Figure 1 shows the surface observations at 1:00 pm CDT, which shows a trough of low pressure across south-central Manitoba. This trough initiated thunderstorms in the morning hours of June 19th, which ultimately led to this brief tornado.
According to Environment and Climate Change Canada (2018), an F0 tornado touched down at 1:25 pm CDT near Green Ridge, MB. The track 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 18Z Tue Jun 19 1990. 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/