Classroom Damaged by Hurricane Maria (IMAGE) Medical University of South Carolina Caption A classroom in Puerto Rico shows the damage from Hurricane Maria, which was a category 4 storm when it struck the US territory on September 20, 2017. Credit Provided by Rosaura Orengo-Aguayo 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.