QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0ml

Earthquake near Woodward, OK

No earthquake was likely felt in Woodward in the 24 hours to 3:51 pm CST (21:51 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 3.0 earthquake was recorded 48 km (30 mi) east of Woodward, OK, at 8:29 am CDT on 15 April 2016 (13:29 UTC), 5.9 km deep.

USGS: 12 km SSE of Waynoka, Oklahoma

8:29 am CDT, Apr 15, 2016 · · 5.9 km deep · released about 950 lb of TNT

10 km30 km60 km120 km N Woods County 29 kmMajor County 33 kmWoodward County 38 kmAlfalfa County 55 kmDewey County 56 kmBlaine County 76 kmHarper County 81 kmEllis County 85 kmBarber County 85 km
Distance rings around the epicentre, with the nearest towns at their true direction and later quakes as coloured dots. Not a shaking map — see the USGS ShakeMap for that.
When
8:29 am CDT on 15 April 2016 ()
Where
48 km (30 mi) east of Woodward, OK · earthquakes near Woodward
Oklahoma today
every earthquake in Oklahoma in the last 24 hours
Magnitude
M 3.0 (ml)
Depth
5.9 km below the surface
Felt
no reports yet
Nearest
Woods County, 29 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3789 days ago

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 73 km (45 mi) from the epicentre. In Woodward, 48 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.

Likely felt in: Mooreland 32 km, intensity III · Fairview 40 km, intensity III · Alva 41 km, intensity II · Woodward 48 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 950 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.0 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 350,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 16,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 11,000× the energy of this one
  4. This earthquake M 3.0 about 950 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 1,400 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 36.4684, -98.8506. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Woods County, OK 29 km (18 mi) N earthquakes near Woods County
Major County, OK 33 km (20 mi) ESE earthquakes near Major County
Woodward County, OK 38 km (24 mi) W earthquakes near Woodward County
Alfalfa County, OK 55 km (34 mi) ENE earthquakes near Alfalfa County
Dewey County, OK 56 km (35 mi) SSW earthquakes near Dewey County
Blaine County, OK 76 km (47 mi) SSE earthquakes near Blaine 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.

  1. 2.6 8 km SW of Waynoka, Oklahoma
  2. 2.5 0 km SE of Cleo Springs, Oklahoma
  3. 3.1 9 km SW of Waynoka, Oklahoma
  4. 2.5 4 km NE of Avard, Oklahoma
  5. 2.5 8 km NE of Quinlan, Oklahoma
  6. 2.8 6 km NW of Quinlan, Oklahoma
  7. 3.2 16 km SE of Waynoka, Oklahoma
  8. 2.7 17 km SE of Waynoka, Oklahoma
  9. 2.5 17 km SE of Waynoka, Oklahoma
  10. 2.9 3 km WSW of Aline, Oklahoma
  11. 3.2 17 km SE of Waynoka, Oklahoma
  12. 2.8 16 km SE of Waynoka, Oklahoma
  13. 2.5 7 km N of Waynoka, Oklahoma
  14. 2.6 7 km ENE of Waynoka, Oklahoma
  15. 2.7 7 km E 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

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.