Severe Thunderstorm

A severe thunderstorm is a thunderstorm that poses a significant threat to life and property due to its intensity and potential for severe weather phenomena. It is defined by the National Weather Service (NWS) in the United States as a thunderstorm that meets certain criteria based on wind speed, hail size, and the potential for tornado development.

To be classified as severe, a thunderstorm must meet one or more of the following criteria:

Producing hail of at least 1 inch (2.5 centimeters) in diameter or larger.
Generating wind gusts of 58 miles per hour (93 kilometers per hour) or stronger.
Spawning tornadoes.
Severe thunderstorms can exhibit intense updrafts and downdrafts, resulting in strong winds, heavy rainfall, frequent lightning, and the potential for large hail. They can also produce tornadoes, although not all severe thunderstorms develop tornadoes.

These storms can cause significant damage to structures, trees, and power lines, leading to power outages and hazardous conditions. Flooding from heavy rainfall and dangerous cloud-to-ground lightning are also associated risks. The NWS issues severe thunderstorm warnings to alert the public when a severe thunderstorm has been detected or is imminent in a specific area.

Severe thunderstorms are a common weather hazard in many regions around the world and are closely monitored by meteorologists to provide timely warnings and keep the public safe.