Earthquake · reviewed by a seismologist
M 2.5mb_lg
Earthquake near McConnell AFB, KS
No earthquake was likely felt in McConnell AFB in the 24 hours to 8:12 am CST (14:12 UTC). The last one was M 3.4, 235 km (146 mi) SSW, at 5:53 am CST on 7 November 2026, estimated intensity II (weak) in town; 23 felt reports to USGS. Every earthquake near McConnell AFB
This page: a magnitude 2.5 earthquake was recorded 3 km (2 mi) northwest of McConnell AFB, KS, at 5:33 pm CDT on 24 October 2021 (22:33 UTC), 6.5 km deep. 183 people have reported feeling it to USGS.
USGS: 2 km NW of McConnell AFB, Kansas
8 km (5 mi) SE of Wichita, KS
- When
- 5:33 pm CDT on 24 October 2021 ()
- Where
- 3 km (2 mi) northwest of McConnell AFB, KS · earthquakes near McConnell AFB
- Magnitude
- M 2.5 (mb_lg)
- Depth
- 6.5 km below the surface
- Felt
- 183 reports · strongest reported intensity IV
- Nearest
- Sedgwick County, 17 km WNW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 1520 days ago
Earthquake alerts for McConnell AFB, KS
Get a notification in this browser when USGS records an earthquake near McConnell AFB, 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 46 km (29 mi) from the epicentre. In McConnell AFB, 3 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: Wichita 7 km, intensity III · Derby 12 km, intensity III · Haysville 12 km, intensity III · Andover 14 km, intensity III · Belle Plaine 28 km, intensity II · Conway Springs 43 km, intensity II · Wellington 43 km, intensity II · Cheney 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 170 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 89,000× the energy of this one
- Magna, Utah 2020 M 5.7 63,000× the energy of this one
- Around the size people start to feel M 3.0 5.6× the energy of this one
- This earthquake M 2.5 about 170 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
No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.
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 37.6489, -97.2764. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Sedgwick County, KS | 17 km (10 mi) | WNW | earthquakes near Sedgwick County |
| Butler County, KS | 41 km (25 mi) | ENE | earthquakes near Butler County |
| Harvey County, KS | 47 km (29 mi) | NNW | earthquakes near Harvey County |
| Sumner County, KS | 50 km (31 mi) | SSW | earthquakes near Sumner County |
| Cowley County, KS | 60 km (37 mi) | SE | earthquakes near Cowley County |
| Kingman County, KS | 77 km (48 mi) | W | earthquakes near Kingman County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
13 earthquakes have been recorded within 50 km since this one.
- 2.1 4 km SSE of Cheney, Kansas
- 2.3 6 km SW of Goddard, Kansas
- 2.3 7 km NNE of Rose Hill, Kansas
- 2.3 4 km ENE of Eastborough, Kansas
- 2.8 10 km N of Milton, Kansas
- 2.4 10 km WNW of Viola, Kansas
- 2.6 8 km WNW of Viola, Kansas
- 2.2 9 km NNE of Milton, Kansas
- 2.4 9 km NW of Viola, Kansas
- 3.5 9 km WNW of Viola, Kansas
- 2.6 9 km WNW of Viola, Kansas
- 3.0 9 km WNW of Viola, Kansas
- 2.4 9 km WNW of Viola, 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.