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Simon Lee
simonleewx.com
did:plc:zgllhv7tg4n2crgnibxrnz3t
By the finest of margins, ERA5 shows a reversal of the daily-mean 10 hPa 60°N zonal-mean zonal winds on 28 November to –0.13 m/s.
That nominally ties with 28 Nov 1968 as the earliest major sudden stratospheric warming on record in ERA5 post-1958 (when stratospheric observations increased).
2025-12-08T20:13:00.430Z