Odessa, ON F2 Tornado of September 8, 2012

Lennox and Addington

This F2 tornado struck just to the southwest of Storms Corners, snapping trees and destroying barns, outbuildings and a house trailer. It was a relatively rare morning tornado that touched down at 10:00 am EDT. It travelled for 6 km near the village, which is about 10 km east of Napanee. It was up to 150 metres wide and produced extensive tree damage, with some branches thrown and sent piercing the ground. Early in its path a barn was struck and its debris carried for more than 4 km, and an old farm house had much of its roof torn off.

At one property that sustained extensive damage, a new and well-anchored shed was levelled to its foundation, but luckily a man inside took shelter under a workbench and emerged unharmed. Heavy farm machinery was thrown over 100m and a house trailer was tossed 30m and destroyed, earning the tornado its low-end F2 rating. A local resident reportedly observed the tornado which he described as being a large and brown, swirling mass of debris.

Figure 1. Surface analysis at 15Z on September 8, 2012 showing mean sea-level pressure (MSLP) contours, surface observations, fronts and pressure centres (WPC, 2017)

Figure 1 depicts the surface observations at 11:00 am EDT, which shows a warm front across southeastern Ontario and a cold front moving across Lake Ontario. The cold front became the focus for intense thunderstorms in the early afternoon hours of September 8th, which led to this strong F2 tornado.


NWS Weather Prediction Center Surface Analysis Archive. (2017). Surface analysis 15Z Sat Sep 8 2012. Retrieved from: https://www.wpc.ncep.noaa.gov/archives/web_pages/sfc/sfc_archive.php