1. A method for identifying insurance claims having a relationship with reinsurance related catastrophic events, comprising the steps of: providing a catastrophic database having identified cluster nodes of catastrophic events derived by reported parameters, each said cluster node having an earth position parameter, and a date of occurrence parameter; providing an insurance claims database of claim reports, each such claim report thereof having, an earth location datum and a date datum; deriving a place degree of belonging for each said earth location datum of each said claim report with respect to each said cluster node earth position parameter; deriving a date degree of belonging for each said date datum of each said claims report with respect to each said date of occurrence parameter; selecting a said identified cluster node for each said claim report as that best cluster node optimally corresponding with the derived place degree of belonging and date degree of belonging; and generating a tabular claims file compilation incorporating data from each said claim report, each said claim report being associated with said selected identified best cluster node, with said best place degree of belonging and date degree of belonging.