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The Emergency Public Warning System, now the Alberta Emergency Alert, was developed after the disaster. The warning system breaks into all broadcasts on radio and television, as well as on cellular phones now. It is also used for Amber Alerts. 🧵 10/12

The photo is a simplified map of Edmonton, Alberta, and environs, depicting the path of the 1987 tornado as a thick black line traversing from southwest to northeast. The track begins near Mill Woods (labeled F2), curves through the city along the North Saskatchewan River (shown in blue), intensifies to F4 near Sherwood Park, then proceeds to F2 near the city center (point O), F2 at point C, F2/F3 at point P, and ends near Evergreen with F2/F3. Major highways like 2, 216, 16, 16A, 14, 15, 21, and 28 are marked in orange and yellow, with suburban areas shaded in beige.

jul 31, 2025, 12:01 pm • 10 0

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In 1987, there were only three Doppler radars in operation in Canada, including one near Edmonton. The disaster led to the wide adoption of Doppler radars in Canada. Learn more in my Deep Dive 👇 canadaehx.com/2023/07/25/t... 🧵 11/12

jul 31, 2025, 12:01 pm • 13 1 • view

I hope you found that look at the Edmonton Tornado interesting. If you enjoy my Canadian history content, you can support my work with a donation at 👇 www.buymeacoffee.com/craigu *sources in next post* 🧵 12/12

jul 31, 2025, 12:01 pm • 8 1 • view

Sources: Canadian Encyclopedia: buff.ly/P4f4vUu Canadian Red Cross: buff.ly/50977b3 Reader's Digest Canada: buff.ly/5HE4rLP Daily Hive Vancouver: buff.ly/IvywRic

jul 31, 2025, 12:01 pm • 7 0 • view