Understanding Tornadoes: Why They Happen Every Year
Each year, tornadoes capture the imagination and fear of people worldwide. Their immense power and unpredictability can devastate communities within minutes. But why do they occur so regularly? 1. Atmospheric Conditions and Tornado Formation Tornadoes arise from thunderstorms, particularly supercells, which are characterized by rotating updrafts. These are conducive to tornado formation due to specific atmospheric conditions: - Moisture: Humid air is vital for thunderstorms, which precede tornadoes. - Instability: Warm, moist air near the surface meets cooler, drier air above, creating an unstable environment. - Lift: A lifting mechanism, such as a front or a mountain range, forces warm air to rise, triggering storm development. - Wind Shear: Changes in wind speed and direction with altitude cause rotating updrafts. When these elements align, a thunderstorm can develop into a supercell, and with strong ...