The Royal Rainmaking Project was initiated in November 1955 by King Bhumibol Adulyadej. Thai farmers repeatedly suffered the effects of drought. The king resolved to do something about this by proposing a solution to the dearth of rain artificial rainmaking, or cloud seeding. HM The King discovered that many areas faced the problem of drought. Over 82 percent of Thai agricultural land was affected by the lack of water.
The royal rainmaking project debuted on 20th July 1969 at his behest, when the first rainmaking attempt was made at Khao Yai National Park. Dry ice flakes were scattered over clouds. Reportedly, some rainfall resulted and in 1971, the government established the Artificial Rainmaking Research and Development Project within the Thai Ministry of Agriculture and Cooperatives. To show remembrance the Cabinet resolved to commemorate His Majesty King Bhumibol Adulyadej with November 14th being declared ‘Father of Royal Rainmaking Day’.