NHC Shapefiles to GMT
From Jay's Cafe' Wiki
How To:
https://gis.stackexchange.com/questions/107325/how-to-convert-shp-files-to-gmt-format-type-files
NHC Shapefiles -- have no idea what they contain.
https://www.nhc.noaa.gov/archive/xgtwo/atl/latest/gtwo_shapefiles.zip
