Wednesday, April25, 2018 L-36.com


Marine Weather and Tides
Klickitat, WA

Version 3.4
What's New / NOTES
3/3/2018 - There is a new GOES Satellite for the east coast that required rewriting that part of the code. Please report any issues.
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.

Sunrise 5:55AMSunset 8:04PM Tuesday April 24, 2018 11:40 PM PDT (06:40 UTC) Moonrise 1:10PMMoonset 2:44AM Illumination 75% Phase: Waxing Gibbous; Moon at 10 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 Klickitat, WA
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location: 46.09, -121.02     debug


Area Discussion for - Pendleton, OR
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Fxus66 kpdt 250510
afdpdt
area forecast discussion
national weather service pendleton or
1010 pm pdt Tue apr 24 2018
updated aviation discussion

Short term The upper level ridge of high pressure will continue
over the region but will flatten a little overnight as a weather
system passes by to the north. This will allow some high clouds to
pass over the region. Winds will be light and temperatures remain
warmer than normal. Minor changes made to sky, temperatures and
winds for overnight and Wednesday in the evening forecast update.

Aviation 06z tafs...VFR conditions will continue with high level
cirrus. Winds will generally be less than 10kts through Wednesday.

Prev discussion issued 231 pm pdt Tue apr 24 2018
short term... Tonight through Friday... The upper level ridge over
the pacific northwest will flatten overnight due to a disturbance
moving through western canada. This disturbance will bring an
increase in high level cloudiness to the region, but overall
conditions will remain dry. Overnight low temps will be near to
slightly above seasonal as a result. The upper ridge will then
strengthen Wednesday afternoon and Wednesday night as an upper low
over the eastern pacific deepens. Thus will see continued dry
conditions with warm temps Wednesday through Thursday. Moisture
wrapping around the upper low offshore will gradually cause an
increase in cloudiness late Wednesday night through Thursday night.

A few showers and or stray thunderstorms still look to develop over
central and north-central oregon late Thursday afternoon and evening
due to the increased moisture. Did push the start of these showers
storms back to around 5 pm Thursday afternoon though. A few showers
should linger during the overnight hours of early Friday morning.

The upper low looks to work into northwest california and southwest
oregon Friday. Thus should see a further increase in moisture and
shower chances over central oregon, with the shower threat shifting
gradually north and east. A cold front is expected to move across
the area as well causing winds to increase Friday afternoon,
especially over the columbia basin and in the columbia gorge.

Thunderstorms are also expected to develop ahead of the front over
portions of central and east-central oregon. Shear may become strong
enough to cause scattered coverage over grant and southern umatilla
counties Friday afternoon. Temps should be cooler over central and
north-central oregon Friday afternoon. 90
long term... Friday night through Tuesday... Models are still in some
disagreement on upper low pressure system to move onshore southwest
oregon northern california Friday Friday night. The ECMWF continues
to be slightly slow and further south than the GFS but over all
similar with moving the low into oregon NRN california Saturday
night. The will bring a chance of showers to the area through the
weekend with some high elevation snow showers. There is a chance of
thunderstorms over the blue mountains yet Friday evening. The low
lingers over the area through Sunday with the ECMWF holding on to
some showers through Monday and then cooler northerly flow on
Tuesday. Temperatures will be near to slightly below normal through
the weekend and warm up a little for Tuesday. 93

Preliminary point temps pops
Pdt 43 79 45 81 0 0 0 0
alw 41 81 47 83 0 0 0 0
psc 43 81 43 84 0 0 0 0
ykm 42 81 46 85 0 0 0 0
hri 41 81 42 84 0 0 0 0
eln 40 78 42 83 0 0 0 0
rdm 35 81 40 82 0 0 0 0
lgd 41 75 38 79 0 0 0 0
gcd 40 77 43 81 0 0 0 0
dls 43 83 47 86 0 0 0 0

Pdt watches warnings advisories
Or... None.

Wa... None.

91 91 91


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
The Dalles Municipal Airport, WA33 mi47 minN 010.00 miFair57°F39°F53%1018.1 hPa

Wind History from DLS (wind in knots)
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Last 24hrE6E6SE6SE3SE4CalmCalmCalmCalmCalmCalmCalmS4E6E14E10E11E12E8E5E3E5CalmCalm
1 day agoE6SE4SE5E5SE4SE4CalmCalmE3CalmCalmCalm5E9E11E9SE10
G19
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2 days agoNW5N4SW4E6NW84CalmW4S3N9NW63CalmCalm--3NE4E44E4NE6CalmCalmSE3

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

Wed -- 12:13 AM PDT     0.36 feet Low Tide
Wed -- 04:23 AM PDT     Moonset
Wed -- 04:53 AM PDT     7.71 feet High Tide
Wed -- 06:07 AM PDT     Sunrise
Wed -- 12:40 PM PDT     2.25 feet Low Tide
Wed -- 03:28 PM PDT     Moonrise
Wed -- 04:40 PM PDT     7.58 feet High Tide
Wed -- 08:09 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.40.82.6577.77.46.75.84.73.72.92.42.33.65.67.27.67.16.35.13.92.71.6

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

Wed -- 04:23 AM PDT     Moonset
Wed -- 04:27 AM PDT     7.71 feet High Tide
Wed -- 06:07 AM PDT     Sunrise
Wed -- 12:15 PM PDT     2.25 feet Low Tide
Wed -- 03:28 PM PDT     Moonrise
Wed -- 04:14 PM PDT     7.58 feet High Tide
Wed -- 08:10 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
0.41.53.65.97.57.67.16.35.34.33.32.62.32.74.46.47.57.46.85.84.63.42.21.2

Weather Map and Satellite Images
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wmap_P
GOES Local Image of PacificNorthwest    EDIT
NOTE: East coast views moved to GEOS-16. They are experimental and not well supported by NOAA so they may not be correct so be warned. This change required redoing a large amount of the GOES code. If the image you are expecting is not showing, please let me know. You may need to use the EDIT function to update your location.
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Wind Forecast for Pendleton, OR (2,6,7,8)
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Ground Weather Radar Station Pendleton, 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.