I also wonder if some of the spraying operations are cloud seeding, the oncoming storm catches the particles and wala.........Tornado's and massive storms over the mid west and south.
Videos made recently by YouTube user Dutchsince show rings appearing on Intellicast interactive weather maps of the US and then in the following 24-48 days, there is bad weather where the rings were.
He believes the rings are caused by HAARP. Refer: http://chemtrailsnorthnz.wordpress.com/2011/05/02/dutchsince-st-louis-mo-springfield-chicago-illinois-48-hour-forecast-correct/
It may be that HAARP or a related technology may be being used to create massive storms. Barium is mentioned on the HAARP patent, and evidence shows that it is being put into the atmosphere using chemtrails. Scientist Clifford Carnicom has documented the gradual change of the planetís atmosphere into a plasma. This plasma, which includes barium, can be used with HAARP technology. Official documents show that this type of technology, which is based on Nikola Teslaís and Bernard Eastlundís work, may be employed to cause earthquakes and drastically modify the weather, amongst a range of other potential functions.
Dane Wigington noted that when the metal count went up (more chemtrails), the rainfall levels went down.
Also, Clifford Carnicom stated:
"Recent analysis leads to the conclusion that the extensive and systematic aerosol operations that are being conducted without informed consent are aggravating, if not instigating, the elevated drought conditions that are now commonly being observed." - Clifford Carnicom in his 2002 article entitled: 'Drought Inducement.' See: Carnicom.com
Weatherman Scott Stevens, who set up webcams and time lapse software to record what they are doing, said that they work with what is coming. There is a very good interview with George Noory with him here. He also said that they are creating drought: http://chemtrailsnorthnz.wordpress.com/2010/11/08/weatherman-scott-stevens-talks-to-george-noory-about-geoengineeringchemtrails/