With snowpacks in the southern Canadian Rocky Mountains above to much above average normal (120%-144%), there is a rising concern for flooding as temperatures warm during the spring.
But John Pomeroy states that there isn’t a major concern for flooding – yet. The long-term forecast is still calling for a cooler spring, which means the snow in the mountains will likely melt slower this year. In addition, snowmelt alone has never driven flooding in Calgary and it would take a large rain-on-snow event to cause flooding. “With a changing climate, we can experience unprecedented weather extremes so it is important to stay vigilant, ” says John Pomeroy.