Hail — Silver Bow, Montana

2007-05-10 · near Butte, Silver Bow, Montana

Event narrative

A member of the public phoned in a report of nickel-sized hail. The storm developed on the southeast side of Butte and tracked northeast along the Continental Divide.

Wider weather episode

On May 10, a strong, negatively tilted upper level short wave trough moved Northeast across the area. Strong surface-based instability and mid-level jet support led to supercell development as the system interracted with a thermal trough that was positioned over the area.

View location on OpenStreetMap → (46.0000, -112.5300)

Source: NOAA Storm Events Database, event_id 22886. Narrative written by the NWS forecast office that issued the report.