Late PM of May 15, 2013 — we saw a large RADAR pulse out of the Natchitoches, LA area.
seen in this video starting at 4min:
Move forward approximately 16 hours, and we see a tornado warning issued at the pulsed areas epicenter.
Here are several posts explaining the basics behind the theory of radio frequency modification of the weather, more specifically an explanation on how I believe RADAR is playing a role :
Past RADAR pulse / HAARP ring / Scalar Square confirmations :