Palm Sunday

Today, Palm Sunday 2014, will hopefully not experience the same kind of weather that they had on Palm Sunday in 1920 (March 28th) or 1965 (April 11th-12th).

The outbreak on April 11th and 12th, 1965 was the second deadliest outbreak up to that time, with 271 people killed in the Midwestern states of Iowa, Illinois,Indiana, Michigan, Ohio, and Wisconsin.
You can read more about it here, here, and here.