Figure 1 depicts the surface observations at 1:00 am CDT, which shows an occluding front across southeastern Saskatchewan and into North Dakota. This front became the focus for thunderstorm activity, which ultimately led to this tornado.
According to Environment and Climate Change Canada (2018), an F1 tornado touched down at 1:53 am CDT in Melita, MB. The path and width of the tornado was not documented by ECCC. The tornado caused no fatalities, injuries or documented property damage.
NWS Weather Prediction Center Surface Analysis Archive. (2017). Surface analysis 06Z Mon Jun 7 2004. 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/