What information does the NHC issue in their advisories?
The NHC issues an official forecast, every six hours, of the center position, maximum one-minute surface (10 meter [33 ft] elevation) wind speed (intensity), and radii of the 34 knot (39 mph, 63 kph), 50 knot (58 mph, 92 kph), and 64 knot (74 mph, 117 kph) wind speeds in four quadrants (northeast, southeast, southwest, and northwest) surrounding the cyclone. Q: What if an Atlantic storm turns west but dies at sea; or a Gulf storm hits landfall in Mexico; or a Gulf storm hits Tampico, Mexico, but then turns north and east, passing back to the Gulf at about Corpus Christi and hits land again in New Orleans; or the first landfall of an Atlantic storm is in New Brunswick? A: In each case, the “Landfall Location” identified by the code “expire” is the relevant one.
