Figure 1 shows the surface observations at 10:00 pm CDT, which shows an occluding low pressure across northern Saskatchewan with a cold front extending south across Manitoba and a warm front extending east across northern Manitoba. A thunderstorm (marked as ‘R’) is also observed at this time. This thunderstorm was responsible for a tornado in the evening hours of June 8th.
According to Environment and Climate Change Canada (2018), an F0 tornado touched down at 8:00 pm CDT near Churchill, MB. The track 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 00Z Sun Jun 9 1991. 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/