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FXUS66 KPDT 152133
AFDPDT

Area Forecast Discussion
National Weather Service Pendleton OR
233 PM PDT Sat Jun 15 2019

.SHORT TERM...Tonight through Tuesday. Upper level ridge will be
over the region into early next week. Low level airmass will
remain dry. Expecting clear to partly cloudy skies through the
period with some cirrus moving through at times. Mos guidance and
850mb temperatures indicate highs in the 80s to lower 90s. Strong
surface high pressure centered offshore will generate westerly
winds each day. Mostly in the 10-20 mph range though 15-30 mph for
the Kittitas valley and Columbia gorge. 94

.LONG TERM...Tuesday Night through Saturday...Tuesday night through
Wednesday night a flat ridge offshore will keep a dry west to
northwest flow over our area and no precipitation is expected.
Models do show tight pressure gradients along the Cascades and
Tuesday evening and especially Wednesday afternoon and evening look
windy. 15 to 25 mph winds and low humidity in afternoon will raise
some fire weather concerns in the Columbia Basin and adjacent
valleys and will have to be watched over the next few days.
Wednesday night and Thursday models show a trough developing along
the Canadian border though the details are differing from model to
model. Most of the energy will stay to our north so have kept the
forecast dry aside from a few showers over the Washington Cascades
and in northeast Oregon Thursday afternoon. Thursday afternoon and
evening will be breezy as well, but not as strong as on Wednesday.
Models continue to show a trough over the Pacific Northwest Friday
through Saturday with continuing significant differences. Showers
and thunderstorms may be possible with this pattern but models
aren't showing much precipitation so have kept a dry forecast for
now. Wednesday will see temperatures cool to the upper 70s to mid
80s with mid 60s to mid 70s in the mountains. Thursday will be about
5 degrees cooler. Temperatures Friday and Saturday will warm a
couple of degrees each day, ending up with temperatures Saturday
similar to the Wednesday temperatures. Perry

&&

.AVIATION...Previous discussion...18Z TAFs...VFR conditions are
expected through the next 24 hours. Skies will be generally clear
with occasional FEW clouds above 10K feet AGL. Winds will be mainly
below 10 kts though KDLS KDLS will continue at 10-20 kts with gusts
to 25 kts through 04Z before dropping below 12 kts overnight. KRDM
and KBDN may have some gusts to 15 kts this afternoon as well. Perry

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT 52 87 55 88 / 0 0 0 0
ALW 55 90 60 90 / 0 0 0 0
PSC 57 93 60 94 / 0 0 0 0
YKM 52 91 57 91 / 0 0 0 0
HRI 54 92 59 93 / 0 0 0 0
ELN 54 85 56 85 / 0 0 0 0
RDM 45 84 47 84 / 0 0 0 0
LGD 49 83 52 83 / 0 0 0 0
GCD 46 84 50 84 / 0 0 0 0
DLS 56 87 57 87 / 0 0 0 0

&&

.PDT WATCHES/WARNINGS/ADVISORIES...
OR...None.
WA...None.
&&

$$

94/83/83
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