01:38 - Source: CNN
Why aren't earthquake warnings better?
(CNN) —  

An earthquake with a preliminary magnitude of 5.9 struck northern Colombia on Tuesday night, the US Geological Survey said.

The quake struck about 83 miles (133 kilometers) north-northwest of Medellin.

The USGS said the temblor was about 24 miles (39 kilometers) from Mutata, a town of about 4,800 people

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