FORMATION AND MOVEMENT OF WEST INDIAN HURRICANES

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Abstract
The physical features of the hurricane are fairly well understood. The explanation of the process of formation of the hurricane remains in more or less dispute, there being two hypotheses that attempt to satisfactorily explain its origin. There are reasons for believing that countercurrents, having their origin in differences in temperature over large geographic areas, initiate the conditions that give rise to the system of gyrating winds; that the condensation of water vapor supplies the energy necessary to maintain them through considerable periods of time. The movement of the hurricane is generally attributed to the general drift of the air in the region of the hurricane. The daily synoptic weather charts and the observations of the free-air directions and speeds of the winds in regions contiguous to hurricanes appear to indicate that hurricanes are carried forward on the border of the major wind system (the northeast trade) of the tropics, and that as this wind system changes its direction the course followed by the hurricane is changed to correspond thereto.

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