McArthur Falls, MB F2 Tornado of August 5, 2006

Bissett - Nopiming Provincial Park - Pine Falls

Figure 1 depicts the surface observations at 1:00 pm CDT, which shows a low pressure system in central Manitoba with a warm front extending east across northwestern Ontario and a cold front extending south across southern Manitoba. The warm front became the focus for intense supercells in the afternoon hours of August 5th, which ultimately led to this long-track tornado.

Several tornadoes occurred on this day:

Figure 1. Surface analysis at 18Z on August 5, 2006 showing mean sea-level pressure (MSLP) contours, surface observations, fronts and pressure centres (WPC, 2017)

According to Environment and Climate Change Canada (2018), an F2 tornado touched down at 6:15 pm CDT 13 km near McArthur Falls, MB. The tornado travelled for 58.7 km and had a maximum width of 500 metres. The tornado caused no fatalities or documented property damage, but caused 19 injuries.


NWS Weather Prediction Center Surface Analysis Archive. (2017). Surface analysis 18Z Sat Aug 5 2006. Retrieved from:

Environment and Climate Change Canada Data. (2018). Canadian National Tornado Database: Verified Events (1980-2009) – Public. Retrieved from: