Thursday, December 25, 2014

Stationary Front

We've learned that a cold front is a bunch of cold air moving along, a warm front is a bunch of warm air moving along, and an occluded front is when one type of front catches up to another one and takes it over.

Sometimes cold and warm fronts crash into each other, but neither of them is strong enough to take over the other one.
So they just sort of mix together and sometimes make some interesting weather.

Since both fronts are fighting against each other but neither are moving much, this is called a stationary front.
The word stationary means not moving.

Many times because there is warm air up high being held up for a while, a stationary front can be the sign of rain or snow storms that last a long time.

On a weather map the stationary front is the red half circle picture for a warm front on one side of a line, and the blue triangle picture for a cold front on the other side of the line.

(from: wikipedia - stationary front)

Kid Facts - Blast from the past: Lava Channel