Patent ID: 7584134

Claim:
A computerized method of offering for purchase, positions predicting a future fast hurricane landstrike resulting from a substantially continuous ongoing natural process culminating in a future first hurricane landstrike, comprising: providing a computer graphical user interface having first and second portions; providing a database containing 1) a map of geographical areas corresponding to the positions to be offered for purchase, 2) strike probabilities of future first hurricane landstrikes in the geographical areas; 3) offer prices for purchasing positions predicting future first hurricane landstrikes in respective geographical areas, that are electronically calculated, based at least in part on respective strike probabilities and 4) returns on investment electronically calculated, based at least in part on respective strike probabilities, that the user can expect from the investment; displaying the map in the first portion of the graphical user interface with user selectable portions corresponding to the geographical areas of the map; and in response to a user selecting a user selectable portion and thereby indicating a geographical area for selection, displaying in the second portion of the graphical user interface, a summary of purchase—related offer information for an indicated geographical area, including a strike probability of a future first hurricane landstrike in the indicated geographical area, an offer price for purchasing a position predicting the future first hurricane landstrike in the indicated geographical area; and a return on investment that the user can expect on the investment.