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 Fronts
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)
“... contemporary black women felt they were asked to choose between a black movement that primarily served the interests of black male patriarchs and a women’s movement which primarily served the interests of racist white women.”
—bell hooks (b. c. 1955)
“Women who assume authority are unnatural. Unnatural women are lesbians. Therefore all the leaders of the women’s movement were presumed to be lesbians.”
—Jane O’Reilly, U.S. feminist and humorist. The Girl I Left Behind, ch. 8 (1980)