Area Forecast Discussion
Issued by NWS Pendleton, OR

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FXUS66 KPDT 280516
AFDPDT

Area Forecast Discussion
National Weather Service Pendleton OR
1016 PM PDT Tue Jun 27 2017

Updated aviation discussion

.SHORT TERM...Tonight and Wednesday...Forecast area will be
under a weak cyclonic flow as an upper level low passes through
western Canada overnight and Wednesday. This will places us under a
dry northwest flow aloft with mostly clear skies and seasonable
temperatures. It will also generate some locally breezy winds along
the east slopes of the Cascades spilling out into the Columbia Basin
through this evening and again Wednesday afternoon and evening.

.AVIATION...06Z TAFS...VFR conditions will persist across all
terminal locations through the next 24 hours. Winds will increase
during the day becoming westerly 10-20kts.

&&

.PREV DISCUSSION... /issued 130 PM PDT Tue Jun 27 2017/

SHORT TERM...Upper level flow will shift from west to northwest
tonight as a ridge builds offshore. Winds will be locally breezy
to windy in the Kittitas Valley and Columbia River Gorge Wednesday
as cross Cascade pressure gradients increase gap winds.  The
upper level ridge will drift toward the coast Wednesday and
Thursday. Dry northerly flow will keep skies mostly clear with a
slow warming trend. The ridge will move inland and weaken Friday
as a short wave dives into MT. This wave will increase sky cover
Friday in Wallowa County but precipitation is expected to remain
east of the CWA Friday.  Coonfield

LONG TERM...Friday night through Sunday. Dry westerly flow aloft
over the region this weekend. Skies will be clear to partly cloudy.
Temperatures will be a few degrees above normal with highs in the
80s to lower 90s. Lows in the upper 40s and 50s.  94

Monday through Wednesday morning...Models remain in good agreement
of a continued zonal pattern with seasonable temperature...mostly
clear skies and little chance of precipitation. 74



&&

.PRELIMINARY POINT TEMPS/POPS...
PDT  55  82  54  85 /   0   0   0   0
ALW  60  84  59  87 /   0   0   0   0
PSC  58  88  56  90 /   0   0   0   0
YKM  57  87  56  89 /   0   0   0   0
HRI  58  85  55  88 /   0   0   0   0
ELN  56  82  55  86 /   0   0   0   0
RDM  43  81  41  85 /   0   0   0   0
LGD  49  78  46  82 /   0   0   0   0
GCD  47  80  40  84 /   0   0   0   0
DLS  58  81  58  88 /   0   0   0   0

&&

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

$$

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