What type of weather do warm fronts bring?
1 Answer
Warm fronts typically bring rain.
Explanation:
Warm fronts are boundaries to a trough of a warm air system. In other words they are the very first part of a warm air mass.
Let's quickly take a look at why warm fronts typically bring rain.
Warm air has the ability to contain more moisture than colder air, this means that a warm air mass often has a higher humidity than a cold air mass (this is why summers tend to be hot and humid and winters tend to be cold and dry).
A low pressure system, a system that has lower pressure in it's center than in the areas around it, creates wind that causes warm moist air to rise, as the air rises it cools, the cool air becomes saturated with water vapor causing the vapor to condense forming clouds.
Warm air masses in the northern hemisphere move from the southwest to the northeast while cold air masses move from the northeast to the southwest. When a warm air mass "collides" with a cold air mass moving in the opposite direction the warm air mass is pushed above the cold air mass and the water vapor suspended in the clouds (of the warm air) condense even further resulting in rain. To make things a little easier to understand here's a pictorial depiction:
1. A Low Pressure System with moist air forms clouds
Image Courtesy: Steven Siems; Obtained from: http://www.abc.net.au/science/articles/2013/01/31/3679358.htm; Reused under: fair use
2. Warm Air Mass meets Cold Air Mass
Image Courtesy: Kimberly Mancuso, Lamar County School District; Obtained from: http://www.lamarcountyschools.org/Page/18875; Reused under: fair use
3. Rain!
Image Courtesy: user3449173 (StackExchange user); Obtained from: http://physics.stackexchange.com/questions/203576/why-can-we-see-through-rain; Reused under: Public Domain
I know this is a lot of information but I hope it helps!
