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Area forecast discussion 
National Weather Service Spokane Washington
1110 am PDT Tuesday Mar 31 2015

Synopsis...
a vigorous cold front will move through the area today. The front
will bring gusty winds today...as well as colder temperatures and
showers through the remainder of the work week. The weekend could
be even cooler with continued showers.

&&

Discussion...
morning update: the cold front continues to slowly work east
through the region with the 1030 am position roughly from Bonners
Ferry to Moscow and bending back toward Walla Walla. Scattered
light showers have increased ahead of the front but precipitation
amounts have been light and generally between a trace and few
hundreths.

Meanwhile, the cold pool is already over central Washington with isolated
showers developing over Ferry County and a few lightning strikes
just north of the border. The Puget Sound convergence zone has
also sprung to life with narrow bands of precipitation already
impacting southern Chelan. Snow has been falling on Stevens Pass
but above freezing temperatures have kept any accumulations to
grassy surfaces.

Winds are picking up behind the front as cooler air spills into
the region and pressure gradients continue to tighten. The 10am
pressure gradient between pdx-gpi (portland-kalispell) is already
up to 12mb and should peak around 15-16mb this afternoon. This
will support sustained winds of 15-30 mph. Winds roughly 4-6k ft
are only on the order of 25-30kts so the threat for gusts in
excess of 40 mph is low.

&&

Aviation...
18z tafs: a cold front has shifted into Idaho with scattered light
showers and occasional MVFR cigs. Strong gusty winds have already
developed for most terminals and will continue to increase during
the afternoon hours before relaxing this evening and overnight.
Afternoon instability will promote isolated showers and a few
thunderstorms with the highest threat over the northern/eastern
mountains. A second wave currently offshore will renew the threat
for showers overnight for southeast Washington and vcnty of kpuw/klws. /Sb




&&

Preliminary point temps/pops...
Spokane 56 32 51 29 51 31 / 30 10 40 20 20 20
Coeur D'Alene 55 30 51 28 49 30 / 40 10 60 30 30 30
Pullman 52 33 49 30 48 32 / 40 20 40 30 20 10
Lewiston 58 36 54 33 53 34 / 30 20 40 20 20 10
Colville 60 32 55 29 54 31 / 50 30 40 20 20 10
Sandpoint 54 29 51 27 49 28 / 50 30 60 20 40 30
Kellogg 52 32 45 29 44 31 / 80 30 60 50 50 30
Moses Lake 61 34 59 29 59 31 / 10 10 20 0 0 10
Wenatchee 61 39 58 34 58 37 / 10 20 20 0 10 10
Omak 60 32 57 29 59 32 / 10 10 30 10 10 10

&&

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

$$

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