Culture Alberta · Calgary · Aug 16
Calgary Upward Lightning: Rare Flashes Seen Over Downtown in the August 15 Storm
Videos from Calgary's August 15 thunderstorm appear to show upward lightning rising from tall structures downtown, several almost at once. Environment Canada had a severe thunderstorm warning up from 8:52 to 9:32 p.m. Here's what the phenomenon is and how to tell it apart from an ordinary strike.
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