Wow those tornadoes sound scary. Even though I near Boston, and we get few tornadoes, my grandfather happened get caught in one many years ago. It was called the Worcester Tornado of 1953 and it was considered the 20th most deadly tornado in U.S. history.
He was and actually still is a mason and got caught in the tornado while out at one of his jobs. Luckily he survived, and it is quite an amazing story of how he did.
A low pressure system, responsible for producing severe thunderstorms in Michigan and Ohio the previous day, brought severe weather to New Hampshire and central Massachusetts. The tornado, up to a mile in width at times, tracked 46 miles through Worcester County. It mangled steel towers built to withstand winds of 375 mph. Debris from the tornado fell in the Boston area, and adjacent Atlantic Ocean.
If anyone is interested the link below has slides from the aftermath of this tornado.
http://www.ci.worcester.ma.us/cco/tornado/slideshow.htm