Thursday, November23, 2017 L-36.com


Marine Weather and Tides
Etna, CA

Version 3.4
What's New / NOTES
6/25/2017 - NOAA is having a major issue that impact the 7 day forecast load times. Many users are reporting problems. The issue has been reported.
5/23/2017 - Worked with NOAA again to speed up the 7 day forecast load times. Thanks to them for being responsive.
5/19/2016 - There were issues with the 3 day airport observation history. I switched to another data source. Let me know if you see any issues with the data feeds.

Sunrise 7:10AMSunset 4:44PM Thursday November 23, 2017 6:46 AM PST (14:46 UTC) Moonrise 11:16AMMoonset 9:18PM Illumination 24% 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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PZZ450 Pt St George To Cape Mendocino Out 10 Nm- 253 Am Pst Thu Nov 23 2017
Today..SW winds 5 to 15 kt. Waves sw 7 ft at 8 seconds...and nw 5 ft at 14 seconds. Widespread showers.
Tonight..NW winds 5 kt. Waves sw 6 ft at 11 seconds. Isolated showers.
Fri..NW winds up to 5 kt. Waves sw 7 ft at 11 seconds.
Fri night..NE winds up to 5 kt. Waves nw 5 ft at 9 seconds.
Sat..SE winds 15 to 25 kt. Waves S 8 ft at 9 seconds...and nw 7 ft at 17 seconds.
Sun..SW winds 15 to 25 kt. Waves S 5 ft at 7 seconds...and W 14 ft at 15 seconds.
Mon..SE winds up to 5 kt. Waves W 13 ft at 13 seconds.
PZZ400 253 Am Pst Thu Nov 23 2017
Synopsis for northern california waters..Winds will continue to decrease this morning allowing seas to subside. Light winds will persist through Friday as high pressure moves over the waters. South winds will return Saturday with gale force winds possible over the weekend. Steep seas will build in response to the winds.

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 231252
afdmfr
area forecast discussion
national weather service medford or
452 am pst Thu nov 23 2017

Discussion Yet another day of challenging high temperatures
with a combination of a cooler air mass moving in this afternoon
and already fairly warm temperatures over the region. All of the
ridge sites are warm and even ashland is already at 63 degrees at
4 am. Winds at a couple of thousand feet are near 30 kt and this
should mix a warmer air mass aloft, with 925 mb temps of 17c, down
before the cooler air mass moves in later today. Winds will be at
advisory strength, mostly in the higher elevations of the east
side with 700 mb winds around 50-55 kt. This front will continue
to bring significant, but not extreme rainfall to the region. With
the upper ridge pattern already transitioned to a zonal flow
pattern this front will bring precipitation across the east side
with the front dissipating over the east side into Friday morning.

Friday will see a break in the action as an upper trough deepens
offshore ahead of the next system moving in Saturday, but with a
cooler air mass over the region with 700 mb winds from the west
leading up to the morning temperatures will be notably cooler than
today's.

This first of a one-two punch of systems this weekend moves in
Saturday on the left exit region of a 110 kt jet, but this mini
jet will move out of the region by late afternoon as the warm
front shifts to the north of the area. The timing of this system
has been delayed with the ec and the nam, with the GFS being the
most aggressive and have shifted the timing back to match cl;over
to the ec. As the front, now showing to move in Sunday, approaches
the east side and higher elevations 700 mb winds are looking to be
very strong with most models showing in excess of 70 kt Sunday
morning.

Sunday looks to be we throughout the day across the region, but
snow levels will remain high through the evening. However, by
Monday morning snow level still look to drop to pass levels in the
cascades and siskiyou summit and possibly black butte summit. This
will happen at the tail end of the front and snow amounts should
not be high as the bulk of the front and the heaviest
precipitation will have already moved through.

Aviation 23 12z TAF cycle... Areas of MVFR CIGS and local ifr cigs
near the coast will move inland this afternoon, mostly on the west
side north of the umpqua divide and over most of the west side and
into the klamath basin overnight. Low level wind shear will persist
through the early morning at all 4 terminals. -sven

Marine Updated 300 am pst Thursday 23 nov 2017... Steep to very
steep seas will persist this morning, remain steep this afternoon
and evening, then ease below advisory levels overnight. South to
southwest winds will also ease during this time frame. Calmer
conditions are expected Friday through Friday night. Then, another
frontal system will bring strengthening south winds Saturday, with
gales possible and very steep seas Saturday night. Seas will remain
high and steep Sunday into early next week. -spilde

Mfr watches warnings advisories
Or... Wind advisory from 10 am this morning to 10 pm pst this evening
for orz030-031.

Ca... Wind advisory from 10 am this morning to 10 pm pst this evening
for caz085.

Pacific coastal waters... Small craft advisory for hazardous seas until 10 pm pst this
evening for pzz350-356-370-376.

Hazardous seas warning until 10 am pst this morning for
pzz350-370.

Sbn sbn sbn


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CECC1 - 9419750 - Crescent City, CA 68 mi47 min SSE 14 G 17 58°F 54°F1018.5 hPa (-0.4)
HBYC1 - 9418767 - North Spit, CA 75 mi71 min ESE 2.9 G 2.9 58°F 56°F1020.1 hPa
46244 - Humboldt Bay, North Spit, CA 77 mi47 min 55°F8 ft

Wind History for Crescent City, CA
(wind in knots)    EDIT      (on/off)   Help
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Mount Shasta, CA37 mi51 minN 010.00 miA Few Clouds46°F44°F93%1023 hPa

Wind History from MHS (wind in knots)
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Last 24hrCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalm
1 day agoCalmCalmCalmCalmCalmCalm4CalmCalmE3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmE4CalmCalm
2 days agoE12
G17
SE5E9
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E4E8E6E43E4E4CalmCalmCalmCalmCalmCalmCalmCalmSW3Calm3CalmSE3--

Tide / Current Tables for Trinidad Harbor, California
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Trinidad Harbor
Click for Map
Thu -- 03:10 AM PST     5.48 feet High Tide
Thu -- 07:13 AM PST     Sunrise
Thu -- 08:11 AM PST     3.69 feet Low Tide
Thu -- 11:18 AM PST     Moonrise
Thu -- 01:42 PM PST     6.02 feet High Tide
Thu -- 04:51 PM PST     Sunset
Thu -- 08:54 PM PST     0.49 feet Low Tide
Thu -- 09:23 PM PST     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
3.44.45.25.55.44.94.43.93.73.84.24.85.55.965.64.83.72.51.40.70.50.81.6

Tide / Current Tables for Arcata Wharf, Humboldt Bay, California
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Arcata Wharf
Click for Map
Thu -- 04:06 AM PST     5.57 feet High Tide
Thu -- 07:13 AM PST     Sunrise
Thu -- 09:05 AM PST     3.77 feet Low Tide
Thu -- 11:18 AM PST     Moonrise
Thu -- 02:37 PM PST     6.34 feet High Tide
Thu -- 04:52 PM PST     Sunset
Thu -- 09:23 PM PST     Moonset
Thu -- 09:53 PM PST     0.37 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.33.54.55.35.65.44.94.443.83.94.55.25.96.36.35.953.82.51.40.60.40.8

Weather Map and Satellite Images
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Weather Map
wmap_P
IR Satellite Image from GEOS
west_satellite

GOES Local Image of CentralWestCoast    EDIT
Geos

Wind Forecast for Medford, OR (9,2,3,4)
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Ground Weather Radar Station Medford, OR
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weather_mapweather_map weather_map

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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.