997 
FXUS66 KPDT 072112
AFDPDT

Area Forecast Discussion
National Weather Service Pendleton OR
212 PM PDT Tue Jul 7 2020

.SHORT TERM...This afternoon through Thursday night...Front has
cleared the region. In its wake, dry conditions, outside of 
showers along Cascade crest, expected as the flow becomes 
westerly. Breezy to windy conditions and cooler temps expected 
behind the front with highs upper 60s to low 80s. Winds will 
likely reach advisory criteria in the Kittitas Valley and the 
Gorge east of The Dalles. Weak transient ridge pushes across the 
region tonight into Wednesday. This will bring an end to Cascade 
showers and also bring slightly warmer temps, lighter winds and 
mostly sunny skies for Wednesday. The dry and calm conditions 
continue Wednesday night into most of Thursday. Warmer temps 
expected Thursday (upper 70s to upper 80s) as the flow turns 
southwest as another shortwave trough/front approaches the region.
Models in better agreement on timing and have it pushing across 
Thursday night. Not a lot of moisture with this system as the flow
remains west to southwest, but may be enough moisture and 
instability for be a chance or showers/storms over the eastern 
mountains with showers along the Cascade crest. Many areas of the 
Lower Columbia Basin and surrounding valleys will experience 
breezy to windy conditions once again with gusts mainly around 
25-35 mph...locally higher.

.LONG TERM...Friday through Tuesday...Models are in reasonable 
agreement for the period. Could be lingering Cascade crest showers 
and eastern mountain showers/storms Friday morning as the 
trough/front kick east of the region. Some locally breezy winds 
possible Friday behind the system, mainly through the Cascade gaps. 
Highs will be near 80 to near 90. As we head towards the weekend, 
ridge strengthens over the four corners region with axis extending 
up through northern Rockies. This will bring warm and dry southwest 
flow over the PacNW through Saturday. Saturday night into Sunday, a 
another trough/front will swing through the region as an upper low 
pushes across southern Canada. It appears that large scale forcing 
for upward vertical motion will be confined mostly to the 
U.S./Canadian border the threat of showers/storms looks low, with 
best chance again across the eastern mountains. Breezy to windy 
conditions possible Sat/Sun with the front passage, mainly through 
the Cascade gaps. Early next week looks to be dry and possibly 
breezy again with westerly flow aloft. Warmest day will be Saturday 
with highs in the mid 80s to mid 90s, cooler Sunday through Tuesday 
with highs in the mid 70s to upper 80s.

&&

.AVIATION...previous discussion...18Z TAFs...VFR conditions will 
prevail through the period. Outside of some thin cirrus and 
perhaps a few afternoon cumulus clouds skies will be clear. Winds 
increase to 14-22g22-30kts. Could be gusts up to 35kts at DLS and 
PDT. Winds will decrease tonight to around 10kts or less and 
remain lower through tomorrow, except at DLS which will increase 
to 12-18kts.


&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  53  80  54  84 /   0   0   0   0 
ALW  54  81  56  86 /   0   0   0   0 
PSC  56  83  57  87 /   0   0   0   0 
YKM  52  82  55  82 /   0   0   0  10 
HRI  55  83  57  86 /   0   0   0   0 
ELN  53  76  56  76 /   0   0   0  10 
RDM  44  78  47  81 /   0   0   0   0 
LGD  50  76  52  80 /   0   0   0  10 
GCD  48  78  51  83 /   0   0   0   0 
DLS  57  79  59  79 /  10   0   0   0 

&&

.PDT WATCHES/WARNINGS/ADVISORIES...

OR...Wind Advisory until 11 PM PDT this evening for ORZ041.

WA...Wind Advisory until 11 PM PDT this evening for WAZ024-026.

&&

$$

84/84/84