Earthquake · reviewed by a seismologist
M 2.8mb_lg
Earthquake near Hill City, KS
No earthquake was likely felt in Hill City in the 24 hours to 3:14 am CST (09:14 UTC). The last one was M 3.0, 12 km (7 mi) ESE, at 5:54 pm CDT on 28 September 2026, estimated intensity III (weak) in town; 8 felt reports to USGS. Every earthquake near Hill City
This page: a magnitude 2.8 earthquake was recorded 17 km (10 mi) south of Hill City, KS, at 5:49 am CDT on 29 July 2025 (10:49 UTC), 9.5 km deep. 9 people have reported feeling it to USGS.
USGS: 16 km S of Hill City, Kansas
- When
- 5:49 am CDT on 29 July 2025 ()
- Where
- 17 km (10 mi) south of Hill City, KS · earthquakes near Hill City
- Magnitude
- M 2.8 (mb_lg)
- Depth
- 9.5 km below the surface
- Felt
- 9 reports · strongest reported intensity IV
- Nearest
- Graham County, 16 km NNW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 396 days ago
Earthquake alerts for Hill City, KS
Get a notification in this browser when USGS records an earthquake near Hill City, KS. No account or email needed.
Alerts are on for .
Not a warning. An alert comes after USGS publishes a quake, usually minutes after the shaking. For early warning use ShakeAlert, through your phone's Wireless Emergency Alerts or the MyShake app.
This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.
At this magnitude and depth, people at rest would likely notice it out to about 61 km (38 mi) from the epicentre. In Hill City, 17 km away, the estimate is intensity III (weak). Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.
Likely felt in: Hill City 17 km, intensity III · Ellis 38 km, intensity II · Plainville 45 km, intensity II. Estimated for each town centre; each link is that town's own record.
How big was it?
This earthquake released about 480 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.8 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 32,000× the energy of this one
- Magna, Utah 2020 M 5.7 22,000× the energy of this one
- Around the size people start to feel M 3.0 2× the energy of this one
- This earthquake M 2.8 about 480 lb of TNT
Energy from the Gutenberg–Richter relation (log10E = 1.5M + 4.8), rounded to two figures; bar length is magnitude, which is already a logarithm of energy. Magnitudes of past earthquakes from the USGS catalogue.
For this area
The largest earthquake within 50 km since 2016 was M 4.6 on 2019-06-22 — about 500 times the energy of this one.
Before 2016, the USGS record since 1900 lists no earthquake of M5 or more within 50 km.
Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.
Where
Epicentre 39.2158, -99.8210. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Graham County, KS | 16 km (10 mi) | NNW | earthquakes near Graham County |
| Trego County, KS | 33 km (20 mi) | S | earthquakes near Trego County |
| Rooks County, KS | 45 km (28 mi) | ENE | earthquakes near Rooks County |
| Ellis County, KS | 55 km (34 mi) | SE | earthquakes near Ellis County |
| Sheridan County, KS | 55 km (34 mi) | WNW | earthquakes near Sheridan County |
| Norton County, KS | 64 km (39 mi) | N | earthquakes near Norton County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
6 earthquakes have been recorded within 50 km since this one.
- 3.0 2 km SSW of Bogue, Kansas
- 2.5 9 km S of Bogue, Kansas
- 2.4 12 km NE of Damar, Kansas
- 2.8 10 km SSW of Stockton, Kansas
- 2.5 1 km NE of Zurich, Kansas
- 2.5 3 km NE of Bogue, Kansas
Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of . QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.
On USGS
- The official USGS event page — the source of record for every value above
- Did you feel it? Report it to USGS — reports go to USGS, not to us
- ShakeMap for this event, when USGS has produced one
QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.