I have monitored a static meter at a Minute Man Missile site and observed charges build as small clouds formed in a blue sky on a calm day. There can be only one answer. Ninety percent of cloud to ground strikes are negative cloud to positive ground. Just as it should be if condensing water frees electrons. When Dr. David Rust and his team sent a probe into the anvil of a thunder head they had a big surprise.
Current theory says that the upper levels of a thunder cell are positive.
Instead of recording only high positive charges as they had supposed the probe recorded unexpectedly, a large area of high negative charge in the anvil. NASA recently established that there is a direct ratio between the volume of rain produced in a storm and the amount of lightning it produces. This is exactly what my postulate predicts. Dissipating storms are usually evaporating and evaporation produces the positive charges that result in a positive lightning strike. While observing a large thunder storm as it passed over the top of the Wasatch mountain range and continued bombarding the Morgan Valley on the other side of the mountains we were treated to a spectacular sight.