That day, an eye rapidly formed within the system and it became a tropical storm just 60 mi (95 km) southeast of Galveston, Texas.

Only two structures sustained damage in Matagorda, one being destroyed by a possible tornado, and the remaining effects resulted from flooding in Jackson and Victoria Counties.

[1] According to the Atlantic hurricane database (referred to as HURDAT), the system developed into a tropical depression by 18:00 UTC (1:00 p.m. CDT) that day, with its center located roughly 160 mi (255 km) south-southeast of the Mississippi River Delta.

During the afternoon hours, banding features consolidated around a developing eye and weather reconnaissance planes were dispatched to the system.

[3] It is estimated that the depression became a tropical storm by 12:00 UTC (7:00 a.m. CDT), roughly 60 mi (95 km) southeast of Galveston, Texas.

[2] Operationally, the system was not even monitored as a depression this time, with the classification and naming of Tropical Storm Abby occurring at 16:00 UTC (11:00 a.m. CDT) on August 7.

[1] Around 16:00 UTC (11:00 a.m. CDT) on August 7,[4] reconnaissance measured a central barometric pressure of 1000 mbar (hPa; 29.53 inHg) within Abby, the lowest in relation to the system.

[7] Weakening to a depression hours later, Abby ultimately degenerated into an area of showers and dissipated southwest of San Antonio by 12:00 UTC (7:00 a.m.

"[5][9] Gale warnings were raised from Galveston to San Antonio immediately following the storm's formation and were kept in place through the morning of August 8.

[1] Near the town, a possible tornado unroofed a barn and tossed the structure 225 ft (69 m); this building previously had withstood the effects of Hurricane Carla in 1961.