Debby made landfall on Saint Lucia early on September 10, producing heavy rainfall and tropical storm-force wind gusts.

While Debby was crossing Saint Lucia, its strongest thunderstorms were located north and east of the center due to wind shear.

By September 6, satellite images indicated a vigorous tropical wave with intense convection about midway between Africa and the Lesser Antilles.

[2] Early on September 10, satellite imagery indicated a surface circulation just north of Barbados,[1] around which time the National Hurricane Center (NHC) initiated advisories.

[2] The increasing organization of the tropical depression prompted a reconnaissance aircraft investigation, which reported flight-level winds of around 70 mph (110 km/h) in an intense rainband northeast of the center.

[3] Although Debby was not very well-organized on satellite imagery, stations on Martinique and nearby ships reported that the storm intensified further in the eastern Caribbean Sea to a peak strength of 70 mph (110 km/h) at 0600 UTC.

[1] A reconnaissance flight on September 12 did not observe a closed circulation; as a result, it is estimated that Debby dissipated at around 0600 UTC that day to the south of Puerto Rico.

[10] After the storm, Windward Islands Crop Insurance (WINCROP) paid 2189 claims in the country, amounting to EC$1.6 million ($660,000 1994 USD).

[11] Tropical Storm Debby struck Saint Lucia, and wind gusts on the island reached 46 mph (74 km/h) in Vigie.

Debby produced heavy rainfall and thunderstorms over a six-hour period, which caused flooding along rivers and in low-lying areas.

Heavy rains covered Hewanorra International Airport with 2 in (51 mm) of silt, and in Anse La Raye, floods reached waist-deep levels.

[13] In the capital city of Castries, the storm damaged a ward of an evacuated hospital; it had been scheduled for reconstruction, and the effects from Debby provided a new assessment for the rebuilding.

[16] As Debby moved into the Caribbean Sea, a tropical storm warning was issued for Puerto Rico and the United States Virgin Islands.

[6] After Debby dissipated, its remnants maintained strong winds, and a station in the Dominican Republic reported a gust of 62 mph (100 km/h) on September 11.