A New Polar Vortex Is Emerging Over the North Pole, With a Winter 2026/2027 Disruption Risk
This story deserves to be shared
Send it to someone who'd care, or post it on your networks.
A new Polar Vortex is now forming over the North Pole, with rapid stratospheric cooling and a pressure drop already visible in the latest data. It is starting the season stronger than last year, but the long-range forecasts show a very different signal for Winter 2026/2027. New seasonal trends agree on a notable slowdown of the Polar Vortex around mid-winter, with weakening winds and rising pressure in the stratosphere. A strong Super El Niño is also developing in the Pacific, adding another factor affecting the Polar Vortex winter development. In this article, I will look at the new Polar Vortex development from Fall to Winter 2026/2027, the Super El Niño connection, and what a major disruption or a Polar Vortex collapse would bring for winter weather across the United States, Canada, and Europe.
To keep it simple, the Polar Vortex is the broad winter circulation over the Northern (and Southern) Hemispheres. You can imagine the Polar Vortex as a spinning wall over the polar regions, rising from the surface into the stratosphere (over 50 km/ 30 miles high), keeping the cold polar air inside.
This article is an excerpt. To read the full content, visit the original source. Severe Weather Europe
Related articles
Where’s the frost? Southern U.S. hits freezing before Toronto, Montreal
Toronto and Montreal have remained above the freezing mark every day for almost six months. While frosts and even some snowflakes have intruded across parts of Ontario and Quebec in recent weeks, the two cities have yet to reach that magic number. What’s even more remarkable is that a handful of communities across the southern United States have already dipped to the freezing point--and some have even seen accumulating snowfall. DON’T MISS: Official: Canada records first -30°C reading of the seasonThe last time we saw a freezing temperature in either Toronto or Montreal was the second-to-last week of April. Toronto hit -1.3°C early on April 20, while Montreal dipped to -2.0°C the following morning. Our average first frost in both cities occurs right around the middle of October. But warmer-than-normal years can see this milestone slide several weeks past due. Montreal once had to wait 207 consecutive days for its first frost, with the city’s first subfreezing temperature in 2017 waiting until Nov. 7. The latest Toronto’s had to wait to hit the zero-degree mark was Nov. 13, 2022.
0 comments
No comments yet. Be the first to share your thoughts!