Tornado emergency in Moore, Okla.

A large, violent tornado carved a long, destructive path on the south side of Oklahoma City. Doppler radar estimates suggested that twister had the potential to produce wind gusts of 200 mph, the equivalent of an EF-4 on the Enhanced Fujita Scale. The storm reportedly killed at least 51 people and caused extensive damage in Moore, Oklahoma, which is just south of Oklahoma City. In May, 1999 a massive tornado destroyed large parts of this town, killing 41 people.

Read below for the news as it developed Monday.

[liveblog]

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PM Update: Continued warm and a bit humid, outside thundershower chance