Weather Advisory Bulletin for Ontario

Notice to all Members:

April 29, 2025:

Environment and Climate Change Canada (ECCC) has issued the following weather advisory.

There is increasing concern in severe thunderstorm development with the main threats being strong wind gusts and large hail today, 2025-04-29. There is also a risk of tornadoes with these storms.

There is still uncertainty with the exact timing and location of these storms, which affects what hazard is the most likely. The stronger storms are likelier away from the shores of the Great Lakes, where air is warmer.

Please see the items below for more information.

Jason Tremblay, VE3JXT
Community Services Officer,
Radio Amateurs of Canada

Links: