Hook echo facts for kids
A hook echo on the radar image of the May 3, 1999 supercell thunderstorm that produced an F5 tornado in Moore, Oklahoma.
A hook echo is a hook shape seen on a weather radar of some supercell thunderstorms. It is produced by rain, hail, or even debris wrapping around the thunderstorm. A hook echo is a sign that a tornado has formed or is forming. If a hook echo is seen on radar, the National Weather Service may issue a tornado warning.
Images for kids
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A Doppler on Wheels image of a tornadic thunderstorm near La Grange, Wyoming (USA) captured during the VORTEX2 project. In the velocity image on the left, Blues/green represent winds moving towards the radar, and reds/yellows indicate winds moving away from the radar. In the reflectivity image on the right, the main body of the storm can be seen, with the appendage on the bottom of the storm being a hook echo.
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Hook echo Facts for Kids. Kiddle Encyclopedia.