Sunset House, AB F1 Tornado of June 18, 1986

Slave Lake

Figure 1 depicts the surface observations at 12:00 pm MDT. There were four tornadoes on this day, the others being:

Figure 1. Surface analysis at 18Z on June 18, 1986 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 4:30 pm MDT near Sunset House, AB. The path and width of the tornado was not documented by ECCC.


NWS Weather Prediction Center Surface Analysis Archive. (2017). Surface analysis 18Z Wed Jun 18 1986. Retrieved from:

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