Reviving Tropical Storm Harvey's Remnants Observed By GPM

The National Hurricane Center (NHC) upgraded the remnants of tropical storm Harvey to a tropical Depression on August 23, 2017 at 10:00 AM CDT (1500 UTC). Harvey became better organized and was revived after moving from Mexico's Yucatan Peninsula into the Bay of Campeche. The warm waters of the Gulf of Mexico and favorable vertical wind shear promoted the regeneration of the tropical cyclone.

Reviving Tropical Storm Harvey's Remnants Observed By GPM

The GPM core observatory satellite flew over the regenerating tropical cyclone on August 23, 2017 at 6:58 AM CDT (1158 UTC). Data collected by GPM's Microwave Imager (GMI) and Dual-Frequency Precipitation Radar (DPR) instruments showed that Harvey's remnants contained areas of moderate to heavy rainfall. A feeder band spiraling in from the southern side of the low contained rain falling at a rate of greater than 1.96 inches (50 mm) per hour.

Reviving Tropical Storm Harvey's Remnants Observed By GPM

GPM's radar data (DPR Ku band) were used to show the 3-D rainfall structure of rainfall within regenerating tropical depression Harvey. Those 3-D scans showed that storm tops with the feeder bands in the Bay Of Campeche were reaching heights above 8.6 miles (13.9 km).

The National Hurricane Center (NHC) predicts that tropical depression Harvey will intensify to tropical storm intensity as it heads toward Texas. Harvey is expected to produce heavy rainfall over eastern Texas, Louisiana, and the lower Mississippi Valley from Friday through early next week. Storm surge flooding along the Gulf Coast is another potential danger with the tropical storm.

Reviving Tropical Storm Harvey's Remnants Observed By GPM

Images and caption by Hal Pierce (SSAI/NASA GSFC)