Figure 1 shows the surface observations at 7:00 am CDT, which shows a low pressure system in central Manitoba with a cold front extending south across southern Manitoba. A second low pressure is observed on the Manitoba/Saskatchewan border with a warm front extending east across northern Manitoba. The warm front became the focus for thunderstorms in the early morning hours of June 27th, which ultimately led to this tornado.
According to Environment and Climate Change Canada (2018), an F0 tornado touched down at 8:00 am CDT near Thompson, MB. The tornado travelled for 140 metres, but its width was not documented by ECCC. The tornado caused no fatalities, injuries or property damage.
NWS Weather Prediction Center Surface Analysis Archive. (2017). Surface analysis 12Z Fri Jun 27 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/