Figure 1 shows the surface observations at 10:00 am CDT, which shows a a cold front moving south across southern Manitoba and a trough of low pressure moving east across southern Manitoba. The intersection of the trough and the cold front became the focus for thunderstorm activity in the morning hours of July 2nd, which ultimately led to this tornado.
According to Environment and Climate Change Canada (2018), an F0 tornado touched down at 12:45 am CDT near La Salle, 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 15Z Thu Jul 2 1998. 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/