Below is a map, with a bunch of boxes and the coordinates of their Southwest and Northeast corners. These are going to be the areas of greatest focus for land-based weather stations.
GOMandCarib: sw – 5,-103, ne – 33,-44
EastUSAtlantic:30,-83;41,-68
WestUSAPacific: 33,-127; 45,-114
BajaCalif: 17,-123; 35,-100