IMERG Data From 33W (IMAGE) NASA/Goddard Space Flight Center Caption NASA rainfall analysis encompassed the period from November 19 to 26, 2018 tracked rain dropped by 33W (Usagi) across the South China Sea into Southeast Asia. Tropical Storm Usagi or 33W often dropped more than 240 mm (9.4 inches) of precipitation over southern Vietnam. Rainfall intensity decreased rapidly as the remnants of Usagi moved inland over Cambodia. Credit Credit: NASA/JAXA, Hal Pierce 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.