The first and only tropical storm of the season originated in a westward-moving tropical wave denoted on weather maps from September 13. Decreases in air pressure occurred throughout the Bahamas, providing "strong indications of a disturbance". The system became a tropical depression at 00:00 UTC on September 15, approximately east of Miami, Florida. It strengthened into a tropical storm about 12 hours later, leading to the issuance of storm warnings from the east coast of Florida to as far north as Hatteras, North Carolina.