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Area forecast discussion
National Weather Service Spokane Washington
720 PM PDT Tue may 23 2017

Synopsis...
a strong cold front will plow through the region this evening
bringing gusty winds especially to central Washington. Blustery
conditions will persist into Wednesday with afternoon temperatures
a solid twenty degrees cooler than today. Scattered showers and
thunderstorms will be possible on Thursday. Sunny and warmer
weather will return for the Memorial Day weekend with high
temperatures warming back into the 80s.

&&

Discussion...

..windy tonight with gusts of 50 miles per hour or more around Wenatchee...
Waterville...Chelan and Vantage...

Cold front is almost to the crest of the Cascades. Expect it to
cross the Cascades in the next hour. Winds will become even more
windy once it passes the Cascades. Some isolated strong winds are
already occurring on the higher benches/elevations around Chelan
and Entiat. These winds will continue and become stronger as the
front passes this evening. The current Wind Advisory looks to be
on track for tonight. /Nisbet



&&

Aviation...
00z tafs: the passage of a dry cold front this evening will
produce a sharp increase in west winds for the inland northwest.
The timing and strength of the winds will be the biggest challenge
for the tafs. It is often difficult for strong and gusty winds to
persist all night long, but tonight's cold front is particularly
strong. The strongest gusts will likely occur at the Wenatchee and
Chelan airports (up to 35kts from 01z to 08z) with the
contribution of gap winds accelerating through the Wenatchee
valley and Down Lake Chelan. Further east, places like Spokane,
Coeur D'Alene, Pullman, and Lewiston will experience the tightest
pressure gradient and strongest 850mb winds btwn 05z and 12z
which is the toughest time for efficient low level mixing.
Breezy westerly winds will continue through the day Wednesday at
all taf locations.



&&

Preliminary point temps/pops...
Spokane 49 62 46 67 47 71 / 0 10 10 20 20 10
Coeur D'Alene 49 62 44 66 44 70 / 0 10 10 30 30 20
Pullman 49 62 44 64 43 69 / 0 0 10 20 20 10
Lewiston 54 68 48 70 48 75 / 0 0 10 20 20 10
Colville 49 64 45 68 46 74 / 0 10 0 40 20 10
Sandpoint 48 62 40 64 41 69 / 0 20 10 30 30 20
Kellogg 45 59 41 63 41 68 / 10 10 10 20 30 20
Moses Lake 55 71 48 74 49 79 / 0 0 10 10 10 0
Wenatchee 55 68 49 74 51 79 / 0 0 10 20 10 0
Omak 51 70 49 74 49 79 / 0 0 10 20 10 0

&&

Otx watches/warnings/advisories...
Idaho...none.
Washington...Wind Advisory from 9 PM this evening to 3 am PDT Wednesday for
Moses Lake area-Waterville Plateau-Wenatchee area.

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