debut: 2/16/17
38,480 runs
At long last, La Niña arrived to start the new year
La Niña is officially—and finally—here.
Months of waiting have come to an end as ocean temperatures in the Pacific have now met the criteria necessary to declare an official start to La Niña.
Here’s what this pattern could mean for weeks and months ahead.However, the pattern arrived on its own schedule. Even though atmospheric conditions responded to the change in ocean temperatures as if La Niña arrived in stealth mode last month.While water temperatures in the Pacific aren’t the only factor influencing our winter weather patterns, overall conditions this season should closely track with what you’d expect to see during a La Niña winter.
There is a 60 percent chance that a weak La Niña will stick around through the end of winter, with about the same odds that we’ll revert back to ENSO-Neutral conditions in time for the spring.La Niña occurs when water temperatures around the equator in the eastern Pacific Ocean come in around 0.5°C colder than normal for several consecutive months.Forecasters expect overall wintertime temperatures to come in above-seasonal across most of Eastern Canada, while generally below-seasonal temperatures are expected for much of Western Canada.
Meanwhile, an active storm track will likely bring above-normal precipitation to much of Ontario and western Quebec as a steady stream of low-pressure systems move across the Great Lakes region.
Enviroment Canada
La Niña is officially—and finally—here.
Months of waiting have come to an end as ocean temperatures in the Pacific have now met the criteria necessary to declare an official start to La Niña.
Here’s what this pattern could mean for weeks and months ahead.However, the pattern arrived on its own schedule. Even though atmospheric conditions responded to the change in ocean temperatures as if La Niña arrived in stealth mode last month.While water temperatures in the Pacific aren’t the only factor influencing our winter weather patterns, overall conditions this season should closely track with what you’d expect to see during a La Niña winter.
There is a 60 percent chance that a weak La Niña will stick around through the end of winter, with about the same odds that we’ll revert back to ENSO-Neutral conditions in time for the spring.La Niña occurs when water temperatures around the equator in the eastern Pacific Ocean come in around 0.5°C colder than normal for several consecutive months.Forecasters expect overall wintertime temperatures to come in above-seasonal across most of Eastern Canada, while generally below-seasonal temperatures are expected for much of Western Canada.
Meanwhile, an active storm track will likely bring above-normal precipitation to much of Ontario and western Quebec as a steady stream of low-pressure systems move across the Great Lakes region.
Enviroment Canada
