Just for some 2018 perspective.

Stratospheric winds reversed to easterly for 2 weeks. The vortex split in half with easterlies at -20m/s at it’s peak.

This up-coming SSW looks to peak around -10m/s, the vortex seems unlikely to split & initially easterlies look to last 3-4 days pic.twitter.com/BKQxAXZaDi

— Met4Cast. (@Met4CastUK) February 12, 2023