Figure 1 depicts the surface observations at 12:00 pm MDT, which shows a cold front moving across Alberta. This front became the focus for thunderstorms, which ultimately resulted in four tornadoes.
The other tornadoes that occurred on this day were:
According to Environment and Climate Change Canada (2018), an F1 tornado touched down at 5:30 pm MDT near Stirling, AB. The path and width of the tornado was not documented by ECCC.
NWS Weather Prediction Center Surface Analysis Archive. (2017). Surface analysis 18Z Tue Jun 28 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/