A financial activity network 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 an event strike and/or the severity of the event strike according to an established scale. In one example, an external objective independent information source is consulted, with the external objective independent information source providing monitoring, interpretation and derived determination of parameters pertaining to the natural event. Methods and articles of manufacture are also disclosed.