Saturday, August18, 2018 L-36.com


Marine Weather and Tides
Westhaven-Moonstone, CA

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Sunrise 6:29AMSunset 8:10PM Saturday August 18, 2018 9:30 AM PDT (16:30 UTC) Moonrise 1:32PMMoonset 11:50PM Illumination 47% 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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PZZ450 Pt St George To Cape Mendocino Out 10 Nm- 837 Am Pdt Sat Aug 18 2018
.small craft advisory in effect through Sunday afternoon...
Today..N winds 5 to 15 kt. Waves nw 8 ft at 8 seconds...and W 2 ft at 12 seconds. Haze and areas of smoke.
Tonight..N winds 5 to 15 kt. Waves nw 7 ft at 8 seconds. Haze with possible smoke and fog.
Sun..N winds 5 to 15 kt. Waves nw 7 ft at 8 seconds. Patchy fog.
Sun night..N winds 5 to 15 kt. Waves nw 7 ft at 9 seconds.
Mon..NW winds 5 to 10 kt. Waves N 5 ft at 7 seconds.
Tue..SW winds 5 kt. Waves nw 4 ft at 7 seconds...and W 3 ft at 12 seconds.
Wed..W winds 5 to 10 kt. Waves nw 2 ft at 4 seconds...and nw 4 ft at 9 seconds.
PZZ400 837 Am Pdt Sat Aug 18 2018
Synopsis for northern california waters..Robust northerly winds and steep hazardous seas will continue across the outer waters through Monday. For the inner waters, winds will generally be lighter with rough and uncomfortable seas.


7 Day Forecast for Marine Location Near Westhaven-Moonstone, CA
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location: 41.05, -124.1     debug


Area Discussion for - Eureka, CA
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Fxus66 keka 181119
afdeka
area forecast discussion
national weather service eureka ca
419 am pdt Sat aug 18 2018

Synopsis Dry weather will continue for the foreseeable future,
with hot weather forecast for interior northwest california.

Coastal clouds and fog will give way to some periods of clear
skies this weekend, but there will still be quite a bit of smoke
and haze around, especially closer to area wildfires.

Discussion Satellite imagery this morning shows the coasts of
humboldt and del norte counties free of stratus! However, it also
shows a thin layer of smoke with crescent city currently reporting
reduced visibility and a layer of smoke at 3900 feet. Farther
south, along the mendocino coast, there is some stratus, but it
has not penetrated as far inland. The good news is that we may be
in store for a sunny day here at the coast, but with easterly
winds at play we will also likely have hazy and smoky skies.

Conditions farther inland will probably be similar to yesterday,
although temperatures may be a few degrees warmer due to a brief
period of ridging building overhead. Smoke and haze are likely for
these areas too, especially as you get closer to the fires.

Sunday and beyond, models suggest that our weather will be
dominated by an upper level trough. Rain is not expected to come
from this, but temperatures will be slightly cooler for interior
areas with highs making into the 80s and 90s. At the coast, the
marine layer will likely redevelop and advance inland each night.

Patchy fog and perhaps even some drizzle will be possible each
night.

Aviation The primary forecast problem for today will be smoke
from wild fires. Smoke layers aloft have already spread out over
kcec with ceilings around 4000 ft. The smoke appeared to be
spreading southwestward offshore over the coastal waters. Expect
layers of smoke aloft to spread over acv and eka. MVFR or ifr
conditions due to smoke or haze will certainly be possible today at
both coastal terminals today. The timing and duration of MVFR or ifr
conditions due to smoke are highly uncertain.

Another forecast problem is the coastal stratus. Stratus +decreased
significantly across the area yesterday and so far there has not
been much regeneration. Satellite imagery has been showing a few
slivers developing offshore west of eureka early this morning.

Some stratus may push onshore shortly after sunrise. Ifr or lifr
ceilings may briefly impact kacv through mid morning.

Model soundings and profiles indicate marine layer conditions
redeveloping around humboldt bay tonight. Expect ifr or lifr
conditions to impact kacv overnight into Sunday morning. Based on
high resolution model data, kcec would stay clear tonight. Guidance
continues to indicate southerly winds developing tonight. Stratus
may advect into kcec by daybreak Sunday.

Smoke from nearby wild fires will continue to impact kuki with
periodic MVFR or ifr conditions. The timing and duration of the
smoke are highly uncertain.

Marine Brisk northerly winds and steep hazardous seas will
continue across the outer waters through Monday. For the inner
waters, winds will generally be lighter but with rough and
uncomfortable seas. The GFS and ECMWF indicate a diminishing trend
in winds and seas Tuesday through Wednesday of next week.

Fire weather More or less of the same is expected for the
foreseeable future, with the exception being this morning due to
a thermal trough. This has brought some gusty easterly winds
across eastern del norte county. Gusts up to 25 mph will be
possible through the early morning hours up there, while rh
recoveries remain poor. Elsewhere, lighter easterly winds will be
possible for the higher terrain of eastern trinity and mendocino
counties. These winds will likely be accompanied with a variety of
recoveries with areas closest to the coast having the best.

Other than those winds, expect another hot day for interior
northwest california as temperatures will approach 100 degrees for
some valleys this weekend. Next week, temperatures will be still
be hot, but highs will likely peak in the 80s and 90s.

Eka watches warnings advisories
Ca... None.

Northwest california coastal waters... Small craft advisory until 5 pm pdt Sunday for pzz450.

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

Small craft advisory until 5 am pdt Monday for pzz455.

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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 17 mi91 min 53°F8 ft
HBYC1 - 9418767 - North Spit, CA 21 mi55 min Calm G 1 54°F 53°F1019.1 hPa
46022 - EEL RIVER - 17NM West-Southwest of Eureka, CA 32 mi21 min NNW 5.8 G 7.8 53°F 52°F1019.5 hPa53°F
CECC1 - 9419750 - Crescent City, CA 48 mi37 min S 1 G 1 57°F 58°F1018 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, CA4 mi38 minS 38.00 miFair57°F55°F93%1019.1 hPa

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Last 24hrN3NW5NW7NW5NW74NW5NW4W5SW4SW4SE3SE4SE5SE4SE5SE4CalmCalmE4CalmCalmE3S3
1 day agoNW3W5W5W5W5W6W6--NW6NW6--N7N5N3CalmNW3CalmN3N3NW4CalmNW4CalmCalm
2 days ago3CalmNW4NW4W6NW5NW5NW5NW5NW5NW3N3N3N4N5N4N5NE4N3N3CalmE4E4E4

Tide / Current Tables for Trinidad Harbor, California
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Trinidad Harbor
Click for Map
Sat -- 12:09 AM PDT     1.12 feet Low Tide
Sat -- 12:14 AM PDT     Moonset
Sat -- 12:49 AM PDT     First Quarter
Sat -- 06:22 AM PDT     4.74 feet High Tide
Sat -- 06:29 AM PDT     Sunrise
Sat -- 11:46 AM PDT     2.45 feet Low Tide
Sat -- 02:31 PM PDT     Moonrise
Sat -- 06:12 PM PDT     6.26 feet High Tide
Sat -- 08:10 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.11.31.92.83.64.34.74.74.33.632.62.52.83.44.35.25.96.26.15.54.53.32.3

Tide / Current Tables for Mad River Slough, Arcata Bay, Humboldt Bay, California
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Mad River Slough
Click for Map
Sat -- 12:14 AM PDT     Moonset
Sat -- 12:44 AM PDT     1.23 feet Low Tide
Sat -- 12:49 AM PDT     First Quarter
Sat -- 06:29 AM PDT     Sunrise
Sat -- 07:07 AM PDT     5.45 feet High Tide
Sat -- 12:23 PM PDT     2.61 feet Low Tide
Sat -- 02:31 PM PDT     Moonrise
Sat -- 07:03 PM PDT     7.35 feet High Tide
Sat -- 08:10 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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1.41.31.72.53.54.45.15.45.34.73.93.12.72.73.34.25.26.277.47.16.253.6

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.