The map shows quakes of M1.5 and up from the last 90 days, the 1 biggest on record, and always the very latest quake — even if it was smaller than M1.5. The list below can include smaller ones the map leaves out. Tap any dot for details.
In the last 30 days, 0 earthquakes of M1.5 or bigger were recorded within 100 km of Portsmouth. The biggest quake on record near Portsmouth — records go back to 1980 — was the M4.6 of Sep 07, 1988, 02:28 UTC: 6 km W of Owingsville, Kentucky.
Latest earthquakes near Portsmouth
| Mag | Location | Local time | Depth | Distance |
|---|---|---|---|---|
| M2.2 | 7 km S of Nelsonville, Ohio | Aug 31, 2026, 04:06 AM | 18 km | 99 km NE |
| M1.7 | 15 km E of Flemingsburg, Kentucky | Mar 08, 2026, 03:00 AM | 20 km | 60 km SW |
| M2.2 | 2 km SSE of Concord, Kentucky | Feb 26, 2026, 10:46 PM | 18 km | 42 km W |
| M2.5 | 2 km NE of Hillsboro, Ohio | Feb 22, 2026, 05:50 AM | 11 km | 75 km NW |
| M2.2 | 7 km WSW of Vanceburg, Kentucky | Feb 20, 2026, 12:02 AM | 10 km | 39 km WSW |
| M2.3 | 2 km W of Jackson, Ohio | Nov 26, 2025, 08:07 AM | 20 km | 46 km NE |
| M2.4 | 8 km SSE of Flemingsburg, Kentucky | Nov 16, 2025, 12:44 AM | 10 km | 74 km SW |
| M3.1 | 2 km NNW of Oak Hill, Ohio | Feb 03, 2025, 04:04 PM | 26 km | 42 km ENE |
| M3.1 | 1 km NW of Chesapeake, Ohio | Dec 16, 2024, 04:39 PM | 13 km | 56 km SE |
| M3.0 | 2 km E of Manchester, Ohio | Dec 12, 2021, 12:52 PM | 15 km | 51 km W |
Earthquakes per year near Portsmouth (M3.0 and up, within 100 km)
M3.0–3.9 M4.0+
Each bar is one year; taller means more quakes (M3.0 and up). The dark red part is the bigger ones (M4.0+), counted inside the number above each bar — not added on top. These may be felt, depending on how far away and how deep they are. 2026 is not a full year yet — it only counts up to today. Source: USGS Earthquake Catalog.
What the last year looked like near Portsmouth
Every quake of M1.5 or bigger within 100 km over the last year — 7 in total. A quake of exactly M2.0 counts in the M2.0–3.0 group.
The 1 biggest earthquakes on record near Portsmouth (M4.0 and up, since 1980)
| Mag | Location | Date (UTC) | Distance |
|---|---|---|---|
| M4.6 | 6 km W of Owingsville, Kentucky | Sep 07, 1988, 02:28 UTC | 98 km |
Nearby places
Sciotodale, OH (11 km) · Wheelersburg, OH (12 km) · Lucasville, OH (16 km) · Meads, KY (43 km) · Ashland, KY (42 km) · Ironton, OH (35 km)
USGS data fetched Nov 03, 2026, 17:45 UTC · page built Nov 03, 2026, 17:45 UTC. How to read this page: recent-window counts cover M1.5+ events within 100 km; the 10-year layer is based on M3.0+ and the history layer on M4.0+ since 1980. Recording completeness varies by era and region — small quakes from early decades are under-recorded, so “no record” does not prove “never happened”. Depths are relative to sea level and can be slightly negative for shallow events in elevated terrain. Method: data & methodology.