Tropical Depression Two was a tropical depression that did not reach tropical storm status during the 1991 Atlantic hurricane season. The cyclone developed on July 5 in the western Gulf of Mexico while located east of the Mexican coastline. The cyclone was short-lived, and moved inland on July 6, dissipating that same day over the mountains of Mexico.
The depression caused no damage and no deaths.
|Formation||July 5, 1991|
|Dissipation||July 6, 1991|
|Highest winds||35 mph|
|Lowest pressure||1003 mbar|
|Part of the||1991 Atlantic hurricane season|
Tropical Depression Two's origins are rather speculative, but an area of disturbed weather, possibly in association with a westward-moving tropical wave, was noted over the west-central Gulf of Mexico on July 4. On July 5, the some low- to mid-level cyclonic turning was evident within the system while it was located in the western Gulf of Mexico east of the northeastern coast of Mexico. Based on the aforementioned cyclonic turning, along with the development of upper-level outflow, the system is estimated to have become a tropical depression on the afternoon of July 5. The cyclone was short-lived, and it made landfall along the northeastern Mexican coastline with winds of 35 mph on July 6. The depression dissipated that same day over the mountains of Mexico. Before landfall, 45 to 50 mph flight-level winds were noted via reconnaissance aircraft to be in a small area near the cyclone's center. However, the National Hurricane Center felt that this was not evidence enough to designate the system a tropical storm.
A Tropical Storm Watch, and later a warning, was issued from Baffin Bay, Texas to Tampico, Mexico, due to the small chance that the depression would become a tropical storm. The watches and warnings were discontinued later that day as the cyclone moved inland.
Although a detailed impact is unknown, it is likely that locally heavy rainfall occurred in northeastern Mexico, particularly in mountainous areas. It is also possible that an approaching upper-level trough that was over Texas at the time, pulled in some of the dissipating depression's moisture into south Texas while the storm itself was located over northeastern Mexico. This increase in rainfall across south Texas may have produced some locally heavy rainfall.