As the jet stream migrates northward, the activity centroid shifts into Texas, Oklahoma, Kansas, and Arkansas, the classic "Tornado Alley" core. April is typically when the year's most violent outbreaks concentrate, since this is when Gulf moisture, Plains instability, and strong jet-driven shear are all simultaneously at their most favorable overlap.
Where is Tornado Alley?
G.R.C.
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The classic Tornado Alley core is Texas, Oklahoma, Kansas and Arkansas, where April brings the most violent outbreaks.
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