Extra Tropical Transition: 31 July - 06 August 2004
Competency Framework
WMO Satellite Skills
Application
Description
This is a case study on Extra Tropical Transition, the process by which a hurricane can change from a tropical cyclone to a mid-latitude depression.
Content
This study concentrates on the case of hurricane Alex as it progressed though transition zone and crossed the Atlantic as an extra tropical cyclone. Between 31 July and 6 August 2004 the hurricane reached the Outer Banks in North Carolina. At this stage his intensity was classified as category 1. Within the further movements the hurricane strengthened and reached category 3.
This study will introduce the concept of ETT and compare it to other conceptual models. Therefore several indicators from the satellite imageries as well as the derived numerical parameters will be analyzed.