Saturday, August19, 2017 L-36.com


Marine Weather and Tides
Klickitat, 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 6:05AMSunset 8:05PM Saturday August 19, 2017 11:31 AM PDT (18:31 UTC) Moonrise 2:40AMMoonset 5:51PM Illumination 7% Phase: Waning Crescent; Moon at 27 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 191715 aaa
afdpdt
area forecast discussion
national weather service pendleton or
1016 am pdt Sat aug 19 2017

Short term Today and tonight... A flat zonal flow will continue
with some minor disturbances passing to the north. This will leave
skies mostly clear and near normal temperatures. Will see some
locally breezy winds in the afternoon and evening along the east
slopes of the cascades otherwise pretty normal wind pattern. No
major changes made in the morning update.

Aviation 18z tafs...VFR conditions are forecast to continue
through the next 24 hours at all terminals. Upper level cloudiness
will increase across the area this afternoon evening as moisture
riding over the ridge offshore moves into the area. North-
northwesterly transport winds will keep the smoke plume from the
milli fire northwest of bend west of the bdn rdm terminals with only
limited impacts to visibility expected from any lingering smoke in
the area. Winds will be generally light and diurnal, except at dls
where they will gust into the mid-upper 20s this afternoon and
evening. 74

Prev discussion issued 358 am pdt Sat aug 19 2017
short term... Today through Monday night... A broad upper trough will
keep a general westerly flow over the forecast area today. This
flow will continue to push cooler marine air into eastern oregon and
washington through the cascade gaps and the columbia river gorge.

Temperatures today, as a result, will be cooler than Friday with
lower elevation readings in the lower to mid 80s... And mostly 70s in
the mountains. Winds will be lighter and humidities will be a bit
higher and therefore fire weather conditions are not expected to
become critical. The flow aloft will gradually become northwest as
the broad upper trough moves to the east and an upper ridge builds
off the coast. This will keep dry and stable conditions over the cwa
through Monday night. Skies will be mostly clear through the period
with perhaps just some high thin cirrus at times. This should be
good viewing weather for the total eclipse on Monday. Winds will be
light through the period... Except perhaps a little breezy through
the cascade gaps at times during the afternoons and early evening. 88
long term... Tuesday through Saturday... The extended period starts
off with dry weather and mostly clear skies on Tuesday. Temperatures
remain above average, with afternoon highs reaching 92-98 in the
valleys basins and mid-80s to lower 90s mountains. By Tuesday night
moisture and elevated instability begin to increase as the flow
turns more southwesterly. This will bring a slight chance for a
shower or t'storm from about bend to john day and points south. A
large, highly amplified trough begins to approach the area from the
northeast pacific through the day on Wednesday. Latest model
guidance is in very good agreement in the details timing of
this system. Both the 00z GFS and ECMWF indicate a closed low at
500mb (~551dm) just off the north-central bc coast by 5pm Wednesday
will slide southeast over southern bc by 5pm Thursday. As this
system approaches, increasing moisture and instability will provide
a chance of showers and t'storms over the eastern half of the cwa
from Wednesday afternoon into the overnight hours. These t'storms
could certainly pose a fire weather threat, as fuels remain
extremely dry. Temperature remain quite warm out ahead of the front
on Wednesday, again reaching the 90s in the lower elevations, with
80s mountains. Then, on Thursday, as the surface cold front moves
across the area... Expect still a slight chance of t'storms lingering
over eastern grant, union and wallowa counties. There will be a
slight chance of rain showers along the immediate cascade crest in
washington as well. Otherwise, temperatures will be much cooler (10-
15 degrees) for all locations on Thursday. All signs are now
pointing to breezy or even windy conditions developing Thursday
afternoon behind the previously mentioned cold front. There will be
strong cold air advection, tightening pressure gradients, fairly
strong winds aloft and a punch of mid-level dry air. All of these
factors will allow gusty winds to effectively mix down to the
surface. At this time, westerly winds of 15-25 mph with higher gusts
are looking likely. Decided to add in a mention of blowing dust
Thursday afternoon in the lower columbia basin foothills, as the
current guidance would indicate a good setup for this potential.

Afternoon rh values will remain fairly low (18-28 percent)on
Thursday, which will not only aid in the blowing dust potential, but
also bring about fire weather concerns(for strong winds low rh). As
this system swings by our area should be under a more zonal, drying
flow for Friday. As winds decrease and skies clear expect a chilly
start Friday and Saturday morning... With lows dropping into the
40s low 50s... Except 30s in the mountains and high valleys. High
temperatures Friday will be about 5 degrees below average... 80-85 in
the lower elevations with 70s in the mountains. By next Saturday,
heights begin to rise as an upper level ridge builds over the
forecast area. This should mean dry weather, mostly clear skies and
warming temperatures. 77

Preliminary point temps pops
Pdt 83 58 82 54 0 0 0 0
alw 84 61 84 57 0 0 0 0
psc 87 56 86 57 0 0 0 0
ykm 86 58 86 56 0 0 0 0
hri 86 59 85 56 0 0 0 0
eln 82 59 82 54 0 0 0 0
rdm 83 46 83 46 0 0 0 0
lgd 81 51 80 48 0 0 0 0
gcd 83 52 83 48 0 0 0 0
dls 84 63 83 62 0 0 0 0

Pdt watches warnings advisories
Or... None.

Wa... None.

91 74


Weather Reporting Stations
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Airport Reports
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AirportDistAgeWind ktVisibilitySky/WeatherTempDewPtHumidityPressure
The Dalles Municipal Airport, WA33 mi38 minNNW 1610.00 miFair75°F53°F46%1019 hPa

Wind History from DLS (wind in knots)
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Last 24hrNW19
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2 days agoNW16
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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

Sat -- 01:20 AM PDT     2.23 feet Low Tide
Sat -- 03:48 AM PDT     Moonrise
Sat -- 05:29 AM PDT     8.65 feet High Tide
Sat -- 06:15 AM PDT     Sunrise
Sat -- 02:31 PM PDT     -1.11 feet Low Tide
Sat -- 06:56 PM PDT     Moonset
Sat -- 06:58 PM PDT     7.13 feet High Tide
Sat -- 08:10 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.62.32.64.56.88.48.67.96.85.33.72.10.7-0.4-1-0.90.93.66.17.16.86.15.24.1

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

Sat -- 12:55 AM PDT     2.23 feet Low Tide
Sat -- 03:48 AM PDT     Moonrise
Sat -- 05:03 AM PDT     8.65 feet High Tide
Sat -- 06:16 AM PDT     Sunrise
Sat -- 02:06 PM PDT     -1.11 feet Low Tide
Sat -- 06:32 PM PDT     7.13 feet High Tide
Sat -- 06:56 PM PDT     Moonset
Sat -- 08:11 PM PDT     Sunset
Tide / Current data from XTide NOT FOR NAVIGATION
Sorry tide depth graphs only, please select another station.
12am1am2am3am4am5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm10pm11pm
2.42.23.35.57.68.68.47.56.24.631.50.2-0.7-1.1-0.324.86.87.16.65.74.73.7

Weather Map and Satellite Images
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Weather Map
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IR Satellite Image from GEOS
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GOES Local Image of PacificNorthwest    EDIT
Geos

Wind Forecast for Pendleton, OR (14,3,4,5)
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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.