Movement
Fronts are generally guided by winds aloft, but do not move as quickly. Cold fronts and occluded fronts in the Northern Hemisphere usually travel from the northwest to southeast, while warm fronts move more poleward with time. In the Northern Hemisphere a warm front moves from southwest to northeast. In the Southern Hemisphere, the reverse is true; a cold front usually moves from southwest to northeast, and a warm front moves from northwest to southeast. Movement is largely caused by the pressure gradient force (horizontal differences in atmospheric pressure) and the Coriolis effect, which is caused by Earth's spinning about its axis. Frontal zones can be slowed down by geographic features like mountains and large bodies of warm water.
Read more about this topic: Weather Front
Famous quotes containing the word movement:
“Later
Some movement is reversed and the urgent masks
Speed toward a totally unexpected end
Like clocks out of control.”
—John Ashbery (b. 1927)
“I am a writer and a feminist, and the two seem to be constantly in conflict.... ever since I became loosely involved with it, it has seemed to me one of the recurring ironies of this movement that there is no way to tell the truth about it without, in some small way, seeming to hurt it.”
—Nora Ephron (b. 1941)
“What new thoughts are suggested by seeing a face of country quite familiar, in the rapid movement of the rail-road car!”
—Ralph Waldo Emerson (1803–1882)