Area Forecast Discussion
Issued by NWS Pendleton, OR

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FXUS66 KPDT 262014
AFDPDT

Area Forecast Discussion
National Weather Service Pendleton OR
115 PM PDT MON SEP 26 2016

.SHORT TERM...Tonight through Thursday Evening...Upper level ridging
will continue to exit to the east...with the next trough of low
pressure slowly approaching the area by Wednesday/Thursday. A weak
marine push will enter the region on Tuesday providing for
breezy/windy conditions for the Columbia Gorge and the Kittitas
Valley. Due to the limited strength of the marine push...only expect
a slight increase in winds for the Columbia Basin and Blue Mountain
Foothills. A gradual cooldown in temperatures can be expected as
ridging exits and troughing approaches...with highs about 3-4 cooler
each day through Thursday. The next chance of showers will occur
late Thursday/Thursday evening as an initial wave is progged to
rotate around the trough to the west. Given limited deep layer
moisture...will cap PoPs at slight chance for now. GFS does depict
some limited instability for Thursday aftn/evening...but think it
will not be sufficient enough for any thunderstorm development.

.LONG TERM...Thursday night through Monday. An upper level trough
will control the weather pattern across the Pacific Northwest for
the extended period. The trough will be located offshore Thu night
and Fri into Sat with a southwest flow aloft. Weak instability
across the region with a slight chance of showers and partly to
mostly cloudy skies. Temperatures will be cooling down closer to
seasonal levels. As the trough moves inland Sun into Mon there will
be increasing chances for rain. Temperatures will continue cooling
with highs in the upper 50s and 60s. Snow levels will be about 6-7k
feet. 94

&&

.AVIATION...00z Tafs. Mainly clear skies this evening and tonight.
Mid level clouds sct100-150 Tue as a weak frontal boundary moves
through the area. Winds 5-10kt through tonight and 5-15kt Tue. 94

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  54  84  48  80 /   0   0   0   0
ALW  55  84  53  80 /   0   0   0   0
PSC  55  86  51  82 /   0   0   0   0
YKM  50  84  47  81 /   0   0   0   0
HRI  49  85  49  81 /   0   0   0   0
ELN  48  79  45  78 /   0   0   0   0
RDM  42  84  40  81 /   0   0   0   0
LGD  43  83  45  82 /   0   0   0   0
GCD  49  85  46  85 /   0   0   0   0
DLS  55  83  51  81 /   0   0   0   0

&&

.PDT Watches/Warnings/Advisories...
OR...None.
WA...None.
&&

$$

80/94/94



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