I’m not able to determine the distance to “Melissa” without a clear location. If you mean a person named Melissa, please specify the exact city or coordinates you want to measure from Jamaica to. If you mean the storm Melissa (Hurricane Melissa), the distance concept isn’t applicable in the usual sense, but I can describe its relative proximity to Jamaica and how far away it was at a given time. If you intended a different location, please share:

• The exact starting point in Jamaica (e.g., Kingston, Montego Bay, a GPS coordinate)
• The destination location (city, country, or coordinates)

With those, I can compute the great-circle distance and provide a precise figure.