Tangshan earthquake lights

Survivors of the 28 July 1976 Tangshan earthquake described glowing skies and flashes of light just before the shock.

1976 CE · 39.63, 118.18 · status: account

The sceptical view

Earthquake lights are a reported but poorly understood phenomenon; some accounts may describe electrical arcing from damaged power lines.

Sources

1. Wikipedia: 1976 Tangshan earthquake
2. Wikipedia: Earthquake light