Hail — Pondera, Montana
2024-06-21 · near Brady, Pondera, Montana
2
Magnitude
Event narrative
The public reported golf ball sized hail along I-15. It was hailing long and hard enough, with low visibility, that vehicles had to pull over on I-15.
Wider weather episode
A shortwave within southwesterly flow aloft resulted in a few thunderstorms June 20 ahead of a more robust shortwave that brought numerous strong to severe thunderstorms to the region June 21. Moist low level easterly flow, the passing shortwave and ample westerly flow aloft resulted in a favorable environment for supercells the 21st, primarily capable of producing large hail.
View location on OpenStreetMap → (48.0400, -111.8300)
Source: NOAA Storm Events Database, event_id 1176036. Narrative written by the NWS forecast office that issued the report.