Tropical Storm ERIN (15-18 August 2013)
Track positions and wind speeds:

INIT  15/0300Z 14.0N  23.5W   30 KT  35 MPH
INIT  15/0900Z 14.4N  25.2W   30 KT  35 MPH
INIT  15/1500Z 14.4N  26.5W   35 KT  40 MPH
INIT  15/2100Z 15.0N  27.5W   35 KT  40 MPH
INIT  16/0300Z 15.5N  29.1W   35 KT  40 MPH
INIT  16/0900Z 16.3N  30.5W   35 KT  40 MPH
INIT  16/1500Z 16.9N  32.1W   30 KT  35 MPH
INIT  16/2100Z 17.7N  33.3W   30 KT  35 MPH
INIT  17/0300Z 18.5N  34.5W   35 KT  40 MPH
INIT  17/0900Z 18.9N  35.6W   35 KT  40 MPH
INIT  17/1500Z 19.8N  35.7W   35 KT  40 MPH
INIT  17/2100Z 21.0N  37.0W   35 KT  40 MPH
INIT  18/0300Z 20.7N  37.7W   30 KT  35 MPH
INIT  18/0900Z 20.7N  38.4W   30 KT  35 MPH
INIT  18/1500Z 20.5N  39.3W   30 KT  35 MPH
INIT  18/2100Z 20.4N  39.8W   30 KT  35 MPH