~26C of warming so far in the stratosphere above the N Pole, at the 10hpa level, last couple of days, with more likely

The warming extending down to the 30hpa pressure level

Data from GEOS also suggesting the 60N zonal mean zonal wind at 10hpa is now ~55mph weaker than on 22nd https://t.co/z1LvNQvNLz pic.twitter.com/TUBbDSmEhq

— Marco Petagna (@Petagna) January 26, 2023