Debby’s Deluge: The Southeast Submerged by Over a Foot of Rainfall

Tropical Storm Debby struck the U.S. Southeast in early August 2024, bringing with it over a foot of rainfall across several states. After initially hitting Florida, the storm caused extensive flooding in the Carolinas. NASA is actively tracking the storm’s progression and its impact.

Tropical Storm Debby lashed the U.S. Southeast in the first week of August 2024, dropping copious amounts of rain. The storm first came ashore as a Category 1 hurricane in Florida’s Big Bend region on August 5 and then weakened to a tropical storm as its center moved inland. Skirting the Atlantic coast, it added to rainfall totals in Florida, Georgia, and the Carolinas.

The map above shows rainfall accumulation over the five-day period ending at 7:59 p.m. Eastern Time (23:59 Universal Time) on August 7, 2024. These data are remotely sensed estimates that come from IMERG (the Integrated Multi-Satellite Retrievals for GPM), a product of the GPM (Global Precipitation Measurement) mission, and may differ from ground-based measurements. For instance, IMERG data are averaged across each pixel, meaning that rain-gauge measurements within a given pixel can be significantly higher or lower than the average.