Holmesville, ON EF0 Tornado of June 22, 2015

Huron - Perth

Touching down at around 9:45 pm to the southeast of Goderich, this EF0 tornado produced minimal damage. It was photographed by storm chaser Dave Patrick as it touched down briefly near Holmesville. The tornado appeared as a stout stovepipe beneath a large, bowled wall cloud.

Tornado seen near Goderich, ON on Monday, June 22, 2015 (Dave Patrick/OntarioWeather.com).

Trees were snapped, a truck had its front grille torn off, and a large wagon was tossed into the side of a barn, puncturing the building. In addition, a house on the property was left splattered with leaves and mud, and had flashing torn from around its roof.

Figure 1. Surface analysis at 00Z on June 23, 2015 showing mean sea-level pressure (MSLP) contours, surface observations, fronts and pressure centres (WPC, 2017)

Figure 1 depicts the surface observations at 8:00 pm EDT, which shows a strong low pressure over Lake Superior with a cold front extending across the Midwest of the United States and a warm front extending across northern Michigan and southern Ontario. This warm front became the focus for thunderstorm activity in the late evening hours of June 22nd, which ultimately led to this tornado.


NWS Weather Prediction Center Surface Analysis Archive. (2017). Surface analysis 00Z Tue Jun 23 2015. Retrieved from: https://www.wpc.ncep.noaa.gov/archives/web_pages/sfc/sfc_archive.php