Original: Based on reports from Hurricane Hunters, the National Hurricane Center upgraded the depression to Tropical Storm Erin at 1530 UTC on August 15 about 250 miles (400 km) east of Brownsville, Texas.
Simplified: Based on reports from Hurricane Hunters, the National Hurricane Center upgraded the depression to Tropical Storm Erin at 1530 UTC on August 13 about 250 miles (400 km) east of Brownsville, Texas.