Electromagnetic pulse attack on Hawaii would devastate the state

North Korea warns of pre-emptive strike against the US

On July 9, 1962, Hawaii was hit by a massive electromagnetic pulse (EMP) attack, which within minutes took down the state’s communications systems and traffic lights — virtually everything that ran on electricity.

The EMP wasn’t an attack by a foreign government; rather the U.S. government had set off a 1.4-megaton nuclear warhead at a height of 248 miles above Johnston Atoll in an operation the military named “Starfish Prime.” The test caused radio disruptions in Hawaii, California, and Alaska, and knocked out six satellites above the Pacific.

Source: Electromagnetic pulse attack on Hawaii would devastate the state

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