The legacy vertical temperature profile product estimates levels of temperature throughout the troposphere. This product is a continuation of the operational sounder product available on the previous GOES satellites. This product is used by National Weather Service field forecasters and in numerical weather prediction models, providing information regarding the vertical temperature structure of the atmosphere. The vertical temperature structure information provided by this product is important for severe weather prediction as it is used to compute a number of atmospheric stability parameters which provide guidance to weather forecasters on the stability of the atmosphere.