Figure 1 depicts the surface observations at 4:00 pm CDT, which shows a stationary front across Southern Manitoba. This front was the focus for thunderstorms in the afternoon hours of May 25th, which ultimately led to this tornado.

According to Environment and Climate Change Canada (2018), an F0 tornado touched down at 4:25 pm CDT near Halbstadt, MB. The path of the tornado was not documented by ECCC, but its maximum width was 90 metres. No property damage was documented for this tornado.
Sources
NWS Weather Prediction Center Surface Analysis Archive. (2017). Surface analysis 21Z Sun May 25 2008. 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/