Earthquake · reviewed by a seismologist
M 1.7md
Earthquake near Ridgely, TN
No earthquake was likely felt in Ridgely in the 24 hours to 4:25 am CST (10:25 UTC). The last one was M 1.6, 3 km (2 mi) NNE, at 9:02 pm CDT on 31 October 2026, estimated intensity II (weak) in town. Every earthquake near Ridgely
This page: a magnitude 1.7 earthquake was recorded 8 km (5 mi) northwest of Ridgely, TN, at 5:43 am CDT on 22 October 2026 (10:43 UTC), 9.2 km deep.
USGS: 7 km NW of Ridgely, Tennessee
- When
- 5:43 am CDT on 22 October 2026 ()
- Where
- 8 km (5 mi) northwest of Ridgely, TN · earthquakes near Ridgely
- Magnitude
- M 1.7 (md)
- Depth
- 9.2 km below the surface
- Felt
- no reports yet
- Nearest
- Lake County, 6 km ENE
- Nearest mapped fault
- Reelfoot scarp and New Madrid seismic zone, 2 km from its surface trace — near is not the same as on
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 19 days ago
Earthquake alerts for Ridgely, TN
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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 minor earthquake. Quakes this small are rarely felt and do not cause damage.
At this magnitude and depth, people at rest would likely notice it out to about 6 km (4 mi) from the epicentre. In Ridgely, 8 km away, the estimate is intensity II (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.
Earthquakes near other towns within 30 km: Tiptonville, Caruthersville, Portageville, Hayti, New Madrid.
How big was it?
This earthquake released about 9.3 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 1,600,000× the energy of this one
- Magna, Utah 2020 M 5.7 1,100,000× the energy of this one
- Around the size people start to feel M 3.0 100× the energy of this one
- This earthquake M 1.7 about 9.3 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 4.0 on 2026-04-23 — about 3,200 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 36.3178, -89.5460. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Lake County, TN | 6 km (4 mi) | ENE | earthquakes near Lake County |
| Pemiscot County, MO | 25 km (15 mi) | WSW | earthquakes near Pemiscot County |
| Dyer County, TN | 32 km (20 mi) | SSE | earthquakes near Dyer County |
| New Madrid County, MO | 32 km (20 mi) | NNW | earthquakes near New Madrid County |
| Obion County, TN | 36 km (22 mi) | E | earthquakes near Obion County |
| Fulton County, KY | 41 km (26 mi) | NE | earthquakes near Fulton County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
11 earthquakes have been recorded within 50 km since this one.
- 1.6 1 km N of Howardville, Missouri
- 1.6 4 km WSW of Tiptonville, Tennessee
- 1.6 8 km NW of Tiptonville, Tennessee
- 1.6 2 km NNE of Ridgely, Tennessee
- 1.8 6 km E of Risco, Missouri
- 1.4 5 km SE of Marston, Missouri
- 2.3 7 km SW of Tiptonville, Tennessee
- 1.7 4 km SSW of Matthews, Missouri
- 1.4 5 km SE of Ridgely, Tennessee
- 1.4 6 km S of Ridgely, Tennessee
- 1.8 1 km ENE of Marston, Missouri
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.