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  • NASA Sees Heavy Rainfall Occurring in Strengthening Tropical Storm Mario

    The GPM's core satellite passed over Mario on Sept. 18 at 3:46 a.m. EDT (0746 UTC). GPM found the heaviest rainfall in the southeastern side of the storm falling at a rate of over 36 mm (about 1.4 inches) per hour. Lighter rainfall rated were measured throughout the rest of the east and southern quadrants and band of thunderstorms south of the center. Forecasters at NOAA's National Hurricane Center or NHC incorporate the rainfall data into their forecasts