For Hurricanes, Storms, Raindrop Size Makes All The Difference

When Tropical Storm Gaston hit Richmond, Va., in August 2004, its notable abundance of small and mid-sized raindrops created torrential rains that led to unexpected flash flooding throughout the city and its suburbs. New research from NASA has concluded that tropical cyclones like Gaston produce rain differently than another class of storms called "extra-tropical" cyclones. Making a proper distinction between these systems may be a key to assisting weather forecasters in estimating rainfall intensity.

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