Too early to talk SSW? 😉
— Ben Noll (@BenNollWeather) July 15, 2021
For the 2nd month in a row, there is a signal for a weaker-than-normal stratospheric polar vortex in Nov-Dec.
Indicated by several models, this can increase the chance for polar air masses to seep southward during early-mid winter ❄️
Has my attention! pic.twitter.com/sqNOieqouX