Area Forecast Discussion
Issued by NWS Spokane, WA

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FXUS66 KOTX 221807
AFDOTX

Area Forecast Discussion
National Weather Service Spokane WA
1107 AM PDT FRI AUG 22 2014

.UPDATE...


&&

.SYNOPSIS...
Friday will bring another round of showers and thunderstorms to
the region with the potential for more flash flooding over the
Cascades burn scars. The threat of scattered showers and
thunderstorms will continue through the weekend. A drier and
warmer weather pattern is expected for the new work week.


&&

.DISCUSSION...

Rest of Today: A weakening line of showers continues top push
through the southern Ferry, Stevens, and Pend Oreille counties
moving West to Northwest around 15 MPH. These cells are producing
lightning and brief periods of heavy rains. As the day progresses
and the Low shifts closer to Idaho, this line of showers will
swing into the Cascades and bring potential for flash flooding
mainly over recent burn scar areas. The bulk of the rain is
expected to fall around the 2 to 3 PM time frame. This flooding
can cause mud slides and debris flow. For the rest of the region,
convection in the afternoon will bring isolated thunderstorms.
These thunderstorms could produce brief heavy downpours and small
hail. The downpours can produce localized urban flooding. The best
time for convection will be around 2 to 6 PM. /JDC

&&

.AVIATION...
18Z TAFS: Broad area of low pressure aloft will promote widely
scattered showers and thunderstorms this afternoon. Every
terminal will stand a threat for storms, especially after 22z. As
the atmosphere stabilizes, the threat of thunderstorms in the
region diminishes after 03z. Winds will generally be out of the
north/northeast...locally gusty through the Okanogan Valley and
Purcell Trench impacting Omak...Sandpoint...and Couer D Alene
airports. /JDC


&&

.PRELIMINARY POINT TEMPS/POPS...
Spokane        75  55  75  54  79  56 /  40  30  10  10  20  30
Coeur d`Alene  73  54  73  51  77  53 /  50  30  10  10  20  30
Pullman        75  51  74  49  79  51 /  40  40  20  20  20  20
Lewiston       80  60  79  56  85  59 /  60  50  30  20  10  20
Colville       72  51  78  49  81  52 /  60  50  10  10  20  30
Sandpoint      69  50  71  46  75  49 /  70  40  10  20  20  30
Kellogg        68  52  67  47  72  53 /  70  40  40  20  30  30
Moses Lake     81  58  83  56  86  58 /  30  50  10   0  10  10
Wenatchee      80  63  82  58  84  64 /  40  60  10  10  20  10
Omak           79  59  82  53  85  58 /  50  40  10  10  20  10

&&

.OTX WATCHES/WARNINGS/ADVISORIES...
ID...None.
WA...Flash Flood Watch until 9 PM PDT this evening for East Slopes
     Northern Cascades-Okanogan Valley-Wenatchee Area.

&&

$$



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