Nuclear power station incident in Ontario Canada
toronto.ctvnews.ca
toronto.ctvnews.ca
Adding erroneous nuclear alerts into the experience isn't going to make people feel very secure about the service or their neighbourhoods. People will just change their alert sound to silence, or something that won't wake them up even in the case of a real emergency (that boy who cried wolf you mention). Then it expensively helps no one.
Having said that, a test that could result in shutdown.... Sunday at 730AM is an okay time for capacity to go offline.