Reviewed by USGSMexico95y ago
M6.8 earthquake 2 km SW of Tecomán, Mexico
Monday, July 25, 1932, 09:12:51 UTC · 18.897°N, 103.897°W
A magnitude 6.8 earthquake struck 2 km SW of Tecomán, Mexico on Monday, July 25, 1932, 09:12:51 UTC, at a depth of 20.0 km (shallow). It is the strongest earthquake within 300 km since an M7.7 on June 22, 1932.
- Magnitude
- 6.8
- Strong · mw
- Depth
- 20 km
- Shallow
- Felt reports
- 0
- Did You Feel It?
- Est. shaking
- VII
- Very strong (ShakeMap)
- PAGER alert
- None
- Not issued
- Tsunami
- No flag
- USGS feed
Outlined circle: this earthquakeColoured lines: estimated shaking intensity (USGS ShakeMap)
In context
How big was it, and why here?
Energy released
256 kilotons of TNT
That is about 17 times the Hiroshima bomb. It released about 537 times the energy of a magnitude 5.0.
Tectonic setting
89 km
from the nearest mapped plate boundary, between the Cocos and North American plates. Earthquakes cluster along boundaries like this one, where plates collide, pull apart or slide past each other.
Depth: shallow
20 km
Shallow earthquakes (under 70 km) produce the strongest surface shaking for their size, so they are the ones most likely to cause damage near the epicenter.
Did You Feel It?
Where it was felt
No “Did You Feel It?” reports have been published for this event yet. If you felt it, you can add your report on the USGS website.
I felt it — report to USGS ↗USGS PAGER estimate
Who was exposed to shaking
USGS publishes PAGER impact estimates for significant earthquakes, usually within an hour. No PAGER estimate is available for this event.
After the main event
Aftershocks within 100 km
USGS has not published any M2.5+ earthquake within 100 km in the 30 days after this event.
Regional history
Past M5+ earthquakes within 300 km
USGS lists 19 M5.0+ earthquakes within 300 km before this one (catalog from 1900; older records are less complete). The strongest:
- 8.11932 Jalisco, Mexico EarthquakeJune 3, 1932 · 100 km N of this epicenter
- 7.87 km E of Los Tepames, MexicoJune 18, 1932 · 42 km NE of this epicenter
- 7.712 km NNE of La Central, MexicoJune 22, 1932 · 64 km NW of this epicenter
- 7.619 km W of Arteaga, MexicoJune 7, 1911 · 162 km E of this epicenter
- 6.633 km SSW of Cuyutlán, MexicoMay 1, 1921 · 41 km SW of this epicenter
- 6.512 km NW of Tumbiscatío de Ruiz, MexicoJune 7, 1918 · 154 km E of this epicenter
- 6.323 km N of Aratichanguío, MexicoAugust 7, 1925 · 270 km E of this epicenter
History · NOAA
Deadliest earthquakes in this area
NOAA’s significant-earthquake database lists 25 damaging, deadly or tsunami-generating earthquakes within 300 km of this epicenter since 1700, which together caused about 4,558 recorded deaths. The most severe:
- 1806M7.5
Jalisco,Oaxaca,Michoacan
25 Mar 1806 · 10 km away · intensity VIII
2,000 deathsExtreme damage ($25M+)
- 1818M8.2
Morelos-Guerrero,Mexico City,Guadalajara
31 May 1818 · 23 km away · intensity X
2,000 deathsSevere damage ($5–24M)tsunami
- 1932M8.1
Near Coast Of Jalisco
3 Jun 1932 · 81 km away · intensity X
400 deathsSevere damage ($5–24M)tsunami
- 1932M7.7
Central
22 Jun 1932 · 64 km away
75 deathsSevere damage ($5–24M)tsunami
- 1847
Jalisco,Oaxaca,Michoacan
2 Oct 1847 · 197 km away · intensity IX
58 deathsSevere damage ($5–24M)
- 1875M7.5
San Cristobal De La Barranca
11 Feb 1875 · 207 km away
25 deathsModerate damage ($1–5M)
NOAA NCEI Global Significant Earthquake Database. Historical figures are estimates; older records are incomplete.