Global News Calgary posted this video of a storm on Tuesday, Aug. 14, in Calgary, Canada.
The reported winds sustained as high as 41 mph and gusting to as high as 60 mph north-northwest. The thunderstorm was between 2:45 and 4:00 p.m. local time at Calgary International and Calgary/Springbank Airport.
"Jay Mangat shot this amazing footage as a sign on Deerfoot approaching 32nd Ave in the NE of Calgary was being blown around. At the end of the video, one of the signs fall off due to the violent shaking."
Detroit will get a break from snow around the middle of the week, as milder air arrives for the city.
Warm air is forecast to surge into much of the eastern half of the nation by the weekend and will be accompanied by heavy rain and flooding risk in some locations.
As warmer air pays a brief visit to the Central and Eastern states, delays from rain, fog, ice and snow will be on the increase this weekend for early holiday travelers.
A parade of snowstorms has been taking aim at the U.S. recently, increasing the chances for many to see a White Christmas.
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A dramatic warmup is in store for Cleveland after days of frigid conditions in the city.
Valparaiso, IN (1981)
Heavy lake effect snowburst dumps 22" in just a 3-hour period.
New York City (1917)
Central Park: -1 degrees, earliest zero reading.
Southern Illinois (1957)
A tornado tracked across Jackson, Williamson and Franklin counties, killing 11 people.