It's April 25, 2011 and a powerful low pressure system is moving through the southern Plains. The Super Outbreak of 2011 - the largest, costliest, and one of the deadliest tornado outbreaks in U.S. history - is about to begin.
Tornado outbreak: One of Canada's largest now revealed
First 30°C in Canada? Who are these lucky Canadians?
5 reasons why spring's unpredictability is just the worst
Flooding spreading across the Prairies. Are you at risk?
Rainy midweek ahead of summer-like heat in southern Ontario
Major Canadian cities on track for historic April cold
Significant flooding risk in B.C.: Are you vulnerable?
Massive, damaging waterspout roars ashore in Florida
Teen group swept away in Israel flash flood; at least 9 dead
Snow creeps back into Ontario's forecast: Locations at risk
Heavy downpours heighten flood concerns in Atlantic Canada
Plane forced to make emergency landing on Calgary road
April showers bring hidden mould dangers: What to watch for
Tornado capital of the world goes quiet. Here's why.
Dust advisory issued for 5 B.C. communities, here's where
Two planes make emergency stop on Canadian highways