Earthquake · reviewed by a seismologist
M 1.6ml
Earthquake near Winchester, NV
No earthquake was likely felt in Winchester in the 24 hours to 5:13 am PST (13:13 UTC). The last one was M 2.3, 15 km (9 mi) S, at 10:15 am PDT on 23 October 2026, estimated intensity II (weak) in town. Every earthquake near Winchester
This page: a magnitude 1.6 earthquake was recorded in Winchester, NV, at 3:48 pm PDT on 21 July 2023 (22:48 UTC), 13 km deep.
USGS: 1 km WSW of Winchester, Nevada
17 km (10 mi) SE of Las Vegas, NV · 16 km (10 mi) NW of Henderson, NV
- When
- 3:48 pm PDT on 21 July 2023 ()
- Where
- in Winchester, NV · earthquakes near Winchester
- Magnitude
- M 1.6 (ml)
- Depth
- 13 km below the surface
- Felt
- no reports yet
- Nearest
- Clark County, 14 km NE
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 1211 days ago
Earthquake alerts for Winchester, NV
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Alerts are on for .
Not a warning. An alert comes after USGS publishes a quake, usually minutes after the shaking. For early warning use ShakeAlert, through your phone's Wireless Emergency Alerts or the MyShake app.
This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.
At this magnitude and depth it was probably too small to be felt, even directly above it. 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: Paradise, Las Vegas, North Las Vegas, Whitney, Spring Valley, Sunrise Manor.
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.
- Mineral, Virginia 2011 M 5.8 2,000,000× the energy of this one
- Magna, Utah 2020 M 5.7 1,400,000× the energy of this one
- Around the size people start to feel M 3.0 130× the energy of this one
- 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:
- 5.0 1 km SE of Boulder City, Nevada · 33 km ESE 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 36.1268, -115.1319. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Clark County, NV | 14 km (9 mi) | NE | earthquakes near Clark County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
56 earthquakes have been recorded within 50 km since this one.
- 1.7 25 km NE of Boulder City, Nevada
- 1.9 17 km NE of Boulder City, Nevada
- 2.0 27 km E of Goodsprings, Nevada
- 1.7 12 km NNE of Summerlin South, Nevada
- 1.9 27 km N of Nellis Air Force Base, Nevada
- 1.6 11 km ENE of Henderson, Nevada
- 1.6 10 km SW of Enterprise, Nevada
- 1.6 9 km NE of Whitney, Nevada
- 1.7 16 km NNE of Summerlin South, Nevada
- 1.5 1 km WNW of Spring Valley, Nevada
- 1.9 17 km NW of North Las Vegas, Nevada
- 1.6 10 km SSE of Enterprise, Nevada
- 1.6 6 km N of Mount Charleston, Nevada
- 1.7 9 km ENE of Whitney, Nevada
- 2.1 9 km NW of Blue Diamond, 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
- The official USGS event page — the source of record for every value above
- Did you feel it? Report it to USGS — reports go to USGS, not to us
- ShakeMap for this event, when USGS has produced one
QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.