Figure 1 depicts the surface observations at 7:00 pm CDT, which shows a low pressure system across northern Saskatchewan with a stationary front extending east across northern Manitoba. A trough of low pressure is observed across western Manitoba and moving east. An area of high pressure is also observed in extreme southeastern Manitoba.
According to Environment and Climate Change Canada (2018), an F0 tornado touched down at 7:35 pm CDT near Rosenort, 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 00Z Mon Jun 23 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/