Tuesday, September26, 2017 L-36.com


Marine Weather and Tides
Cathlamet, WA

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 7:04AMSunset 7:01PM Tuesday September 26, 2017 1:09 PM PDT (20:09 UTC) Moonrise 12:31PMMoonset 10:02PM Illumination 36% Phase: Waxing Crescent; Moon at 6 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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PZZ210 Columbia River Bar- 831 Am Pdt Tue Sep 26 2017
In the main channel..Combined seas 2 to 4 ft today and tonight. However, seas will temporarily build to 5 to 6 ft during the ebbs around 930 am Tuesday morning and 945 pm Tuesday evening.
PZZ200 831 Am Pdt Tue Sep 26 2017
Synopsis for southern washington and northern oregon coast.. High pressure will build across the waters for most of the week. Thermal low pressure along the southern oregon coast Tuesday evening through Wednesday will bring a short round of gusty north winds.

7 Day Forecast for Marine Location Near Cathlamet, WA
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location: 46.2, -123.38     debug


Area Discussion for - Portland, OR
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Fxus66 kpqr 261938 cca
afdpqr
area forecast discussion... Correction
national weather service portland or
955 am pdt Tue sep 26 2017

Synopsis High pressure will build into eastern washington and
oregon resulting in offshore flow and warmer temps through Thursday.

The next chance for rain comes around Friday, as a weakening cold
front moves into the pac nw. Showers and cooler weather will continue
into the weekend.

Short term Today through Thursday..Patchy fog around in the
southern valley this morning, but that will give way to sunshine by
afternoon as high pressure builds inland and a thermal trough
develops along the coast today and tonight. Pressure gradients are
showing a good offshore trend this morning as offshore flow develops.

This will result in warmer conditions today and Wednesday. Wednesday
should be the warmest day along the coast but models are in good
agreement that a flow reversal will occur along the southern oregon
coast beginning Wednesday night so temperatures will be cooler along
the coast on Thursday with low stratus and fog returning. Some marine
air may get into the southern willamette valley Thursday morning but
not enough to prevent another warm day inland. In response to an
approaching upper trough the thermal trough will move inland Thursday
night and the marine layer should deepen bringing some clouds inland
through Friday morning. Thus, the warm weather will end for at least
the foreseeable. Schneider

Long term No changes. Previous discussion follows... Thursday night
through Monday... Southwesterly flow across the region Thursday night
and Friday as an upper trough advances through the forecast area.

Forecast models in general agreement with a weakening front pushing
across the area. Boosted pops even further as 00z models are in
better agreement for late in the week and weekend with a cool trough
transiting the region sat. After the weekend however, models then
diverge a bit for the first half of next week, so have maintained
some low end pop chances for the start of next week in a nod to the
ecmwf solution which provides for a deeper upper trough with more
moisture (compared to the direr GFS solution). Expect that
temperatures will trend back to slightly below seasonal normals for
the weekend through early next week. Mh cullen

Aviation There are some pockets of fog and low stratus
producing ifr conditions this morning along some of the coastal
river valleys as well as west of eugene. The stratus and fog will
lift and dissipate by late morning. Otherwise, most of the area
isVFR with abundant sunshine. ExpectVFR conditions everywhere
this afternoon and tonight.

Kpdx and approaches...VFR conditions expected today and tonight.

Marine Thermal low pressure over southwest oregon will push
northward along the coast today and bring some gusty north winds
this evening and tonight over the outer waters and inland waters
south of cascade head. Wind gusts will be in the 20-25 kt range
in these areas. The thermal low pressure pushes inland Wednesday
for decreasing winds. Winds will remain light Wednesday into the
weekend. Towards the end of weekend and the beginning of next
week there is still considerable model uncertainty with the ecmwf
indicating gusty southerlies ahead of the next system to move
through the area while the GFS continues the northerlies.

Seas will remain 4 to 5 through the week until later in the
weekend when a system moving in will bring increasing seas
across our waters. Tw

Pqr watches warnings advisories
Or... None.

Wa... None.

Pz... Small craft advisory for winds from 8 pm this evening to 2 am
pdt Wednesday for waters from CAPE shoalwater wa to
cascade head or from 10 to 60 nm.

Small craft advisory for winds from 5 pm this afternoon to 8 am
pdt Wednesday for waters from cascade head to florence or
from 10 to 60 nm.

Small craft advisory for winds from 5 pm this afternoon to 11
pm pdt this evening for coastal waters from cascade head
to florence or out 10 nm.

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Weather Reporting Stations
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Stations Dist Age Wind Air TempWater Temp WavesPressureDewPt
ASTO3 - 9439040 - Astoria, OR 21 mi52 min N 5.1 G 6 64°F 65°F1020.5 hPa
LOPW1 - 9440422 - Longview, WA 23 mi52 min 66°F1020.8 hPa
46096 40 mi100 min NNW 7.8 G 7.8 54°F 58°F1021.6 hPa
46243 - Clatsop Spit, OR - 162 40 mi40 min 57°F5 ft
TOKW1 - 9440910 - Toke Point, WA 47 mi52 min ENE 5.1 G 8 66°F 61°F1021.1 hPa

Wind History for Astoria, OR
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
Southwest Washington Regional Airport, WA26 mi14 minNNW 510.00 miFair72°F55°F55%1020.7 hPa

Wind History from KLS (wind in knots)
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Last 24hrS5CalmS3SE3CalmE3E4CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmN3N7N55N5
1 day agoCalmW53NW5W6NW5NW3N3CalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmCalmS3S4S4S4
2 days ago44W6NW5W8W6W3CalmCalmCalmCalmNW3CalmNW3CalmCalmN4NW4CalmCalmCalmCalmN34

Tide / Current Tables for Cathlamet, Washington - IGNORE HEIGHTS
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Cathlamet
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

Tue -- 02:23 AM PDT     0.55 feet Low Tide
Tue -- 07:06 AM PDT     Sunrise
Tue -- 07:48 AM PDT     6.23 feet High Tide
Tue -- 01:30 PM PDT     Moonrise
Tue -- 02:14 PM PDT     2.58 feet Low Tide
Tue -- 07:02 PM PDT     7.33 feet High Tide
Tue -- 07:02 PM PDT     Sunset
Tue -- 11:02 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.810.60.71.83.44.95.96.25.95.24.33.52.92.62.845.66.97.37.16.45.34

Tide / Current Tables for Skamokawa, Steamboat Slough, Columbia River, Washington
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Skamokawa
Click for Map
Tue -- 01:28 AM PDT     0.65 feet Low Tide
Tue -- 07:06 AM PDT     Sunrise
Tue -- 07:29 AM PDT     5.47 feet High Tide
Tue -- 12:50 PM PDT     1.80 feet Low Tide
Tue -- 01:31 PM PDT     Moonrise
Tue -- 06:16 PM PDT     6.54 feet High Tide
Tue -- 07:02 PM PDT     Sunset
Tue -- 11:02 PM PDT     Moonset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
1.10.70.71.42.63.84.85.45.44.83.82.821.82.23.34.766.56.45.74.63.42.4

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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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.