Monday, December11, 2017 L-36.com


Marine Weather and Tides
Glasgow, OR

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 7:38AMSunset 4:42PM Monday December 11, 2017 2:38 PM PST (22:38 UTC) Moonrise 1:01AMMoonset 1:33PM Illumination 40% Phase: Third Quarter Moon; Moon at 23 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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PZZ350 Coastal Waters From Florence To Cape Blanco Or Out 10 Nm- 203 Pm Pst Mon Dec 11 2017
Tonight..SE wind 5 kt...backing to E late tonight. Wind waves 2 ft or less. SWell W 4 to 6 ft at 13 seconds.
Tue..E wind 5 kt...backing to N in the afternoon. Wind waves 2 ft or less. Mixed swell W 6 to 7 ft at 13 seconds and sw 5 to 6 ft at 11 seconds.
Tue night..NE wind 5 to 10 kt. Wind waves 2 ft or less. W swell 7 ft at 12 seconds...subsiding to 5 ft at 12 seconds after midnight.
Wed..NE wind 5 to 10 kt. Wind waves 2 ft or less. W swell 4 to 5 ft.
Wed night..NE wind 5 to 10 kt. Wind waves 2 ft or less. SWell W 5 to 6 ft...building to W 8 ft after midnight.
Thu..NE wind 5 to 10 kt. Wind waves 2 ft or less. W swell 7 to 8 ft.
Thu night..NE wind 10 kt. Wind waves 2 ft or less. SWell W 8 ft.
Fri..NW wind 5 kt...becoming 5 to 10 kt in the afternoon and evening, then...becoming variable less than 5 kt after midnight. Wind waves 2 ft or less. SWell W 8 ft... Subsiding to W 6 ft.
Sat..S wind 5 to 10 kt. Wind waves 2 ft or less. W swell 6 ft.
PZZ300 203 Pm Pst Mon Dec 11 2017
Synopsis for the southern oregon coastal waters..Relatively calm conditions are expected through much of the week. A dissipating cold front will brush the outer portions of the coastal waters late today, elevating seas late this afternoon through Tuesday, peaking around 9 feet at 13 seconds. North winds will increase Wednesday as high pressure rebuilds and seas may briefly reach small craft conditions by late Thursday morning. The weather will turn more active this weekend, bringing increased swell and periods of increased southerly winds.

7 Day Forecast for Marine Location Near Glasgow, OR
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location: 43.43, -124.22     debug


Area Discussion for - Medford, OR
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Fxus66 kmfr 112226
afdmfr
area forecast discussion
national weather service medford or
226 pm pst Mon dec 11 2017

Discussion The weather will remain pretty much status quo through
at least Thursday. Therefore we can expect much of the same in terms
of the timing and location of low clouds and fog and freezing fog
will reform. The latest visible image shows low clouds slowly
eroding in the umpqua basin, illinois valley and grants pass area,
but like previous days, it probably won't clear out at all or if it
does only for an hour or two.

As weak front offshore will dissipate as it moves closer to the
coast tonight and have little or no effect on our weather. The ridge
will re-establish along the west coast Tuesday through Thursday
resulting in more of the status quo - morning fog stratus in the
valleys west of the cascades that will have difficulty breaking in
some areas during the afternoons. Overall, it will remain
cool chilly in the valleys with milder conditions along the coast
and at elevations just above the valley floors. -petrucelli

Long term Friday, dec 15th through Monday night, dec 18th...

model agreement is very good with the progression of a shortwave
trough through our forecast area for the first day of this long term
period, through 12z on Saturday, dec 16th. However, thereafter,
model agreement then quickly deteriorates regarding the amplitude of
a short wave ridge that will move in behind this trough, and with
details related to a subsequent trough after that early next week.

By next Wednesday the 20th, however, both models do agree on some
degree of troughing in the pacific northwest, albeit with sizable
significant weather differences. Technically speaking, the expected
changes in the pattern Friday through next Thursday (21st) are
generally consistent with phase 7 effects of the madden julian
oscillation (mjo). This favors a period of precipitation in the
pacific northwest, though this round looks as if it will be light
(below daily averages) compared to climatological normals for mid-
december in our forecast area. Beyond the 21st, there are too many
competing variables to say what's most likely to occur despite
current model leaning toward more high pressure ridging.

More specifically, the trough that's expected to move in Friday is
likely to be enough to break and or significantly weaken the
persistent valley-mountain inversions over the forecast area. While
precipitation amounts look to be less than a tenth of an inch of
water with this trough, cooling aloft along with 30-50 knot 700mb
winds should provide enough mixing to freshen up the air for most,
if not all, areas.

For Saturday the 16th into Sunday the 17th, model guidance has
trended further north with the arrival of the next shortwave trough,
so the forecast has been trended in that direction. High pressure
ridging is likely to try to rebuild from the southwest during this
time period, but a faster flow aloft should result in better
vertical mixing across the forecast area- albeit with passing cloud
cover and some risk of precipitation, mainly over NW section of the
area.

The low presure trough expected early next week has had widely
varying details, in that there are several centers of competing low
pressure over the eastern pacific as the trough arrives. If these
consolidate, the trough will be more significant than if they do
not. General indications are that this trough will be cold enough to
bring snowfall to pass levels or lower on or about Wednesday. How
much and for how long are details we'll be attempting to grasp in
the coming days while this blocking high pressure ridge persists.

Btl

Aviation 11 18z TAF cycle... Going with a persistence forecast,
current lifr conditions are expected to persist throughout the taf
period for portions of the umpqua basin, including krbg, and the
lower portions of the rogue valley around grants pass. Lifr
conditions at kmfr are expected to improve toVFR by late morning,
but confidence is low on exact timing and could persist into the
early afternoon. Lifr conditions are expected to return to the same
locations by late tonight.

Vfr conditions will prevail elsewhere, including the coast and
coastal waters. Br-y

Marine Updated 130 pm pst Monday, dec 11th, 2017... Relatively
calm conditions are expected through much of the week. A dissipating
cold front will brush the outer portions of the coastal waters late
today, elevating seas late this afternoon through Tuesday afternoon.

Seas will peak around 9 feet at 13 seconds Tuesday morning through
afternoon, gradually subsiding overnight into Wednesday. North winds
will increase Wednesday as high pressure rebuilds, but will remain
below small craft advisory levels. Seas may briefly reach small
craft conditions late Thursday morning due to a mix of wind waves
and increased westerly swell, diminishing by Friday morning. The
weather will turn more active this weekend, bringing increased swell
and periods of increased southerly winds. Br-y

Mfr watches warnings advisories
Or... Air stagnation advisory until 10 am pst Friday for
orz023-024-026-029>031.

Ca... None.

Pacific coastal waters... None.



Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CHAO3 - 9432780 - Charleston, OR 8 mi62 min SW 1 G 4.1 50°F1026 hPa
46260 11 mi68 min 53°F5 ft
46261 23 mi68 min 52°F5 ft
46229 - UMPQUA OFFSHORE, OR (139) 29 mi45 min 53°F6 ft

Wind History for Charleston, OR
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Southwest Oregon Regional Airport, OR2 mi42 minN 010.00 miFair59°F41°F51%1026.6 hPa

Wind History from OTH (wind in knots)
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Last 24hrE3SE4SE8SE6SE8SE8SE8SE8SE9SE10SE10SE8SE9SE10SE10SE11SE9SE12SE12SE11SE10SE10SE6Calm
1 day agoCalmSE7SW5SE7SE8SE8SE5SE8SE10SE8SE6SE10SE5SE8SE7SE8SE9SE7SE8S7CalmN4E3S4
2 days agoCalmNE3SE8SE8SE9SE8SE7SE10SE9SE8SE8SE7SE9SE8SE9SE9SE9SE11SE13SE10SE10SE7SE4W6

Tide / Current Tables for Coos Bay, Oregon
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Coos Bay
Click for Map
Mon -- 01:00 AM PST     Moonrise
Mon -- 01:28 AM PST     1.01 feet Low Tide
Mon -- 07:39 AM PST     Sunrise
Mon -- 08:17 AM PST     7.34 feet High Tide
Mon -- 01:32 PM PST     Moonset
Mon -- 02:42 PM PST     1.96 feet Low Tide
Mon -- 04:40 PM PST     Sunset
Mon -- 08:29 PM PST     5.70 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.71.11.11.82.94.35.76.87.37.26.45.342.82.122.43.24.25.15.65.65.14.2

Tide / Current Tables for Charleston, Oregon
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Charleston
Click for Map
Mon -- 12:09 AM PST     1.05 feet Low Tide
Mon -- 01:01 AM PST     Moonrise
Mon -- 06:55 AM PST     7.47 feet High Tide
Mon -- 07:39 AM PST     Sunrise
Mon -- 01:24 PM PST     2.06 feet Low Tide
Mon -- 01:33 PM PST     Moonset
Mon -- 04:41 PM PST     Sunset
Mon -- 07:10 PM PST     5.80 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.11.32.13.44.96.37.27.57.16.24.93.62.62.12.22.73.74.75.45.85.64.93.92.9

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

GOES Local Image of PacificNorthwest    EDIT
Geos

Wind Forecast for Medford, OR (17,4,5,8)
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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.