Excerpts From NOAA Weather Story—

For further details, contact Tanja Fransen (406228-4042) A large upper level low pressure system off the west coast created a series of events for three days across eastern Montana that led to severe weather with large hail and damaging winds as well as flash flooding.

June 8 2021:

The event started with thunderstorms kicking off north of I-94 in Dawson and Wibaux Counties with storms moving in a northerly direction. The largest reports of hail were 4” in diameter, 9 miles east of Glendive, and baseball size hail (2.75”) 15 miles north of Wibaux. Numerous reports of quarter to golf ball size hail were received in Wibaux, Dawson, Richland and Roosevelt Counties.

As the ...