yes am familiar,iar with this info, have been around a while and have partly read the famous northeast snowstorm book by the 2 big weather experts, Paul kocin and the other phd in meteorology, plus have lived thru some biggies like blizzard of 66, 79,88, and some big misses like 66 was supposed to be but wasn't. etc. Thanks for your effort. I was fortunate to sit beside mr kocin at one of the amax meetings at BWI several years ago, and talked to ustedtobe at same conference. His education in physics was very remarkable.