Storm Summary Number 1 for Northern Rockies Early Season Snowstorm
NWS Weather Prediction Center College Park MD
300 PM MDT Sat Sep 28 2019

...Snow is falling heavily at times across elevated portions of
western Washington, northern Idaho, and western Montana...

Winter Storm Warnings are in effect for parts of northeast
Washington, northern Idaho, and northwest Montana. Winter Weather
Advisories are in effect for the Cascades and northern Sierra
Nevada, northwest Oregon, central Idaho, southwest and
north-central Montana, and northwest Wyoming.

For a detailed graphical depiction of the latest watches, warnings
and advisories, please see www.weather.gov

At 200 PM MDT...An upper level trough diving into the Northwestern
U.S. is forcing low pressure to develop over the Great Basin. A
frigid airmass for late September has set up north of a stalled
frontal boundary in the Northern U.S. Rockies allowing for snow to
fall across these regions. Surface observations and radar have
indicated periods of snow are occurring in higher elevations of
western Montana, northern Idaho, and western Washington.

...Selected preliminary Storm Total Snowfall in inches from 600 PM
MDT Fri Sep 27 through 200 PM MDT Sat Sep 28...

...MONTANA...
EAST GLACIER PARK                    21.0                    
KIOWA 3 SW                           15.0                    
CHOTEAU 6 N                          13.0                    
PIKE CREEK                           12.0                    
DUPUYER CREEK 15 S                   10.0                    
BRADY 5 N                             8.0                    
BADGER PASS 25 WSW                    7.0                    
AUGUSTA                               6.0                    
CUT BANK                              4.0                    

...WASHINGTON...
BOYDS 4 W                             5.0                    


The low pressure system is forecast to track east across the
north-central Rockies tonight and into Sunday. Snow will continue
to fall heavily at times in mountainous terrain of western
Washington, northern Idaho, and western Montana. An additional 1-2
feet of snow is expected to fall along the higher elevations of
western Montana through Sunday afternoon with locally higher
amounts in excess of 3 feet possible. In northern Idaho, another
4-8 inches of snow is expected to accumulate through late Sunday.
Parts of the Cascades will also receive 5-10 inches of snow while
portions of the northern Sierra Nevada will pick up several inches
on average with locally higher amounts possible. Strong wind gusts
will also lead to blowing snow and snow drifts.

The next Storm Summary will be issued by the Weather Prediction
Center at 900 PM MDT. Please refer to your local National Weather
Service office for additional information on this event.

Mullinax