Figure 1 shows the surface observations at 4:00 pm CDT, which shows an occluded low pressure across Saskatchewan with an occluded front extending south across southern Manitoba. This front became the focus for thunderstorms in the early afternoon hours of June 19th, which ultimately resulted in two tornadoes.
According to Environment and Climate Change Canada (2018), an F0 tornado touched down at 1:50 pm CDT near Boissevain, MB. The tornado travelled for 15.3 km and had a maximum width of 320 metres. The tornado caused no fatalities, injuries or property damage.
NWS Weather Prediction Center Surface Analysis Archive. (2017). Surface analysis 21Z Thu Jun 19 1997. Retrieved from: https://www.wpc.ncep.noaa.gov/archives/web_pages/sfc/sfc_archive.php
Environment and Climate Change Canada Data. (2018). Canadian National Tornado Database: Verified Events (1980-2009) – Public. Retrieved from: http://donnees.ec.gc.ca/data/weather/products/canadian-national-tornado-database-verified-events-1980-2009-public/