Figure 1 depicts the surface observations at 4:00 pm CDT, which shows a low pressure system across central Manitoba with a warm front extending east across central Manitoba and a cold front extending southward across southern Manitoba and eastern North Dakota. The cold front became the focus for thunderstorms in the evening hours of July 13th, which ultimately led to this tornado.

According to Environment and Climate Change Canada (2018), an F0 tornado touched down at 8:15 pm CDT near Petersfield, 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 21Z Thu Jul 13 2006. 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/