka
area forecast discussion
national weather service eureka ca
339 am pdt Thu aug 22 2019

Synopsis A warming trend is forecast to take place across
northwest california through early next week. Warm to locally hot
conditions are expected along with near zero chances for
precipitation.

Discussion A relatively potent upper disturbance that aided in
light rainfall across the redwood coast during Wednesday is
exiting east across or wa early Thursday morning. Patchy fog and
drizzle were occurring over portions of coastal nwrn ca in the
wake of the or wa disturbance... But the boundary layer is forecast
to dry out this afternoon and aid in clearing skies that will
favor mild temperatures near sea level... Ranging to locally hot
conditions across interior valleys.

An upper-level anticyclone is forecast to become centered over the
region by early next week. Increasing subsidence aloft and warming
boundary layer temperatures, combined with abundant sunshine
potentially extending offshore, indicates that hot temperatures
will be probable during the Monday Tuesday Wednesday time frame.

Otherwise, building heights aloft will yield near-zero
precipitation chances during the next seven days.

Aviation Areas along the coast are seeing moist conditions
this morning. Patchy fog has developed this morning and is
bringing periods of lifr conditions to the coastal areas. This is
expected to lift this morning and clear out by late this morning
as mixing increases. Temperatures aloft have cooled making the
inversion fairly weak which should help bring mostly clear skies
this afternoon. Breezy north winds are also expected with gusts of
20 to 30 kt this afternoon at the coast. Currently there are mid
level clouds over the interior but most areas, aside from the
coastal river valleys, are not seeing fog. Tonight offshore flow
develops and this may keep the del norte coast clear. Low clouds
are possible around humboldt bay once again while the inland areas
remain clear once again. Mkk

Marine An upper level trough and associated frontal boundary
moved through the area Thursday. High pressure has started to
build into the area and northerly winds are increasing. These are
expected to peak tonight before the gradient starts to relax. The
northern outer waters are expected to see gale force winds this
afternoon and tonight and the gale warning looks on track. The
southern waters and the inner waters may see a few gale force
gusts especially near the capes, but they are not expected to be
widespread enough to warrant gale warnings. These northerlies will
generate large and steep seas into the southern outer waters and
the hazardous seas warning remains on track.

A west to northwest swell around 3 feet at 12 seconds continues
to move through the waters. This is expected to continue through
the weekend. Friday and into the weekend winds and short period
seas will remain moderate to fresh. This will keep the steep seas
around 7 to 10 feet and small craft advisories will likely be
needed.

Early next week winds will continue to diminish. By mid-week
models are trying to show a trough or upper level low moving into
the area again. The models are fairly confident that winds will be
light, but are struggling with the position of the low and the
direction of the surface winds. Mkk

Eka watches warnings advisories
Ca... None.

Northwest california coastal waters... Small craft advisory from 5
pm this afternoon to 5 pm pdt Saturday for pzz450.

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

Gale warning from 3 pm this afternoon to 5 am pdt Friday for
pzz470.

Small craft advisory from 11 am this morning to 5 pm pdt
Saturday for pzz455.

Small craft advisory until 9 pm pdt this evening for pzz475.

Hazardous seas warning from 9 pm this evening to 5 pm pdt Friday
for pzz475.

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
46244 - Humboldt Bay, North Spit, CA 19 mi52 min 56°F6 ft
HBYC1 - 9418767 - North Spit, CA 28 mi46 min 58°F1014 hPa
46022 - EEL RIVER - 17NM West-Southwest of Eureka, CA 34 mi32 min N 14 G 18 57°F7 ft1014.6 hPa
CECC1 - 9419750 - Crescent City, CA 40 mi58 min NNW 1 G 5.1 60°F 56°F1013.9 hPa

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, CA17 mi29 minN 04.00 miFog/Mist61°F59°F93%1014 hPa

Link to 5 minute data for KACV

Wind History from ACV (wind in knots)
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Last 24hr3NW4N33NW7NW8CalmNW3N3CalmNW4CalmN3N9N6NW9N3S4S5S3S4SW3W5Calm
1 day agoW7NW6NW6NW8W7NW6NW4NW4CalmCalmE4CalmE3CalmNW4E4E4CalmE4CalmCalmCalmSW4Calm
2 days agoW8W7W6NW7NW6NW7W4W4CalmN4CalmCalmCalmCalmSE3CalmE3CalmCalmCalmCalmCalmW3W4

Tide / Current Tables for Trinidad Harbor, California
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Trinidad Harbor
Click for Map
Thu -- 04:46 AM PDT     4.67 feet High Tide
Thu -- 06:33 AM PDT     Sunrise
Thu -- 10:24 AM PDT     2.29 feet Low Tide
Thu -- 01:18 PM PDT     Moonset
Thu -- 04:53 PM PDT     5.97 feet High Tide
Thu -- 08:05 PM PDT     Sunset
Thu -- 11:50 PM PDT     1.55 feet Low Tide
Thu -- 11:55 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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2.12.73.44.14.64.74.43.93.22.62.32.42.83.54.45.25.865.754.13.12.21.7

Tide / Current Tables for Arcata Wharf, Humboldt Bay, California
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Arcata Wharf
Click for Map
Thu -- 05:45 AM PDT     4.91 feet High Tide
Thu -- 06:33 AM PDT     Sunrise
Thu -- 11:37 AM PDT     2.27 feet Low Tide
Thu -- 01:17 PM PDT     Moonset
Thu -- 05:55 PM PDT     6.38 feet High Tide
Thu -- 08:04 PM PDT     Sunset
Thu -- 11:55 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.82.12.73.64.34.84.94.64.13.42.82.42.32.73.64.65.56.26.46.15.54.53.42.5

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.
Link to Loop

Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Eureka, CA (14,3,4,5)
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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.