The map shows a satellite-based estimate of rainfall from May 15-22, 2016. The data come from the Integrated Multi-Satellite Retrievals for GPM (IMERG), a product of the Global Precipitation Measurement mission. The brightest shades on the maps represent rainfall totals of at least 800 millimeters (more than 30 inches) during that period. Blue areas saw less rain, and gray areas received no rain. These regional, remotely-sensed estimates may differ from the totals measured by ground-based weather stations.
NASA
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