Near the equator, warm ocean water provides the energy that can turn a low-pressure center into a violent storm. As water evaporates from the ocean, energy moves from the ocean water into the air. ... The winds blow faster and faster around the low, which becomes the center of a storm system.
Explanation: The first two quotes used show Walsh's apprehension about the people turning themselves in, and the last confirms that this apprehension is because of bad past experiences.