The origins of Cindy can be traced to a low-pressure area which formed within a trough positioned approximately 200 mi (320 km) east-northeast of Brownsville, Texas on 16 September, though inclement weather had been reported in the Gulf of Mexico the previous two days.
The disturbance soon strengthened into a tropical storm, developing a well-defined circulation near 1800 UTC.
By the afternoon, it had become well-organized enough to prompt the New Orleans Weather Bureau office to initiate advisories on the storm, christening it Cindy.
A distinct eye was noted on radar around 2000 UTC, and around then a maritime report issued by the SS Sabine documented winds of hurricane intensity, which was the forecasters' basis for operationally upgrading the storm to a hurricane.
While operationally classified as a Category 1 hurricane with maximum sustained winds of 80 mph (130 km/h), a reanalysis of the storm in November 2019 as part of the ongoing Atlantic hurricane reanalysis project determined that Cindy never reached hurricane intensity, instead peaking as a tropical storm with maximum sustained winds of 65 mph (100 km/h).

Despite its favorable environment, Cindy remained disorganized, featuring an asymmetric 20 mi (32 km)-wide eye; little further strengthening occurred over the course of the night.
Upon Cindy's landfall at High Island the following morning, its atmospheric pressure was measured at 996 mbar (hPa; 29.41 inHg), and winds reached 75 mph (120 km/h).
Soon after moving ashore, Cindy became nearly stationary for 18 hours, maintaining tropical storm status before weakening to a tropical depression at 1200 UTC on 18 September.
The remnants of Cindy gradually turned westward-to-southwestward and decreased in strength during 18 and 19 September.
As a result of its abnormally slow movement and deterioration, extremely heavy rains were recorded over Texas and Louisiana, especially in the storm's northeastern quadrant.
Cindy finally dissipated on 20 September while situated west of Corpus Christi.
The origins of Cindy can be traced to a low-pressure area which formed within a trough positioned approximately 200 mi (320 km) east-northeast of Brownsville, Texas on 16 September, though inclement weather had been reported in the Gulf of Mexico the previous two days. The disturbance soon strengthened into a tropical storm, developing a well-defined circulation near 1800 UTC. By the afternoon, it had become well-organized enough to prompt the New Orleans Weather Bureau office to initiate advisories on the storm, christening it Cindy. A distinct eye was noted on radar around 2000 UTC, and around then a maritime report issued by the SS Sabine documented winds of hurricane intensity, which was the forecasters' basis for operationally upgrading the storm to a hurricane. While operationally classified as a Category 1 hurricane with maximum sustained winds of 80 mph (130 km/h), a reanalysis of the storm in November 2019 as part of the ongoing Atlantic hurricane reanalysis project determined that Cindy never reached hurricane intensity, instead peaking as a tropical storm with maximum sustained winds of 65 mph (100 km/h).
Despite its favorable environment, Cindy remained disorganized, featuring an asymmetric 20 mi (32 km)-wide eye; little further strengthening occurred over the course of the night. Upon Cindy's landfall at High Island the following morning, its atmospheric pressure was measured at 996 mbar (hPa; 29.41 inHg), and winds reached 75 mph (120 km/h). Soon after moving ashore, Cindy became nearly stationary for 18 hours, maintaining tropical storm status before weakening to a tropical depression at 1200 UTC on 18 September. The remnants of Cindy gradually turned westward-to-southwestward and decreased in strength during 18 and 19 September. As a result of its abnormally slow movement and deterioration, extremely heavy rains were recorded over Texas and Louisiana, especially in the storm's northeastern quadrant. Cindy finally dissipated on 20 September while situated west of Corpus Christi.
Tropical Storm Cindy (1963)