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Lightning locations from the NationalLightning Detection Network have proven to be auseful indicator of convective outbreaks in incipientand mature hurricanes that are within 400-500 km ofthe U.S. coast. Such outbreaks often signalsubstantial deepening of the storms (Molinari et al.1994, 2004; Demetriades and Holle 2006). Lightningdistribution in tropical cyclones also gives insightinto their evolving thermodynamic structure.Because major questions still remain about howtropical cyclones form, lightning information ispotentially of significant value, both for predictionand understanding of storms, during the early stagesof development.though it remained over warm water. This writeupwill focus on the period that Claudette suddenlygained, then lost, hurricane intensity. Of interest iswhether long range lightning data provide someinsight into the behavior of the storm.2. RESULTSVertical wind shear represents a key variablein tropical cyclone intensity change. Shelton (2005)showed that vertical wind shear was strong from thesouthwest and west-southwest during most of thelifetime of TS/Hurricane Claudette. The distributionof lightning flashes with respect to the storm center