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 Sunday Images Sunday Images
These images were taken Sunday, December 14 with a Nikon D3100 and an Explore Scientific ED127 (Moon) and ED80 (M42
and M31).
YouNews Weekend Sky Weekend Sky
The images of M42 (Orion) and M31 (Andromeda) are short
stacks (lights only) taken Sunday evening with an Explore
Scientific ED80 (wide angle) telescope and a Nikon D3100 DSLR. The image of the moon was taken with an Explore Scientific ED127 (5-inch) refractor.