Isaac Loses Strength, Downgraded to Tropical Storm
Isaac has top sustained winds of 70 mph, just below the hurricane threshold of 74 mph. The storm is about 50 miles west-southwest of New Orleans, where it is bringing drenching rains and fierce winds.
City officials are imposing a dusk-to-dawn curfew in New Orleans beginning Wednesday because of the downed power lines and generally unsafe conditions.
Forecasters are warning there are still life-threatening hazards from the storm surge and inland flooding.