Earthquake lights are reported flashes, glows, or streamers seen near some earthquakes. Reports are rare and often difficult to verify. Researchers have proposed electrical processes in stressed rock and other natural explanations, but no single mechanism explains every report. The lights cannot be used to predict earthquakes.
A report is not a reliable warning
Witnesses have described flashes, balls of light, or glows around earthquakes. These events are brief and may be confused with lightning, power failures, or other lights. USGS documents earthquake lights as a reported phenomenon, not a dependable precursor. [1]
What explanations have been proposed?
One research line proposes that stress in certain rocks may activate electric charge carriers. If charges reach the surface, they could produce discharges in the air. Other reports may have different explanations or be unrelated to earthquakes. A proposed mechanism for some cases is not proof that every report shares it. [2]
Can earthquake lights predict an earthquake?
No. They are not an established forecast signal. Earthquake prediction would require reliable information about where, when, and how large an event will be. Use official preparedness guidance rather than interpreting lights as a warning. For a distinct atmospheric phenomenon, see blue jets and red sprites.
Frequently asked questions
Frequently asked questions
Are earthquake lights proven?
Some reports are documented, but individual observations and proposed causes remain uncertain.
Can lights be seen before an earthquake?
Some reports claim this, but they are not a reliable predictor.
Could lightning or a power line be mistaken for them?
Yes. Ordinary lightning, electrical faults, or fires can resemble reported lights.
Sources and evidence
- USGS — What Are Earthquake Lights? ↗
Defines reported forms and their association with some earthquakes.
- USGS — Earthquake Lights and Stress-Activated Charge Carriers ↗
Presents one proposed electrical mechanism.
- USGS — Haunted Summerville: Ghostly Lights or Earthquake Lights? ↗
Reviews a reported case and natural explanations.
Sources consulted: 2026-10-18. Written with AI assistance and checked against the linked references; not independently reviewed by a subject specialist. Sources do not endorse this article. See our editorial policy.
Revision: Initial editorial draft prepared 18 October 2026; claims are tied to linked sources and retain stated limitations.