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A tornado warning is issued when a tornado has been visually spotted or detected on weather radar. The prediction of tornadoes involves identifying conditions favorable for strong thunderstorms, which require cool, dry air above moist, unstable air near the surface. A veering wind profile and strong high-altitude winds are also necessary to create the spin that can lead to a tornado. Modern Doppler radars can detect rotation within thunderstorms, allowing forecasters to issue warnings, often with several hours' notice. The primary dangers from tornadoes are high winds and flying debris, which can cause significant damage and fatalities. Safety measures include seeking shelter in sturdy buildings, preferably in basements, and avoiding mobile homes and vehicles.1234

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