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Area forecast discussion...updated 
National Weather Service Pendleton or
359 am PST Thursday Jan 29 2015

Updated aviation discussion

Short term...today through Saturday. A weak upper trough will move
across the region today. Not expecting any precipitation with this
system. Just an increase in middle and high level clouds. Observations
indicate fairly extensive area of stratus continues over the
Columbia Basin and adjacent valleys...extending into central Oregon
to Redmond and Bend. Areas of fog and patchy drizzle continue as
well. As the trough moves east of the region tonight the upper
ridge builds back Friday into Saturday. Low level inversion remains
in place with stratus and fog continuing the next few days over the
Columbia Basin. High temperatures will be in the 40s. 94

Long term...Saturday night through Wednesday...upper level ridge of
high pressure Saturday night for dry conditions followed by a warm
front and associated precipitation during the day on Sunday with
snow levels 6000-6500 feet. Sunday night rain and snow likely with
snow level around 4000 feet. Monday/Monday night another warm front
brings rain and mountain snow with the snow level around 4500 feet.
Tuesday and Wednesday an upper level ridge builds back over region
for dry conditions. Polan

&&

Aviation...12z tafs...IFR or LIFR conditions are expected until 19z
today at kalw, kpdt, kykm, kdls due to fog and low clouds. Krdm and
kbdn will be vlifr until 18z today due to dense fog and ceilings near
100 feet above ground level. Kpsc will have MVFR for the next 24 hours due to ceilings
near 1500 feet above ground level. Otherwise, middle and high clouds will occur outside
of areas affected by the low stratus and associated fog. After 19z
conditions will improve temporarily and then will worsen again this
evening. Winds will remain light and variable at all taf sites for
the next 24 hours. Polan

&&

Preliminary point temps/pops...
PDT 41 32 40 30 / 10 10 0 0
alw 40 35 40 33 / 10 10 10 0
psc 42 33 41 31 / 10 0 10 0
ykm 38 31 41 29 / 10 0 0 0
hri 40 33 41 31 / 10 0 0 0
eln 44 30 40 29 / 10 0 0 0
rdm 48 29 48 27 / 10 0 0 0
lgd 48 29 46 28 / 10 10 0 0
gcd 51 29 49 27 / 10 10 0 0
dls 46 36 44 34 / 10 10 0 0

&&

PDT watches/warnings/advisories...
or...dense fog advisory until 10 am PST this morning orz511.

Washington...none.
&&

For additional weather information, check our web site at...
www.Weather.Gov/Pendleton

$$

94/99/99

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