Figure 1 depicts the surface observations at 3:00 pm MDT, which shows a low pressure system near the Alberta/Saskatchewan border.
According to Environment and Climate Change Canada (2018), an F1 tornado touched down at 6:00 pm MDT near Vermillion, AB. The path and width of the tornado was not documented by ECCC.
NWS Weather Prediction Center Surface Analysis Archive. (2017). Surface analysis 21Z Fri Jun 10 1988. 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/