QuakeIndex

Earthquake · reviewed by a seismologist

M 2.9ml

Earthquake near Centennial Park, AZ

No earthquake was likely felt in Centennial Park in the 24 hours to 3:30 pm MST (22:30 UTC). The last one was M 2.1, 11 km (7 mi) NNE, at 11:21 pm MST on 6 October 2026, estimated intensity II (weak) in town. Every earthquake near Centennial Park

This page: a magnitude 2.9 earthquake was recorded 30 km (19 mi) south of Centennial Park, AZ, at 12:57 pm MST on 18 March 2026 (19:57 UTC), 12 km deep.

USGS: 29 km S of Centennial Park, Arizona

64 km (40 mi) SE of St. George, UT

12:57 pm MST, Mar 18, 2026 · · 12 km deep · released about 680 lb of TNT

10 km30 km60 km120 km N Washington County 75 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
12:57 pm MST on 18 March 2026 ()
Where
30 km (19 mi) south of Centennial Park, AZ · earthquakes near Centennial Park
Magnitude
M 2.9 (ml)
Depth
12 km below the surface
Felt
no reports yet
Nearest
Washington County, 75 km NNW
Nearest mapped fault
Sevier/Toroweap fault, 7 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 170 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 30 km (19 mi) from the epicentre. In Centennial Park, 30 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.

How big was it?

This earthquake released about 680 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 22,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 16,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.4× the energy of this one
  4. This earthquake M 2.9 about 680 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 4.4 on 2022-09-19 — about 180 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 36.6883, -113.0409. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Washington County, UT 75 km (47 mi) NNW earthquakes near Washington County
Mohave County, AZ 125 km (78 mi) SSW earthquakes near Mohave County
Kane County, UT 127 km (79 mi) ENE earthquakes near Kane County
Coconino County, AZ 148 km (92 mi) SE earthquakes near Coconino County

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

Aftershocks so far

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

  1. 1.1 35 km SSE of Saint George, Utah
  2. 1.4 7 km NE of Hildale, Utah
  3. 1.3 12 km SSW of Kaibab, Arizona
  4. 1.4 10 km SW of Centennial Park, Arizona
  5. 1.4 6 km ENE of Cane Beds, Arizona
  6. 1.4 6 km ENE of Cane Beds, Arizona
  7. 2.1 12 km NE of Hildale, Utah
  8. 1.3 11 km NE of Hildale, Utah
  9. 2.2 17 km S of Cane Beds, Arizona
  10. 2.1 6 km NE of Hildale, Utah
  11. 1.9 11 km NE of Hildale, Utah
  12. 1.5 8 km ENE of Hildale, Utah
  13. 1.6 8 km NNE of Cane Beds, Arizona
  14. 1.9 8 km NNE of Cane Beds, Arizona
  15. 1.7 8 km NNE of Cane Beds, Arizona

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.