Blindman Valley, AB F1 Tornado of July 25, 1987

Red Deer - Ponoka - Innisfall - Stettler

Figure 1 depicts the surface observations at 3:00 pm MDT, which shows a stationary front across Alberta and Saskatchewan. This front was the focus for thunderstorms across the afternoon and evening hours of July 25th, which ultimately resulted in eight tornadoes across Alberta.

The other tornadoes that occurred on this day were:

Figure 1. Surface analysis at 21Z on July 25, 1987 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 Blindman Valley, AB. The path and width of the tornado was not documented by ECCC.


NWS Weather Prediction Center Surface Analysis Archive. (2017). Surface analysis 21Z Sat Jul 25 1987. Retrieved from:

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