Area forecast discussion...updated 
National Weather Service Pendleton or 
927 am PST Thursday Mar 5 2015 


Updated aviation discussion 


Short term...satellite showing plenty of thin cirrus over the 
region. This will continue through Friday based on position of upper 
ridge. Expect clouds will have a small impact on temperatures though. 
Airmass remains dry with low surface dew points so large diurnal 
temperature spreads likely. 94 


&& 


Aviation...18z tafs...VFR conditions over the next 24 hours. Thin 
cirrus clouds will continue over the area resulting in scattered to broken 
ceilings at 200-250. Winds will remain less than 10 kts. Perry 


&& 


Previous disc... /issued 300 am PST Thursday Mar 5 2015/ 


Short term...today through Saturday night...a ridge of high 
pressure will be over the region through Saturday night. This will 
keep fair weather over the area with moderating temperatures. It 
will remain cold at night with 20s and lower 30s for lows but 
afternoon highs will be warm with lower elevation 50s today and 60s 
Friday and Saturday. High temperatures in the mountains will be in 
the 40s today and 50s Friday and Saturday. There will be some high 
cloudiness through the period especially central and north. Winds 
will be light and mainly terrain driven. 78 


Long term...Sunday through Wednesday...a middle/upper level ridge of 
high pressure with the ridge along the coast on Sunday moves slowly 
eastward over the next several days thus allowing a large middle/upper 
trough to move into the NE Pacific by Wednesday thus introducing 
moisture and a chance of rain along the east slopes of the Cascades 
beginning Tuesday night with snow level 5500-6000 feet in the 
Washington Cascades and the snow level rising to 6000-7000 feet in 
the Oregon Cascades Tuesday night. On Wednesday the trough swings a 
warm front into the forecast area for increasing probability of precipitation answer snow level 
5500-6500 feet. Polan 


&& 


Preliminary point temps/pops... 
PDT 58 31 61 34 / 0 0 0 0 
alw 58 37 61 37 / 0 0 0 0 
psc 59 29 63 31 / 0 0 0 0 
ykm 57 30 60 32 / 0 0 0 0 
hri 60 30 63 30 / 0 0 0 0 
eln 56 31 58 30 / 0 0 0 0 
rdm 61 23 62 24 / 0 0 0 0 
lgd 53 27 57 29 / 0 0 0 0 
gcd 55 29 57 25 / 0 0 0 0 
dls 59 33 65 35 / 0 0 0 0 


&& 


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


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


$$ 


94/83 



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