The map shows quakes of M1.5 and up from the last 90 days, the 8 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, 2 earthquakes of M1.5 or bigger were recorded within 100 km of Harper, the biggest of them M1.8. The biggest quake on record near Harper — records go back to 1980 — was the M4.9 of Nov 12, 2014, 21:40 UTC: 4 km ENE of Milan, Kansas.
Latest earthquakes near Harper
| Mag | Location | Local time | Depth | Distance |
|---|---|---|---|---|
| M1.1 | 4 km NW of Medford, Oklahoma | Oct 24, 2026, 12:28 AM | 4 km | 55 km SSE |
| M1.8 | 9 km NW of Renfrow, Oklahoma | Oct 23, 2026, 07:14 PM | 2 km | 42 km SE |
| M1.5 | 8 km NNW of Hunter, Oklahoma | Oct 23, 2026, 05:46 AM | 7 km | 78 km SSE |
| M1.6 | 9 km NE of Blackwell, Oklahoma | Oct 16, 2026, 11:09 PM | 19 km | 87 km ESE |
| M1.1 | 4 km NE of Helena, Oklahoma | Oct 07, 2026, 12:49 AM | 5 km | 81 km SSW |
| M1.8 | 3 km ESE of Aline, Oklahoma | Oct 04, 2026, 11:38 AM | 8 km | 94 km SSW |
| M2.3 | 9 km NNW of Pretty Prairie, Kansas | Sep 04, 2026, 10:10 PM | 6 km | 64 km N |
| M1.5 | 8 km NNE of Nash, Oklahoma | Aug 25, 2026, 12:22 PM | 7 km | 61 km S |
| M2.4 | 3 km ENE of Medford, Oklahoma | Aug 24, 2026, 05:23 PM | 7 km | 59 km SSE |
| M1.5 | 4 km NE of Medford, Oklahoma | Jul 24, 2026, 09:18 AM | 7 km | 57 km SSE |
Earthquakes per year near Harper (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 Harper
Every quake of M1.5 or bigger within 100 km over the last year — 21 in total. A quake of exactly M2.0 counts in the M2.0–3.0 group.
The 8 biggest earthquakes on record near Harper (M4.0 and up, since 1980)
| Mag | Location | Date (UTC) | Distance |
|---|---|---|---|
| M4.9 | 4 km ENE of Milan, Kansas | Nov 12, 2014, 21:40 UTC | 36 km |
| M4.7 | 8 km E of Nescatunga, Oklahoma | Nov 30, 2015, 09:49 UTC | 60 km |
| M4.7 | 4 km SW of Lambert, Oklahoma | Nov 19, 2015, 07:42 UTC | 80 km |
| M4.5 | 7 km NW of Medford, Oklahoma | Jan 31, 2022, 17:10 UTC | 53 km |
| M4.5 | 2 km W of South Hutchinson, Kansas | Jan 19, 2020, 19:08 UTC | 82 km |
| M4.4 | 8 km E of Pond Creek, Oklahoma | May 17, 2019, 20:33 UTC | 74 km |
| M4.4 | 8 km E of Nescatunga, Oklahoma | Jun 09, 2018, 13:59 UTC | 58 km |
| M4.4 | 7 km SSE of Byron, Oklahoma | Nov 23, 2015, 21:17 UTC | 55 km |
Nearby places
Anthony, KS (15 km) · Conway Springs, KS (36 km) · Kingman, KS (41 km) · Cheney, KS (44 km) · Medicine Lodge, KS (49 km) · Caldwell, KS (47 km)
USGS data fetched Nov 03, 2026, 16:45 UTC · page built Nov 03, 2026, 16:45 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.