What is Dew Point?

The dew point is the temperature at which the air becomes fully saturated with water vapor. When the temperature drops to the dew point, moisture in the air condenses into liquid water, forming dew, fog, or frost. The dew point is a critical factor in understanding humidity, weather patterns, and storm formation.

In weather forecasting, the dew point helps meteorologists predict severe weather events such as thunderstorms and tornadoes. A higher dew point indicates more moisture in the atmosphere, which can fuel the development of severe storms. For example, when the dew point exceeds 60°F, conditions may become favorable for tornado formation, particularly in Tornado Alley.

Understanding the dew point is also essential when considering storm shelter placement. High humidity and moisture levels can cause condensation in underground storm shelters. Proper ventilation systems and moisture-resistant materials can help mitigate these effects, ensuring a safe and dry environment during severe weather events.

For homeowners and businesses, monitoring the dew point can provide insights into potential weather-related hazards, helping them stay prepared and protected when severe weather strikes.