The tornado warning for the London area and parts of southern Ontario has been lifted as a strong thunderstorm moved through the region on Tuesday evening.
“We’ve had rounds of severe weather moving through southern Ontario throughout the day and into the evening,” said CTV London Meteorologist Julie Atchison. “As we go into the overnight hours, calmer conditions are expected, but this line of storms ahead of a cold front is really intense.”
051926_london fire storm damage London Hydro crews alongside London Fire Department clean up damage from a storm, May 19, 2026 (Source: London Hydro)
Tornado warning – London – May 2026 A severe thunderstorm approaches the London newsroom on May 19, 2026. (Ashley Hyshka/ London)
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Tornado warnings
As of 7:40 p. m., all tornado warnings have been canceled for London and other areas in southern Ontario. “There have been reports of funnel clouds, rotation, and some damage in and around the region. So we’ll be monitoring that tonight and over the next few days,” Atchison stated. Tornado warning – London – May 2026 A tower cam depicts a storm approaching the tower cam on May 19, 2026. According to Environment Canada, there may have been two tornadoes in Western Middlesex County. The warnings shifted east of Middlesex County early in the evening, with new warnings issued for Oxford, Norfolk, and Brant counties. Possible hazards included tornadoes, damaging winds between 110 – 130 km/h, and hail up to quarter size. Reports indicate power outages in south London due to downed trees.051926_london fire storm damage London Hydro crews alongside London Fire Department clean up damage from a storm, May 19, 2026 (Source: London Hydro)
Thunderstorms Before Midweek Cool Down
A heat warning is still active; however, according to London Meteorologist Julie Atchison, the powerful thunderstorms on Tuesday evening will bring in a cold front. “That’s all coming to an end with the arrival of a cold front that will move into the area tonight,” Atchison explained. “Ahead of that front, scattered showers and thunderstorms are developing.” Showers should wrap up around midnight with about a 40 percent chance of rain. The risk for thunderstorms won’t be over yet; there’s still potential after midnight with gusts reaching up to 40 km/h. The overnight low will fall to about 7 C. Atchison mentions that Wednesday’s weather is set for a big change with daytime highs only hitting around 11 C and mixed sun and clouds. It’ll get chilly on Wednesday night as temperatures drop down to about 2 C.Tornado warning – London – May 2026 A severe thunderstorm approaches the London newsroom on May 19, 2026. (Ashley Hyshka/ London)
Here’s a Look at London’s Long-Range Forecast
Tuesday night: Showers ending after midnight then cloudy with a 40 percent chance of more showers. Risk of thunderstorms this evening and after midnight. Winds from southwest at 40 km/h gusting to 70 changing to west at 20 gusting to 50 early this evening. Low around 7. Wednesday: A mix of sun and cloud expected. Winds from northwest at 30 km/h gusting to 50. High near 11. UV index at level nine or very high. Thursday: Sunny skies predicted with a high near 19. Friday: Cloudy conditions expected with temperatures reaching about high at around18.Saturday: Cloudy with a chance for showers at seventy percent likelihood. Windy conditions anticipated. High temperature approximately fifteen.
Sunday : Cloudy , chance for showers forty percent likelihood. High reaching nineteen degrees.
Monday : Sun mixed in cloud cover , high temperature twenty-three degrees.
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