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  NOAA predicting above normal Atlantic hurricane season.


Glenroy Brown, May 20, 2011
Atlantic basin is expected to see an above-normal hurricane season this year.

Tropical Storm

The Atlantic basin is expected to see an above-normal hurricane season this year, according to the seasonal outlook issued by NOAA’s Climate Prediction Center, a division of the National Weather Service.  

The Atlantic Basin for the six-month season, from June 1 to November 30, NOAA is predicting the following ranges this year: 

*       12 to 18 named storms (winds of 39 mph or higher), of which: 

*       6 to 10 could become hurricanes (winds of 74 mph or higher), including: 

*       3 to 6 major hurricanes (Category 3, 4 or 5; winds of 111 mph or higher) 

Each of these ranges has 70% likelihood and indicates that activity will exceed the seasonal average of 11 named storms, six hurricanes and two major hurricanes. 

NOAA said last year's hurricane season was one of the busiest on record, with 19 named storms, including 12 hurricanes. 


Climate factors considered for this outlook are: 

*       The continuing high activity era. Since 1995, the tropical multi-decadal signal has brought ocean and atmospheric conditions conducive for development in sync, leading to more active Atlantic hurricane seasons. 

*       Warm Atlantic Ocean water. Sea surface temperatures where storms often develop and move across the Atlantic are up to one degrees Celsius warmer-than-average. 

*       La NiƱa, which continues to weaken in the equatorial Pacific Ocean, is expected to dissipate later this month or in June, but its impacts such as reduced wind shear are expected to continue into the hurricane season. 

“In addition to multiple climate factors, seasonal climate models also indicate an above-normal season is likely, and even suggest we could see activity comparable to some of the active seasons since 1995. 

NOAA’s seasonal hurricane outlook does not predict where and when any of these storms may hit. Landfall is dictated by weather patterns in place at the time the storm approaches. For each storm, NOAA’s National Hurricane Center forecasts how these weather patterns affect the storm track, intensity and landfall potential. 


Jamaica Weather Report is an established Jamaican web site that targets internet audience both locally and abroad who are seeking weather related information about the island of Jamaica.

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Source: http://www.noaa.gov/index.html

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