GPM Image of Kirk (IMAGE) NASA/Goddard Space Flight Center Caption The GPM core satellite passed over Tropical Storm Kirk at 8:36 a.m. EDT (1236 UTC) on Friday, Sept. 28, 2018. GPM found the heaviest rainfall (pink) was around the center of circulation located west of the Leeward Islands. There, rain was falling at a rate of 100 mm (about 4 inches) per hour. Rain extended east of the center over the island chain where rain was falling (yellow, blue) between 10 and 40 mm (0.4 and 1.5 inches) per hour. Credit NASA/JAXA/NRL Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.