During the spring and summer months as our days begin to get warmer and drier, you may hear the term "virga showers." But many ask, what does that mean? Here's an explainer of the term and how they form. Related: KOAT 7 Weather SchoolVirga is another term for evaporating showers. Evaporating showers is a type of precipitation that falls from a rain cloud but never makes it to the ground. These types of storms form when the air below the cloud is very dry, and when precipitation falls, it evaporates when it reaches that dry air. What's left then these showers form are streaks in the sky that extend from the cloud's base. This creates a visual effect of where you can see the path precipitation took before becoming water vapor once again. When these showers fall, the evaporation process can use lot of the energy in the surrounding air. This causes the air to cool. When that air cools, the cold air can sink quickly to the surface, and dump an isolated pocket of water, hail and air, causing strong winds. These storms are called microbursts. These showers usually show up on weather radar, but it takes ground observations to identify whether or not these showers fall to the ground. The National Weather Service contributed to this article.