46°35'N / 111°54'W / Altitude 1185 m / 14:16 2026/04/21, America/Denver (UTC-6)
From: 2026/04/20, 23:33
To: 2026/04/21, 18:15
* WHAT...Heavy snow possible. Total snow accumulations between 4 and 10 inches, with isolated higher amounts possible. Winds could gust as high as 50 mph. * WHERE...Big Belt, Bridger and Castle Mountains, Little Belt and Highwood Mountains, and Gallatin and Madison County Mountains and Centennial Mountains. * WHEN...From Wednesday evening through Thursday afternoon. * IMPACTS...Tire chains may be required for some vehicles if traveling through mountain passes. Strong winds could cause tree or power line damage.
Lewis and Clark
Remember, a Winter Storm Watch means that there is at least a 50%
chance of impactful winter weather conditions during the watch
period.
To see a graphical representation of the degree of stress on young
livestock please visit our webpage and select Local Programs then
Cold Air Advisory for Newborn Livestock.
NWS Great Falls MT
2026/04/20, 23:33