D: Depresión Tropial – vientos menores a 62 KMH (Tropical Depression – wind speed less than 39 MPH)
S: Tormenta Tropical – vientos entre 62 KMH y 117 KMH (Tropical Storm – wind speed between 39 MPH and 73 MPH)
H: Huracán – vientos entre 119 KMH y 177 KMH (Hurricane – wind speed between 74 MPH and 110 MPH)
M: Huracán Perro – vientos mayores a 177 KMH (Major Hurricane – wind speed greater than 110 MPH)