one Winter where La Nina produce a very Cold and Snowy Winter here in the Ohio Valley, and that occured in 1917 - 18. It's the weak El Nino years that caused the Snowy Winter's 1969 - 70 and 1976 to 1978. I experence these Winters, and they were very exciting for all those who like Snow. My question is : Will this scenario ever occur again ? My last Snowstorm was in Evansville, Indiana December 23rd, 2004. What a very beautiful " White Christmas." Two feet of Snow on Christmas Morning. Where I live now, ( Central Kentucky ) in the past 16 years hardly any Snowstorms. I believe Man Made Global Warming has caused this area to be subject to Drought during the growing season and beginning to be Snow free whether were in a La Nina or an El Nino phase.