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Area Forecast Discussion (AFD)

Issued by Pendleton, OR (PDT)

                            
000
FXUS66 KPDT 222030
AFDPDT

Area Forecast Discussion
National Weather Service Pendleton OR
130 PM PDT Fri Mar 22 2019

.SHORT TERM...Tonight through Sunday Night...Clouds will increase 
for the rest of this afternoon and evening as a Pacific cold front 
approaches the area. This may hinder any further rise in 
temperatures this afternoon, but the whether will be mild with 
temperatures still warmer than normal, in the mid 50s to mid 60s. 
There is not much moisture with the initial cold front and 
precipitation will fall mostly in the mountains tonight. The next 
system will quickly follow this one on Saturday into Saturday night. 
There is more of a southerly component to the wind field which will 
draw more moisture from the south into the region by Saturday 
afternoon. Snow levels will also lower from above 6000 feet to 
between 3000-4000 feet MSL which will cause snow in the higher 
mountains. At this time snow amounts look to be light and under 
advisory amounts. But it will still need to be monitored by the next 
few shifts in case a winter weather highlight needs to be issued. 
Sunday and Sunday night it will dry out gradually as a transitory 
upper ridge moves across the region for the next weather system. 
Winds will be mostly light through the period. 88.

.LONG TERM...Monday through Friday.  Active weather will be seen 
across the area through the week.  A low pressure will set up off 
the Oregon Coast and will send a series of shortwaves into the Pac 
NW bringing several rounds of showers and transition toward cooler, 
near normal temperatures.  There continues to be some timing 
differences but models are fairly consistent with precipitation 
spreading south to north Monday afternoon and night with a slight 
break Tuesday with next system Wednesday.  The upper low is expected 
to move into Oregon on Thursday with showers continuing, followed by 
drier northerly flow on Friday.  Snow levels will be 4000-5000 feet 
on Monday and then lower to 3500-4000 feet through the rest of the 
week.  93  

&&

.AVIATION...18Z TAFs...Increasing clouds from west to east this 
afternoon and tonight with some light rain and brief periods of MVFR 
at RDM/BDN mainly between 03-12z.  VFR conditions over rest of area. 
Winds will increase to 10-15 kts through the afternoon and evening, 
decreasing to under 10kt after midnight. 93

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  41  53  37  55 /  40  20  20  10 
ALW  43  55  40  56 /  40  20  20  20 
PSC  44  60  41  60 /  10  10  10  10 
YKM  38  57  35  57 /  10  10  10   0 
HRI  43  59  39  60 /  30  10  10  10 
ELN  34  53  31  53 /  20  10  10   0 
RDM  32  48  28  54 /  30  30  10   0 
LGD  37  48  33  50 /  60  50  30  20 
GCD  38  50  33  54 /  70  60  30  10 
DLS  39  55  36  58 /  30  10  10   0 

&&

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

&&

$$

88/93/93