Irma, AB F1 Tornado of June 28, 1988

Lloydminster - Wainwright - Vermillion - Provost

Figure 1 depicts the surface observations at 12:00 pm MDT, which shows a cold front moving across Alberta. This front became the focus for thunderstorms, which ultimately resulted in four tornadoes.

The other tornadoes that occurred on this day were:

Figure 1. Surface analysis at 18Z on June 28, 1988 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 at 7:30 pm MDT 15 km north of Irma, AB and travelled for 8 km.


NWS Weather Prediction Center Surface Analysis Archive. (2017). Surface analysis 18Z Tue Jun 28 1988. Retrieved from:

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