Get ready for that annoying tone to go off on your TV, your radio and that phone in your pocket. The semi-annual test of the emergency alert system will sound the claxon across Ontario on Wednesday, May 10th at 12:55 PM. It's part of a requirement to make sure everything is working in advance of the real thing. 

The next one won't happen until the fall: Nov. 15th, also a Wednesday.

If you're reading this from another province, you can find the full list of when it will hit your media at the link below. 

Test of Canada’s public alerting system, Alert Ready, coming May 10th