tropics

Atmospheric rivers becoming so intense we need to rank them like hurricanes

Atmospheric rivers becoming so intense we need to rank them like hurricanes

Atmospheric rivers have been making headlines over the past couple of years. At their worst, they have been the cause of major flooding in California as well as devastating flooding in B.C.’s interior in 2021 — along with even more flooding in the province this past winter. And many experts have noted that global climate change caused by burning fossil fuels is making these events worse.

Storm hitting Atlantic Canada 'very similar' to what struck B.C.: meteorologist

Storm hitting Atlantic Canada 'very similar' to what struck B.C.: meteorologist

“It's a very similar storm,” Bob Robichaud, a senior Environment Canada meteorologist based in Nova Scotia, told CTVNews.ca in a phone interview. “It's the same type of atmospheric setup that would generate this type of rainfall.” He explained that this type of extreme rainfall event, like the one in B.C., occurs when a “very concentrated plume of moisture in the atmosphere that streams up from the tropics” becomes part of a storm.