Thursday, September21, 2017 L-36.com


Marine Weather and Tides
Cascade Locks, 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 6:55AMSunset 7:08PM Thursday September 21, 2017 12:42 PM PDT (19:42 UTC) Moonrise 7:21AMMoonset 7:12PM Illumination 1% Phase: Waxing Crescent; Moon at 1 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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7 Day Forecast for Marine Location Near Cascade Locks, OR
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location: 45.68, -121.87     debug


Area Discussion for - Portland, OR
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Fxus66 kpqr 211629
afdpqr
area forecast discussion
national weather service portland or
928 am pdt Thu sep 21 2017

Synopsis Much more tranquil today, even though still have a few
showers around through this evening. High pressure builds in over the
weekend and continues into early next week for some great late
september weather in store for the region, with cool nights with
patchy fog and mild mostly sunny days.

Short term Today through Saturday... No changes. Previous
discussion follows... Upper trough now shifting into eastern oregon
and idaho.

This is allowing for northerly flow aloft over western oregon and
washington. Will maintain some threat of showers with the flow, as
still some instability, thanks mostly in part to the proximity of the
trough axis. Best threat will remain over the mountains.

With the cool air mass, and light winds, do have good conditions for
fog. But, still fair amount of mid and high clouds over the region,
so fog will not be widespread. Will have pockets where visibility
will be under a mile, so motorists should be prepared to slow down,
especially along creeks and rivers.

High pressure will gradually build over the region tonight and fri.

This will bring an end to the showers along with clearing skies. But,
this will allow for more extensive fog and or low clouds to form
across the region later tonight, and persisting into Fri am. Cool
nights and areas of fog will give way to mild daytime temperatures,
with mostly 60s along the coast and upper 60s to lower 70s inland.

Not much change on Sat and sun, as will maintain light winds for the
most part as high pres remains over the region. Again, expect
continued cool nights and mild days. Average highs for the interior
lowlands are mostly in the lower to mid 70s and in the 60s on the
coast. So, highs this weekend will not be that far from normal for
mid to late september. rockey.

Long term Sunday night through Wednesday... No changes. Previous
discussion follows... High pressure will remain over the area, with
mild days continuing. Will see light offshore flow, which should keep
most of the coastal areas free of fog and clouds. Even inland, any
fog will likely be more patchy in nature, and relegated to the
cowlitz valley and in the willamette valley south of aurora. -bishop

Aviation Isolated showers across the area through this
evening. Isolated thunderstorms are possible offshore, but do not
expect any over land. Low stratus this morning is resulting in
areas of MVFR CIGS with localized ifr cigs. The flight conditions
should gradually improve this morning to mostlyVFR conditions
this afternoon. Expect low clouds with ifr vsbys for the coast
late tonight into early Saturday. With the lingering surface
moisture, light winds and clearing skies tonight expect areas of
radiation
fog with ifr conditions for some of the inland valleys as well.

Kpdx and approaches... Showers possible through this afternoon
with the chance for showers decreasing throughout the day. Flight
conditions should gradually improve today, but any nearby showers
will likely temporarily drop ceilings into MVFR category. Light
south winds today will become west this afternoon and evening
then be light and variable tonight into Saturday morning. Clearing
tonight will provide a decent chance for radiation fog and ifr
conditions early Saturday morning. ~tj

Marine A series of lows off of the b.C. Coast will maintain 8
to 9 ft NW seas for the washington and oregon waters through
tonight. The seas should subside to below 6 ft Saturday morning
with slight changes in the swell direction (northwest to west)
into next week.

The winds will be light and variable today as a weak low moves
north to south across the waters. Building high pressure will
return light (less than 15 kt) north-northwest winds tonight
through early next week. However, weak lows moving north of the
waters will result in light and variable winds at times, mainly
north of cascade head. The first period of these light winds will
be late Friday morning into early Friday afternoon, with another
one Friday night through Saturday. ~tj

Pqr watches warnings advisories
Or... None.

Wa... None.

Pz... Small craft advisory for rough columbia river bar from 5 pm
this afternoon to 9 pm pdt this evening.

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
LOPW1 - 9440422 - Longview, WA 65 mi43 min 65°F1014.1 hPa (+0.3)

Wind History for Longview, WA
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure

Wind History from CZK (wind in knots)
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Last 24hr24------------------------SW12
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SW6W6----SW65SW5
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1 day ago53------------------------322SW632SE2E21S2
2 days ago----------------------------1214334434

Tide / Current Tables for Ellsworth, Washington - IGNORE HEIGHTS
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Ellsworth
Click for MapNote: The Columbia River is subject to annual freshets. Short range predictions are available at local river forecast centers. The data for stations above Harrington Point apply only during low river stages. There is a tidal influence along most of the

Thu -- 04:44 AM PDT     0.10 feet Low Tide
Thu -- 06:56 AM PDT     Sunrise
Thu -- 08:23 AM PDT     Moonrise
Thu -- 08:50 AM PDT     8.18 feet High Tide
Thu -- 04:59 PM PDT     -0.07 feet Low Tide
Thu -- 07:09 PM PDT     Sunset
Thu -- 08:15 PM PDT     Moonset
Thu -- 09:13 PM PDT     8.43 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
5.33.72.31.10.30.21.94.87.48.27.76.75.33.82.41.10.3-0.11.13.96.88.48.27.4

Tide / Current Tables for Vancouver, Washington - IGNORE HEIGHTS
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Vancouver
Click for MapNote: The Columbia River is subject to annual freshets. Short range predictions are available at local river forecast centers. The data for stations above Harrington Point apply only during low river stages. There is a tidal influence along most of the

Thu -- 04:19 AM PDT     0.10 feet Low Tide
Thu -- 06:56 AM PDT     Sunrise
Thu -- 08:24 AM PDT     Moonrise
Thu -- 08:24 AM PDT     8.18 feet High Tide
Thu -- 04:34 PM PDT     -0.07 feet Low Tide
Thu -- 07:09 PM PDT     Sunset
Thu -- 08:15 PM PDT     Moonset
Thu -- 08:47 PM PDT     8.43 feet High Tide
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
4.63.11.70.70.10.73.16.188.17.46.24.73.21.80.700.12.25.27.78.47.96.9

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 Portland, OR (15,3,4,5)
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Ground Weather Radar Station Portland, 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.