The featured time trace is taken from one of the KELO-TV WeatherNet stations in Sioux Falls on Sunday morning. The rapid and temporary rise in temperature and drop in dew point is a classic signature. These events are often caused by rapidly decaying thunderstorms producing a downward rush of air that warms as the pressure increases. This air hits the ground and spreads out over a limited area producing high winds with hot and dry conditions.

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Tags:   heatburst