21. "There's no pattern showing anything that could be called a tornado alley in the Southeast," 22. Norman lies within Tornado Alley , a geographic region where tornadic activity is particularly frequent and intense. 23. Tornado Alley covers the northern section of Texas.24. Portions of the southern border have been nearly as vulnerable historically as parts of Tornado Alley . 25. Tornado alley is a fortuity of geography, lying within the reach of three key air masses.26. Together, these regions make up the northernmost border of the U . S . Tornado Alley . 27. Farming is a risky business in a stormy area of the Great Plains known as Tornado Alley . 28. Tornado alley : Local channels blanket Fort Worth to report on a severe twister that batters downtown.29. And " tornado alley , " which stretches north across the Plains, gets the lion's share of twisters. 30. Norman lies within Tornado Alley , the region of the United States where tornadic activity is most frequent.
