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Area forecast discussion 
National Weather Service Spokane Washington
929 PM PDT Wednesday Aug 20 2014

Synopsis...
cooler temperatures and the occasional threat of showers and
thunderstorms will linger the rest of the week and into the
weekend. Thunderstorms will be slow moving with the cores of these
storms containing very heavy rainfall. This may lead to some rapid
runoff in steep terrain and possibly flash flooding or debris
flows, especially on burn scars along the east slopes of the
Cascades with Friday having the best potential. Warmer and drier
weather is expected toward the middle portion of next week.



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Discussion...
we continue to monitor the radar this evening as scattered
showers and isolated thunderstorms move through northeastern Washington
and north Idaho. The thunderstorms are mainly south of
Spokane...impacting Tyler...Rockford...Tekoa and Worley. Areas to
the north are seeing showers, but no lightning for at least the
last 45 min or so. Models are showing elevated instability
continuing through the night. Expect hit and miss showers through
the night. The main impact being very heavy rain. An isolated clap
of thunder is possible, but the main threat will be the rain.
/Nisbet

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Aviation...
00z tafs: thunderstorms continue across the northern mountains of
Washington and north Idaho. These storms are expected to push into the
vicinity of kgeg, ksff and kcoe aft 00z. Impacts from convection
today will include: outflow winds up to 35 mph, small hail and
very heavy rain. Showers and thunderstorms will wind down after
06z this evening with VFR conditions expected at all taf sites
for the next 24 hrs.

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Preliminary point temps/pops...
Spokane 56 77 55 75 52 76 / 50 10 20 40 20 10
Coeur D'Alene 53 75 54 74 52 74 / 50 20 30 50 30 10
Pullman 51 78 48 76 50 74 / 0 10 20 20 40 30
Lewiston 59 83 57 82 57 80 / 0 0 20 20 40 30
Colville 52 79 52 79 50 79 / 50 70 60 60 30 10
Sandpoint 51 71 51 71 49 74 / 60 60 60 60 30 10
Kellogg 54 71 51 69 49 70 / 40 30 40 60 50 30
Moses Lake 56 83 56 83 55 82 / 0 10 10 30 30 10
Wenatchee 61 81 61 80 59 83 / 0 10 20 50 30 10
Omak 58 82 58 80 55 83 / 20 30 60 50 30 10

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Otx watches/warnings/advisories...
Idaho...none.
Washington...Flash Flood Watch from Friday afternoon through Friday evening
for east slopes northern Cascades-Okanogan Valley-Wenatchee
area.

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