QuakeIndex

Earthquake · reviewed by a seismologist

M 2.6mb_lg

Earthquake near Woodward, OK

No earthquake was likely felt in Woodward in the 24 hours to 9:24 am CST (15:24 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 2.6 earthquake was recorded 28 km (18 mi) east-northeast of Woodward, OK, at 2:09 pm CDT on 9 October 2016 (19:09 UTC), 2.9 km deep.

USGS: 6 km NNW of Quinlan, Oklahoma

2:09 pm CDT, Oct 9, 2016 · · 2.9 km deep · released about 240 lb of TNT

Every earthquake near Woodward Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Woodward County 19 kmWoods County 32 kmMajor County 53 kmDewey County 59 kmHarper County 61 kmEllis County 67 kmAlfalfa County 72 kmComanche County 77 kmBarber County 88 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
2:09 pm CDT on 9 October 2016 ()
Where
28 km (18 mi) east-northeast of Woodward, OK · earthquakes near Woodward
Oklahoma today
every earthquake in Oklahoma in the last 24 hours
Magnitude
M 2.6 (mb_lg)
Depth
2.9 km below the surface
Felt
no reports yet
Nearest
Woodward County, 19 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3596 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 51 km (32 mi) from the epicentre. In Woodward, 28 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 13 km, intensity III · Woodward 28 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 240 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 63,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 45,000× the energy of this one
  3. Around the size people start to feel M 3.0 4× the energy of this one
  4. This earthquake M 2.6 about 240 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 5,600 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 36.5034, -99.0842. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Woodward County, OK 19 km (12 mi) WSW earthquakes near Woodward County
Woods County, OK 32 km (20 mi) NE earthquakes near Woods County
Major County, OK 53 km (33 mi) ESE earthquakes near Major County
Dewey County, OK 59 km (37 mi) S earthquakes near Dewey County
Harper County, OK 61 km (38 mi) WNW earthquakes near Harper County
Ellis County, OK 67 km (42 mi) WSW earthquakes near Ellis County

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

60 earthquakes have been recorded within 50 km since this one.

  1. 2.6 9 km WSW of Waynoka, Oklahoma
  2. 2.5 12 km WSW of Cleo Springs, Oklahoma
  3. 2.7 16 km SE of Waynoka, Oklahoma
  4. 2.6 16 km SSE of Waynoka, Oklahoma
  5. 3.0 17 km SSE of Waynoka, Oklahoma
  6. 2.6 17 km SSE of Waynoka, Oklahoma
  7. 3.0 17 km SSE of Waynoka, Oklahoma
  8. 2.8 2 km WNW of Chester, Oklahoma
  9. 2.9 17 km SSE of Waynoka, Oklahoma
  10. 2.9 17 km SSE of Waynoka, Oklahoma
  11. 2.5 2 km WNW of Chester, Oklahoma
  12. 2.6 1 km NW of Chester, Oklahoma
  13. 2.7 10 km NNE of Quinlan, Oklahoma
  14. 2.5 16 km SSE of Waynoka, Oklahoma
  15. 3.0 16 km SSE of Waynoka, 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.