Figure 1 depicts the surface observations at 1:00 pm CDT, which shows a trough of low pressure extending southeast across central Manitoba. This front became the focus for thunderstorms across central Manitoba, which led to two tornadoes across southern Manitoba on this day:
According to Environment and Climate Change Canada (2018), an F0 tornado touched down at 2:00 pm CDT 31 km northeast of Skowman, 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 18Z Sun Jul 20 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/