Area Forecast Discussion
Issued by NWS Spokane, WA

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FXUS66 KOTX 292342
AFDOTX

Area Forecast Discussion
National Weather Service Spokane WA
442 PM PDT WED JUL 29 2015

.SYNOPSIS....
A dry and increasingly hot weather pattern will develop Thursday
and persist through the weekend. High temperatures in the mid 90s
to low 100s will be common through the weekend. A gradual cooling
trend early next week should bring temperatures close to average
by Wednesday.

&&

.DISCUSSION...

Tonight through Thursday: The models are in good agreement with
the high pressure building into the region. This will continue the
warming, drying trend during this period. There is not too much
weather to discuss as the dry air will keep the heat of precip or
thunderstorms to zero. Winds will be fairly calm as the pressure
gradient is not fairly tight in the region. Temperatures are
expected to be around 10 degrees above the normal for this time of
year. /JDC

Thursday night through Wednesday...Friday appears to be the
hottest and driest day of the seven day forecast. An additional
nuisance will be a tightening pressure gradient resulting in some
breezing wording in the Cascade gaps. Some very slight cooling
occurs after when the longwave pattern undergoes subtle changes
with a minor disturbance flattening the top of it a bit and more
substantial disturbance coupled with monsoonal moisture runs up
from the south and brushes the southeast part of the forecast area
from about the Blue Mountains over to the Camas Prairie area as
early as Saturday night with other similar monsoonal moisture
coupled disturbances coming up Sunday. Sunday night on through
Wednesday another Gulf of Alaska low and associated trof remains
positioned off the coast and as a result positions the 500mb ridge
to the east over Montana. This positioning allows for potential
for additional shortwaves to run up underneath the west side of
the ridge with a southwest to northeast trajectory over Eastern
Washington and Northern Idaho. This flow pattern has enough of a
westerly component to down-slope off the cascades to a certain
extend keeping a good portion of the forecast area dry with the
exception of perhaps moving the small mention of thunderstorms
further north over North Idaho. Forecast temperatures remain well
above average through this time interval. /Pelatti

&&

.AVIATION...
00Z TAFS: Mainly clear skies and light, terrain driven winds are
expected over eastern Washington and north Idaho through 00z
Friday. /GKoch

&&

.PRELIMINARY POINT TEMPS/POPS...
Spokane        61  95  64  98  64  97 /   0   0   0   0   0   0
Coeur d`Alene  57  93  59  96  58  95 /   0   0   0   0   0   0
Pullman        54  94  57  97  56  96 /   0   0   0   0   0   0
Lewiston       63 102  68 104  69 103 /   0   0   0   0   0  10
Colville       56  96  57 100  57  99 /   0   0   0   0   0   0
Sandpoint      51  89  52  94  51  93 /   0   0   0   0   0   0
Kellogg        54  92  57  96  57  95 /   0   0   0   0   0   0
Moses Lake     60  99  62 102  63 101 /   0   0   0   0   0   0
Wenatchee      67 101  70 101  70 100 /   0   0   0   0   0   0
Omak           60  99  62 101  62 100 /   0   0   0   0   0   0

&&

.OTX WATCHES/WARNINGS/ADVISORIES...
ID...None.
WA...None.
&&

$$



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