Area Forecast Discussion
Issued by NWS Spokane, WA

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FXUS66 KOTX 241822
AFDOTX

Area Forecast Discussion
National Weather Service Spokane WA
1022 AM PST Tue Jan 24 2017

.SYNOPSIS...
A pair of weak disturbances will move through the region today
through Wednesday and will result in light snow showers or snow
flurries. By midweek a strong ridge will build over the Pacific
Northwest. This will bring dry and cooler weather with an
abundance of low clouds and fog in the valleys.


&&

.DISCUSSION...
Widespread stratus along with localized fog is entrenched across
the majority of the forecast area today. Yesterday there was some
mixing and a few hours of broken skies late in the afternoon.
However, the inversion is slightly stronger today and the breaks
will be harder to come by. Another difference from yesterday is we
have a weak upper level disturbance moving through the eastern
portion of the forecast area at the time. Not much in the way of
moisture or dynamics with this feature, however, in the lower
layers it has increased the isentropic up-glide enough for some
light snow to get squeezed out of the stratus. It is likely to
snow lightly on and off through the afternoon with little snow
accumulation expected. Another wave follows quickly this evening
to keep some mention of light snow in the forecast for tonight as
well. Tobin

&&

.AVIATION...
18Z TAFS: Fog and stratus will continue to hamper air operations
for the next 24 hours. A weak wave is moving south along the Idaho
Panhandle at the time and this is resulting in enough low level
lift for light snow to fall out of the stratus...especially for
KGEG-KSFF-KCOE-KPUW and to a lesser extent KLWS. The light snow
will result in fluctuating conditons with cigs/vsby rapidly
changing from IFR/LIFR and up to IFR/MVFR. KMWH is just on the
periphery of the snow and may have a chance for a few flurries
through the afternoon but there is more confidence in LIFR
vis/cigs with fog. KEAT will stay out of the stratus and be too
far west for any -sn/fog/stratus and expect VFR conditions. Some
stratus may be able to move into KEAT between 09-12z. Another wave
will follow a similar track this evening and will result in
similar conditions through the night. Tobin

&&

.PRELIMINARY POINT TEMPS/POPS...
Spokane        31  25  33  23  29  23 /  20  20  10  10  10  10
Coeur d`Alene  32  25  33  23  29  23 /  30  30  20  20  10  10
Pullman        31  25  33  22  30  21 /  30  30  20  10  20  10
Lewiston       34  28  35  24  34  25 /  30  30  20  10  20  10
Colville       32  25  32  20  30  23 /   0  10  10  10  10  10
Sandpoint      29  24  33  23  30  23 /  20  20  20  20  10  10
Kellogg        30  24  31  22  29  21 /  50  50  40  20  20  10
Moses Lake     32  21  34  20  30  22 /   0   0  10  10  10  10
Wenatchee      29  23  33  22  29  23 /   0   0   0  10  10  10
Omak           34  22  31  20  29  23 /   0   0  10  10  10  10

&&

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

$$



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