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Area Forecast Discussion (AFD)

Issued by Pendleton, OR (PDT)

                            
000
FXUS66 KPDT 210928
AFDPDT

Area Forecast Discussion
National Weather Service Pendleton OR
228 AM PDT Wed Aug 21 2019

.SHORT TERM...Today through Thursday night...Upper level trough will 
move across the area today and tonight exiting the region by 
Thursday morning. This will drive a rather strong cold front across 
the region this afternoon and evening. The main effects from the 
front will be a period of gusty winds along the front and for 2-3 
hour afterwords. Winds could reach 20-30 mph with some gusts to 35 
to 40 mph. The short duration of the wind threat precludes issuing a 
wind advisory at this time. The winds will certainly push around any 
existing fires but as the winds pick up the humidities will increase 
rapidly behind the front. So for now will not be issuing any fire 
weather highlights. There is a slim chance of thunderstorms in the 
far east mainly between 00Z-03Z with best potential albeit limited 
in Wallowa County. Otherwise a few showers can be expected areawide 
beginning in the west this afternoon and spreading eastward this 
evening. QPF amounts will be .10-.25 inches near the Cascades and 
.01-.10 inches elsewhere. From Thursday through Friday night the 
weather will become quiet again with just a few clouds from time to 
time. It will be cool Thursday with slightly below normal 
temperatures...but rebounding to near normal by Friday afternoon. It 
will be chilly Friday morning with lows 48-55 in the lower 
elevations and 38-45 in the mountains and high plateaus. 78 

.LONG TERM...Saturday through Tuesday. The region will remain in a 
dry weather pattern this weekend and next week as a ridge of high 
pressure builds into the pacnw. Pressure gradients may become tight 
and breezy west winds are possible this weekend especially in the 
gorge. The models may be under doing the warm temperatures that 
could climb into the 90s. 

&&

.AVIATION...12Z TAFS...Despite a weather system that is forecast to 
move through the region today that could produce a shower...mainly 
vfr conditions can be expected. However brief wind gusts between 25 
kts to 30 kts are possible from 20z to 02z.

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  84  55  79  50 /   0  40   0   0 
ALW  89  60  81  57 /   0  40   0   0 
PSC  90  59  84  54 /  10  50   0   0 
YKM  82  52  81  53 /  50  30   0   0 
HRI  84  57  83  51 /  10  50   0   0 
ELN  79  54  78  52 /  50  30   0   0 
RDM  81  45  80  42 /  40  50   0   0 
LGD  90  55  77  46 /   0  40   0   0 
GCD  89  52  78  48 /   0  40   0   0 
DLS  74  57  78  55 /  60  40   0   0 

&&

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

$$

78/97/97