M 7.4 earthquake – 8 km ENE of Santiago Xanica, Mexico
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Local time: Mar 21, 1928 · 22:17 (UTC-6)
MajorShallow · 15 km
Reviewed by a seismologist
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- Magnitude
- 7.4moment magnitude (mw)
- Depth
- 15 kmShallow earthquake
- Epicenter
- 16.037, -96.15530 km from Crucecita
- Energy released
- 1.9 megatons of TNTabout 127 × Hiroshima
- Felt reports
- —"Did You Feel It?" responses
- Shaking intensity
- 7.1max. instrumental (MMI)
- Aftershocks
- 0M2.5+ within 127 km
- Significance
- 852USGS score, 0–1,000+
The strongest here since 1907
The last earthquake at least as strong within 300 km struck on Apr 15, 1907.
How strong was it?
Major earthquake. It released 1.9 megatons of TNT, 3,981 times the energy of a magnitude 5.0. Bars use the magnitude scale: every step is about 32 times more energy.
The strongest earthquakes within 300 km
Since 1900, around Mexico.
- 8.2 2017 Tehuantepec, Mexico Earthquake Sep 8, 2017
- 8.0 15 km ESE of San Gabriel Mixtepec, Mexico Jun 17, 1928
- 7.8 2 km NW of Teojomulco, Mexico Apr 15, 1907
- 7.7 2 km ESE of San Agustín Loxicha, Mexico Nov 29, 1978
- 7.6 5 km SSW of San Miguel Suchixtepec, Mexico Jan 15, 1931
- 7.5 6 km WSW of San Miguel Panixtlahuaca, Mexico Oct 9, 1928
- 7.5 15 km W of San Baltazar Loxicha, Mexico Sep 30, 1999
- 7.4 9 km SE of Santa María Xadani, Mexico Jun 23, 2020