QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0mb_lg

Earthquake near Hays, KS

No earthquake was likely felt in Hays in the 24 hours to 6:57 pm CST (00:57 UTC). The last one was M 2.7, 55 km (34 mi) ENE, at 12:18 pm CDT on 15 October 2026, estimated intensity II (weak) in town. Every earthquake near Hays

This page: a magnitude 3.0 earthquake was recorded 15 km (9 mi) east-northeast of Hays, KS, at 2:26 am CDT on 11 August 2019 (07:26 UTC), 5.0 km deep. 3 people have reported feeling it to USGS.

USGS: 4 km E of Catharine, Kansas

2:26 am CDT, Aug 11, 2019 · · 5.0 km deep · released about 950 lb of TNT

10 km30 km60 km120 km N Ellis County 13 kmRussell County 34 kmRush County 47 kmRooks County 49 kmOsborne County 58 kmBarton County 60 kmTrego County 61 kmGraham County 78 kmNess County 82 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
2:26 am CDT on 11 August 2019 ()
Where
15 km (9 mi) east-northeast of Hays, KS · earthquakes near Hays
Magnitude
M 3.0 (mb_lg)
Depth
5.0 km below the surface
Felt
3 reports · strongest reported intensity IV
Nearest
Ellis County, 13 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2570 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 Hays, 15 km away, the estimate is intensity III (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: Hays 15 km, intensity III · Russell 26 km, intensity III · Ellis 34 km, intensity III · Plainville 36 km, intensity III. 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 4.6 on 2019-06-22 — about 250 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 38.9266, -99.1635. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Ellis County, KS 13 km (8 mi) W earthquakes near Ellis County
Russell County, KS 34 km (21 mi) E earthquakes near Russell County
Rush County, KS 47 km (29 mi) SSW earthquakes near Rush County
Rooks County, KS 49 km (30 mi) NNW earthquakes near Rooks County
Osborne County, KS 58 km (36 mi) NE earthquakes near Osborne County
Barton County, KS 60 km (37 mi) SE earthquakes near Barton County

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

Aftershocks so far

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

  1. 2.7 7 km SSW of Luray, Kansas
  2. 2.5 9 km SW of Natoma, Kansas
  3. 2.9 7 km N of Hays, Kansas
  4. 2.8 10 km SSW of Stockton, Kansas
  5. 2.5 1 km NE of Zurich, Kansas
  6. 2.6 14 km WSW of Natoma, Kansas
  7. 3.0 4 km SE of Paradise, Kansas
  8. 3.0 2 km SW of Zurich, Kansas
  9. 3.0 6 km SW of Luray, Kansas
  10. 2.6 1 km SE of Palco, Kansas
  11. 2.6 5 km E of Palco, Kansas
  12. 2.5 5 km W of Zurich, Kansas
  13. 2.6 15 km SE of Plainville, Kansas
  14. 2.4 16 km SSE of Plainville, Kansas
  15. 2.7 6 km NNW of Zurich, Kansas

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.