Hurricane
Definition
HOW DO HURRICANE FORM?
During the summer and fall months, the sun's radiation beats down continuously on the ocean waters in the tropics. As a result, warm air rises and drifts skyward.
Cooler air from above takes the place of rising, warm air. This is known as a convection cycle. The cooler air begins spinning counter clockwise around the developing storm. As the warm air continues to rise in the convection cycle, the atmospheric will pressure fall, making the winds blow stronger.
Before a hurricane is able to develop, the ocean waters must have a surface temperature of at least 80°F. Air near the oceans surface must contain a lot of moisture. Finally, winds must be converging which means coming together from different directions.
As a storm system develops, moisture continues to evaporate from the ocean surface. This moisture condenses as it rises. Soon, clouds and rain become caught up in the circular motion of a storm. As long as the tropical storm remains over the warm water of the open ocean, the hurricane can get stronger and larger.
If the winds of the developing storm remain less than 35 mph, then the system is called a tropical depression. When the wind speeds reach 35 to 74 mph, the disturbance is called a tropical storm. At this point, the storm system is given a name in order to identify, track, and forecast it. When the winds reach 75 mph or greater, a hurricane is said to be born. Hurricanes can be as large as 600 miles in diameter, and can reach to height of 50,000 feet into the sky.
PARTS OF THE HURRICANE
KIND OF HURRICANE
The Saffir/Simpson Hurricane Damage-Potential Scale separates hurricanes into five different categories. The scale relates hurricane intensity (central pressure, winds, and storm surge) to damage potential. Category one is the weakest and five is the strongest. The scale is useful for making decisions about public safety.
The Category of Hurricane
Things to Do Before Hurricane
DURING A HURRICANE
If the center of the eye passes though your area, stay indoors unless emergency repairs are absolutely neccesary. Wind and rain may stop, and it may be sunny for a short while. Beware,the wind may suddenly pick up again from the opposite direction with greater force than before.
~ stay inside a well-constructed building
~ stay away from all windows and doors
~ close all interior doors
~ go to an interior room such as a basement
0 komentar:
Posting Komentar