This is the water that is pushed toward land from the high winds of a major storm (e.g., hurricane)
Mississippi Coastal Mapping Project (Identifying the Flood Risks in Mississippi's Coastal Communities), Glossary & Acronyms, Mississippi, USA 2015. http://www.mscoastalmapping.com/GlossaryAcronyms.h tm, (CoaStormEmr - Amer) {886}