2007-03-22 13:20:51 · 7 answers · asked by Daron 1 in Science & Mathematics ➔ Weather
A mass of warm, tropical air coming into contact with a mass of cooler, drier air from the north. Where two masses like that come together, storms usually occur and tornadoes can happen. This happens in the US most often in the great plains area.
2007-03-22 13:25:02 · answer #1 · answered by megz116 2 · 2⤊ 0⤋
Geography is the most significant contributing factor. The Rockies provide dry air as it decends from the peaks and adiabatically warms, the Gulf of Mexico provides warm, moist air that circulates into the center of North America around the sub-tropical high, and Canada provides a dry, cold airmass that migrates down from the north. Tornadoes most often occur with frontal systems as the cold Canadian air meets the warm Gulf air, sparking cyclogenesis. However some of the strongest tornadoes occur along what is called the dry-line. This is the interaction of the dry Rockies air with the moist Gulf air. There isn't a huge temperature difference, but the moisture difference makes the atmosphere extremely unstable. You most often see the dry-line in Texas and Oklahoma, which helps give then the largest concentration of tornadic activity.
2007-03-23 05:05:54 · answer #2 · answered by weathermanpeter 2 · 3⤊ 0⤋
the different air jet streams
such as hot and cold air
mixing causing
temperatures to rise
and fall quickly
producing storms
which can produce super cells
which then can produce tornadoes
2007-03-22 22:30:20 · answer #3 · answered by Hottielips13 1 · 0⤊ 0⤋
Geography.
2007-03-22 20:23:47 · answer #4 · answered by Anonymous · 3⤊ 1⤋
Al Gore and his mouth when it collides with a cold front.
2007-03-22 23:03:36 · answer #5 · answered by Anonymous · 1⤊ 1⤋
the constant flow of heat into a cold area.
2007-03-24 04:30:06 · answer #6 · answered by jsf19872005 2 · 0⤊ 2⤋
White trash mobile homes--they just suck 'em in .Those things are fraggin' tornado magnets.
2007-03-22 20:33:45 · answer #7 · answered by K H 4 · 0⤊ 7⤋