Earthquake · reviewed by a seismologist
M 2.7mb_lg
Earthquake near Salina, KS
No earthquake was likely felt in Salina in the 24 hours to 10:45 am CST (16:45 UTC). The last one was M 2.6, 10 km (6 mi) SSE, at 3:40 pm CDT on 8 October 2026, estimated intensity III (weak) in town. Every earthquake near Salina
This page: a magnitude 2.7 earthquake was recorded 19 km (12 mi) south-southeast of Salina, KS, at 9:21 am CST on 18 December 2021 (15:21 UTC), 5.0 km deep. 2 people have reported feeling it to USGS.
USGS: 4 km E of Assaria, Kansas
- When
- 9:21 am CST on 18 December 2021 ()
- Where
- 19 km (12 mi) south-southeast of Salina, KS · earthquakes near Salina
- Magnitude
- M 2.7 (mb_lg)
- Depth
- 5.0 km below the surface
- Felt
- 2 reports · strongest reported intensity III
- Nearest
- Saline County, 15 km NW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 1716 days ago
Earthquake alerts for Salina, KS
Get a notification in this browser when USGS records an earthquake near Salina, 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 56 km (35 mi) from the epicentre. In Salina, 19 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: Salina 19 km, intensity III. Estimated for each town centre; each link is that town's own record.
How big was it?
This earthquake released about 340 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.7 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 45,000× the energy of this one
- Magna, Utah 2020 M 5.7 32,000× the energy of this one
- Around the size people start to feel M 3.0 2.8× the energy of this one
- This earthquake M 2.7 about 340 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 4.3 on 2021-12-08 — about 250 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 38.6781, -97.5527. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Saline County, KS | 15 km (9 mi) | NW | earthquakes near Saline County |
| McPherson County, KS | 32 km (20 mi) | SSW | earthquakes near McPherson County |
| Dickinson County, KS | 40 km (25 mi) | ENE | earthquakes near Dickinson County |
| Ottawa County, KS | 52 km (32 mi) | N | earthquakes near Ottawa County |
| Marion County, KS | 53 km (33 mi) | SE | earthquakes near Marion County |
| Ellsworth County, KS | 57 km (35 mi) | W | earthquakes near Ellsworth County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
58 earthquakes have been recorded within 50 km since this one.
- 2.7 7 km SE of Enterprise, Kansas
- 2.6 9 km SW of Gypsum, Kansas
- 2.9 7 km WSW of Gypsum, Kansas
- 3.3 5 km E of Assaria, Kansas
- 3.3 7 km ENE of Assaria, Kansas
- 2.7 3 km E of Assaria, Kansas
- 3.4 6 km ENE of Assaria, Kansas
- 2.4 5 km NE of Hope, Kansas
- 2.6 7 km SW of Gypsum, Kansas
- 2.7 2 km SW of Assaria, Kansas
- 2.4 3 km ENE of Assaria, Kansas
- 2.7 4 km WSW of Assaria, Kansas
- 2.6 0 km SSW of Assaria, Kansas
- 3.5 6 km WSW of Woodbine, Kansas
- 2.5 3 km NNW of Assaria, 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.