Domain, MB F1 Tornado of August 17, 1999

Portage La Prairie - Headingly - Brunkild

Figure 1 depicts the surface observations at 1:00 pm CDT, which shows a trough of low pressure moving eastward across southern Manitoba. This trough was the focus for intense thunderstorms in the afternoon hours of August 17, which ultimately led to two tornadoes across southern Manitoba.

Figure 1. Surface analysis at 18Z on August 17, 1999 showing mean sea-level pressure (MSLP) contours, surface observations, fronts and pressure centres (WPC, 2017)

According to Environment and Climate Change Canada (2018), an F1 tornado touched down at 3:55 pm CDT near Domain, MB. The path and width of the tornado was not documented by ECCC. The tornado caused no fatalities, injuries or property damage.


NWS Weather Prediction Center Surface Analysis Archive. (2017). Surface analysis 18Z Tue Aug 17 1999. Retrieved from:

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