QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0ml

Earthquake near Beaver Dam, AZ

No earthquake was likely felt in Beaver Dam in the 24 hours to 12:29 pm MST (19:29 UTC). The last one was M 4.4, 124 km (77 mi) WNW, at 8:06 am MST on 29 April 2026, estimated intensity II (weak) in town; 114 felt reports to USGS. Every earthquake near Beaver Dam

This page: a magnitude 3.0 earthquake was recorded 15 km (9 mi) northeast of Beaver Dam, AZ, at 7:49 pm MST on 2 May 2018 (02:49 UTC), 13 km deep. 3 people have reported feeling it to USGS.

USGS: 14 km NE of Beaver Dam, Arizona

24 km (15 mi) WSW of St. George, UT

7:49 pm MST, May 2, 2018 · · 13 km deep · released about 920 lb of TNT

Every earthquake near Beaver Dam Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Washington County 42 kmIron County 111 kmLincoln County 115 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
7:49 pm MST on 2 May 2018 ()
Where
15 km (9 mi) northeast of Beaver Dam, AZ · earthquakes near Beaver Dam
Magnitude
M 3.0 (ml)
Depth
13 km below the surface
Felt
3 reports · strongest reported intensity II
Measured shaking
intensity III (ShakeMap)
Nearest
Washington County, 42 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1559 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 34 km (21 mi) from the epicentre. In Beaver Dam, 15 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 24 km, intensity II · Mesquite 31 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 920 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 6.7 370,000× 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 12,000× the energy of this one
  4. This earthquake M 3.0 about 920 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 one earthquake of M5 or more within 50 km:

  1. 5.9 3 km SSE of Washington, Utah · 31 km ENE 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 37.0062, -113.8295. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Washington County, UT 42 km (26 mi) NE earthquakes near Washington County
Iron County, UT 111 km (69 mi) NNE earthquakes near Iron County
Lincoln County, NV 115 km (71 mi) NW earthquakes near Lincoln County
Clark County, NV 138 km (86 mi) SW earthquakes near Clark County

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

Aftershocks so far

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

  1. 1.8 15 km SSE of Saint George, Utah
  2. 1.6 9 km S of Saint George, Utah
  3. 1.7 3 km NE of Beaver Dam, Arizona
  4. 1.8 16 km SSE of Saint George, Utah
  5. 1.5 8 km S of Saint George, Utah
  6. 2.6 15 km SSE of Saint George, Utah
  7. 2.0 24 km SSE of Washington, Utah
  8. 1.7 35 km SSE of Saint George, Utah
  9. 1.8 15 km SSE of Saint George, Utah
  10. 2.2 10 km S of Washington, Utah
  11. 1.9 15 km SSE of Saint George, Utah
  12. 2.4 17 km SSE of Saint George, Utah
  13. 1.5 15 km SSE of Saint George, Utah
  14. 2.2 17 km SSE of Saint George, Utah
  15. 1.7 16 km WNW of Veyo, 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.