Earthquake · reviewed by a seismologist
M 5.0mb
South Sandwich Islands region
- When
- Magnitude
- M 5.0 (mb)
- Depth
- 104 km below the surface
- Felt
- no reports yet
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 1 hour ago
This was a moderate earthquake. Shaking at this size can damage poorly built structures close to the epicentre.
How big was it?
This earthquake released about 480 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 6.0 would have released about 32 times as much.
- Northridge, California 1994 M 6.7 350× the energy of this one
- Mineral, Virginia 2011 M 5.8 16× the energy of this one
- Magna, Utah 2020 M 5.7 11× the energy of this one
- This earthquake M 5.0 about 480 tons of TNT
- Around the size people start to feel M 3.0 this one released 1,000× 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.
Revisions
USGS refines a solution as more stations report. Every change we have seen is listed here.
| What changed | From | To | When |
|---|---|---|---|
| longitude | -25.94 | -25.89 | |
| latitude | -59.14 | -59.06 | |
| depth | 87.66 | 103.84 |
Where
Epicentre -59.0586, -25.8945. Map © OpenStreetMap contributors.
Aftershocks so far
No further earthquakes have 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.
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.