Val Gagné, ON F1 Tornado of September 3, 2004

Timmins - Cochrane

This tornado caused damage on a path that was 6 kilometres long and half a kilometre wide. It caused extensive tree damage, levelled a garage to its foundation, tore the roof off of a barn and threw it 100 metres. In addition, one house received damage to its shingles and siding.

Figure 1 depicts the surface observations at 2:00 pm EDT, which shows a cold front moving through central Quebec and Ontario. While it is not known at which time this tornado occurred, thunderstorms initiated along this front, which ultimately led to this tornado.

Figure 1. Surface analysis at 18Z on September 3, 2004 showing mean sea-level pressure (MSLP) contours, surface observations, fronts and pressure centres (WPC, 2017)

According to Environment and Climate Change Canada (2018), an F1 tornado touched down near Val Gagné, ON. The tornado travelled for 6 km with a maximum width of 500 metres. The tornado caused no fatalities, injuries or property damage.


NWS Weather Prediction Center Surface Analysis Archive. (2017). Surface analysis 18Z Fri Sep 3 2004. Retrieved from:

Environment and Climate Change Canada Data. (2018). Canadian National Tornado Database: Verified Events (1980-2009) – Public. Retrieved from: