Earthquake · reviewed by a seismologist
M 1.7ml
9.5 km SSW of Quinlan, OK
Yes. A magnitude 1.7 earthquake was recorded 9.5 km SSW of Quinlan, OK, at 3:56 pm CST on 17 November 2020 (21:56 UTC), 7.5 km deep.
- When
- Magnitude
- M 1.7 (ml)
- Depth
- 7.5 km below the surface
- Felt
- no reports yet
- Nearest
- Woods County, 25 km NNE
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 2184 days ago
Earthquake alerts for Mooreland, OK
Get a notification in this browser when USGS records an earthquake near Mooreland, OK. 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 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 10 km (6 mi) from the epicentre. 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: Mooreland.
How big was it?
This earthquake released about 11 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 1,400,000× the energy of this one
- Magna, Utah 2020 M 5.7 1,000,000× the energy of this one
- Around the size people start to feel M 3.0 89× the energy of this one
- This earthquake M 1.7 about 11 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 in our catalogue was M 5.1 on 2016-02-13 — about 130,000 times the energy of this one.
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 36.5277, -98.9898. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Woods County, OK | 25 km (15 mi) | NNE | earthquakes near Woods County |
| Woodward County, OK | 28 km (17 mi) | WSW | earthquakes near Woodward County |
| Major County, OK | 47 km (29 mi) | ESE | earthquakes near Major County |
| Dewey County, OK | 61 km (38 mi) | S | earthquakes near Dewey County |
| Alfalfa County, OK | 64 km (39 mi) | ENE | earthquakes near Alfalfa County |
| Harper County, OK | 67 km (42 mi) | WNW | earthquakes near Harper County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
55 earthquakes have been recorded within 50 km since this one.
- 2.2 9 km NNE of Quinlan, Oklahoma
- 1.6 9 km NE of Quinlan, Oklahoma
- 2.3 9 km NE of Quinlan, Oklahoma
- 3.1 10 km NNE of Quinlan, Oklahoma
- 2.0 9 km NNE of Quinlan, Oklahoma
- 1.6 10 km NNE of Quinlan, Oklahoma
- 2.4 4 km W of Seiling, Oklahoma
- 1.5 16 km SE of Waynoka, Oklahoma
- 1.6 9 km NE of Quinlan, Oklahoma
- 1.7 9 km NNE of Quinlan, Oklahoma
- 1.9 9 km NNE of Quinlan, Oklahoma
- 1.8 9 km NNE of Quinlan, Oklahoma
- 1.6 9 km NNE of Quinlan, Oklahoma
- 2.1 9 km NNE of Quinlan, Oklahoma
- 2.6 10 km NNE of Quinlan, Oklahoma
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.