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fxus66 kotx 241629 
afdotx

Area forecast discussion
National Weather Service Spokane Washington
829 am PST Fri Feb 24 2017

Synopsis...
a cool and unsettled pattern will continue over the inland northwest
right into the weekend and into early next week. The main
precipitation threat will be mainly mountain based snow showers,
but a stronger system on Sunday may bring snow accumulations to
the valleys and basin. Temperatures will be cooler than normal for
this time of year with overnight lows in the teens and 20s and
daytime highs only in the 30s. A gradual warm up is forecast by
the middle of next week.

&&

Discussion...
morning update: minor changes to the forecast this morning to
adjust sky cover based on current satellite trends and to expand
the isolated flurries for the Spokane/Coeur D'Alene area and the
Palouse to include the morning hours. An expansion of stratus this
morning is occurring as boundary layer winds become an upslope
south- southwest direction combined with a near saturated boundary
layer. In addition...weak lift in the dendritic layer has
allowing isolated flurries to develop. Also made a few updates to
high temperatures this afternoon along the east slopes of the
Cascade valleys and the Okanogan Valley. Latest guidance is coming
in a few degrees cooler and with the cold start this morning and
the potential for some increase in cloud cover through the day
forecast leans in this direction. Jw

&&

Aviation...
12z tafs: for the first time in a long while, the forecast is
somewhat straight forward. Fog and stratus has been slow to form
this morning and the latest satellite imagery suggests most of it is
poised near the Washington/Idaho border. It has been slow to expand westward,
but it will occasionally impact Coe and puw with MVFR cigs and a
small chance of IFR visibility values at Coe. While we can't
entirely rule out the chance of these low clouds spreading into geg,
lws and sff, the satellite trends don't support that notion. Mwh and
eat will very likely remain at VFR conditions. Later today a weak
disturbance will drop into the region from the northwest which will bring a
small chance of light snow showers. If they hit any of the airports
we suspect conditions will remain in the VFR range. Overnight the
threat of snow showers will decrease and high clouds will thicken
from the west. This should greatly decrease the threat of fog
reforming late in the forecast period. Fx



&&

Preliminary point temps/pops...
Spokane 34 19 33 24 34 22 / 10 10 10 30 60 40
Coeur D'Alene 34 16 33 23 34 21 / 10 10 10 50 60 50
Pullman 35 21 35 25 36 24 / 10 10 10 30 70 60
Lewiston 39 25 40 28 41 28 / 10 10 10 20 60 40
Colville 35 16 34 24 35 20 / 20 10 10 30 50 20
Sandpoint 33 17 33 23 33 20 / 20 10 20 60 60 40
Kellogg 32 19 32 24 33 23 / 20 10 40 60 70 60
Moses Lake 38 17 36 25 36 23 / 10 0 0 20 30 20
Wenatchee 39 17 34 24 35 22 / 10 10 0 30 40 20
Omak 35 17 33 24 34 22 / 10 10 0 40 50 20

&&

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

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