Saffir/Simpson Hurricane Scale:



Hurricanes are categorized according to the strength of their winds using the Saffir/Simpson Hurricane Scale:

 

 

  • Category 1:  Winds: 74-95 mph    Pressure:  >28.94    Storm Surge:4-5 feet
  • Category 2:  Winds: 96-110 mph    Pressure:  28.50-28.91    Storm Surge:6-8 feet
  • Category 3:  Winds: 111-130    Pressure:  27.91-28.47    Storm Surge:9-12 feet
  • Category 4:  Winds: 131-155 mph    Pressure:   27.17-27.88    Storm Surge:13-18 feet
  • Category 5:  Winds:  >155    Pressure:  <27.17    Storm Surge: 18 + feet

 

Hurricane Names:


2009

2010

2011

Ana

Bill

Claudette

Danny

Erika

Fred

Grace

Henri

Ida

Joaquin

Kate

Larry

Mindy

Nicholas

Odette

Peter

Rose

Sam

Teresa

Victor

Wanda

Alex

Bonnie

Colin

Danielle

Earl

Fiona

Gaston

Hermine

Igor

Julia

Karl

Lisa

Matthew

Nicole

Otto

Paula

Richard

Shary

Tomas

Virginie

Walter

Arlene

Bret

Cindy

Don

Emily

Franklin

Gert

Harvey

Irene

Jose

Katia

Lee

Maria

Nate

Ophelia

Philippe

Rina

Sean

Tammy

Vince

Whitney

 

Weather Definitions:


  • Tropical Wave: A trough of low pressure in the trade-wind easterlies.
  • Tropical Disturbance: A moving area of thunderstorms in the Tropics that maintains its identity for 24 hours or more. A common phenomenon.
  • Tropical Depression: An organized system of clouds and thunderstorms with a defined surface circulation and maximum sustained winds* of 38 mph (33 kt**) or less
  • Tropical Storm: An organized system of strong thunderstorms with a defined surface circulation and maximum sustained winds of 39-73 mph (34-63 kt)
  • Hurricane: An intense tropical weather system of strong thunderstorms with a well-defined surface circulation and maximum sustained winds of 74 mph (64 kt) or higher .
  • Tropical Storm Watch: Issued for a coastal area when there is the threat of tropical storm conditions within 36 hours.
  • Tropical Storm Warning: A warning for tropical storm conditions including sustained winds within the range of 39 to 73mph (34 to 63 knots) which are expected in a specified area within 24 hours.
  • Hurricane Watch: An announcement that hurricane conditions pose a possible threat to a specified coastal area within 36 hours.
  • Hurricane Warning: A warning that sustained winds of 74 mph(64kts) or higher are expected in a specified coastal area within 24 hours.
  • Storm Surge: An abnormal rise of the sea along a shore as the result, primarily, of the winds of a storm.
  • Flash Flood Watch: Means that flash flood conditions are possible within the designated watch area.
  • Flash Flood Warning: Means a flash flood has been reported or is imminent.

* Sustained winds are defined as a 1-minute average wind measured at about 33 ft (10 meters) above the surface. ** 1 knot = 1 nautical mile per hour or 1.15 statute miles per hour. Abbreviated as "kt"