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Area forecast discussion 
National Weather Service Pendleton or
240 am PDT Wednesday Oct 22 2014

Short term...today through Friday...a large upper level low and
strong jet will impact the Pacific northwest for the next few days.
A cold front is moving onshore this morning. His front will be very
slow to move eastward but precipitation ahead of the front has
started east of the Cascades. The strong southwest flow combined
with deep moisture will bring heavy rain to the Cascades today.
Lighter rain is expected further east from the Cascades. The frontal
boundary and steady rain will move southeast across the forecast
area tonight. Rain shadowing will decrease the the precipitation
Thursday across the Columbia Basin while orographic effects will
keep precipitation likely near the Cascade crest and northeast
Oregon mountains. The frontal boundary will move northward Friday
over the County Warning Area as a warm front. This will bring another period of
widespread rain. High temperatures over the next several days will remain
in the 50s and 60s. With the active weather pattern winds will
become breezy at times Wednesday and Thursday. Coonfield

Long term...Friday night through Wednesday...except for the
Cascades...a brief break in the precipitation will occur Friday
night as the warm front moves north of the area. As the upper trough
and cold front move across the area late Saturday and
Sunday...surges of moisture will affect mainly the Cascades and Blue
Mountains. Snow level above 4500 in Washington and above 5000 in
Oregon so impacts will be minimal. Slightly drier conditions return
Monday...but another upper level trough to move across the area
Tuesday and Wednesday. It is possible this trough may contain some
left over moisture and energy from Pacific tropical system Ana as it
gets entrained into the westerly flow over this weekend.

&&

Aviation...previous discussion...06z tafs...VFR conditions should
prevail next 24 hours...but expect clouds to be lowering and rain
increasing which could result in some MVFR conditions at
krdm...kbdn...kdls and kykm by Wednesday afternoon. Rain may not
reach kpsc...kalw and kpdt until late Wednesday afternoon or
evening. Winds will generally remain below 15 kts...except they will
be occasionally gusty to 25-30 kts out of the south.

&&

Preliminary point temps/pops...
PDT 70 51 67 48 / 10 80 50 20
alw 68 52 67 51 / 10 80 50 20
psc 68 53 69 49 / 30 80 30 20
ykm 60 44 63 41 / 80 100 20 20
hri 68 47 68 46 / 20 80 30 20
eln 59 46 63 41 / 90 100 30 20
rdm 65 46 63 43 / 40 90 40 30
lgd 63 52 62 46 / 10 70 50 40
gcd 64 47 61 45 / 10 70 50 40
dls 62 50 64 47 / 70 100 40 30

&&

PDT watches/warnings/advisories...
or...none.
Washington...none.
&&

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

$$

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