856 
FXUS66 KPDT 092034
AFDPDT

Area Forecast Discussion
National Weather Service Pendleton OR
134 PM PDT Tue Oct 9 2018

.SHORT TERM...Today through Thursday...An upper level low moved
from Moses Lake WA to southeast ID. Precipitation has tapered 
down to isolated to scattered showers, mainly in the mountains. 
Precipitation will continue to decrease through the evening as 
the low moves farther away. Snow levels will be near 5000 ft, so 
minor accumulations are possible. By midnight skies will begin to
clear as northerly low level flow develops. Patchy fog or 
freezing fog will develop late tonight due to radiational cooling 
and very moist ground. Wednesday night an upper level ridge will 
build over WA and then into OR. With a building ridge clear skies 
and light winds will strong radiational cooling will occur. 
Thursday morning low temperatures will be near freezing in the 
Columbia Basin and Blue Mountains Foothills so Freeze Warnings may
be necessary. Patchy fog or freezing fog will develop again early
Thursday morning as well. Coonfield 

.LONG TERM...Thursday night through Tuesday. Large upper level
ridge will control the weather pattern for the Pacific northwest
through the extended time period. The upper level flow will be
northerly with some occasional cirrus moving through. Otherwise
sunny days with highs in the 50s and 60s. Clear cool nights with
lows in the 20s and 30s. Surface winds will be mainly north to
northeast as the pattern favors offshore low level flow. 94

&&

.AVIATION...18z tafs. Rain will continue at PDT ALW through about 
20z with upslope flow into the Blues. Low ceilings and visibility 
into early afternoon with gradual improvement late afternoon. 
Remainder of the Taf sites sct-bkn 030-070 through early evening. 
Winds 5-15kt except stronger NW winds at RDM BDN through afternoon.
94

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  36  56  33  58 /  10  10   0   0 
ALW  39  58  37  60 /  10  10   0   0 
PSC  39  61  34  63 /  10   0   0   0 
YKM  38  61  32  64 /  10   0   0   0 
HRI  38  61  34  63 /  10  10   0   0 
ELN  37  60  33  63 /  10  10   0   0 
RDM  32  57  26  58 /  10  10   0   0 
LGD  36  54  31  57 /  20  10  10   0 
GCD  35  53  31  59 /  20  10  10   0 
DLS  44  64  39  67 /  10  10   0   0 

&&

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

$$

76/94/94