SUMMER 2003GEOHAZARDS COURSE AT UWI, MONA - page 079

Prepared and compiled by Rafi Ahmad, Unit for Disaster Studies,
Department of Geography and Geology,
University of the West Indies, Mona, Kingston 7, Jamaica

Georges was a category 3 hurricane when it made a landfall on Puerto Rico.
Hurricane Gilbert also moved across Jamaica as a category 3 hurricane. After leaving Jamaica, Gilbert strengthened picking up moisture from the Caribbean Sea, and on September 14, 1988 it slammed into the Yucatan Peninsula as a category 5 hurricane.
Since most of us may have vivid memories of Gilbert, this comparison allows us to anticipate the impacts of Georges.
Hurricane Gordon (8 to 21 November 1994) was a category 1 hurricane.
It made a landfall on Jamaica on 13th November as a tropical storm with a pressure of approximately 999 millibars and winds at 40 knots (about 74 km/hr).
Maximum 48-hour rainfall was 189mm.
Although Gordon was a tropical storm with a modest rainfall, it nevertheless caused landslides and floods resulting in four deaths, over 200 homeless and direct economic losses estimated at US$ 5 million.
GORDON WAS THE DEADLIEST STORM OF 1994 KILLING OVER 1000 PEOPLE IN HAITI AS A RESULT OF MUDFLOWS, MUDSLIDES, AND DEBRIS FLOWS.

Hurricane tracks show the position of the centre of a hurricane, referred to as "eye", at a particular point in time as the system moves forward.
Hurricane's eye is an area of low pressure surrounded by a series of spiral rainbands of high wind and torrential rain that may extend outward for hundreds of kilometres. Therefore, when assessing the likely impacts of a hurricane in any area one must know the extent of rainbands besides the position of the eye.
A hurricane system has a potential to affect areas that may be 100 km away from the eye.
When Georges reaches western Hispaniola and eastern Cuba it is likely that its destructive winds cover a wide swath extending into northern parts of Jamaica.


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