Figure 1 shows the surface observations at 4:00 pm CDT, which shows a low pressure over Lake Manitoba and a warm front extending south across southeastern Manitoba. Northerly flow is observed across Lake Manitoba, which likely triggered lake-breezes south of the lake. Lake-breezes, aided by terrain interactions with the Manitoba Escarpment and a developing cold front (not depicted on Figure 1), likely triggered thunderstorms south of Lake Manitoba, which ultimately led to this tornado.
Several tornadoes occurred on this day:
- Westbourne, MB F2 Tornado
- Delta Beach, MB F0 Tornado
- St. Claude, MB F0 Tornado
- Reinland, MB to Leyden, ND F1 Tornado
According to Environment and Climate Change Canada (2018), an F1 tornado touched down at 5:15 pm CDT near Morden, MB. The tornado tracked for 31 km to Wallhalla, ND and had a maximum width of 600 metres. The tornado caused no fatalities, injuries or property damage.
NWS Weather Prediction Center Surface Analysis Archive. (2017). Surface analysis 21Z Mon Jun 22 1992. 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/