50th Anniversary: Palm Sunday Tornadoes
What makes Palm Sunday stand-out is we've never seen anything close to it before or after in Michiana.
The most frequent severe weather in Michiana is a squall line. A fast moving line of severe thunderstorms with gusty straight line wind, that sometimes spawns weak, short-lived tornadoes. Like last July first.
Palm Sunday saw long lasting super cells, storms more typical to Oklahoma, the type that went through Moore. As we saw Thursday in Illinois, they can also happen in the Midwest.
Since 1950, there have only been been 12, F-3 or F-4* tornadoes, five of those 12 happened on Palm Sunday 1965. F-3 and F-4 tornadoes have estimated wind speeds nearing or exceeding 200 mph.
Strong tornadoes are pretty rare, strong tornadoes that stay on the ground for 20 miles or more are even rarer. All five tornadoes had tracks of 20 miles or more. The longest being almost 40 miles.
The palm Sunday tornadoes prompted major advances in giving the first warning of severe weather, including; issuing watches and warnings , using TV and radio and building a wider radar network.
We remember Palm Sunday 1965 for many reasons including those that lost their lives locally, and we work hard so that when severe weather strikes you'll be prepared and safe.
The National Weather Service of Northern Indiana will live tweet the events that unfolded 50 years ago Saturday afternoon, you can join in with the #PlamSunday50.
* The "F" Fujita Scale for rating Tornadoes was replaced with the "EF" Enhanced Fujita, but for this explanation purpose, we're talking about the same thing.