A lower dew point depression indicates that the air is more moist at a given temperature.
[1]: 83 For a constant temperature, the smaller the difference, the more moisture there is, and the higher the relative humidity.
LCL height is an important factor modulating severe thunderstorms.
Conversely, instability is increased when there is a mid-level dry layer (large dew point depression) known as a "dry punch", which is favorable for convection if the lower layer is buoyant.
[citation needed] As it measures moisture content in the atmosphere, the dew point depression is also an important indicator in agricultural and forest meteorology, particularly in predicting wildfires.