sentences:  This policy would come under-fire in the years to come especially after the Tri-State Tornado in 1925 that stands today as the deadliest tornado in American history.Weather forecasters and the public alike in the Chicago, Dayton, Fort Wayne, Lansing, South Bend, and Toledo areas were unaware that the stage was set that day for a significant tornado outbreak that would follow a balmy and seemingly tranquil Palm Sunday afternoon.The weather maps in use in March 1920 showed a rather large and deep cyclone over northern Iowa that was forecast to move across central Lower Michigan by nightfall with a trailing cold front.