http://www.cnn.com/2011/US/04/30/severe.weather.context/index.html?hpt=P1&iref=NS1(CNN) -- With the official state death toll now at 340, the April 27-28 tornado outbreak is the second-deadliest single day for tornadoes since record keeping began, the National Oceanic and Atmospheric Administration said.
The outbreak is also on record as experiencing the most number of tornadoes in a single day.
The agency used its records and historical research -- the latter dating back to 1680, it said.
According to the federal agency:
FATALITIES
-- The deadliest single day for tornadoes was on March 18, 1925, with 747 fatalities across seven states.
-- As of early Saturday morning, the April 27-28, 2011, outbreak has seen 340 fatalities across six states.
-- The third deadliest tornado outbreak was on March 21, 1932, when 332 people died.
SEVERITY
-- The agency estimates that on April 27-28,2011, there were 211 tornadoes.
-- The largest previous number of tornadoes on record in one event took place from April 3-4, 1974, with 148 tornadoes.
More information at:
http://www.noaanews.noaa.gov/april_2011_tornado_information.html