# Polar Vortex Reversal: Stratospheric Impact Wave Could Arrive by Thanksgiving

Source: [Severe Weather Europe](https://www.severe-weather.eu/global-weather/polar-vortex-stratospheric-warming-impact-wave-thanksgiving-2026-united-states-canada-europe-fa/) · 2026-11-13 · Earth & Climate
Page: https://themorning.science/story/polar-vortex-reversal-stratospheric-impact-wave-could-arrive-by-thanksgiving-47ccb02be23f34cb
Kind: other · Impact: medium

## In brief

- The earliest Sudden Stratospheric Warming on record has been confirmed.
- Winds around the stratospheric polar vortex reversed on November 10.
- An associated impact wave could arrive in the United States, Canada and Europe by Thanksgiving, according to Severe Weather Europe.

## Why it matters

Sudden stratospheric warmings can change the polar vortex and are linked to later surface weather, so an unusually early event is relevant to forecasters and anyone tracking winter weather.

## Timeline

- 2026-11-10: Winds around the stratospheric polar vortex reversed
- 2026-11-13: Earliest sudden stratospheric warming on record reported as confirmed

## Coverage

- [Polar Vortex Reversal: Stratospheric Impact Wave Could Arrive by Thanksgiving](https://www.severe-weather.eu/global-weather/polar-vortex-stratospheric-warming-impact-wave-thanksgiving-2026-united-states-canada-europe-fa/) — Severe Weather Europe, 2026-11-13

Tags: sudden stratospheric warming, polar vortex, weather, atmospheric science

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