Earth  ID: 4458

Harvey Floods Texas and Threatens Louisiana (Final Tropical Storm Update)

The Global Precipitation Mission (GPM) Core Observatory captured these images of Hurricane Harvey August 27th through the 30th, 2017.

At 11:45 UTC and 21:25 UTC on the 27th of August nearly two days after the storm made landfall Harvey was meandering slowly southeast at just 2 mph (~4 kph) near Victoria, Texas west of Houston. The images at this stage show rain rates derived from GPM's GMI microwave imager (outer swath) and dual-frequency precipitation radar or DPR (inner swath) overlaid on enhanced infrared data from the GOES-East satellite as well as the IMERG precipitation product. Harvey's cyclonic circulation is still quite evident in the infrared clouds, but GPM shows that the rainfall pattern is highly asymmetric with the bulk of the rain located north or east of the center. A broad area of moderate rain can be seen stretching from near Galveston Bay to north of Houston and back well to the west. Within this are embedded areas of heavy rain (red areas); the peak estimated rain rate from GPM during these overpasses was 96 mm/hr (~3.77 inches per hour). With Harvey's circulation still reaching out over the Gulf, the storm is able to draw in a continuous supply of warm moist air to sustain the large amount of rain it is producing.

At 10:45 UTC and 20:25 UTC on August 28th Harvey's outer bands can be seen drenching the Louisana coastline, despite the fact that the main part of the storm still lingered over Houston, Texas.

Finally, on August 30th at 10:35 UTC Harvey can be seen shortly after making landfall a second time. Approximately 10 hours later Harvey can still be seen in nearly the same location continuing to dump heavy amounts of rain across the Texas/Louisiana border.

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Visualization Credits

Alex Kekesi (Global Science and Technology, Inc.): Lead Data Visualizer
Horace Mitchell (NASA/GSFC): Data Visualizer
Ernie Wright (USRA): Data Visualizer
Ryan Fitzgibbons (USRA): Lead Producer
Gail Skofronick Jackson (NASA/GSFC): Lead Scientist
George Huffman (NASA/GSFC): Lead Scientist
Dalia B Kirschbaum (NASA/GSFC): Lead Scientist
Laurence Schuler (ADNET Systems, Inc.): Technical Support
Ian Jones (ADNET Systems, Inc.): Technical Support
Please give credit for this item to:
NASA's Scientific Visualization Studio. GPM data provided by the joint NASA/JAXA GPM mission.

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Global Precipitation Measurement (GPM)

Data Used:
8/19/2017 - 8/30/2017
GPM/GMI/Surface Precipitation also referred to as: Rain Rates
8/27/3017 11:01:39-12:01:37 Z, 8/27/2017 21:01:40-22:01:38 Z, 8/28/2017 10:01:40-11:01:38 Z, 8/28/2017 20:01:39-21:01:37 Z, 8/30/2017 10:01:39-11:01:37 Z, 8/30/2017 20:01:39-21:01:37 Z
Data provided by the joint NASA/JAXA GPM mission.
GPM/DPR/Ku also referred to as: Volumetric Precipitation data
Observed Data - JAXA - 8/27/2017 11:01:39-11:06:37 Z, 8/27/2017 21:11:28-21:41:27 Z, 8/28/2017 10:41:28-11:11:27 Z, 8/28/2017 20:11:28-20:41:27 Z, 8/30/2017 10:11:28-10:41:27 Z, 8/30/2017 20:11:28-20:41:27 Z
Data provided by the joint NASA/JAXA GPM mission.
also referred to as: IMERG
Data Compilation - NASA/GSFC - 8/19/2017 - 8/30/2017
Note: While we identify the data sets used in these visualizations, we do not store any further details nor the data sets themselves on our site.

This item is part of this series:

DLESE >> Atmospheric science
DLESE >> Hydrology
DLESE >> Natural hazards
GCMD >> Earth Science >> Atmosphere >> Precipitation
GCMD >> Earth Science >> Atmosphere >> Atmospheric Phenomena >> Hurricanes
GCMD >> Earth Science >> Atmosphere >> Precipitation >> Precipitation Amount
GCMD >> Earth Science >> Atmosphere >> Precipitation >> Precipitation Rate
GCMD >> Earth Science >> Hydrosphere >> Surface Water >> Floods
SVS >> Hyperwall
SVS >> Hurricanes >> Precipitation
NASA Science >> Earth
GCMD >> Earth Science >> Human Dimensions >> Natural Hazards >> Floods
GCMD >> Earth Science >> Terrestrial Hydrosphere >> Surface Water >> Floods

GCMD keywords can be found on the Internet with the following citation: Olsen, L.M., G. Major, K. Shein, J. Scialdone, S. Ritz, T. Stevens, M. Morahan, A. Aleman, R. Vogel, S. Leicester, H. Weir, M. Meaux, S. Grebas, C.Solomon, M. Holland, T. Northcutt, R. A. Restrepo, R. Bilodeau, 2013. NASA/Global Change Master Directory (GCMD) Earth Science Keywords. Version