I thought this would be of extra interest for especially the SE US major CAD regions due to the current ENSO being neutral negative (NN). I counted a total of 36 Atlanta major ZR and/or IP on record. It is very impressive that half of these (18) were during NN ENSO, alone, when one considers that NN have occurred only about 1 every 5 years. I counted 28 NN’s. Of these 28, 16 (57%) had at least one major ZR and/or IP. In contrast regarding the other 109 winters, only 15 (14%) had at least one major ZR and/or IP. So, the % of NN winters with a major ZR and/or IP at Atlanta is a whopping four times as high as those for non-NN winters!
Dates of 18 ATL major ZR and/or IP during NN ENSO: