Saturday, December16, 2017 L-36.com


Marine Weather and Tides
Bunker Hill, 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 7:42AMSunset 4:43PM Saturday December 16, 2017 4:17 PM PST (00:17 UTC) Moonrise 6:03AMMoonset 4:05PM Illumination 2% Phase: Waning Crescent; Moon at 28 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- 202 Pm Pst Sat Dec 16 2017
Tonight..N wind 10 kt...veering to E in the late evening and overnight. Wind waves 2 ft or less. Mixed swell nw 4 to 5 ft at 12 seconds and nw 4 ft at 7 seconds. Slight chance of showers through the night. Slight chance of rain.
Sun..E wind 5 kt...veering to S early in the afternoon, then... Veering to nw late in the afternoon. Wind waves 2 ft or less. NW swell 3 to 5 ft at 10 seconds.
Sun night..NW wind 5 kt...veering to se after midnight. Wind waves 2 ft or less. SWell nw 6 to 7 ft at 11 seconds.
Mon..SE wind 5 kt. Wind waves 2 ft or less. SWell W 6 to 7 ft.
Mon night..W wind 5 kt...backing to S after midnight. Wind waves 2 ft or less. NW swell 5 to 6 ft.
Tue..S wind 15 kt...rising to 20 to 25 kt in the afternoon. Wind waves 3 ft...building to 6 to 7 ft in the afternoon. W swell 8 to 9 ft...shifting to the nw 10 ft in the afternoon. Rain likely.
Tue night..SW wind 15 kt...veering to W after midnight. Wind waves 6 to 7 ft...subsiding to 5 ft after midnight. SWell nw 10 to 11 ft. Showers.
Wed..NW wind 15 to 20 kt...veering to N 10 kt in the evening, then...veering to ne after midnight. Wind waves 7 ft...becoming 2 ft or less. SWell nw 12 ft.
Thu..NE wind 10 kt. Wind waves 2 ft or less... Becoming 3 ft in the afternoon and evening, then...becoming 2 ft or less after midnight. SWell nw 10 ft... Subsiding to nw 6 ft.
PZZ300 202 Pm Pst Sat Dec 16 2017
Synopsis for the southern oregon coastal waters..Offshore high pressure and a coastal thermal trough will support gusty north winds south of gold beach into early Sunday morning. The trough will weaken late Sunday into Monday, causing winds to diminish. Winds will shift to southerly Monday night ahead of a cold front. The front will sweep through the waters Tuesday into Tuesday evening with high seas and advisory strength winds likely. Moderate to heavy northwest swell will follow Tuesday night into Wednesday night. A thermal trough will develop Thursday, bringing moderate north winds.

7 Day Forecast for Marine Location Near Bunker Hill, OR
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location: 43.36, -124.13     debug


Area Discussion for - Medford, OR
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Fxus66 kmfr 162259
afdmfr
area forecast discussion
national weather service medford or
259 pm pst Sat dec 16 2017

Low elevation snow possible on Tuesday night...

Short term Tonight through Tuesday night... Satellite
observations show that the fog has lifted across most of our
valleys. Additionally, some mixing is occurring across southern
oregon and northern california which will somewhat help air
quality concerns for today. As soon as the Sun sets, however,
mixing is expected to all but cease for the next couple of days.

As a result, have issued an air stagnation advisory for the inland
valleys of oregon beginning at 7 pm through 7 am on Tuesday.

Limited mixing may occur during this time, but confidence is
higher that stagnation will occur.

In addition to the stagnation, high pressure in our area will
create the possibility for fog and maybe even freezing fog across
many of the valleys west of the cascades. That being said, cirrus
clouds are expected to move in overnight; and this could limit fog
or freezing fog. Have decided to let the night shift determine if
they will issue any advisories for fog.

The next system is going to come in Tuesday evening through
Wednesday with the bulk of the precipitation occurring late
Tuesday evening. Although total precipitation amounts are typical
for a december storm, snow levels are forecast to plummet shortly
after the front passes through. This could set us up for some low
elevation snow showers Tuesday night. Snow levels will start
around 4500 to 5000 feet with the precipitation and quickly drop
to 1800 to 2300 feet late Tuesday night. The highest amounts will
be in the cascades 8 to 12 inches.

When it comes to low elevation snow, it really depends on when the
snow levels drop as opposed to when the precipitation ends. For the
passes, will see less snowfall, but they will likely continue to
see some impacts. Right now, siskiyou summit is forecast to
receive 3 to 6 inches; the lower passes on interstate 5 between
grants pass and roseburg could see 2 to 4 inches. Additionally,
highway 140 could see 6 to 9 inches. East of the cascades and in
california from interstate 5 and west, only 1 to 3 inches of snow
is expected with the exception for portions of highway 97 near
chemult which could see 3 to 6 inches. Right now, it looks like
highway 199 will not be impacted by snow, but as long as the snow
levels hover around that level, a few flakes are not out of the
question, particularly if a heavier snow shower occurs.

Furthermore, strong, gusty winds are expected with this storm
across areas east of the cascades. Moderate rain across the
coastal mountains and west of the cascades is expected. That being
said, these aspects of this system are more typical for this time
of year. They are just getting notoriety since it has been a
while since this area has seen anything other than a ridge of high
presure. -schaaf

Long term Wednesday through Saturday night... We'll be on the
back side of the departing system Wednesday morning, with
temperatures dropping and showers continuing into the afternoon.

Snow levels will also continue to fall through the day, reaching
down to about 2000 feet as precipitation ends. Showers should end
by late afternoon, with high pressure quickly building in behind
the departing trough.

With high pressure regaining control, we should quickly return to
conditions similar to that which we saw last week. However, with
strong north flow late Wednesday into Thursday, snow on the ground,
and mostly clear skies, temperatures should get rather cold. Single
digits lows, some approaching zero, should be common across the east
side valleys, while west side valleys are likely to drop into the
low 20s or teens. These cold temperatures west of the cascades will
be compounded by freezing fog, which will not only reduce
visibility, but also create icy surfaces, leading to potentially
hazardous travel conditions. As a result, freezing fog advisories,
concurrent with a stagnant air advisory, may be necessary at times
late next week. With no change in the expected pattern heading into
the weekend, it seems as if we may be stuck with the cold and fog
for the remainder of the forecast term. -bpn

Aviation 6 18z TAF cycle... Along the coast,VFR conditions
will continue at least through this evening. Late tonight into
tomorrow morning, there is a possibility of fog forming and
bringing conditions down, however current thinking is the offshore
winds and a midlevel cloud deck will keep conditions MVFR toVFR.

West of the cascades, morning fog is clearing, but may not clear
from the umpqua basin until this afternoon. Conditions tomorrow
morning will be slightly more stable than this morning, so expect
a return to ifr to lifr vis tonight, with thickest fog again
around sunrise. Clear skies andVFR will continue east of the
cascades. -msc

Marine Updated 200 pm pst Saturday 16 dec 2017... Offshore high
pressure and a coastal thermal trough will support gusty north
winds south of gold beach into early Sunday morning. The trough
will weaken late Sunday into Monday, causing winds to diminish.

Winds will shift to southerly Monday night ahead of a cold
front.The front will sweep through the waters Tuesday into Tuesday
evening with high seas and advisory strength winds likely.

Moderate northwest swell will follow Tuesday night into Wednesday
night. A thermal trough will develop Thursday, bringing moderate
north winds. -msc

Mfr watches warnings advisories
Or... Air stagnation advisory from 7 pm this evening to 8 am pst
Tuesday for orz023-024-026.

Air stagnation advisory from 7 pm this evening to 8 am pst
Tuesday for orz029>031.

Ca... Air stagnation advisory from 7 pm this evening to 8 am pst
Tuesday for caz084.

Pacific coastal waters... None.

Bms bpn msc


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
CHAO3 - 9432780 - Charleston, OR 11 mi47 min N 5.1 G 8 51°F1027.1 hPa
46260 18 mi167 min 53°F7 ft
46261 28 mi167 min 52°F7 ft
46229 - UMPQUA OFFSHORE, OR (139) 36 mi54 min 53°F7 ft
PORO3 - 9431647 - Port Orford, OR 47 mi47 min N 6 G 13 53°F 52°F1026 hPa

Wind History for Charleston, OR
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Southwest Oregon Regional Airport, OR8 mi21 minNNW 510.00 miOvercast50°F43°F77%1027.3 hPa

Wind History from OTH (wind in knots)
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Last 24hrCalmS3CalmN3SE5CalmSE4SE5SE5SE8SE6SE7SE9SE6SE7SE5SE4SE6SE4SE3CalmN5N6N5
1 day agoSE3SE5S3CalmSE3SE4CalmSE4SE7SE3SE4SE7SE4SE7CalmSE7SE5SE6SE8CalmCalmCalmCalmCalm
2 days agoCalmCalmN3N3CalmSW3Calm--E3CalmCalmW3SE5SE8CalmCalmCalmS3W4CalmNW3W4CalmW6

Tide / Current Tables for Coos Bay, Oregon
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Coos Bay
Click for Map
Sat -- 12:37 AM PST     6.17 feet High Tide
Sat -- 05:49 AM PST     2.72 feet Low Tide
Sat -- 06:03 AM PST     Moonrise
Sat -- 07:43 AM PST     Sunrise
Sat -- 11:52 AM PST     7.97 feet High Tide
Sat -- 04:05 PM PST     Moonset
Sat -- 04:41 PM PST     Sunset
Sat -- 06:45 PM PST     -0.15 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
66.15.64.73.72.92.73.24.25.56.77.787.56.34.62.71.10.1-0.10.51.73.14.6

Tide / Current Tables for Empire, Coos Bay, Oregon
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Empire
Click for Map
Sat -- 05:11 AM PST     2.72 feet Low Tide
Sat -- 06:03 AM PST     Moonrise
Sat -- 07:43 AM PST     Sunrise
Sat -- 11:03 AM PST     7.14 feet High Tide
Sat -- 04:06 PM PST     Moonset
Sat -- 04:42 PM PST     Sunset
Sat -- 06:07 PM PST     -0.15 feet Low Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
5.55.24.53.83.12.72.93.74.75.96.87.16.85.94.52.91.40.3-0.10.21.12.43.85

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 (19,4,5,8)
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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.