FIGURE 11.1 A tropical wave (also called an easterly wave) as shown by the bending of streamlines—lines that show wind flow patterns.(The heavy dashed line is the axis of the trough.) The wave moves slowly westward, bringing fair weather on its western side and showers on its eastern side. Fig. 11-1, p.294

FIGURE 11.3 A model that shows a vertical view of air motions and clouds in a typical hurricane. The diagram is exaggerated in the vertical. Fig. 11-3, p.296

FIGURE 11.8 Regions where tropical storms form(red shading), the names given to storms, and the typical paths they take (red arrows). Fig. 11-8, p.301

FIGURE 11.6 Development of a hurricane by the organized convection theory. (b) The release of latent heat warms the upper troposphere, creating an area of high-pressure. Upper-level winds move outward away from the high. This movement, coupled with the warming of the air layer, causes surface pressures to drop. As air near the surface moves toward the lower pressure, it converges, rises, and fuels more thunderstorms. Soon a chain reaction develops, and a hurricane forms. Fig. 11-6b, p.299

Table 11-2, p.311

FIGURE 11.17 The number of hurricanes (by each category) that made landfall along the coastline of the United States from 1900 through1999. All of the hurricanes struck the Gulf or Atlantic coasts. Categories 3, 4,and 5 are considered major hurricanes. Fig. 11-17, p.312