The SOI is in an El Nino state currently, around -8 for the last 90 days. If you have a -PDO in October, with a -8 or so SOI in Sept-Nov, the composite is pretty cold for the Southwest in winter - it is also a pretty unusual situation. El Nino with a -PDO October is also rare. pic.twitter.com/1eeWfhSNEC

— RaindanceWX (@raindancewx) November 14, 2019