The term 'tropical' refers to both the geographic origin of these systems, which form almost exclusively in tropical regions of the globe, and their formation in maritime tropical air masses. The term 'cyclone' refers to such storms' cyclonic nature, with anticlockwise rotation in the Northern Hemisphere and clockwise rotation in the Southern Hemisphere. Depending on its location and intensity, a tropical cyclone can be referred to by names such as 'hurricane', 'typhoon', 'tropical storm', 'cyclonic storm', 'tropical depression', or simply 'cyclone'.
Unlike the devastating Tropical Storm Allison earlier in the season, Barry's effects were moderate. Nine deaths occurred, six in Cuba and three in Florida. As a tropical cyclone, rainfall peaked at 8.9 in (230 mm) at Tallahassee, and winds gusts topped out at 79 mph (127 km/h). The wave that would become Barry dropped large amounts of rain across southern Florida, which led to significant flooding and structural damage. Moderate flooding occurred throughout the Panhandle, where damage was also reported as a result of high wind gusts. As the storm's remnants tracked inland, parts of the Mississippi Valley received light precipitation. Barry is estimated to have caused $30 million (2001 USD, $36.5 million 2008 USD) in damage.
The MODIS instrument onboard NASA's Terra satellite captured this true-color image of Tropical Cyclone Gafilo churning in the waters northwest of Madagascar on March 6, 2004. At the time this image was taken, Gafilo has sustained winds of approximately 160 mph. Cyclone warnings had been posted for all of northwestern Madagascar.