Missanabie, ON F1 Tornado of September 12, 2011

Timmins - Cochrane

This F1 tornado touched down to the northeast of Wawa, near Missanabie, producing tree damage as it passed through area forest.

Figure 1. Surface analysis at 18Z on September 12, 2011 showing mean sea-level pressure (MSLP) contours, surface observations, fronts and pressure centres (WPC, 2017)

Figure 1 depicts the surface observations at 2:00 pm EDT, which shows a stationary front across Lake Superior. This front likely initiated storms in parts of Ontario as a warm front moved north, which ultimately led to this tornado.


NWS Weather Prediction Center Surface Analysis Archive. (2017).Surface analysis 18Z Mon Sep 12 2011. Retrieved from: https://www.wpc.ncep.noaa.gov/archives/web_pages/sfc/sfc_archive.php