Area Forecast Discussion
Issued by NWS Pendleton, OR

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FXUS66 KPDT 272304
AFDPDT

Area Forecast Discussion
National Weather Service Pendleton OR
400 PM PDT WED JUL 27 2016

.SHORT TERM...Tonight through Saturday...General Overview...While
the short term is forecast to be completely dry, today along the
Elkhorns and Eagle Cap Mountains will be the only exception as we
have isolated thunderstorms in the forecast for these areas through
about 8 pm this evening. Temperature wise, very warm/hot and dry
conditions through Saturday.  Highs Thursday and Friday will be in
the upper 90s to lower 100s across the lower elevations, and in the
mid 80s to mid 90s mountains.  Lows each night should range in the
60s for the lower elevations, and in the 50s mountains.  By Saturday
west winds will increase 10 to 15 mph, and cooler air will start to
intrude, but highs will only be about 5 degrees cooler than Thursday
and Friday.

Technical Synopsis...High pressure will continue over the forecast
area for the next few days.  A weak disturbance is currently pushing
across the Lower Columbia Basin.  As this disturbance moves across
eastern Grant and Southern Wallowa County, there may be enough
moisture and instability for a isolated thunderstorm or two.  As
this system exits drier and warmer temperatures will follow.
Otherwise, no active weather expected until Saturday afternoon as a
trough of low pressure to the north will move inland.  Pressure
gradients will tighten in the afternoon and provide breezy
conditions.  Weber

.LONG TERM...Saturday night through Wednesday. Upper level trough
moving across the region Saturday night into Sunday. This will bring
cooler temperatures and breezy westerly winds. Highs will be down
about 10 degrees. This system will be dry with skies remaining clear
to partly cloudy. Westerly flow aloft will then continue through
early next week. Another upper level trough will be crossing the
Pacific northwest Monday into Tuesday. Skies will remain clear to
partly cloudy with temperatures close to seasonal average. Extended
models have different solutions with these systems as to location
and timing. Have taken a blend of the gfs euro canadian with
convection remaining north of the forecast area for now. 94

&&

.AVIATION...00Z TAFS. Mainly clear skies the next 24 hours over the
taf sites. Scattered cumulus currently over the mountains will
dissipate by 03z. Winds 5-15kt today and Thursday. Less than 10kt
tonight. 94

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  61  97  63  98 /   0   0   0   0
ALW  67  98  69 100 /   0   0   0   0
PSC  66 101  68 102 /   0   0   0   0
YKM  67 101  68 100 /   0   0   0   0
HRI  65 100  67 101 /   0   0   0   0
ELN  64  96  64  98 /   0   0   0   0
RDM  52  96  55  97 /   0   0   0   0
LGD  57  95  58  96 /   0   0   0   0
GCD  57  96  59  98 /  10   0   0   0
DLS  67 100  69  98 /   0   0   0   0

&&

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

$$

89/94/94



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