Earthquake · reviewed by a seismologist
M 1.6ml
Earthquake near Woodward, OK
No earthquake was likely felt in Woodward in the 24 hours to 1:10 pm CST (19:10 UTC). The last one was M 3.4, 152 km (94 mi) SE, at 5:53 am CST on 7 November 2026, estimated intensity II (weak) in town; 23 felt reports to USGS. Every earthquake near Woodward
This page: a magnitude 1.6 earthquake was recorded 40 km (25 mi) east-northeast of Woodward, OK, at 4:02 am CDT on 8 April 2023 (09:02 UTC), 6.5 km deep.
USGS: 8 km SW of Waynoka, Oklahoma
- When
- 4:02 am CDT on 8 April 2023 ()
- Where
- 40 km (25 mi) east-northeast of Woodward, OK · earthquakes near Woodward
- Oklahoma today
- every earthquake in Oklahoma in the last 24 hours
- Magnitude
- M 1.6 (ml)
- Depth
- 6.5 km below the surface
- Felt
- no reports yet
- Nearest
- Woods County, 23 km NNE
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 1311 days ago
Earthquake alerts for Woodward, OK
Get a notification in this browser when USGS records an earthquake near Woodward, 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 4 km (2 mi) from the epicentre. In Woodward, 40 km away, the estimate is intensity I (not felt). 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 7.6 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 2,000,000× the energy of this one
- Magna, Utah 2020 M 5.7 1,400,000× the energy of this one
- Around the size people start to feel M 3.0 130× the energy of this one
- This earthquake M 1.6 about 7.6 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 5.1 on 2016-02-13 — about 180,000 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 36.5393, -98.9593. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Woods County, OK | 23 km (14 mi) | NNE | earthquakes near Woods County |
| Woodward County, OK | 31 km (19 mi) | WSW | earthquakes near Woodward County |
| Major County, OK | 45 km (28 mi) | SE | earthquakes near Major County |
| Alfalfa County, OK | 61 km (38 mi) | ENE | earthquakes near Alfalfa County |
| Dewey County, OK | 63 km (39 mi) | S | earthquakes near Dewey County |
| Harper County, OK | 69 km (43 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.
- 1.6 15 km SSE of Waynoka, Oklahoma
- 2.5 14 km SSE of Waynoka, Oklahoma
- 1.9 14 km SSE of Waynoka, Oklahoma
- 3.6 14 km SSE of Waynoka, Oklahoma
- 3.1 14 km SSE of Waynoka, Oklahoma
- 3.5 14 km SSE of Waynoka, Oklahoma
- 1.6 17 km SSE of Waynoka, Oklahoma
- 1.5 23 km NE of Fort Supply, Oklahoma
- 1.9 23 km NE of Fort Supply, Oklahoma
- 1.8 22 km WSW of Freedom, Oklahoma
- 1.8 23 km NE of Fort Supply, Oklahoma
- 1.8 16 km SSE of Waynoka, Oklahoma
- 1.7 16 km SSE of Waynoka, Oklahoma
- 1.7 8 km WSW of Waynoka, Oklahoma
- 1.5 6 km ENE of Avard, 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.