9 October 2018

99 Percent Invisible: Making It Rain

This was the beginning of a top secret military project called Operation Popeye. The goal was to actually create more rain in Southeast Asia by artificially extending and intensifying the naturally occurring monsoon season (which ran from April to October) by a month on either side.

Humans — especially military humans — have wanted to control the weather for a long time. Some rainmaking ceremonies have ancient roots. “It goes back to traditional rainmaking ceremonies,” explains historian Jim Fleming. “Turns out that if you do a rain dance for up to two weeks it’ll probably rain and then you can take credit for that.”

Fleming says that in the 19th century — after the Civil War — a theory began to develop that major military operations were somehow disrupting the clouds and causing big rain storms. So in the 1890s, the federal government actually simulated battle activity in Texas during a drought. They fired off cannons and created explosions. “The locals loved it,” explains Fleming. “They loved to go out on the hillside and watch the cannonading, but it was during the monsoon season. So there was a really good chance it was going to rain anyway.”

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