The Radio Jove system picked up lightning strikes very clearly on 20.1 MHz during the storm that passed through Colorado Springs on 29 May 2016, as evidenced by Figure 1. The second jpeg, Figure 2, is zoomed-in showing what lighting looks like on the strip chart.
As you can see, it is important to recognize if your radio telescope is detecting Jupiter or lightning.
Figure 1. Radio Jove data record of 5-29-16
Figure 2. Detail of Lighting data 5-29-16
Dr. Rich Russel