Even though Thailand had gone to great lengths to solve water shortages by developing all kinds of existing water resources, they were known to be insufficient to meet the demands of the Thai population. Over 82 per cent of agricultural lands still had to rely on rainwater. His Majesty thought certain measures should be taken before the problems got out of hand. His Majesty thus consulted with M.L. Dej Sanitwongse in 1956 about which techniques or scientific methods could best be used to modify the weather so that clouds would form and precipitate rainfall in targeted areas. His Majesty’s royal initiative was implemented with the cooperation of three royal relatives: M.L. Dej Sanitwongse, H.H. Prince Chakrabandh Pensiri and M.R. Debriddhi Devakul. They studied and applied the rainmaking techniques of other countries with Thailand’s climate. Royal rainmaking or artificial rain was thus the product of academic research in countries such as the United States, Australia and Israel, along with the royal advice of His Majesty the King. In the meantime, the Office of Rainmaking Operations was established. During the first phase, there was very little information or evidence to confirm results, and the academic credibility remained low since Thailand had no expertise in weather modification. His Majesty the King was the one who followed up on progress and planned the experiments by closely studying reports from each operation.