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Area forecast discussion 
National Weather Service Spokane Washington
1040 am PDT Tuesday Sep 30 2014

Synopsis...
cooler temperatures will arrive today courtesy of a passing cold
front. The front will also deliver breezy winds and scattered
showers. Dry weather will return on Wednesday. Look for a warming
trend and a continuation of mainly dry conditions Thursday into
the weekend.

&&

Discussion...
made a few tweaks to the forecast. With upper trough over the
region, the cold front and first of the shortwaves is rolling
across extreme eastern Washington into north Idaho. Scattered
showers with embedded thunderstorms developed with this front and
should continue over north Idaho through late morning. A second
shortwave with the upper trough axis will move through across the
Cascades this afternoon and bring another round of convection to
the inland northwest. Given the daytime heating and surface based
instability up to 200 j/kg, could see showers with embedded
thunderstorms develop across the northeast quarter of the forecast
area. Rainfall amounts for the most part will be light, but could
see some isolated heavy downpours with heavier showers.
Temperatures will reflect more fall like conditions today. /Rfox.

&&

Aviation...
18z tafs: a cold front moved through eastern Washington and north
Idaho overnight. This afternoon, the Idaho Panhandle will be
squarely under the 500mb cold pool. Look for diurnally driven
showers to increase around 20z and persist until 02z. Some of the
strongest cells may produce a couple of lightning strikes and
brief heavy downpours. Thunderstorms will be handled on a
"nowcast" basis as we monitor radar trends this afternoon. The
Spokane, Coeur D'Alene, and Pullman tafs may require an amendment
to add a short-lived thunderstorm. As the sun sets, skies should
clear quickly with the loss of afternoon heating. /Gkoch

&&

Preliminary point temps/pops...
Spokane 63 40 61 39 64 45 / 30 10 0 0 0 10
Coeur D'Alene 62 40 62 40 63 43 / 50 20 0 0 0 10
Pullman 62 38 62 37 65 42 / 20 10 0 0 0 0
Lewiston 68 45 68 45 71 47 / 10 10 0 0 0 0
Colville 67 36 66 38 67 43 / 20 10 0 0 0 10
Sandpoint 60 39 60 36 61 39 / 70 30 0 10 0 10
Kellogg 56 37 56 40 59 43 / 60 30 10 10 0 10
Moses Lake 71 40 69 41 68 45 / 10 0 0 0 0 0
Wenatchee 69 46 68 45 69 49 / 0 0 0 0 0 10
Omak 69 38 66 39 66 46 / 20 10 0 0 0 10

&&

Otx watches/warnings/advisories...
Idaho...none.
Washington...none.
&&

$$

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