4 p.m. - Last update, Isaac now a depression

A sherriff's vehicle sits in flood waters caused by Isaac, Thursday, Aug. 30, 2012, north of LaPlace, La, off Lake Pontchartrain. Isaac's maximum sustained winds had decreased to 45 mph and the National Hurricane Center said it was expected to become a tropical depression by Thursday night. The storm's center was on track to cross Arkansas on Friday and southern Missouri on Friday night, spreading rain as it goes. (AP Photo/Eric Gay)

The last report on now depression Isaac was issued at 4 p.m. The center of Isaac was located near Latitude 32.7 north, Longitude 92.6 west and is about 40 miles south-southeast of El Dorado, Ark. The maximum sustained winds have dropped to 35 mph as moves north-northwest at 12 mph. This is the last public advisory by the National Hurricane Center on this system.