Figure 1 shows the surface observations at 4:00 pm CDT, which shows an occluding low pressure over southern Saskatchewan with a warm front extending northeast across Manitoba and a cold front extending south across southwestern Manitoba. The cold front became the focus for intense thunderstorms across southern Manitoba in the afternoon and evening hours of June 12th, which ultimately led to several tornadoes.
Several tornadoes occurred on this day:
According to Environment and Climate Change Canada (2018), an F1 tornado touched down at 6:00 pm CDT near Brookdale, 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 21Z Sat Jun 12 1993. 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/