Figure 1 depicts the surface observations at 7:00 pm CDT, which shows a cold front moving through Manitoba. This front became the focus for thunderstorms across southern Manitoba, which ultimately led to this tornado in the early afternoon hours of July 13th.

According to Environment and Climate Change Canada (2018), an F0 tornado touched down at 11:55 am CDT near Lilyfield, MB. The path and width of the tornado was not documented by ECCC. The tornado caused no fatalities, injuries or documented property damage.
Sources
NWS Weather Prediction Center Surface Analysis Archive. (2017). Surface analysis 00Z Mon Jul 14 2003. 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/