Tornadon't

The Tornadon't dispels tornadoes by altering the charge of their particles. The downside is that the canister must be dropped into the tornado so it can explode, requiring some poor sap to fly very close to the tornado.

"Changes"
Having invented the Tornadon't, Doc Greene had to wait for an opportune time to test it. That moment came when a tornado bore down on Griffin Rock, and with the help of Blades and Dani Burns, Doc Greene was able to drop the Tornadon't into the storm. It exploded, green energy expelled into the tornado, and the whole thing simply stopped. Test successful!