Monday, August21, 2017 L-36.com


Marine Weather and Tides
Langlois, 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 6:28AMSunset 8:10PM Monday August 21, 2017 8:59 AM PDT (15:59 UTC) Moonrise 5:22AMMoonset 7:21PM Illumination 0% Phase: New Moon; Moon at 29 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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This is a Weather Statement Zone, please check the Date to see if it has expired
PZZ310 Coos bay bar- coastal waters from cape blanco or to pt. St. George ca out 10 nm- waters from cape blanco or to pt. St. George ca from 10 to 60 nm- 134 pm pdt Wed may 29 2013 a long-duration moderate to strong north wind event is expected to last from this weekend into early next week. Winds should begin to increase Friday into Saturday...peaking Sunday with storm force wind gusts possible. Very steep and hazardous waves will accompany this wind event and mariners should prepare for dangerous conditions at sea. The strongest winds and highest seas will occur beyond 5 nm from shore.
PZZ300 817 Am Pdt Mon Aug 21 2017
Synopsis for the southern oregon coastal waters..High pressure remains offshore but a weakening thermal trough along the coast will result in lesser wind and lower seas today versus Sunday, especially south of cape blanco. Then, conditions remain fairly consistent through Wednesday. A cold front moves through late Wednesday followed by a strengthening thermal trough Thursday and Friday.

7 Day Forecast for Marine Location Near Langlois, OR
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location: 42.89, -124.55     debug


Area Discussion for - Medford, OR
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Fxus66 kmfr 211551
afdmfr
area forecast discussion
national weather service medford or
849 am pdt Mon aug 21 2017

Corrected fire weather discussion
Discussion Today's weather will feature a bit of a transition
in the pattern as a thermal trough along the coast weakens and
onshore flow ensues. This is bringing lower temperatures and
higher humidity to coastal areas (and lighter winds to the coast)
and eventually inland over the next several days. Inland areas
today will likely see the hottest temperatures of the week as the
thermal trough moves inland. Smoke transport will be shifting
directions today with midlevel southerly flow and low level west
to northwesterly flow after days of persistent northerly to
northeasterly flow.

Tomorrow, moisture and instability increases from the south as an
upper level low over southern california pushes disturbances from
south to north over portions of the forecast area. We have a fire
weather watch at rfwmfr out for tomorrow afternoon and evening for
portions of the forecast area. A holistic view of the guidance
this morning suggests highest confidence in thunderstorm activity
over northern california. Uncertainty in thunderstorm coverage
decreases as one GOES north and west into oregon. Smoke will
undoubtedly introduce additional uncertainty because it will
influence surface heating and resultant instability.

Please see the previous area and fire weather discussions below for
more details on the week's weather pattern.

Aviation 21 12z TAF cycle... High pressure prevails with primarily
vfr conditions over the region. Ifr CIGS and visibility in fog along
the coast will erode some but may last all day in some areas as an
onshore wind prevails in the afternoon. Inland,VFR weather will be
the rule except for possible ifr vsby in smoke. Upper flow
transition to south today presents different possibilities versus
Sunday. SomeVFR vsby in smoke is again possible at kmfr and perhaps
later afternoon at klmt, but uncertainty is considerable. Stavish

Marine Weaker northerlies on tap today as thermal trough has
weakened and will shift inland this afternoon. Remaining hazardous
seas for a while however. Similar winds Tuesday and Wednesday but
lower seas. Thermal trough strengthens for Thursday and Friday with
north gales looking likely. Stavish

Fire weather Updated 400 am pdt Monday, 21 august 2017... Thermal
trough shifting inland today normally signals the hottest inland day
of the stretch and expect temperatures to be up several degrees
where smoke isn't a limiting factor. Broad onshore gradient in the
late day will produce west to northwest flow all west side areas
with gustiness peaking 5-6pm. Haines 4-5 also signals good
atmospheric support for active fire development. Historically,
inland fires have become more active as the thermal trough moves
inland from the coast.

Thunderstorm chances look appreciable Tuesday afternoon and night
and fire weather watch for lal3 coverage has been issued. Zones 622
and 617 have minimal areas in the watch. Higher pw arriving suggests
wet storms but the transition should produce a mix of wet and dry.

Storm wetness not a factor in watch warning decisions here however,
just lal. Look for increased gustiness Wednesday as upper trough
approaches from the northwest and cold front pushes through. With
drier air arriving from the west, this potential storm trigger may
not produce as many storms as previously envisioned on wed.

Stavish

Prev discussion issued 600 am pdt Mon aug 21 2017
update... Updates to marine, aviation, and fire discussions. Ms
discussion... The sky condition varies across the area with low
clouds at the coast roughly from CAPE blanco northward and into
the coquille valley, a band of high clouds over south central
oregon and northern california, and variable thickness of wildfire
smoke. The low clouds should thin at least partially before this
morning's solar eclipse reaches its maximum obscuration at 1015 am
at north bend. The high clouds are also expected to thin somewhat
this morning. Smoke is thinnest over lake, modoc, coos, and
western douglas counties. Other times of maximum obscuration
include 1017 am along the i-5 corridor, 1018 am at klamath falls,
and 1020 am at lakeview. After the eclipse, mid and high level
clouds are expected to increase over northern california as a
closed low offshore from southern california spreads increasing
mid-level moisture northward.

Northeast winds at the coast have weakened substantially tonight
compared to last night but they will continue until around 9 am
before a switch to light northwest winds brings a welcome
increase of humidity during the day to the brookings area. While
multiple complexes of wildfires continue in our area, there is a
risk of new fire starts due to lightning Tuesday afternoon through
Wednesday evening. A fire weather watch pdxrfwmfr has been
issued with continued very good model agreement in the highest
risk during Tuesday afternoon and evening. A slight chance to
chance of thunderstorms is forecast roughly from the cascade and
siskiyou mountains of southwest oregon eastward and southward.

Southwest to west steering flow is likely to bring a slightly
higher risk to siskiyou county and southern klamath county compared
to the remainder of the aforementioned area. Storms will be
relatively slow moving at around 5 to 15 mph.

The risk of thunderstorms will diminish but not altogether end
late Tuesday night with the possibility of embedded shortwaves
continuing convection.

The scenario for Wednesday will be a bit different and leads to
diminished confidence in the forecast. A trough approaching
british columbia will bring a stronger southwest to west 700 mb
steering flow of 10 to 20 mph and also the possibility of a focus
for thunderstorms east of our area... In eastern oregon. The
probability of thunderstorms in our area will be higher east of
the cascades. The approach of the trough and an associated cold
front will bring gusty afternoon westerly winds... Strongest on the
east side. A slight chance of late night and early Thursday
morning drizzle or very light showers exists for coos and western
douglas counties with the push inland of a relatively deep marine
layer.

The trough will push into the pacific northwest on Thursday and
bring a stable air mass into the region. High pressure building
will bring a strong warming and drying trend Friday through the
weekend into early next week. -dw\

Mfr watches warnings advisories
Or... Fire weather watch from Tuesday afternoon through Tuesday
evening for orz617-621>625.

Ca... Fire weather watch from Tuesday afternoon through Tuesday
evening for caz280>282-284-285.

Pacific coastal waters... Small craft advisory until 5 am pdt Tuesday
for pzz350-356-370-376. Hazardous seas warning until 5 pm
pdt this afternoon for pzz356-376.

Nsk dw mts


Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
PORO3 - 9431647 - Port Orford, OR 11 mi41 min NW 14 G 18 54°F 47°F1015.1 hPa
46015 - Port Orford - 16 NM West of Port Orford, OR 18 mi29 min N 23 G 27 52°F 50°F1017 hPa52°F
46128 28 mi59 min 12 49°F1018.1 hPa (+0.4)
CHAO3 - 9432780 - Charleston, OR 34 mi83 min NE 9.9 G 13 55°F1017.7 hPa

Wind History for Port Orford, OR
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Southwest Oregon Regional Airport, OR41 mi63 minNNW 40.25 miFog/Mist51°F51°F100%1018.1 hPa

Wind History from OTH (wind in knots)
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1 day agoN8NW10N18N20
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N16N6N10CalmN4NW5NW6N5NW4N5
2 days agoCalmN7N15N20N23
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Tide / Current Tables for Port Orford, Pacific Ocean, Oregon
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Port Orford
Click for Map
Mon -- 06:14 AM PDT     -1.39 feet Low Tide
Mon -- 06:21 AM PDT     Moonrise
Mon -- 06:31 AM PDT     Sunrise
Mon -- 11:31 AM PDT     New Moon
Mon -- 12:43 PM PDT     6.70 feet High Tide
Mon -- 06:16 PM PDT     1.70 feet Low Tide
Mon -- 08:10 PM PDT     Sunset
Mon -- 08:20 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
7.96.95.230.9-0.6-1.4-1.101.83.85.46.56.76.14.93.52.31.71.92.94.467.3

Tide / Current Tables for Bandon, Coquille River, Oregon
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Bandon
Click for Map
Mon -- 06:20 AM PDT     Moonrise
Mon -- 06:30 AM PDT     Sunrise
Mon -- 06:32 AM PDT     -0.94 feet Low Tide
Mon -- 11:31 AM PDT     New Moon
Mon -- 12:54 PM PDT     6.59 feet High Tide
Mon -- 06:34 PM PDT     1.58 feet Low Tide
Mon -- 08:10 PM PDT     Sunset
Mon -- 08:20 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
7.87.15.63.71.70.1-0.8-0.801.63.45.16.26.66.15.13.72.51.71.72.43.75.46.8

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

GOES Local Image of PacificNorthwest    EDIT
Geos

Wind Forecast for Medford, OR (11,2,3,4)
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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.