As the climate phenomenon La Niña prepares to reappear this fall, meteorologists are forecasting stormy and wet weather in some parts of Canada and mild, dry temperatures in others. increase.
While it’s unusual for La Niña to continue to be strong, Brett Anderson, senior meteorologist at AccuWeather, says there will be less room for surprises this fall season.
“This is the first time in 20 years that the La Niña has fallen three times in a row.
La Niñas, which cause cooler-than-normal sea surface temperatures, often affect jet streams across North America, resulting in strong wind patterns. Here’s how this will affect the weather across the country, according to AccuWeather.
west coast brace for storms
As with last fall, British Columbia is expected to experience wet and wet seasons, which could increase the risk of flooding.
Anderson said the scars left by wildfires in the last two summers may also increase the risk of landslides as the terrain becomes more susceptible to this extreme weather.
“There were a number of large fires in British Columbia last year, and the burns are still there, so the late fall and winter storm patterns could bring flash flooding to those areas. ” he said.
Drying temperatures useful for prairie harvest
Away from the Pacific, temperatures are expected to be milder and drier along the prairies. AccuWeather predicts warmer-than-normal temperatures, especially in Saskatchewan and Manitoba.
“The Prairie is forecasting drier and warmer-than-normal conditions this fall, especially in the central and eastern parts of the Prairie,” Anderson said.
Anderson says this is ultimately good news for these regions, with drier temperatures favoring harvest season.
Late foliage in eastern Canada
As in the Prairie, warm, dry temperatures are expected in eastern Canada during the first half of the season. Anderson said that even if it’s a little late, it can still be a great fall foliage, as long as the temperature doesn’t get too hot.
“It looks like it’s peaking late, probably about a week later than normal, but I think the color will be in pretty good shape,” he said.
However, later in the fall, La Niña is expected to bring more rain and colder weather, leading to a winter season across Ontario and Quebec.
“This[La Niña]has kept much of the Pacific air flowing across the country, keeping much of central and eastern Canada warmer than normal during the fall, while most of the cool air over northwestern Canada continues to rise. I think things will start to change towards November,” he said.
‘Higher than normal’ threat of tropical storms in oceans
In the Atlantic Ocean, warmer water temperatures could increase the risk of tropical storms.
“The hurricane season got off to a very slow start and nothing happened in August, but there are signs that things are really starting to pick up from next week and the week after that,” he said.
Tropical storms usually don’t reach the oceans, but Anderson said it’s always a possibility, especially in Newfoundland and Labrador, especially with above-normal temperatures and rainfall.
“It’s probably higher than usual in the Canadian Atlantic this fall,” Anderson said.
Fall Forecast: What to Expect in Different Regions of Canada
Source link Fall Forecast: What to Expect in Different Regions of Canada