Earthquake · reviewed by a seismologist
M 7.0mww
191 km ENE of Nagqu, China
Yes. A magnitude 7.0 earthquake was recorded 191 km ENE of Nagqu, China at 14:33 UTC on 2026-10-22, 18 km deep. No felt reports to USGS yet.
- When
- Magnitude
- M 7.0 (mww)
- Depth
- 18 km below the surface
- Felt
- no reports yet
- Measured shaking
- intensity VIII (ShakeMap)
- USGS impact alert
- pending
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 2 hours ago
This was a major earthquake. Serious damage is likely near the epicentre. Follow official information from USGS and local authorities.
At this magnitude and depth, people at rest would likely notice it out to about 584 km (363 mi) from the epicentre. Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.
How big was it?
This earthquake released about 480 kilotons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 8.0 would have released about 32 times as much.
- Tōhoku, Japan 2011 M 9.1 1,400× the energy of this one
- San Francisco 1906 M 7.9 22× the energy of this one
- Ridgecrest, California 2019 M 7.1 1.4× the energy of this one
- This earthquake M 7.0 about 480 kilotons of TNT
- Loma Prieta, California 1989 M 6.9 this one released 1.4× more
- Northridge, California 1994 M 6.7 this one released 2.8× more
Energy from the Gutenberg–Richter relation (log10E = 1.5M + 4.8), rounded to two figures; bar length is magnitude, which is already a logarithm of energy. Magnitudes of past earthquakes from the USGS catalogue.
Where
Epicentre 32.3805, 93.7797. Map © OpenStreetMap contributors.
Aftershocks so far
1 earthquake has been recorded within 50 km since this one.
Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of . QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.
Revisions
USGS refines a solution as more stations report. Every change we have seen is listed here.
| What changed | From | To | When |
|---|---|---|---|
| impact alert | orange | pending | |
| measured intensity | 8.06 | 8.01 | |
| location | 183 km ENE of Nagqu, China | 191 km ENE of Nagqu, China | |
| longitude | 93.71 | 93.78 | |
| latitude | 32.34 | 32.38 | |
| depth | 10 | 18 | |
| impact alert | pending | orange | |
| impact alert | not reported | pending | |
| measured intensity | not reported | 8.06 |
On USGS
- The official USGS event page — the source of record for every value above
- Did you feel it? Report it to USGS — reports go to USGS, not to us
- ShakeMap for this event, when USGS has produced one
QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.