Saffir-Simpson Scale

Saffir-Simpson Hurricane Damage-Potential Scale*
Scale Number (Category)	Central Pressure		Winds		Storm Surge		Damage
Scale Number (Category)	mb	in Hg	mi/hr	knots	ft	m	Damage
1	≥ 980	≥ 28.94	74–95	64–82	4–5	~1.5	Mainly to trees, shrubs, unanchored mobile homes (MH)
2	965–979	28.49–28.93	96–110	83 - 95	6–8	~2.0–2.5	Some trees uprooted; roof damage; major damage to MH
3	945–964	28.89–28.48	111–130	96–113	9–12	2.5–4.0	Trees defoliated; large trees uprooted; MH destroyed; some structural damage to small buildings
4	920–944	27.17–27.88	131–155	114–135	13–18	4.0–5.5	All signs destroyed;extensive damage to windows, doors, roofs;MH totally destroyed; storm surge up to 10 km inland
5	< 920	< 27.17	> 155	> 135	> 18	> 5.5	Severe damage to windows, doors and roofs of all buildings; small buildings destroyed; major damage to lower floors < 15 ft above sea level

*The Saffir-Simpson scale was developed in 1971 by civil engineer Herbert Saffir and meteorologist Bob Simpson. It was introduced to the public
in 1973 and became widely used in 1974. Like the tornadic Fujita scale it is assessed on the basis of damage or damage potential. Storms of
category 3 or greater are considered to be "major" hurricanes.