Origin of Moisture for the Precipitation Produced by the Exceptional Winter Storm Formed over the Gulf of Mexico in March 1993

On 12–15 March 1993, a severe winter storm (SC93) formed over the Gulf of Mexico, affecting Caribbean Islands and eastern coast United States (US) Canada with notable amount precipitation, snow local storms. In this study, we investigate origin precipitation generated by SC93 applying widely used Lagrangian moisture source diagnostic method. Our findings revealed that most came from western North Atlantic Ocean, Sea Mexico. Moreover, US Mexico acted as terrestrial sources. Overall, contribution oceanic was higher than counterpart, sources progressively shifted northward moved. addition, uptake mainly occurred in cyclone–anticyclone interaction region.