a strong cyclone with strong northeast winds ahead of a warm front will get lighter as a warm front draws near and even calm as the warm fron is right on top of the location. then as the warm front passes theris a shift to the south or southwest gradually increasing to the forecast speed.
2007-09-20 02:34:44 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Weather
The warm front typically lies in a trough of low pressure, thus near the front the surface pressure gradient decreases, thus the surface wind decreases. As you move away from the trough, the surface pressure gradient increases again, and likewise the wind. Visualize it like a valley between two mountain ranges. The wind is typically strongest where the slope is steepest.
2007-09-20 03:01:41 · answer #1 · answered by cyswxman 7 · 0⤊ 0⤋
I dont know whether your statement is correct or not.If it is correct, then the reason may be the following.When warm front approaches, convection currents might have been set up near the surface and this vertically rising air may disturb the horizontal flow of air at that place.
2007-09-21 08:23:01 · answer #2 · answered by Arasan 7 · 0⤊ 0⤋