A heat burst event occurred in Iowa on Sunday morning with the classic signature of having the temperature rapidly rise and dew point fall at the same time along with an increase in speed. The featured chart shows the heat burst event at the KCCI-TV schoolnet site in Farnhamville (near Fort Dodge). Please note that the 92 mph wind gust reported at the site is probably due to the sensors high location on top of a building. The wind sensor is not at a standard 30 foot and unobstructed height. These events are caused by rapidly decaying storms that drive a layer of warm air to the surface that warms even more thanks to the ideal gas law (increase in pressure leading to increase in temperature).

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Tags:   heatburst