Event narrative (NOAA)
A high wind event moved across north central Montana on the 12th. Sustained wind speeds of 40 to 50 mph were very common throughout the afternoon, and into the evening hours. Wind gusts were near 70 mph during the peak of the event. These winds started to increase in strength around 1100 MST and then they did not diminish until 2000 MST. The peak wind speeds occurred between 1300 MST and 1600 MST. Due to the very strong winds, blowing dust became a real hazard. The blowing dust reduced visibilities to near zero in many locations for a period of time. As a result of the near zero visibilities, a 12 vehicle accident occurred about 13 miles Southeast of Great Falls near 1330 MST, resulting in 2 fatalities and 4 injuries.Power was knocked out to over 1500 customer in the Great Falls metro area
Other notable high wind events in Montana
Source: NOAA/NCEI Storm Events Database. Deaths and injuries are those NOAA classifies as direct. Damage is the reporting office's estimate at the time and is not inflation-adjusted. This is a catalogue record, not a forecast.