Comments | Calgary AB, July 4, 1998. Two separate hailstorms occurred on July 4-5 and July 8. On July 4, 43.2 mm of rain also fell on Calgary. The July 8 storm included winds up to 100 km/h, which tore apart greenhouse roofs. Hailstones ranging from pea to baseball size caused waist high flooding which forced many people to abandon their cars at intersections. Snowplows were brought out to clear the roads. Roads were destroyed by the hail, a warehouse collapsed and a store had to be closed because of a burst storm sewer. Mudslides forced boulders and mud across roads and railroads.
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