Approximately 100am CT — June 16, 2013 — a long duration RADAR pulse out of Central Illinois (ILX) NEXRAD produced MULTIPLE actual storm returns.
seen in this video here (watch in HD fullscreen to see details)
back dated NEXRAD for central Illinois here (to see the actual pulse as it occurred):
The RADAR pulses are showing up on RADAR as , AND are designated by the computer as possible tornadoes, damaging winds, strong cell thunderstorms along with hail.
This pulse from central Illinois, producing a storm return, is another example of Radio Frequency heating having a PHYSICAL EFFECT on the weather.
Curious how Radio Frequency can manipulate the weather?
Here is a good place to start learning :