• Polar vortex disrupted as major sudden stratospheric warming develops over the Arctic

    ByTeo Blašković

    Multiple atmospheric diagnostics show that a major sudden stratospheric warming is underway over the Arctic, with strong planetary wave activity, rapid polar warming, and reversal of the stratospheric jet indicating a significant disruption of the polar vortex circulation. This type of stratospheric disruption can influence atmospheric circulation patterns in the coming weeks, sometimes increasing the likelihood of cold air outbreaks across parts of North America, Europe, and Asia.

  • Polar vortex split to impact Northern Hemisphere weather in March 2026

    ByRishav Kothari

    Another warming of the Arctic stratosphere is now underway, with the polar vortex forecast to undergo a final split in March 2026. The zonal mean wind reversal around 60°N and 10 hPa is expected between February 28 and March 1, with its impacts propagating into the troposphere, likely shifting weather patterns over Europe and North America.

  • Stratospheric warming developing over the Arctic forecast to weaken the polar vortex and influence February weather

    ByRishav Kothari

    Meteorological forecasts show a major sudden stratospheric warming event forming over the Arctic, likely to cause significant weakening of the polar vortex in early February 2026. The resulting atmospheric disruption may alter jet-stream dynamics and increase the risk of Arctic air intrusions into North America and northern Europe during the second half of February.