It came a day earlier, but yesterday's sirens in Fort Frances were nothing more than a test.
Fort Frances Fire and Rescue Service says they were sounded to test the system as they were working on some alarms that were not functioning properly.
The monthly test, which is done the first Wednesday of the month, will go ahead as planned today.
Officials advise that if the sirens do go off, turn to 93.1 The Border for an update instead of calling the fire department or turning to social media sites for information.