QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8ml

Earthquake near Summerlin South, NV

No earthquake was likely felt in Summerlin South in the 24 hours to 9:03 am PST (17:03 UTC). The last one was M 1.7, 11 km (7 mi) NNW, at 3:41 pm PDT on 20 October 2026, estimated intensity II (weak) in town. Every earthquake near Summerlin South

This page: a magnitude 1.8 earthquake was recorded 18 km (11 mi) north of Summerlin South, NV, at 3:13 pm PDT on 4 November 2022 (22:13 UTC), 4.2 km deep.

USGS: 18 km N of Summerlin South, Nevada

11 km (7 mi) WNW of Las Vegas, NV

3:13 pm PDT, Nov 4, 2022 · · 4.2 km deep · released about 15 lb of TNT

Every earthquake near Summerlin South Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Clark County 33 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
3:13 pm PDT on 4 November 2022 ()
Where
18 km (11 mi) north of Summerlin South, NV · earthquakes near Summerlin South
Magnitude
M 1.8 (ml)
Depth
4.2 km below the surface
Felt
no reports yet
Nearest
Clark County, 33 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1470 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 Summerlin South, 18 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.

Earthquakes near other towns within 30 km: Spring Valley, Las Vegas, North Las Vegas, Sunrise Manor, Winchester, Nellis Air Force Base.

How big was it?

This earthquake released about 15 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 710,000× the energy of this one
  3. Around the size people start to feel M 3.0 63× the energy of this one
  4. This earthquake M 1.8 about 15 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 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 36.2791, -115.3697. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Clark County, NV 33 km (20 mi) ESE earthquakes near Clark County

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

Aftershocks so far

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

  1. 1.7 26 km N of Nellis Air Force Base, Nevada
  2. 1.6 15 km NE of Mount Charleston, Nevada
  3. 1.8 8 km SSW of Whitney, Nevada
  4. 2.3 3 km SSW of Enterprise, Nevada
  5. 1.9 8 km SE of Enterprise, Nevada
  6. 1.9 22 km ESE of Indian Springs, Nevada
  7. 1.6 21 km ESE of Indian Springs, Nevada
  8. 1.9 9 km SSE of Enterprise, Nevada
  9. 2.4 3 km ENE of Blue Diamond, Nevada
  10. 2.2 20 km NE of Nellis Air Force Base, Nevada
  11. 1.6 22 km ENE of Nellis Air Force Base, Nevada
  12. 2.1 11 km NE of Nellis Air Force Base, Nevada
  13. 2.1 9 km SSE of Enterprise, Nevada
  14. 1.5 8 km E of Mount Charleston, Nevada
  15. 1.8 2 km NNE of Goodsprings, Nevada

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.