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May 1 & 2 2010 Epic Flood Event for Western and Middle Tennessee
United States
The map relates to amount of rainfall that fell to the chances of that amount of rain actually occurring. Photo: NOAA
What is a 100 year flood? A 100 year flood is an event that statistically has a 1% chance of occurring in any given year. A 500 year flood has a .2% chance of occurring and a 1000 year flood has a .1% chance of occurring...Fifteen (15) observation sites had rainfall measurements exceeding the maximum observed rainfall associated with Hurricane Katrina landfall. The two day rainfall of 13.57 inches at Nashville International Airport shattered the monthly rainfall record for May which was 11.04 inches.
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