Live HARRISBURG, SOUTH DAKOTA, US Weather Conditions

Hook Echo - A radar pattern sometimes observed in the southwest quadrant of a tornadic thunderstorm. Appearing like a fishhook turned in toward the east, the hook echo is precipitation aloft around the periphery of a rotating column of air 2-10 miles in diameter.

Live HARRISBURG, SOUTH DAKOTA, US Weather Conditions from Weather Station MSHBS2

Spray - An ensemble of water droplets torn by the wind from an extensive body of water, generally from the crests of waves, and carried up into the air in such quantities that it reduces the horizontal visibility.

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