Definition: A dew point front is a type of boundary between air with differing characteristics. A dew point front is not one of the 4 types of fronts. Instead, a dew point front can form when two warm air masses with differing moisture content meet. Large differences in dew point temperatures create this type of atmospheric boundary.
De point fronts are often responsible for the creation of very severe thunderstorms in the Great Plains and in the warmer southwest. Warm and moist air from the Gulf of Mexico will meet up with warm and dry air from the desert southwest.
Commonly, these frontal boundaries progress eastward lifting the moist air from the Gulf of Mexico. The lifting of warm moist air can create the development severe thunderstorms and supercell tornadoes.
Resources:
A lesson on determining the difference between a dryline and a front
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Also Known As: dryline, dry line