Thursday, June20, 2019 L-36.com


Marine Weather and Tides
Etna, CA

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Sunrise 5:32AMSunset 8:51PM Wednesday June 19, 2019 10:09 PM PDT (05:09 UTC) Moonrise 9:57PMMoonset 6:43AM Illumination 93% Phase: Waning Gibbous; Moon at 17 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- 824 Pm Pdt Wed Jun 19 2019
.hazardous seas warning in effect through Friday evening...
Tonight..N winds 20 to 30 kt with gusts to around 40 kt. Waves N 13 ft at 10 seconds.
Thu..N winds 20 to 30 kt with gusts to around 40 kt. Waves N 11 ft at 10 seconds...and nw 2 ft at 11 seconds.
Thu night..N winds 25 to 35 kt. Waves N 12 ft at 10 seconds.
Fri..N winds 15 to 25 kt. Waves N 11 ft at 10 seconds.
Fri night..N winds 15 to 25 kt. Waves nw 10 ft at 9 seconds.
Sat..N winds 15 to 20 kt. Waves nw 10 ft at 9 seconds.
Sun..N winds 10 to 20 kt. Waves nw 8 ft at 7 seconds.
Mon..N winds 5 to 15 kt. Waves N 4 ft at 5 seconds...and nw 3 ft at 12 seconds.
PZZ400 824 Pm Pdt Wed Jun 19 2019
Synopsis for northern california waters..Gale force northerly winds and steep hazardous seas will persist through Sunday. Winds and seas will diminish early next week.


7 Day Forecast for Marine Location Near Etna, CA
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location: 41.34, -123.02     debug


Area Discussion for - Medford, OR
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Fxus66 kmfr 200348
afdmfr
area forecast discussion
national weather service medford or
848 pm pdt Wed jun 19 2019

Update Once again the sky is almost completely clear across
the region this evening, with signs of low clouds about to form
along the coast. Clouds are expected to build into the umpqua
basin tonight, with some spilling over into the rogue valley by
morning. Current forecast looks on track and will not update this
evening. Sven

Prev discussion issued 249 pm pdt Wed jun 19 2019
discussion...

we'll see clear skies continue into this evening with winds
starting to increase in the valleys and over higher terrain. Then,
we'll see a short wave approach from the northwest during
Wednesday night. By Thursday morning, a dry cold front is expected
to move through the region and bring in relatively cooler
temperatures and drier air to much of the pacific northwest. High
temperatures are expected to be roughly 10 degrees cooler than
average for this time of year on Thursday and for Friday as well.

Looking at anomaly tables, the temperatures moving in will be in
the 10th percentile for early june, so it's not going to be an
extremely abnormal airmass Thursday or Friday.

Eventually, this shortwave will depart the region and high
pressure will try to build in it's wake. The ensemble guidance
suggests the ridge will struggle to build inland eastward and
remain strongest over the pacific. Because of this, temperatures
will be near normal for this weekend into next week. The next
important talking point is the next approaching long wave around
Tuesday.

We have pretty high confidence that a long wave is expected to
approach the oregon coastline around Tuesday next week. The exact
time is of course up in the air. This is the type of pattern when
we expect some thunderstorms, but exact location is uncertain. We
kept a slight chance of thunderstorms east of the cascades Tuesday
evening and Wednesday evening just based off the pattern and the
fact that this area is the most convectively active region in our
warning area.

-smith

Aviation For the 20 06z tafs...VFR will prevail this evening and
with gusty north winds near the TAF sites. A mix ofVFR and MVFR
cigs will make their way back into the coast and umpqua valley later
tonight. The air will be more unstable, so we're not expecting MVFR
to prevail all night. Things will scatter out again tomorrow with
more gusty north winds tomorrow afternoon. -schaaf smith

Marine Updated 800 pm pdt Wednesday 19 june 2019... Gale force
winds will continue into this evening mainly south of port orford.

The thermal trough pattern will continue into the weekend, but
weaken briefly Thursday as cooler more unstable air moves into the
waters. Winds will then strengthen and resume gale force strength
south of gold beach from Thursday afternoon into Saturday.

Conditions hazardous to smaller crafts will occur north of port
orford through Saturday.

Fire weather... Updated 200 pm pdt Wednesday 19 june 2019... Gusty
north-northwest winds will continue into this evening as an upper
trough and dry cold front approach from the north. Temperatures are
running 5-10 degrees cooler than yesterday at this time, but it is
drier, in some cases much drier, than 24 hours ago. The combination
of gusty winds and very dry air makes for near critical fire weather
conditions through this evening. The upper trough and dry cold front
will cross the region tomorrow and bring another 5-10 degrees of
cooling along with slightly higher humidities. However, gusty north
winds are expected again in the afternoon. Expect warmer and drier
than normal weather to return this weekend.

Guidance shows another upper trough moving into our area next week
which will bring cooler weather and at least some chance of showers
and thunderstorms. Unlike yesterday when models had the upper low
moving right over us, they are now keeping the center of it
offshore. This puts us in a favorable position for thunderstorm
development. However, if and where storms form will depend on many
factors, and it is too far out to nail down those details.

-wright

Mfr watches warnings advisories
Or... Freeze watch from late Thursday night through Friday morning for
orz029>031.

Ca... None.

Pacific coastal waters... Small craft advisory until 11 pm pdt Saturday for
pzz350-356-370-376.

Gale warning until 11 pm pdt Saturday for pzz356-376.

Sbn sbn sbn


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CECC1 - 9419750 - Crescent City, CA 68 mi63 min N 16 G 22 54°F 50°F1016.7 hPa
HBYC1 - 9418767 - North Spit, CA 75 mi93 min 52°F1018.1 hPa
46244 - Humboldt Bay, North Spit, CA 77 mi41 min 51°F12 ft

Wind History for Crescent City, CA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Mount Shasta, CA37 mi73 minno data10.00 miFair65°F25°F22%1016.6 hPa

Wind History from MHS (wind in knots)
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Last 24hr5644356CalmCalmNW84
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1 day ago335554NE46646N7654NW5
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2 days ago64N7--NE5--4Calm34N44N8566
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Tide / Current Tables for Trinidad Harbor, California
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Trinidad Harbor
Click for Map
Thu -- 01:32 AM PDT     6.41 feet High Tide
Thu -- 05:44 AM PDT     Sunrise
Thu -- 08:41 AM PDT     -0.85 feet Low Tide
Thu -- 08:46 AM PDT     Moonset
Thu -- 03:34 PM PDT     5.29 feet High Tide
Thu -- 08:36 PM PDT     3.05 feet Low Tide
Thu -- 08:52 PM PDT     Sunset
Thu -- 11:39 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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5.86.36.35.74.631.50.1-0.7-0.8-0.30.82.23.64.65.25.24.84.23.63.13.13.54.2

Tide / Current Tables for Arcata Wharf, Humboldt Bay, California
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Arcata Wharf
Click for Map
Thu -- 02:31 AM PDT     7.10 feet High Tide
Thu -- 05:44 AM PDT     Sunrise
Thu -- 08:46 AM PDT     Moonset
Thu -- 09:49 AM PDT     -0.57 feet Low Tide
Thu -- 04:46 PM PDT     5.70 feet High Tide
Thu -- 08:51 PM PDT     Sunset
Thu -- 09:38 PM PDT     3.55 feet Low Tide
Thu -- 11:39 PM PDT     Moonrise
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.

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5.66.5776.55.33.82.10.6-0.3-0.6-0.112.43.84.95.55.75.44.84.13.63.64

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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Other links: Northern Pacific     Contential US     Full GOES-East
Wind Forecast for Medford, OR (1,6,7,8)
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Ground Weather Radar Station Medford, OR
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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.