M 8.0 earthquake – 1985 Michoacan, Mexico Earthquake
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Local time: Sep 19, 1985 · 07:17 (UTC-6)
GreatShallow · 28 km
Reviewed by a seismologist
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- Magnitude
- 8.0moment magnitude (mw)
- Depth
- 28 kmShallow earthquake
- Epicenter
- 18.190, -102.53339 km from La Orilla
- Energy released
- 15 megatons of TNTabout 1,005 × Hiroshima
- Felt reports
- —"Did You Feel It?" responses
- Shaking intensity
- 7.2max. instrumental (MMI)
- Aftershocks
- 15M2.5+ within 286 km, up to 60 days
- Significance
- 985USGS score, 0–1,000+
The strongest here since 1932
The last earthquake at least as strong within 300 km struck on Jun 3, 1932.
How strong was it?
Great earthquake. It released 15 megatons of TNT, 31,623 times the energy of a magnitude 5.0. Bars use the magnitude scale: every step is about 32 times more energy.
Aftershocks
15 earthquakes of M2.5+ within 286 km in the 60 days after.
- 4.8 6 km SW of El Habillal, Mexico Sep 19, 1985
- 5.0 16 km ENE of Pantla, Mexico Sep 19, 1985
- 4.7 8 km S of Ixtapa-Zihuatanejo, Mexico Sep 20, 1985
- 4.5 13 km S of Ixtapa-Zihuatanejo, Mexico Sep 20, 1985
- 4.9 33 km W of El Habillal, Mexico Sep 20, 1985
- 7.6 7 km N of Pantla, Mexico Sep 21, 1985
- 4.5 35 km SSW of Palos Blancos, Mexico Sep 23, 1985
- 4.5 12 km WNW of La Unión, Mexico Sep 24, 1985
- 4.5 15 km S of Playa Azul, Mexico Sep 24, 1985
- 5.7 44 km WNW of El Habillal, Mexico Sep 25, 1985
The strongest earthquakes within 300 km
Since 1900, around Mexico.
- 8.1 1932 Jalisco, Mexico Earthquake Jun 3, 1932
- 8.0 1995 Colima-Jalisco, Mexico Earthquake Oct 9, 1995
- 7.8 7 km E of Los Tepames, Mexico Jun 18, 1932
- 7.7 12 km NNE of La Central, Mexico Jun 22, 1932
- 7.6 35 km SSW of Aguililla, Mexico Sep 19, 2022
- 7.6 16 km SSW of Cuyutlán, Mexico Jan 22, 2003
- 7.6 7 km N of Pantla, Mexico Sep 21, 1985
- 7.6 12 km SSE of Vallecitos de Zaragoza, Mexico Mar 14, 1979