Reports from an Air Force Reserve Hurricane Hunter aircraft indicate that Erin has become a Category 4 hurricane on the Saffir-Simpson Hurricane Wind Scale with maximum sustained winds near 140 mph The minimum pressure has fallen to near 937 mb. The next intermediate advisory will be issued at 2AM.

As of Saturday morning, Air Force Reserve Hurricane Hunter aircraft indicated that Erin has become a Category 5 hurricane.

Erin is the first hurricane to develop over the Atlantic this year, and meteorologists are closely tracking its path and forecast.