M3.7 earthquake 13 km NNW of La Unión, Mexico
A magnitude 3.7 earthquake struck 13 km NNW of La Unión, Mexico on Fri, Jul 26, 1985, 4:08 AM CST (10:08 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M8.0 1985 Michoacan, Mexico Earthquake. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 3.7 (mb), minor
- Local time
- UTC
- 1985-07-26 10:08:25 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 18.099° N, 101.841° W
- Region
- Mexico
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Did you feel it?
No one has reported feeling this quake to the USGS.
How well it is located
Reviewed by a seismologist.
- Depth from
- OPERATOR_ASSIGNED
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 24 in the 60 days after this one and 0 in the 30 days before it.
After
- 3.219 km SE of Vallecitos de Zaragoza, Mexico · 15000 days ago · 33 km deep · 76 km away
- 8.01985 Michoacan, Mexico Earthquake · 14985 days ago · 28 km deep · 74 km away
- 4.029 km SW of Lagunillas, Mexico · 14985 days ago · 33 km deep · 50 km away
- 4.86 km SW of El Habillal, Mexico · 14985 days ago · 33 km deep · 62 km away
- 4.048 km WNW of El Habillal, Mexico · 14985 days ago · 33 km deep · 99 km away
- 4.237 km SW of Tumbiscatío de Ruiz, Mexico · 14985 days ago · 33 km deep · 91 km away
- 5.016 km ENE of Pantla, Mexico · 14985 days ago · 33 km deep · 51 km away
- 3.65 km SSE of Lagunillas, Mexico · 14985 days ago · 33 km deep · 39 km away
- 4.78 km S of Ixtapa-Zihuatanejo, Mexico · 14985 days ago · 33 km deep · 66 km away
- 4.513 km S of Ixtapa-Zihuatanejo, Mexico · 14985 days ago · 33 km deep · 70 km away
- 4.214 km N of El Coacoyul, Mexico · 14985 days ago · 33 km deep · 55 km away
- 3.858 km WSW of Ixtapa, Mexico · 14985 days ago · 33 km deep · 82 km away
- 3.945 km S of Petacalco, Mexico · 14985 days ago · 33 km deep · 64 km away
- 4.018 km WSW of Ixtapa, Mexico · 14985 days ago · 33 km deep · 57 km away
- 3.628 km SSE of Petacalco, Mexico · 14984 days ago · 33 km deep · 44 km away
- 4.24 km ENE of Pantla, Mexico · 14984 days ago · 33 km deep · 46 km away
- 4.933 km W of El Habillal, Mexico · 14984 days ago · 33 km deep · 89 km away
- 3.85 km W of Lagunillas, Mexico · 14984 days ago · 33 km deep · 32 km away
- 7.67 km N of Pantla, Mexico · 14984 days ago · 31 km deep · 39 km away
- 3.631 km SSW of Ixtapa-Zihuatanejo, Mexico · 14984 days ago · 33 km deep · 85 km away
- 3.518 km W of Ixtapa, Mexico · 14984 days ago · 33 km deep · 52 km away
- 3.55 km WSW of Infiernillo (Morelos de Infiernillo), Mexico · 14983 days ago · 33 km deep · 22 km away
- 3.713 km SSW of Vallecitos de Zaragoza, Mexico · 14981 days ago · 33 km deep · 60 km away
- 4.512 km WNW of La Unión, Mexico · 14981 days ago · 33 km deep · 9 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0002h3n. Read Wed, Sep 30, 2026, 12:31 AM UTC.