M5.4 earthquake 15 km WSW of Papanoa, Mexico

Magnitude

5.4 (mw), moderate

Local time

Fri, Sep 27, 1985, 9:52 PM CST

UTC

1985-09-28 03:52:46 UTC

Depth

33.0 km (20.5 mi), shallow

Epicenter

17.274° N, 101.182° W

Region

Mexico

Tsunami flag

No

Status

Reviewed by a seismologist

Depth from

OPERATOR_ASSIGNED

• Petatlán, MexicoPopulation 21,659. Forecast31 kmSSE
• Ciudad Lázaro Cárdenas, MexicoPopulation 196,003. Forecast132 kmSE
• Iztapalapa, MexicoPopulation 1,835,486. Forecast322 kmSW

After

1. 4.337 km N of El Súchil, MexicoThu, Oct 3, 12:29 AM CST · 14964 days ago · 81 km deep · 62 km away
2. 3.618 km WSW of Ixtapa, MexicoSat, Oct 5, 12:55 AM CST · 14962 days ago · 33 km deep · 75 km away
3. 4.06 km SSW of Los Achotes, MexicoSun, Oct 6, 12:28 AM CST · 14961 days ago · 46 km deep · 41 km away
4. 3.624 km SSW of Palos Blancos, MexicoWed, Oct 9, 10:56 PM CST · 14957 days ago · 10 km deep · 23 km away
5. 3.839 km SW of Palos Blancos, MexicoThu, Oct 10, 7:29 AM CST · 14957 days ago · 10 km deep · 38 km away
6. 4.211 km NE of San Miguelito, MexicoSun, Nov 3, 1:52 AM CST · 14933 days ago · 53 km deep · 53 km away

Before

1. 3.714 km SSW of La Unión, MexicoTue, Sep 24, 9:54 PM CST · 14973 days ago · 33 km deep · 97 km away
2. 3.713 km SSW of Vallecitos de Zaragoza, MexicoMon, Sep 23, 6:25 PM CST · 14974 days ago · 33 km deep · 62 km away
3. 4.535 km SSW of Palos Blancos, MexicoMon, Sep 23, 1:31 PM CST · 14974 days ago · 33 km deep · 27 km away
4. 4.3near the coast of Guerrero, MexicoSun, Sep 22, 1:48 AM CST · 14975 days ago · 33 km deep · 64 km away
5. 3.518 km W of Ixtapa, MexicoSat, Sep 21, 3:11 AM CST · 14976 days ago · 33 km deep · 78 km away
6. 3.631 km SSW of Ixtapa-Zihuatanejo, MexicoFri, Sep 20, 10:40 PM CST · 14976 days ago · 33 km deep · 47 km away
7. 7.67 km N of Pantla, MexicoFri, Sep 20, 7:37 PM CST · 14977 days ago · 31 km deep · 77 km away
8. 3.85 km W of Lagunillas, MexicoFri, Sep 20, 2:03 PM CST · 14977 days ago · 33 km deep · 87 km away
9. 4.24 km ENE of Pantla, MexicoFri, Sep 20, 1:22 PM CST · 14977 days ago · 33 km deep · 70 km away
10. 4.018 km WSW of Ixtapa, MexicoFri, Sep 20, 6:57 AM CST · 14977 days ago · 33 km deep · 74 km away
11. 3.945 km S of Petacalco, MexicoFri, Sep 20, 3:51 AM CST · 14977 days ago · 33 km deep · 99 km away
12. 4.214 km N of El Coacoyul, MexicoFri, Sep 20, 1:38 AM CST · 14977 days ago · 33 km deep · 62 km away
13. 4.513 km S of Ixtapa-Zihuatanejo, MexicoThu, Sep 19, 9:42 PM CST · 14978 days ago · 33 km deep · 50 km away
14. 4.78 km S of Ixtapa-Zihuatanejo, MexicoThu, Sep 19, 9:34 PM CST · 14978 days ago · 33 km deep · 52 km away
15. 3.65 km SSE of Lagunillas, MexicoThu, Sep 19, 4:59 PM CST · 14978 days ago · 33 km deep · 78 km away
16. 5.016 km ENE of Pantla, MexicoThu, Sep 19, 12:29 PM CST · 14978 days ago · 33 km deep · 66 km away
17. 4.029 km SW of Lagunillas, MexicoThu, Sep 19, 9:27 AM CST · 14978 days ago · 33 km deep · 90 km away
18. 3.219 km SE of Vallecitos de Zaragoza, MexicoWed, Sep 4, 7:27 AM CST · 14993 days ago · 33 km deep · 57 km away

From the USGS Earthquake Hazards Program and its partner networks, event usp0002k7c (also filed as gcmtb092885a, gcmt19850928035247, iscgem516867). Read Tue, Sep 22, 2026, 3:38 PM UTC.