News networks stay live overnight to cover Isaac

(AP) Some television news networks are planning to stay on live overnight to follow Hurricane Isaac and its impact on the Gulf Coast.

CNN, Fox News Channel and The Weather Channel said Tuesday they will stay with storm coverage all night. CNN and Fox usually air reruns of prime-time shows in the wee hours.

MSNBC says it hasn't made a decision on staying live.

Anderson Cooper is leading CNN's coverage from New Orleans, with Shepard Smith on Fox. All the news networks have mixed news of the storm in with Republican National Convention coverage.

The convention is taking place in Tampa, Fla., after being delayed by nasty weather.

Forecasters say the slow-moving storm could dump prodigious amounts of rain on the New Orleans area.