Probabilistic Heavy Snow and Icing Discussion
NWS Weather Prediction Center College Park MD
301 PM EDT Sat May 04 2019

Valid 00Z Sun May 05 2019 - 00Z Wed May 08 2019


...Northern Rockies...

As mid level energy embedded within northwest flow interacts with
a frontal boundary banked along the high terrain, accumulating
snow remains likely for portions of the northern Rockies over the
next few days.  This is especially true for the Glacier National
Park region, where WPC guidance indicates a High Risk for snow
accumulations of 4-inches or more and a Slight Risk for
accumulations of 8-inches or more for portions of the Lewis Range
during the Day 1 period (ending 00Z Monday).

The probability of significant icing is less than 10 percent.

Pereira