When Typhoon Sinlaku struck the Northern Mariana Islands and Guam, it disabled ground-based weather radars and rain gauges – the very tools designed to track the storm. As part of the coordinated U.S. response to Sinlaku, the NASA Disasters Program shared IMERG satellite-based observations of rainfall, filling a critical data gap and giving responders a clearer view of the storm’s impacts to the islands. 

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NASA Tracked Sinlaku's Rainfall from Space When Ground Radars Went Dark