But if you develop persistent muscle weakness, or muscle weakness with no apparent cause or normal explanation, it may be a sign of an underlying health problem. Voluntary muscle contractions are usually generated when your brain sends a signal through your spinal cord and nerves to a muscle.
Of these factors, only rising sea surface temperatures was found to influence hurricane intensity in a statistically significant way over a long-term basis. The other factors affected hurricane activity on short time scales only. rise in the world's sea surface temperatures was the primary contributor to the formation of stronger hurricanes since 1970, a new study reports.
A hurricane beings over warm ocean water as a low-pressure area, or tropical disturbance. A hurricane draws its energy from the warm, humid air at the ocean's surface. As this air rises and forms clouds, more air is drawn into the system. As with storms systems, winds spiral inward toward the area of low-pressure. Inside the storm are bands of very high winds and heavy rains. Why are hurricanes dangerous? The Result is a storm surge, a dome of water that sweeps across the coast where hurricanes lands. Storm Surges can cause great damage, washing away beaches, destroying buildings along the coast, and eroding the coastlines.