NASA’s Terra satellite provided forecasters with a look at the strength of the thunderstorms that make up Nana by analyzing cloud top temperatures.

Potential Tropical Depression 16 developed into a tropical storm by 12:05 p.m. EDT on Sept. 1, south of Jamaica. Tropical Storm Nana is the 14th named tropical storm of the 2020 Atlantic hurricane season.

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Image via NASA Goddard Space Flight Center