QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6ml

Earthquake near Boulder City, NV

USGS: 25 km NE of Boulder City, Nevada

57 km (36 mi) E of Las Vegas, NV · 38 km (24 mi) ENE of Henderson, NV

9:05 pm PDT, Mar 28, 2017 · · 0.0 km deep · released about 7.6 lb of TNT

Every earthquake near Boulder City Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Clark County 35 kmMohave County 93 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
9:05 pm PDT on 28 March 2017 ()
Where
26 km (16 mi) NE of Boulder City, NV · earthquakes near Boulder City
Magnitude
M 1.6 (ml)
Depth
0.0 km below the surface
Felt
no reports yet
Nearest
Clark County, 35 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3014 days ago

A magnitude 1.6 earthquake was recorded 26 km (16 mi) NE of Boulder City, NV, at 9:05 pm PDT on 28 March 2017 (04:05 UTC). This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 7.6 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,400,000× the energy of this one
  3. Around the size people start to feel M 3.0 130× the energy of this one
  4. This earthquake M 1.6 about 7.6 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. 5.0 1 km SE of Boulder City, Nevada · 26 km SW 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 36.1475, -114.6359. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Clark County, NV 35 km (22 mi) WNW earthquakes near Clark County
Mohave County, AZ 93 km (58 mi) ESE earthquakes near Mohave County

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

Aftershocks so far

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

  1. 2.1 22 km NNE of Nellis Air Force Base, Nevada
  2. 1.8 24 km NNE of Nellis Air Force Base, Nevada
  3. 1.7 8 km E of Nellis Air Force Base, Nevada
  4. 1.7 9 km SW of Henderson, Nevada
  5. 1.5 20 km NE of Nellis Air Force Base, Nevada
  6. 2.2 Nevada
  7. 2.5 Nevada
  8. 1.5 19 km NNE of Nellis Air Force Base, Nevada
  9. 1.5 13 km NE of Nellis Air Force Base, Nevada
  10. 2.3 18 km NE of Nellis Air Force Base, Nevada
  11. 2.0 17 km NE of Nellis Air Force Base, Nevada
  12. 1.6 15 km NE of Nellis Air Force Base, Nevada
  13. 1.6 5 km SE of Henderson, Nevada
  14. 1.9 14 km ENE of Boulder City, Nevada
  15. 1.6 22 km NE of Nellis Air Force Base, 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.