Bowsman, MB F0 Tornado of July 31, 2004

Swan River - Duck Mountain - Porcupine

Figure 1 depicts the surface observations at 1:00 pm CDT, which shows a warm front extending south across central Manitoba. This front became the focus for thunderstorms across central Manitoba, which ultimately to this tornado.

Figure 1. Surface analysis at 18Z on June 31, 2004 showing mean sea-level pressure (MSLP) contours, surface observations, fronts and pressure centres (WPC, 2017)

According to Environment and Climate Change Canada (2018), an F0 tornado touched down at 1:15 pm CDT near Bowsman, MB. The path and width of the tornado was not documented by ECCC. The tornado caused no fatalities, injuries or documented property damage.


NWS Weather Prediction Center Surface Analysis Archive. (2017). Surface analysis 18Z Sat Jul 31 2004. Retrieved from:

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