947 
FXUS66 KPDT 141523
AFDPDT

Area Forecast Discussion
National Weather Service Pendleton OR
823 AM PDT Sun Jul 14 2019

.SHORT TERM...Today and tonight...An upper level trough has pushed 
onshore this morning. This trough has very limited moisture 
associated so main impact with be slightly cooler temperatures and 
some breezy afternoon and evening westerly winds along the east 
slopes of the Cascades which spill out into the Columbia Basin. A 
southwest flow continues over eastern Oregon where again some late 
day isolated thunderstorms will be possible mainly east of a line 
from John Day to Enterprise.


&&

.AVIATION...18Z TAFs...SCT-BKN mid/upper level cloudiness associated 
with a passing jet streak will continue to move through the region 
today/tonight becoming BKN-OVC by Monday morning. Additional FEW-SCT 
cumulus coverage is expected over the higher terrain this afternoon. 
All terminals remain comfortably VFR through the period with minimum 
cigs around 9000 ft agl. Winds will be a bit lighter than yesterday, 
5-15KTs with a slightly weaker response to cross-Cascade thermal 
gradients in the afternoon/evening. Isolated thunderstorms will be 
possible again this afternoon/evening across Crook/Grant/Wallowa 
County, but will stay well away from the terminals. Peck


&&

.PREV DISCUSSION... /issued 152 AM PDT Sun Jul 14 2019/ 

SHORT TERM...Today through Tuesday...An upper trough off the coast 
will keep a southwest flow over the region and forecast area today 
and Monday. There will be some moisture and just enough instability 
warrant a few showers and afternoon thunderstorms in the forecast 
for the central to northeast mountains. SPC has some of northeast 
Oregon in a Marginal risk of thunderstorms. However, severe 
thunderstorms are not expected, but one cannot be completely ruled 
out. Elsewhere in the forecast area it will remain dry. The upper 
trough axis will move across the forecast area on Tuesday. However, 
moisture will be very limited on Tuesday and therefore have mostly 
cloudy skies, but no rain or thunderstorms. It will be too stable on 
Tuesday due to a marine push. Temperatures will be near normal today 
and just a few degrees below normal on Monday and Tuesday. 88

LONG TERM...Tuesday night through Saturday.  West to southwest flow 
aloft can be expected through much of the period as a low pressure 
system remains over the northeast Pacific Ocean.  Several shortwaves 
will rotate through this pattern and will bring some breezy winds to 
the area for Wednesday, Thursday and Saturday.  They will also bring 
slight chances of showers along the Washington Cascades. 
Temperatures will trend slightly cooler through the week with this 
progressive pattern with highs about 3 to 5 degrees cooler than 
normal for this time of year. 

AVIATION...12Z Tafs.  Mainly VFR conditions the next 24 hours. 
Isolated thunderstorms will be possible over the Blue Mountains 
today, but shouldn't impact TAF sties. A weak trough will be moving 
into the area through the day and tighten the gradient, and bring 
increased winds to mainly Washington through the afternoon and 
evening.  93

&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  87  61  83  56 /   0   0   0   0 
ALW  88  64  86  61 /   0   0   0   0 
PSC  90  62  88  62 /   0   0   0   0 
YKM  88  57  85  57 /   0   0  10   0 
HRI  90  64  87  60 /   0   0   0   0 
ELN  80  59  80  57 /   0   0   0   0 
RDM  85  50  80  50 /   0   0   0  10 
LGD  84  57  79  55 /  10  10  10  10 
GCD  86  56  80  53 /  20  20  10  10 
DLS  85  65  83  62 /   0  10  10   0 

&&

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

$$

91/74/74