Scientific Forecaster Discussion
Area forecast discussion
National Weather Service Missoula Montana
215 PM MDT Fri Oct 21 2016
Discussion...latest radar and satellite imagery is showing our
next surge of moisture currently pushing through the Idaho
Panhandle and parts of northwest Montana. For rest of this
afternoon, most of the rain is expected to be light and mainly
focused over Lookout Pass and northwest Montana.
Starting tonight, a stronger surge of moisture is expected to
push through with periods of moderate precipitation over the
clearwaters of Idaho and stretching to the bob Marshall
wilderness. Snow levels will drop down to around 6000 feet and
light to moderate snow accumulations are expected by Saturday
morning. Periods of moderate rain for valleys of northwest
Montana, west central Montana and Idaho County overnight could
lead to some ponding of roadways for travelers Saturday morning.
Precipitation will be decreasing throughout the morning Saturday
with only a few light showers possible by the afternoon.
High pressure will support generally dry conditions Saturday night
into Monday over north central Idaho and western Montana.
Temperatures should warm to 5 to 7 degrees above normal Sunday
afternoon. However, areas of valley fog should develop Saturday
night and persist into Sunday morning.
The next weather system will begin spreading more and more
clouds/moisture over the area Monday with areas of light
precipitation possible by Tuesday.
There is quite a bit of uncertainty...compared to normal...in the
forecast for mid to end of next week. However, some additional
Pacific moisture and energy may brush the northern rockies at
Aviation...light rain showers are expected to increase over kgpi
this afternoon with the main impacts being mountain obscurations.
A secondary and stronger surge of moisture is expected this
evening and tonight which will bring reduced visibilities and
lower ceilings to kgpi and kmso. Rain will be on the decrease
during the morning, but low ceilings and reduced visibilities are
expected for much of Saturday morning. Patchy fog could also be
possible for kgpi and kmso on Saturday morning but is looking more
likely for Sunday morning.