Figure 1 shows the surface observations at 7:00 am CDT, which shows a low pressure across western Manitoba with a stationary front extending northeast across Manitoba and a cold front extending south across southwestern Manitoba and western North Dakota. The warm sector became increasingly unstable during the early morning hours of July 15th, which led to thunderstorm development along the cold front and ultimately led to this tornado.
According to Environment and Climate Change Canada (2018), an F1 tornado occurred near Eriksdale, MB. The track, width, time and date 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 12Z Mon Jul 15 1991. 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/