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Feb 11, 2009
Eight people are dead after tornadoes swirled through Oklahoma yesterday. The twisters touched down in at least three cities: Lone Grove, Edmond and nearby Oklahoma City. Fourteen people were seriously injured in Lone Grove, the worst-hit city, where all the fatalities occurred.
Tornadoes are common in Oklahoma, but more so in the spring, National Weather Service meteorologist Rick Smith told the Associated Press. Here's why, according to a ScientificAmerican.com Ask the Experts column from 2005 on why Kansas, Texas, and Oklahoma get more twisters: Tornadoes form when warm, moist air near the ground collides with dry air higher up. When the winds over the central plains bring these two temperature and moisture patterns together, tornadoes can occur.
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