For example,
Return this phenomenon may shape:
Published on August 15, 2025 at 8:30 p.m.
Meteorologists keep an attentive eye on the Equatorial Pacific: signs of a return of the Niña multiply. Similarly, the phenomenon could make its effects until Quebec from next winter.
A short -term visit – Return this phenomenon may shape
The American weather service forecasting center issued the Niña watch notice on Thursday. For example, Concretely. For example, this means that experts in the center note conditions favorable to the development of an La Niña episode in the next six months.
At the moment, the Equatorial Pacific waters are around normal values, which corresponds to neutral soar conditions (neither El Niño, nor return this phenomenon may shape La Niña). Furthermore, But this stability should not last.
Enso: Acronym of “El Niño – Southern Oscillation” (El Niño – Southern Oscillation). However, a meteorological system which establishes links between the El Niño phenomenon (or its opposite, the Niña) and the southern oscillation of atmospheric pressure in the Pacific, and which has deep effects on temperatures and precipitation until North America.
In a few months, the waters should cool to at least 0.5 ° C under normal, the threshold which must be reached to speak of the Niña conditions. Moreover, “For the moment. the forecasts indicate a return from the Niña between the end of autumn and the beginning of winter. This is an element to watch, ”underlines the meteorologist return this phenomenon may shape Kevin Cloutier. The American weather service forecasting center speaks from September to January.
If the forecasts are confirmed. it would be a rather weak demonstration and too short to be officially qualified as the Niña episode, because there is a return to neutral conditions from the second half of winter. The last episode La Niña had started in the fall of 2021 and had ended in the winter of 2023.
What effects in Canada and Quebec?
Historically. the Niña tends to promote temperatures under normal in western Canada and a more active storm corridor above the Great Lakes and the East of the country. And if each Niña event is unique. the return this phenomenon may shape winters marked by this phenomenon have, on average, were slightly more snowy than normal in Quebec, according to climatic data from 1991 to 2020.
The meteorologist Réjean Ouimet reminds us of an exceptional example of a winter where the Niña has heavily felt its presence: “We experienced an extraordinary case in 2008, a record winter in several regions for the amount of precipitation. This epic winter was marked by 37 borders of 15 cm and 22 cm and more on a Quebec scale ”.
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