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Updated details on last week's historic tornado outbreak

The National Oceanic and Atmospheric Administration has issued an updated report on last week’s deadly tornado outbreak in the southern U.S.

The report includes a more detailed map of tornado paths, as well as updated storm totals.

To date, NOAA estimates the outbreak spawned 305 tornadoes, making this the largest tornado outbreak in history – surpassing the “Super Outbreak” of April 3-4, 1974, which had 148 tornadoes. As of 11 a.m. today, the National Weather Service has surveyed damage from 197 tornadoes.

Their ratings include:

EF5 – 2EF4 – 12EF3 – 21EF2 – 47EF1 – 60EF0 – 55

NOAA officials now estimate there were 305 tornadoes from April 25 to 28, which caused 318 deaths. All but nine of those deaths occurred in a 24-hour period starting at 8 a.m. April 27, making it the fifth-deadliest day for tornadoes on record.

NOAA estimates there were more than 600 tornadoes during the month of April, shattering previous records. The previous April tornado record was 267, set in 1974. The previous record number of tornadoes during any month was 542, set in May 2003.