In the 5 p.m. ET advisory, the Hurricane Center said Isaac remains a tropical storm with maximum sustained winds of 70 mph. Dry air, the center explains, keeps feeding into the storm keeping it from intensifying. The storm is predicted to make landfall near New Orleans as a category 2 hurricane with 100 mph winds.
Isaac is headed toward the Gulf Coast, and Louisiana's governor has declared a state of emergency. The storm is threatening to hit New Orleans as the anniversary of Hurricane Katrina approaches. Host Michel Martin speaks with Lt. Col. Jerry Sneed of Homeland Security in New Orleans, about how they're preparing the city for the storm.
The St. Mary Parish Sheriff's Office says the state transportation department has barricaded some intersections along Highway 90 to let traffic flow more smoothly through the parish.
Sheriff's office spokeswoman Traci Landry says the traffic is probably people evacuating from parishes east of St. Mary Parish as Tropical Storm Isaac gets closer. The storm is expected to become a hurricane before making landfall Tuesday.