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Costal Storms and Hurricanes

Hurricane CharleyGeneral Hurricane Information

 Hurricanes are cyclones over water while tornadoes are cyclones over land. 

Hurricane season runs from June 1 to November 30 each year. September is the highest probability month of the season. There is an average of 10 named storms per season according to the National Hurricane Center. A storm gets named as it reaches tropical storm status. Residents and visitors to the area should learn the elevation of where they are in relation to sea level and the storm surge history of the area. Storm surge is a dome-like rise in the ocean level associated with the hurricane. 

Meteorologists classify hurricanes by categories of 1-5 using a scale that measures the wind and speed of the storm. A Tropical Depression has a highest wind speed of 38 miles per hour (33 knots), with some rotary circulation and one or more closed isobars. A Tropical Storm has distinct rotary circulation with wind speeds of 39- 73 miles per hour (34-63 knots), closed isobars and a pressure of 14.0 pounds per square foot. A Hurricane has strong and very pronounced rotary circulation, closed isobars, a pressure of 17 or more pounds per square foot and winds of 74 miles per hour (64 knots) and higher. The devastating class 5 hurricane exceeds wind speed of 156 miles per hour.

The Forecasted 2007 Atlantic Season

NOAA experts predict an above average Atlantic basin tropical cyclone season for 2007 and anticipate an      above-average probability of United States major hurricane landfall. The 2007 forecast includes:
-- 17 Named Tropical Storms.
-- 9 Hurricanes
-- 5 Major Hurricanes, with winds of at least 111 mph.

The probability for at least one major (category 3-4-5) Hurricane landfall on each of the following Coastal Areas:

1) Entire U.S. coastline - 64% (average for last century is 74%

2) U.S. East Coast including Peninsula Florida - 50% (average for last century is 31%)

3) Gulf Coast from the Florida Panhandle westward to Brownsville - 49% (average for last century is 30%)

4) Above-average major hurricane landfall risk in the Caribbean

The 2006 Atlantic Season predictions, updates, and actual storms (Obs.)

 

2006

 

6 Dec. 2005

Update

4 April

Update

31 May

Update

3 August

Update

1 Sept.

Update

3 Oct.

 

Obs.

No. of Hurricanes

9

9

9

7

5

6

5

No. of Named Storms

17

17

17

15

13

11

9

No. of Hurricane Days

45

45

45

35

13

23

20

No. of Named Storm Days

85

85

85

75

50

58

50

Intense Hurricanes

5

5

5

3

2

2

2

Intense Hurricane Days

13

13

13

8

4

3

3

Net Tropical Cyclone Activity

195

195

195

140

90

95

85

 

2007 Hurricane Names

Andrea
Barry
Chantal
Dean
Erin
Felix
Gabrielle
Humberto
Ingrid
Jerry
Karen
Lorenzo
Melissa
Noel
Olga
Pablo
Rebekah
Sebastien
Tanya
Van
Wendy

For more information:
Florida Hurricane Info
NOAA
FEMA
Center for Disease Control - CDC


Copyright © 1996-2008 City of Tampa.  All rights reserved. - Last Updated: 6/1/2007