Marwayne, AB F0 Tornado of July 22, 1989

Figure 1 depicts the surface observations at 3:00 am MDT.

**Figure 1.** Surface analysis at 09Z on July 22, 1989 showing mean sea-level pressure (MSLP) contours, surface observations, fronts and pressure centres (WPC, 2017)

According to Environment and Climate Change Canada (2018), an F0 tornado touched down at 2:00 am MDT 16 km north of Marwayne, AB. The path and width of the tornado was not documented by ECCC.

Sources

NWS Weather Prediction Center Surface Analysis Archive. (2017). Surface analysis 09Z Sat Jul 22 1989. Retrieved from: https://www.wpc.ncep.noaa.gov/archives/web_pages/sfc/sfc_archive.php

Environment and Climate Change Canada Data. (2018). Canadian National Tornado Database: Verified Events (1980-2009) – Public. Retrieved from: http://donnees.ec.gc.ca/data/weather/products/canadian-national-tornado-database-verified-events-1980-2009-public/

Sources

Through the Eyes of Our Chasers