What Is A Warm Front?

Tools

By By Steve Pool

SEATTLE - As we mentioned in March 5th's column, a front is a boundary between warm air and cold air. With a warm front, you have an area of warm air moving in over colder air. You can pick them out on weather maps as red line with red semi-circles.

Since warm air is lighter than cold air, the warm air will ride over the top of the colder air, where it will cool, condense, and squeeze out moisture.

Warm fronts are generally weak weather-makers, bringing in a steady light rain or drizzle. It can also create fog as the warm air condenses as it meets up with the colder surface air. Since cold air is heavy and tough to budge, warm fronts can be slow-movers, keeping the rains around for dozens of hours.

For More Information:

www.usatoday.com.

Your Photos

YouNews Tuesday evening clouds Tuesday evening clouds
These photos were taken Tuesday evening between 8:30pm and 9pm with a Nikon D3000 DSLR and a 50-200mm telephoto lens.
YouNews The Fire God of Winthrop, WA The Fire God of Winthrop, WA
Picture taken by friend Rocky Fletcher before the Rhythm and Blues festival started. Smoke from the Carlton Complex Fire on Thurs July 17.