StormScore

StormScore is a method of measuring hurricane intensity.

How it works
StormScore works by getting the peak wind speed of the hurricane (in mph), dividing it by 4, and then adding it to the amount of days it was extant and tropical/subtropical divided by 4. Bonus points are added for each category:

TD: 1

SS/TS (less than 55 mph): 2

SS/TS (more than 55 mph): 4

C1: 6

C2: 8

C3: 10

C4: 12

C5: 14

C5 >=175 mph: 16

C5 >=190 mph: 18

C5 >=215 mph: 20

For example, Hurricane Irma (2017) would be 185mph / 4 (46.25) + 13 / 4 (3.25) + 16 (C5 >175 mph bonus) = a score of 65.5.

Scores for selected storms
Hurricane Irma (2017) - 65.5 (185mph/4 + 13 days/4 + 16 wind speed bonus)

Tropical Depression 8 (2013) - 10 (35mph/4 + 1 day/4 + 1 wind speed bonus)

Typhoon Haiyan (2013) - 69 (195mph/4 + 9 days/4 + 18 wind speed bonus)

Hurricane Patricia (2015) - 74.75 (215mph/4 + 4 days/4 + 20 wind speed bonus)

Tropical Storm Grace (2009) - 21 (65mph/4 + 3 days/4 + 4 wind speed bonus)

Hurricane Andrew (1992) - 62.75 (175mph/4 + 12 days/4 + 16 wind speed bonus)

Hurricane Maria (2017) - 63.75 (175mph/4 + 14 days/4 + 16 wind speed bonus)

Hurricane Jose (2017) - 55 (155mph/4 + 17 days/4 + 12 wind speed bonus)

Hurricane Matthew (2016) - 58 (165mph/4 + 11 days/4 + 14 wind speed bonus)