ECMWF Operational Model - Dates of SSW Wind Reversal (10mb 60N)

Model Run: Date of SSW
12/18 12z: 12/28
12/19 12z: 12/28
12/20 12z : 12/30
12/21 12z: 12/30 pic.twitter.com/BQV0ZbHF9b

— griteater (@griteater) December 22, 2018