Area Forecast Discussion
Issued by NWS Spokane, WA

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FXUS66 KOTX 030302
AFDOTX

Area Forecast Discussion
National Weather Service Spokane WA
702 PM PST MON MAR 2 2015

.SYNOPSIS...
A weather system will pass through this evening, with potential
for scattered snow showers along with breezy conditions across
much of the region. The snow shower threat and winds abate
overnight into Tuesday.  Much colder air moves in behind this
system, with temperatures well below average for the middle of the
week. A dry period, with moderating temperature will follow for
the end of the week.


&&

.DISCUSSION...
Updates to zones and grids to better address the localized snow
accumulations associated with the convective showers moving south
at about 25 mph through Eastern Washington and parts of North
Idaho right now. They are all associated with peak heating of the
evening and a shortwave dropping down through the area which is
quite visible as a small localized area of rotation on the water
vapor channel. Some webcams and spotters have noted they have
received up to two inches of snow under the more heavier snow
showers and/or have been hit with more than one snow shower this
evening. Zones have better wording to address this and note that
the trend is for all the convective snow showers to decrease
overnight. Potential additional impacts brought about by this snow
would be refreezing of any lingering snowmelt on roadways tonight
which could result in slick conditions later on tonight and into
Tuesday morning.  /Pelatti


&&

.AVIATION...
00Z TAFS: A shortwave will drop south across the east WA/north ID
between 00-06Z, with scattered snow showers. With unstable lapses
accompanying these some of these could be locally heavy, producing
brief reductions to MVFR conditions, especially around
GEG/SFF/COE. They will be more isolated toward PUW/LWS. The threat
will wane after 03-04Z over most locations, but could some
potential may linger through 08Z. EAT/MWH will mainly dry, with
only the off chance of a flurry. Otherwise look for VFR conditions
here. Expect breezy conditions around 15 to 25kts, with gusts to
30 around MWH. Other breezy conditions are expected at EAT, as
well as GEG to COE with the incoming shortwave. However speeds
will be a bit less, at 10 to 20kts. Speeds in general will abate
after 08-11Z. /J. Cote`



&&

.PRELIMINARY POINT TEMPS/POPS...
Spokane        18  37  17  43  23  48 /  50   0   0   0   0   0
Coeur d`Alene  16  37  14  43  21  49 /  50   0   0   0   0   0
Pullman        18  37  17  43  26  51 /  50   0   0   0   0   0
Lewiston       26  40  20  47  27  54 /  30  10   0   0   0   0
Colville       21  41  16  45  22  50 /  50   0   0   0   0   0
Sandpoint      17  34  12  41  21  44 /  50   0   0   0   0   0
Kellogg        17  32  13  40  22  45 /  70   0   0   0   0   0
Moses Lake     22  44  20  48  26  53 /  10   0   0   0   0   0
Wenatchee      27  45  20  50  29  54 /   0   0   0   0   0   0
Omak           22  45  19  47  24  52 /   0   0   0   0   0   0

&&

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

$$




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