Thursday, June22, 2017 L-36.com


Marine Weather and Tides
Corvallis, OR

Version 3.4
What's New / NOTES
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 5:26AMSunset 9:03PM Thursday June 22, 2017 1:33 PM PDT (20:33 UTC) Moonrise 3:30AMMoonset 6:29PM 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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PZZ255 Coastal Waters From Cascade Head To Florence Or Out 10 Nm- 857 Am Pdt Thu Jun 22 2017
.small craft advisory for winds in effect through Friday evening...
.small craft advisory for hazardous seas in effect through this evening...
Today..N wind 20 to 25 kt with gusts to 30 kt. Wind waves N 6 ft at 7 seconds. NW swell 5 ft at 9 seconds. Patchy fog in the morning.
Tonight..N wind 20 to 25 kt. Gusts to 30 kt in the evening. Wind waves N 6 ft at 7 seconds. NW swell 4 ft at 9 seconds. Patchy fog after midnight.
Fri..N wind 20 to 25 kt. Wind waves N 5 ft at 6 seconds. NW swell 4 ft at 8 seconds. Patchy morning fog.
Fri night..N wind 20 to 25 kt, easing to 10 to 15 kt after midnight. Wind waves N 4 ft at 6 seconds. NW swell 4 ft at 9 seconds.
Sat..NE wind 5 to 10 kt, becoming N 10 to 15 kt in the afternoon. Wind waves ne 2 ft at 4 seconds. SW swell 3 ft at 16 seconds.
Sat night..N wind 10 to 15 kt, becoming se 5 to 10 kt after midnight. Wind waves N 3 ft at 4 seconds, shifting to the se 2 ft at 4 seconds after midnight. W swell 4 ft at 15 seconds.
Sun..S wind 5 to 10 kt. Wind waves 2 ft. W swell 4 ft.
Mon..SW wind 5 to 10 kt. Wind waves 2 ft. W swell 5 ft.
PZZ200 857 Am Pdt Thu Jun 22 2017
Synopsis for southern washington and northern oregon coast.. High pressure over the northeast pacific and thermal low pressure over the northern california and southern oregon coastal waters holds through Saturday. Weak low pressure will impact the waters Sunday and Monday.

7 Day Forecast for Marine Location Near Corvallis, OR
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location: 44.56, -123.27     debug


Area Discussion for - Portland, OR
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Fxus66 kpqr 221617
afdpqr
area forecast discussion
national weather service portland or
916 am pdt Thu jun 22 2017

Synopsis High pressure aloft over the forecast area will
strengthen through the weekend. A thermally-induced surface trough
and resultant offshore low-level flow will result in hot temperatures
Friday through the weekend. A southwest marine surge occurs along the
central coast Saturday night and Sunday. A deeper marine push occurs
Monday for much cooler temperatures inland. Strong onshore flow
continues Tuesday through mid-week, followed by a gradual warming
trend late in the week.

Short term Thursday through Saturday... No major changes to the
fcst this morning. Visible satellite shows some patchy clouds over
the coastal waters, but otherwise skies are clear across the cwa. The
12z ksle sounding came in with an 850 mb temp of around 12.5 c,
compared to 10 c yesterday afternoon, which confirms that the air
mass is continuing to gradually warm. Expect afternoon highs to reach
into the upper 70s to low 80s over the interior lowlands today, with
60s at the coast. There will also again be breezy NW winds developing
later this afternoon and evening. So we will have one more pleasant
and seasonal day before a significant hot spell begins Fri and
continues through the weekend.

A strong upper level ridge in excess of 590 dm anchored over the ne
pac will begin to shift closer to the coast fri, leading to a steady
warming of the air mass over the region. A thermally-induced surface
trough will strengthen along the coast tonight and expect subsidence
inversions to become more pronounced in the oregon coast range and
all cascades and foothills areas. 850 mb temps Fri are fcst to climb
to near or slightly above 20c. Offshore low-level flow develops fri
as well, which will help to boost temps through downslope
compression. Even the coast should get into the act fri, with 75 to
80 possible, especially along the N oregon and S washington coast.

The thermally-induced surface trough settles over the coast, oregon
coast range and SW washington willapa hills Fri night and sat. Models
in general agreement showing 850 mb temps of 22 to 24 c by 00z sun.

Coupled with continued offshore flow, inland valley temps expected to
be in the mid to upper 90s. There is also the potential for places
like kast and ktmk to get close to 90 deg sat. The latest NAM run
hints at a south flow reversal along the south coast late sat
afternoon, possibly reaching florence by 00z sun. Pyle weishaar

Long term Saturday night through Thursday... The NAM shows the
south coastal surge moving up the coastline Sat night, getting close
to ktmk by 12z sun. Some of this marine air will likely seep into the
central oregon coast range valleys. However, light offshore low-level
flow continues elsewhere, with strong subsidence inversions remaining
in place for the cascades. The operational GFS and ECMWF show 850 mb
temps Sun peaking around 24c. Went a touch lower Sun inland compared
to sat. The surface thermal trough may remain over the interior
valleys and near the cascades Sun so MAX temps could end up slightly
warmer than forecast. The ECMWF hints at some mid-level moisture
spreading north from n. Cal Sun afternoon. Also, the ECMWF has a
short-wave moving over the top of the 500 mb ridge Sun afternoon,
lowering heights just a bit.

Cooling occurs Mon as a short-wave reaches SW oregon and another
disturbance moves into southern b.C.. The ECMWF would suggest the
potential for elevated convection for the cascades and possibly
foothills Mon afternoon, followed by a much deeper marine surge mon
night. The deep marine layer holds Tue and Wed with daytime temps a
little below normal. High pressure strengthens late in the week for a
return to seasonal conditions. Weishaar

Aviation Vfr conditions through the period. North winds will
increase in the afternoon in most locations, but will be
especially gusty (25 to 30 kt) along the coast south of ktmk.

Kpdx and approaches...VFR with clear skies today and tonight.

North winds will increase this afternoon with 20 to 25 kt gusts
possible through the early evening. ~tj bentley

Marine There will be persistent north winds over the waters
through Saturday due to high pressure over the NE pacific and
thermal low pressure over NW california and S oregon. The winds
will be strongest south of cascade head, with frequent gusts of
25 to 30 kt. Winds within 10 nm of the coast will weaken during
the nights, and become offshore through the early mornings. The
winds will build steep and choppy seas that will reach heights of
8 to 10 feet south of cascade head at times.

Weak low pressure develops across the waters Saturday night and
holds through Monday. This will result in a southerly wind
reversal for the waters mainly within 10 nm. ~tj

Pqr watches warnings advisories
Or... None.

Wa... None.

Pz... Small craft advisory for winds until 5 am pdt Saturday for
waters from CAPE shoalwater wa to florence or from 10 to
60 nm.

Small craft advisory for winds until 11 pm pdt Friday for
coastal waters from CAPE shoalwater wa to florence or out
10 nm.

Small craft advisory for hazardous seas until midnight pdt
tonight 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 41 mi46 min NNW 8.9 G 18 64°F 49°F1021.5 hPa
NWPO3 - Newport, OR 42 mi34 min N 23 G 26 54°F 1021.7 hPa (-1.3)
46050 - STONEWALL BANKS - 20NM West of Newport, OR 66 mi44 min N 21 G 25 53°F8 ft1021.8 hPa (-1.0)

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, OR4 mi39 minNNE 410.00 miFair79°F46°F32%1021.7 hPa

Wind History from CVO (wind in knots)
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Last 24hrNE5NE6NE5NE6NE6N4N3NW4NW3NW3N4N3N3CalmCalmCalmCalmCalmNE5N6NE4NE7NE5N5
1 day agoNW3NW6W6NW5W6NW7W7W6W5NW5NW5NW4NW3NW3CalmN4NW4CalmNE5N5NE5N5NE6N5
2 days agoNW5NW7NW7W7W6W6NW7W6CalmNW5W6NW4CalmNW3NW3NW4NW3NW4NW3CalmCalmCalmNW3NW3

Tide / Current Tables for Toledo, Yaquina Bay and River, Oregon
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Toledo
Click for Map
Thu -- 04:33 AM PDT     Moonrise
Thu -- 05:30 AM PDT     Sunrise
Thu -- 06:37 AM PDT     -1.21 feet Low Tide
Thu -- 12:57 PM PDT     6.60 feet High Tide
Thu -- 06:16 PM PDT     1.93 feet Low Tide
Thu -- 07:32 PM PDT     Moonset
Thu -- 09:04 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
986.34.11.90.1-1-1.1-0.31.33.356.26.66.25.13.72.622.23.35.178.7

Tide / Current Tables for Drift Creek, Alsea River, Oregon
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Drift Creek
Click for Map
Thu -- 04:33 AM PDT     Moonrise
Thu -- 05:31 AM PDT     Sunrise
Thu -- 07:17 AM PDT     -0.82 feet Low Tide
Thu -- 12:43 PM PDT     5.19 feet High Tide
Thu -- 07:03 PM PDT     1.06 feet Low Tide
Thu -- 07:31 PM PDT     Moonset
Thu -- 09:04 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
6.96.25.13.62.10.7-0.3-0.8-0.50.62.33.94.95.24.8432.11.31.11.63.14.96.6

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 (16,3,4,5)
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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.