Key facts
- Isaias has strengthened into a hurricane, according to the US National Hurricane Center.
- The storm was located about 460 miles south-southwest of the Mississippi River's mouth.
- Isaias had maximum sustained winds of 75 mph (120 Km/h).
The US National Hurricane Center announced on Wednesday that Tropical Storm Isaias has strengthened into a hurricane. As of the latest advisory, Isaias was situated approximately 460 miles (745 Km) south-southwest of the mouth of the Mississippi River. The storm's maximum sustained winds had increased to 75 mph (120 Km/h).