NEW ORLEANS (AP) — Evacuation has begun on Louisiana’s only inhabited barrier island as Tropical Storm Isaac’s path moves west, and was ordered Monday for about 2,000 Plaquemines Parish residents.

Gov. Bobby Jindal called a state of emergency, suggesting people leave low-lying parts of 15 coastal parishes where the National Weather Service called a hurricane warning. He says that if Isaac remains a threat to Louisiana, he may skip the Republican National Convention.

Grand Isle police say Mayor David Camardelle ordered evacuation Sunday for tourists, recreational vehicles and camper trailers, and Monday for residents.

Parish President Billy Nungesser says the 2,000 residents of Plaquemines Parish’s east bank must leave home starting at noon Monday, with a voluntary evacuation for another 5,000 people who in the southern part of the parish from Ironton to Venice.