March 18th will go down in history for the Tri-State Tornado of 18 March1925. This site will take you to a neat GIS Story map. This is the best source of information out there. A map from Wikipedia:
For more info see 1925 Tri-State tornado - Wikipedia
and 100 years ago this week, nearly 700 people were killed in the deadliest U.S. tornado | PBS News
I recently read this book if paper is more to your liking.
Finally, I worked with a student on Storm Chasing and you can read the paper here or here.




