GFMS Floods Intensity Maps for Harvey 8/26-8/29

August 29, 2017

GFMS Floods Intensity Maps for Harvey 8/26-8/29

Flood estimates from GFMS using IMERG input show evolution of flooding over 8/26-8/29, with expansion from Houston area to southeastern Texas and Louisiana.

Flood estimates from GFMS using IMERG input show evolution of flooding over the last few days, with expansion from Houston area to southeastern Texas and Louisiana. 

 

GPM IMERG 3-day precipitation accumulation from 8/29/17

Satellite-based rainfall (GPM IMERG) from now Tropical Storm Harvey over the last three days compares fairly well with raingauges, except for peak values.  IMERG has peaks of about 500 mm (~ 20”) around Houston, whereas gauges indicate over 35”.  Contour at 150 mm, however, agrees reasonably well.

 

Data Sources: