US Patent 7593883 Financial activity based on tropical weather events

A graphical user interface for a financial activity network that includes a central managing system connected to a plurality of participant terminals. Rules governing operation of the financial activity are stored for future reference. A participant provides investment information such as a map location for the predicted strike by the natural event and, optionally, one or more secondary parameters relating to the natural event, such as the time interval between the time of investment and the time of all event strike and/or the severity of the event strike according to an established scale. Graphical user interfaces are described for such activities.