The 12Z GFS is now predicting a major sudden stratospheric warming - a reversal of the zonal-mean zonal winds at 10 hPa and 60°N - to occur on January 3rd, 2021! #SSW pic.twitter.com/zSriAstvNR— Dr Simon Lee (@SimonLeeWx) December 19, 2020
The 12Z GFS is now predicting a major sudden stratospheric warming - a reversal of the zonal-mean zonal winds at 10 hPa and 60°N - to occur on January 3rd, 2021! #SSW pic.twitter.com/zSriAstvNR