由于条件有利，加拿大环境部为安大略省南部发布了恶劣天气观察，包括龙卷风的可能性。 Environment Canada issues severe weather watches, including tornado potential, for southern Ontario due to favorable conditions.
加拿大环境部为安大略省南部部分地区（包括布兰特县和牛津县）发布了严重的雷暴和龙卷风警报，因为风暴可能产生龙卷风的有利条件。 Environment Canada issued severe thunderstorm and tornado watches for parts of southern Ontario, including Brant and Oxford counties, due to favorable conditions for storms potentially producing tornadoes. 风暴可能带来强风、大冰雹和大雨,可能发生龙卷风,风潮高达每小时90公里,而且冰雹大小太大。 The storms could bring strong winds, large hail, and heavy rain, with possible tornadoes having wind gusts up to 90 km/h and toonie-sized hail. 气象局建议居民做好恶劣天气的准备,一旦威胁天气逼近,立即进行掩护。 The weather agency advised residents to be prepared for severe weather and take cover immediately if threatening weather approaches. 还为诺福克、哈尔迪曼德和埃尔金县发放了雷暴严重监视表。 Severe thunderstorm watches were also issued for Norfolk, Haldimand, and Elgin counties.