What is upper-level divergence and its role in severe weather?

A tornado is a relatively small-diameter column of violently rotating air developed within a convective cloud that is in contact with the ground Tornado Tracking. Forecast basics. Identifying and understanding ingredients. Search for boundaries and gradients. Looking for what could go wrong. The version used today—the Enhanced Fujita Scale—ranges from EF0 tornadoes with winds of 65 to 85 miles an hour, to EF5 tornadoes with winds exceeding 200 miles ... A Tornado Risk Index score and rating represent a community's relative risk for Tornados when compared to the rest of the United States. During his studies, Aburto witnessed the unique courtship behavior of the bigeye trevally. He saw that large groups of the fish swim quickly together and around ... What is a tornado and what causes it? A tornado or twister is a narrow, violently rotating column of air. It is usually attached to the base of a thunderstorm, ... A severe thunderstorm warning can be upgraded to a tornado warning should conditions warrant. Warnings for tornadoes and severe thunderstorms are issued based ... Tornadoes. Every driver of a school bus should have some basic knowledge of tornado information and the precautionary measures to take when a warning or a ... Dec 10, 2024 ... There is little you can do to protect your home or workplace from the strength of tornado winds, but there are actions you can take to protect yourself and ... All sirens are tested at noon on the first Saturday of each month and silently tested daily internally by the system itself. Other than tests, the sirens are ...