Hurricanes

Hurricanes

• Powerful cyclones that form over the ocean in tropical conditions and has an organized circulation.

• Very Low Pressure area

Normal Pressure -

1013 mb or 14.7 lbs per square inch

• Generates high winds. 74 mph or greater.• Counter Clockwise Rotation –

- Northeast quadrant most severe

Quadrants

Categories

Five Categories

Category Winds Storm Surge

1 74 – 95 mph 4-5 ft

2 96-110 mph 6-8 ft

3 111-130 mph 9-12 ft

4 131-155 mph 13-18 ft

5 + 155 mph + 18 ft

Storm Surge

• Storm surge is a rise in normal water level.

• Caused by onshore winds and decreased atmospheric pressure.

Hurricane Names

2006 2007 2008 2009 2010 2011

AlbertoBerylChrisDebbyErnestoFlorenceGordonHeleneIsaacJoyceKirkLeslieMichaelNadineOscarPattyRafaelSandyTonyValerieWilliam

AndreaBarryChantalDeanErinFelixGabrielleHumbertoIngridJerryKarenLorenzoMelissaNoelOlgaPabloRebekahSebastienTanyaVanWendy

ArthurBerthaCristobalDollyEdouardFayGustavHannaIke

JosephineKyleLauraMarcoNanaOmarPalomaReneSallyTeddyVickyWilfred

AnaBillClaudetteDannyErikaFredGraceHenriIdaJoaquinKateLarryMindyNicholasOdettePeterRoseSamTeresaVictorWanda

AlexBonnieColinDanielleEarlFionaGastonHermineIgorJuliaKarlLisaMatthewNicoleOttoPaulaRichardSharyTomasVirginieWalter

ArleneBretCindyDonEmilyFranklinGertHarveyIreneJoseKatiaLeeMariaNateOpheliaPhilippeRinaSeanTammyVinceWhitney

Retired Names1954 – Carol1954 – Hazel1955 – Connie1955 – Diane1955 – Ione1955 – Janet1957 – Audrey1960 – Donna1961 – Carla1961 – Hattie1963 – Flora1964 – Cleo1964 – Dora1964 – Hilda1965 – Betsy1966 – Inez1967 – Beulah1968 – Edna1969 - Camille

1970 - Celia1972 - Agnes1974 - Carmen1974 - Fifi1975 - Eloise1977 - Anita1979 - David1979 - Frederic1980 - Allen1983 - Alicia1985 - Elena1985 - Gloria1988 - Gilbert1988 - Joan1989 – Hugo

2002 - Isidore2002 - Lili2003 - Fabian2003 - Isabel2003 - Juan2004 - Charley 2004 - Frances2004 - Ivan2004 - Jeanne2005 - Dennis2005 - Katrina2005 - Rita2005 - Stan2005 - Wilma2007 - Dean2007 - Felix2007 - Noel

1990 - Diana1990 - Klaus1991 - Bob1992 - Andrew1995 - Luis1995 - Marilyn1995 - Opal1995 - Roxanne1996 - Cesar1996 - Fran1996 - Hortense1998 - Georges1998 - Mitch1999 - Floyd1999 - Lenny2000 - Keith2001 - Allison2001 - Iris2001 - Michelle

KatrinaFormed - August 23, 2005

Dissipated - August 31, 2005

Highestwinds - 175 mph (280 km/h)

Lowest pressure - 902 mbar (third lowest in history)

Storm Surge – 11.5 ft.

Damages - $81.2 billion (2005 USD) (costliest Atlantic hurricane in history)

Fatalities ≥1,836 total