QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1ml

Earthquake near Saint George, UT

No earthquake was likely felt in Saint George in the 24 hours to 6:33 am MST (13:33 UTC). The last one was M 4.0, 95 km (59 mi) W, at 1:16 am MDT on 6 June 2025, estimated intensity II (weak) in town; 37 felt reports to USGS. Every earthquake near Saint George

This page: a magnitude 2.1 earthquake was recorded 10 km (6 mi) south of Saint George, UT, at 4:38 am MST on 13 February 2019 (11:38 UTC), 11 km deep. 9 people have reported feeling it to USGS.

USGS: 9 km S of Saint George, Utah

7 km (4 mi) SSW of St. George, UT

4:38 am MST, Feb 13, 2019 · · 11 km deep · released about 47 lb of TNT

Every earthquake near Saint George Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Washington County 29 kmIron County 102 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
4:38 am MST on 13 February 2019 ()
Where
10 km (6 mi) south of Saint George, UT · earthquakes near Saint George
Magnitude
M 2.1 (ml)
Depth
11 km below the surface
Felt
9 reports · strongest reported intensity III
Nearest
Washington County, 29 km NNE
Nearest mapped fault
Washington fault, 11 km from its surface trace — near is not the same as on
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2753 days ago

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 13 km (8 mi) from the epicentre. In Saint George, 10 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: Saint George 10 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 47 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 320,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 230,000× the energy of this one
  3. Around the size people start to feel M 3.0 20× the energy of this one
  4. This earthquake M 2.1 about 47 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

No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.

Before 2016, the USGS record lists 2 earthquakes of M5 or more within 50 km:

  1. 6.3 Near Pine Valley, Utah · 43 km N of this epicentre
  2. 5.9 3 km SSE of Washington, Utah · 13 km NE of this epicentre

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 37.0177, -113.5957. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Washington County, UT 29 km (18 mi) NNE earthquakes near Washington County
Iron County, UT 102 km (64 mi) NNE earthquakes near Iron County
Lincoln County, NV 131 km (82 mi) WNW earthquakes near Lincoln County

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

Aftershocks so far

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

  1. 1.6 16 km SSE of Saint George, Utah
  2. 1.6 12 km ESE of Pine Valley, Utah
  3. 1.9 22 km SSW of Saint George, Utah
  4. 2.0 14 km SSW of Saint George, Utah
  5. 1.5 13 km SSW of Saint George, Utah
  6. 1.7 6 km N of Saint George, Utah
  7. 2.7 31 km SSE of Saint George, Utah
  8. 1.5 15 km S of Saint George, Utah
  9. 1.5 12 km E of Pine Valley, Utah
  10. 1.7 8 km E of Pine Valley, Utah
  11. 1.5 16 km SSE of Saint George, Utah
  12. 1.9 8 km S of Saint George, Utah
  13. 2.1 17 km NNW of Beaver Dam, Arizona
  14. 2.2 8 km SSW of Leeds, Utah
  15. 2.5 16 km SSE of Saint George, Utah

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.