The National Hurricane Center began monitoring a tropical wave which moved off the coast of Africa on August 13. Within 12 hours, the wave acquired a low pressure center and began to organize. The system was designated Tropical Depression Five at 0300 UTC on August 15, and tropical storm warnings were issued for the southern Cape Verde Islands. The storm proceeded on a west-northwest track away from the Cape Verde Islands and out to sea. The system was upgraded to Tropical Storm Erin at 1200 UTC on August 15. Early on August 16 (UTC), convection in the system began to wane. Later that day, Erin weakened to a tropical depression, but restrengthened to a Tropical Storm to the next day on August 17. Twenty-four hours later, the system weakened once again to a tropical depression, and eventually degenerated into a remnant low on August 18.
A single hurricane stirs up millions of miles of air and can dump more than 2.4 trillion gallons (9 trillion liters) of rain a day.