Entergy says Hurricane Isaac has knocked out power to more than 450,000 residential and commercial in southeast Louisiana.
The company's website indicates that those included more than 150,000 in New Orleans, about 160,000 in Jefferson Parish, some 15,700 in St. Bernard, about 10,800 in Plaquemines, 27,300 in Lafourche, 16,000 in St. Charles, 16,700 in St. John the Baptist and 17,700 in Terrebonne Parish.
Officials say crews are not able to start repairs until winds drop below 30 or 35 mph, which is likely to be Thursday at the earliest.
Utility crews are surveying the power lines and thousands of utility workers from other states are on standby, as Louisiana power companies readied for Tropical Storm Isaac.
Fresh in minds around the state's capital city was Hurricane Gustav, which struck as a Category 2 storm in 2008 — and surprised Baton Rouge with power outages that lasted 10 days or more in many areas.
Public Service Commissioner Jimmy Field, who represents the Baton Rouge area, says he's confident power companies are ready for Isaac, expected to strike as a hurricane.