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On September 29, 2023, NOAA’s GOES-16 watched as torrential rain

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impacted New York City and the surrounding region.

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Eight inches of rain in some parts of New York City caused flash flooding,

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turning streets into rivers and stranding commuters.

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GOES-16 watched the storm advance across the region in near real-time.

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The satellite’s Advanced Baseline Imager (ABI) measured water

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vapor in the atmosphere over New York City.

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Infrared imagery revealed which parts of the storm were the most

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intense and produced the heaviest rain.

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Meanwhile, NOAA’s Joint Polar Satellite System (JPSS) collected data

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on the storm system.

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The NOAA/NASA Suomi NPP satellite measured total precipitable

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water and the rainfall rate.

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The satellite also measured water vapor, revealing the heaviest

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concentration over the Northeast.

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The data collected by GOES and JPSS 
are used to help produce flood maps.

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These maps help emergency
 management determine where to send aid.

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The maps also provide insight into 
where water is receding after a flood event.

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When storm systems develop with the potential to cause flash flooding,

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NOAA satellites will be watching.

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Earth From Orbit: Heavy Rains Cause Fooding in New York City

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Photo: Marc A. Hermann/MTA. 
Flood map imagery courtesy of SSEC.

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