Hurricanes


Saffir-Simpson Hurricane Wind Scale

Category Wind speed Description Examples
1 33-42 m/s
64-82 kt
119-153 km/h
74-95 mph
Very dangerous winds with some damage
  • Usually no significant structural damage to most permanent structures
  • Can topple unanchored mobile homes
  • Can uproot or snap trees
  • Poorly attached roof shingles or tiles can blow off
  • Possible coastal flooding
  • Possible widespread to extensive power outages
  • Barbara (2013)
  • Isaac (2012)
  • Humberto (2007)
  • Claudette (2003)
  • Jerry (1989)
2 43-49 m/s
83-95 kt
154-177 km/h
96-110 mph
Extremely dangerous causing extensive damage
  • Often damage roofing material
  • Often damage upon poorly constructed doors and windows
  • Many uprooted or snapped trees
  • Mobile homes damaged or even destroyed
  • Likely extensive to near-total power outages and scattered loss of potable water
  • Arthur (2014)
  • Ernesto (2012)
  • Alma (1996)
  • Erin (1995)
  • Diana (1990)
3 50-58 m/s
96-112 kt
178-208 km/h
111-129 mph
Devastating Damage
  • Can cause structural damage to small residences and utility buildings
  • Mobile homes usually destroyed
  • Usually severe or irreparable damage to manufactured homes
  • Flooding near coast destroys small structures
  • Many uprooted or snapped trees
  • Terrain may be flooded well inland
  • Near-total to total power loss for up to several weeks likely
  • Water likely to be lost or contaminated
  • Karl (2010)
  • Lane (2006)
  • Isidore (2002)
  • Fran (1996)
  • Roxanne (1995)
4 58-70 m/s
113-136 kt
209-251 km/h
130-156 mph
Severly devastating damage
  • More extensive curtainwall failures
  • Some complete structural failure on small residences
  • Mobile and manufactured homes often flattened
  • Most trees uprooted or snapped
  • Extensive beach erosion
  • Possible flooding of terrain far inland
  • Total and long-lived electrical and water losses expected
  • Gustav (2008)
  • Dennis (2005)
  • Charley (2004)
  • Luis (1995)
  • Iniki (1992)
5 >= 70 m/s
>= 137 kt
>= 252 km/h
>= 157 mph
Catastrophic damage
  • Complete roof failure on many residences and industrial buildings
  • Some complete building failures
  • Small utility buildings blown over or away
  • Collapse of many wide-span roofs and walls
  • Very heavy and irreparable damage to many wood frame structures
  • Total destruction to mobile/manufactured homes prevalent
  • Only very well-constructed structures not destroyed
  • Flooding causes major damage to lower floors of all structures near shoreline
  • Massive evacuation of residental areas may be required
  • Total and extremely long-lived extensive power outages and water losses expected
  • Patricia (2015)
  • Felix (2007)
  • Dean (2007)
  • Andrew (1992)
  • Gilbert (1988)


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