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ATLANTA, Georgia (CNN) -- A strong, 6.0 earthquake in the Gulf of Mexico was felt throughout the Southeast on Sunday but caused no apparent damage, according to the U.S. Geological Survey.
The quake was not powerful enough to trigger a tsunami warning.
The quake, about 250 miles west of Tampa, Florida, was "pretty unusual" for the area, although a 5.2 magnitude quake was recorded nearby in February, said USGS seismic analyst Jessica Sigala.
People as far away as Atlanta -- about 530 miles from the quake's center -- called into local television stations to report feeling tremors at 10:56 a.m. ET. (Watch Floridians talk about feeling the tremor -- 1:39)
Sigala said that since the surrounding terrain is fairly flat, the earthquake would travel far and fast. The earthquake occurred at a depth of 6.2 miles, the USGS said.
About an hour after the earthquake, 904 people from 365 separate ZIP codes in the Southeast had filed online reports to the USGS that they had felt the quake.
Florida and Georgia led the list with hundreds of reports each, while a handful of reports also came from Alabama, Mississippi and Louisiana residents.
The most distant reports came from Rosman, North Carolina, and Pickens, South Carolina, both about 600 miles from the quake's center.
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