Area Forecast Discussion
Issued by NWS Spokane, WA

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FXUS66 KOTX 301740
AFDOTX

Area Forecast Discussion
National Weather Service Spokane WA
1040 AM PDT TUE 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 NW. 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...
ID...None.
WA...None.
&&

$$



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