Figure 1 depicts the surface observations at 12:00 pm MDT, which shows a low pressure system across Southeastern Alberta with a trough of low pressure across Southern Alberta extending westward.
There were three tornadoes on this day, the others being:
According to Environment and Climate Change Canada (2018), an F0 tornado touched down at 4:10 pm MDT 25 km south of Youngstown, AB. The path and width of the tornado was not documented by ECCC. The tornado injured two people.
NWS Weather Prediction Center Surface Analysis Archive. (2017). Surface analysis 18Z Fri Jul 6 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/