The National Weather Service (NWS) is exploring the use of Internet Mapping Service (IMS) technology to disseminate weather information. IMS provides the basis for providing access to geospatial information over the Internet using only a Web browser. It also allows users of decision support systems based on Geographic Information Systems (GIS) to directly integrate information into their operations. A prototype IMS site, providing information relevant to landfalling tropical cyclones in the southeastern United States, was made available during the second half of the 2003 hurricane season, primarily to aid the operations of emergency managers. The presentation will provide an overview of the IMS prototype, show examples of the user interface, and review the data layers. A companion paper will describe the history, development and potential future directions for using IMS technology across the NWS.