High Quality Content by WIKIPEDIA articles! The February 2009 tornado outbreak primarily affected portions of the South Central United States on February 10, as well as sections of the Northeastern United States, on February 11. During the two-day period, 15 tornadoes touched down in seven states. Oklahoma was struck by six tornadoes, the most of any state. The first day of the outbreak produced the most tornadoes; the second brought mainly high wind damage and rain or snow in most of the Northeast.