Thursday, August17, 2017 L-36.com


Marine Weather and Tides
Philomath, 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 6:17AMSunset 8:17PM Wednesday August 16, 2017 11:00 PM PDT (06:00 UTC) Moonrise 12:04AMMoonset 3:03PM Illumination 26% Phase: Waning Crescent; Moon at 25 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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PZZ255 Coastal Waters From Cascade Head To Florence Or Out 10 Nm- Waters From Cascade Head To Florence Or From 10 To 60 Nm- 901 Pm Pdt Wed Aug 16 2017
.small craft advisory for winds in effect from Thursday afternoon through late Thursday night...
Tonight..N wind 10 to 15 kt with gusts to 20 kt. Wind waves N 3 ft at 5 seconds. W swell 7 ft at 11 seconds. Patchy fog after midnight.
Thu..N wind 15 to 20 kt. Gusts to 25 kt in the afternoon. Wind waves N 3 ft at 5 seconds. NW swell 6 ft at 12 seconds. Patchy morning fog.
Thu night..N wind 15 to 20 kt with gusts to 25 kt. Wind waves N 3 ft at 6 seconds. NW swell 7 ft at 12 seconds. Patchy fog after midnight.
Fri..N wind 10 to 15 kt with gusts to 20 kt. Wind waves N 3 ft at 4 seconds. W swell 5 ft at 11 seconds.
Fri night..N wind 20 to 25 kt, easing to 15 to 20 kt after midnight. Wind waves N 3 ft at 5 seconds. W swell 5 ft at 11 seconds.
Sat..N wind 15 to 20 kt with gusts to 25 kt. Wind waves 3 ft. W swell 6 ft.
Sat night..N wind 20 to 25 kt with gusts to 30 kt. Wind waves 5 ft. W swell 6 ft.
Sun..N wind 20 to 25 kt. Wind waves 5 ft. W swell 7 ft.
Mon..N wind 20 to 25 kt. Wind waves 5 ft. W swell 7 ft.
PZZ200 901 Pm Pdt Wed Aug 16 2017
Synopsis for southern washington and northern oregon coast.. High pres will persist over the coastal waters through the weekend. Thermal low pres over N ca/sw or will keep northerly winds in place, with breezy afternoon/evening winds.

7 Day Forecast for Marine Location Near Philomath, OR
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location: 44.53, -123.34     debug


Area Discussion for - Portland, OR
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Fxus66 kpqr 170402
afdpqr
area forecast discussion
national weather service portland or
901 pm pdt Wed aug 16 2017

Synopsis Persistent surface high pressure over the NE pacific
combined with low pressure east of the cascades will maintain onshore
winds the next several days. Slight variations of the upper level
pressure pattern will result in slight variations in how expansive
nighttime morning clouds will be through the weekend. The clouds
should clear in the afternoons with temperatures remaining near the
seasonal normals. An upper level ridge is expected early next week
for less clouds and slightly warmer temperatures.

Short term Tonight through Saturday... Satellite imagery shows
extensive clouds over the NE pacific this evening beginning to move
over the SW washington and NW oregon coast and coast range. These
clouds seem to be remnants of an old front traveling across the
pacific. Onshore winds will continue to transport these clouds
towards the washington and oregon coast tonight filling in these
areas with low clouds. A passing weak upper level shortwave trough
north of the area has deepened the marine layer enough for some light
drizzle or rain to reach the coast.

Some of these clouds to move through the coast range gaps towards the
willamette valley late tonight into Thursday morning. There is also a
possibility for clouds to form along the south washington and north
oregon cascade foothills late tonight and expand south along the
foothills into parts of the north and central willamette valley
Thursday morning. The best chance for valley clouds Thursday morning
is for the north and central willamette valley with the least
confidence for clouds in the south willamette valley. The clouds
should clear in the afternoon with inland temperatures warming to
near the seasonal normals (low 80s north, and mid 80s south).

There will be little change in the weather Thursday night and Friday
as another upper level trough passes by to the north and low-level
onshore winds persist. The marine layer should deepen late Friday
night and early Saturday morning as an upper level trough develops
over NW oregon for a better chance for more widespread clouds
Saturday morning. Therefore the temperatures Saturday afternoon will
be slightly cooler. ~tj

Long term No changes. Previous discussion follows... Saturday night
through Wednesday. Overall, rather benign pattern with varying
degrees of onshore flow for the weekend. Weak system will pass to
over region on Saturday, but seems system is splitting. This will
keep local mostly dry, with threat of any showers staying well north
over british columbia. But this system will allow for increased
onshore flow, with some spotty drizzle along the the coast. Mainly,
expect more in way of clouds around region for sat, and again later
sat night into sun.

Now, for the big question... What about Monday? at this time, looks
like will slip back into the pattern we have had the past few days.

This will keep threat of late night and morning clouds along the
coast, mainly to north of newport. But, interior looks to remain
mostly clear on Mon through can not rule a few clouds along and to
north of the columbia river prior to 10 am. Temperatures staying
near seasonable.

But changes appear in store for the region for Tue and beyond. Upper
low off calif coast will start drifting northward, bringing a return
to southerly flow over the region. This will allow for increasing
threat of afternoon evening thunderstorms over the oregon cascades.

Temperatures still near seasonable levels. rockey.

Aviation A decaying frontal boundary will bring increased
clouds onshore later tonight into Thu morning. Ifr conditions
with drizzle have already developed at kast, and expect the
clouds to push onto the rest of the coast by around midnight. The
clouds also appear on satellite to be pushing fairly quickly up
the lower columbia, so expect they will easily reach the northern
interior TAF sites. The latest model guidance suggests MVFR
conditions reach kpdx, kttd, and khio by around 09z, which seems
reasonable. Confidence is lower as to conditions from around
ksle and areas southward. Think ksle will see a few hours of MVFR
early Thu morning, but keug may remainVFR. The clouds may last
until around midday for the northern interior, and well into the
afternoon at the coast.

Kpdx and approaches... Expect MVFR CIGS to reach the terminal
by about 09z, then linger through most of Thu morning. Clouds
should break up and give way toVFR in the afternoon and evening.

Pyle

Marine High pres will remain centered over the coastal waters
through the weekend, with thermal low pres over northern ca and
south west or. This will maintain the summer-time northerlies,
with breezy winds developing during the afternoon evening hours
over the next several days, especially south of newport. Decided
to drop the small craft advisory for winds in effect this
evening, as the latest obs were not supporting it any more. Have
also issued a new advisory for tomorrow afternoon into early fri
morning. T
seas will generally be around 5 to 7 ft through the period, but
may build to around 8 ft at times as the winds increase. Seas may
also become steep at times during the afternoon evening hours.

Pyle 42

Pqr watches warnings advisories
Or... None.

Wa... None.

Pz... Small craft advisory for winds from 1 pm Thursday to 5 am pdt
Friday for coastal waters from cascade head or to florence
or out 60 nm.

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
SBEO3 - 9435380 - South Beach, OR 38 mi43 min NNW 7 G 9.9 61°F 53°F1020.6 hPa
NWPO3 - Newport, OR 39 mi61 min N 13 G 15 55°F 1021 hPa (+0.9)
46050 - STONEWALL BANKS - 20NM West of Newport, OR 63 mi31 min N 7.8 G 9.7 58°F 57°F1021.4 hPa58°F

Wind History for South Beach, Yaquina River, OR
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Corvallis, Corvallis Municipal Airport, OR3 mi66 minNW 510.00 miFair66°F53°F64%1019.6 hPa

Wind History from CVO (wind in knots)
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Last 24hrNW5W5CalmNW3NW3NW3NW4CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmN5NW6NW6W7W6W7NW6
1 day agoCalmNW4NW4CalmCalmCalmCalmCalmCalmCalmCalmNE3NE3CalmN4N3NE4CalmCalmNE3NW5NW5W5W5
2 days agoNW4NW3CalmCalmNW3NW3CalmCalmCalmCalmCalmNE3NE3NE4NE4N4CalmNE3E3NE5NE4CalmNW4Calm

Tide / Current Tables for Toledo, Yaquina Bay and River, Oregon
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Toledo
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Thu -- 01:55 AM PDT     Moonrise
Thu -- 04:13 AM PDT     0.05 feet Low Tide
Thu -- 06:21 AM PDT     Sunrise
Thu -- 10:38 AM PDT     6.01 feet High Tide
Thu -- 03:48 PM PDT     2.60 feet Low Tide
Thu -- 05:09 PM PDT     Moonset
Thu -- 08:17 PM PDT     Sunset
Thu -- 09:52 PM PDT     8.59 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
5.13.41.80.60.10.31.22.545.25.965.44.53.52.82.63.14.25.77.28.28.68.1

Tide / Current Tables for Drift Creek, Alsea River, Oregon
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Drift Creek
Click for Map
Thu -- 01:56 AM PDT     Moonrise
Thu -- 04:49 AM PDT     -0.08 feet Low Tide
Thu -- 06:21 AM PDT     Sunrise
Thu -- 10:19 AM PDT     4.52 feet High Tide
Thu -- 04:32 PM PDT     1.44 feet Low Tide
Thu -- 05:09 PM PDT     Moonset
Thu -- 08:17 PM PDT     Sunset
Thu -- 09:42 PM PDT     6.45 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
42.81.60.70.1-0.10.51.62.83.94.54.443.32.61.91.51.52.33.75.16.26.46.1

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 Portland, OR (2,6,7,8)
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Ground Weather Radar Station Portland, 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.