Floods

Flooding Rainfall Over the U.S. East Coast Examined by GPM

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Flooding Rainfall Over the U.S. East Coast Examined by GPM

Flood watches and warnings have been issued today for states from North Carolina through New York. Major flooding of rivers and streams is forecast in Pennsylvania as heavy rainfall continues. A Large blocking high located east of Nova Scotia and Low Pressure over the upper mid west has been funneling moisture over the Mid-Atlantic states. This weather pattern includes a strong upper level trough with it’s axis becoming oriented from the Great Lakes through the eastern Gulf Of Mexico.

Southern Texas' Flooding Rainfall Examined With IMERG

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Southern Texas' Flooding Rainfall Examined With IMERG

Extremely heavy rainfall caused a flash flood emergency over southern Texas this week. More than 15 inches (381 mm) of rain fell in Hidalgo County, Texas since Tuesday June 19, 2018. The Governor of Texas declared a state of emergency for six counties in South Texas Thursday afternoon. Heavy rain had ended Friday morning but occasional showers were still occurring over southern Texas. At 4:28 AM CDT Friday June 22, 2018 the National Weather Service in Brownsville, Texas issued a "Flood Warning for Urban Areas and Small Streams in...

GPM Data Used to Evaluate Hawaii's Flooding Rainfall

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GPM Data Used to Evaluate Hawaii's Flooding Rainfall

A low pressure trough moving slowly westward through the northwestern Hawaiian Islands caused destructive flooding and mudslides over the past weekend. The trough disrupted the normal northeast trade winds flow north of Oahu on April 12, 2018. This caused extremely heavy rainfall as the trough deepened and moved very slowly over Kauai during the weekend. The 28.1 inches (713 mm) of rain reported in Hanalei within a 24 hour period was close to a record for the small town on Kauai's northern coast. Almost 32.4 inches (822 mm) of rain was reported during the same period over Wainiha, Kauai.

GPM Gets a Closer Look at Louisiana Floods

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This visualization begins with an overview of the United States showing the clouds and rainfall accumulation of the massive rain event over Louisiana beginning on August 11th, 2016 through August 13th, 2016. The camera then begins to zoom in as time resets to August 11th. Time then slows way down on August 12th to show the first of GPM's passes. In this close up of GPM's volumetric DPR data over Louisiana, a cutting plane materializes into view to show the inner structure of this giant storm system.

Monsoons: Wet, Dry, Repeat

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The monsoon is a seasonal rain and wind pattern that occurs over South Asia (among other places). Through NASA satellites and models we can see the monsoon patterns like never before. 

Monsoon rains provide important reservoirs of water that sustain human activities like agriculture and supports the natural environment through replenishment of aquifers. However, too much rainfall routinely causes disasters in the region, including flooding of the major rivers and landslides in areas of steep topography.

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