Figure 1 shows the surface observations at 10:00 am CDT, which shows a trough of low pressure moving southeast across southern Manitoba and southern Saskatchewan.
According to Environment and Climate Change Canada (2018), an F0 tornado touched down at 10:30 am CDT near La Piney, 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 Tue Jul 6 1999. 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/