https://phys.org/news/2019-03-aqua-satellite-tropical-cyclone-idai.html

Tropical Cyclone Idai developed on March 9 around 4 a.m. EST (0900 UTC). It developed from the low pressure area designated System 98S. When it strengthened into a depression, it was renamed Tropical Cyclone 18S. After strengthening into a tropical storm on March 10, it was renamed Idai.

On March 11, 2019, the Moderate Resolution Imaging Spectroradiometer or MODIS instrument aboard NASA's Aqua satellite captured a visible image of Tropical Cyclone Idai. Bands of powerful thunderstorms were wrapping around an eye obscured by high clouds. The eye appears to be about 17 nautical-miles wide. At the time of the image, west-central Mozambique was being affected by the eastern quadrant of this powerful storm.