Area Forecast Discussion
Issued by NWS Pendleton, OR

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FXUS66 KPDT 261737 AAA
AFDPDT

Area Forecast Discussion
National Weather Service Pendleton OR
1038 AM PDT THU MAY 26 2016

UPDATED AVIATION

.SHORT TERM...Morning Update...An upper level low will persist over
British Columbia through at least tonight. This system will cause
the current onshore surface flow to continue through tonight as
well. Thus breezy to locally very windy conditions are still
expected in the Gorge and across the Columbia Basin and it`s
adjacent valleys. Will keep the current wind advisory in effect for
the Gorge. Will also monitor the winds in the Kittitas Valley and
the Oregon portion of the basin for potential advisories. Winds
could cause localized patches of blowing dust in the Oregon portion
of the basin, and have added a mention in this area. Weak convection
may lead to a few showers over portions of Wallowa county this
afternoon and evening. At this time the instability does not look
strong enough to result in lightning production and have removed
mention of thunder. Also, may see a few slop over showers over
portions of the Cascade east slopes. Other updates included
adjusting sky cover, high temp and wind forecasts. 90

.LONG TERM...Previous Discussion...Upper level trough moving across
the Pacific Northwest Sunday into Monday. This will result in partly
to mostly cloudy skies with scattered showers. Some instability Sun
afternoon could bring a few thunderstorms over central and northeast
Oregon. This system will keep temperatures near normal levels with
highs in the 60s and 70s. A ridge will then build across the area
Tuesday into early Wednesday with clear to partly cloudy skies and
warmer temperatures. Highs will be in the 70s to lower 80s. An
approaching trough may bring some showers and thunderstorms Wed
night into Thursday.

&&

.AVIATION...18z tafs...Westerly winds increasing becoming 15-
30kt. Strongest winds likely at KDLS and KPDT.  Weak instability
with cumulus developing at 040-070. Otherwise upper low moving into
the Pac NW with sct-bkn 200.

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  71  45  66  44 /   0  10  10  10
ALW  71  49  66  48 /   0  10  10  10
PSC  77  49  71  49 /   0  10  10   0
YKM  76  43  70  44 /   0  10  10  10
HRI  75  48  69  46 /   0  10  10  10
ELN  67  46  64  45 /   0  10  10  10
RDM  67  34  63  35 /   0  10  10  10
LGD  67  41  61  39 /   0  10  10  10
GCD  69  40  63  37 /   0  10  10  10
DLS  69  50  66  49 /   0  10  10  10

&&

.PDT Watches/Warnings/Advisories...
OR...Wind Advisory until 8 PM PDT this evening for ORZ041.

WA...Wind Advisory until 8 PM PDT this evening for WAZ024.

&&

$$

90/94/79



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