Earthquake · automatic estimate, may change
M 1.5ml
Earthquake near Alamo, NV
No earthquake was likely felt in Alamo in the 24 hours to 6:54 am PST (14:54 UTC). The last one was M 3.6, 33 km (21 mi) SSW, at 12:44 am PDT on 30 April 2026, estimated intensity II (weak) in town. Every earthquake near Alamo
This page: a magnitude 1.5 earthquake was recorded 21 km (13 mi) east of Alamo, NV, at 5:58 pm PDT on 20 October 2025 (00:58 UTC), 4.1 km deep. The magnitude and location are an automatic first estimate and may change.
USGS: 21 km E of Alamo, Nevada
- When
- 5:58 pm PDT on 20 October 2025 ()
- Where
- 21 km (13 mi) east of Alamo, NV · earthquakes near Alamo
- Magnitude
- M 1.5 (ml)
- Depth
- 4.1 km below the surface
- Felt
- no reports yet
- Nearest
- Lincoln County, 33 km N
- Status
- Automatic — a machine’s first estimate, which may change
USGS · last changed by USGS · we first saw it 388 days ago
Earthquake alerts for Alamo, NV
Get a notification in this browser when USGS records an earthquake near Alamo, NV. No account or email needed.
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, people at rest would likely notice it out to about 9 km (6 mi) from the epicentre. In Alamo, 21 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 5.4 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 2,800,000× the energy of this one
- Magna, Utah 2020 M 5.7 2,000,000× the energy of this one
- Around the size people start to feel M 3.0 180× the energy of this one
- This earthquake M 1.5 about 5.4 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 4.0 on 2025-06-06 — about 5,600 times the energy of this one.
Before 2016, the USGS record lists 2 earthquakes of M5 or more within 50 km:
- 5.3 37 km SSW of Caliente, Nevada · 25 km ESE of this epicentre
- 5.0 43 km SSE of Alamo, Nevada · 39 km S 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 37.3431, -114.9275. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Lincoln County, NV | 33 km (20 mi) | N | earthquakes near Lincoln County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
58 earthquakes have been recorded within 50 km since this one.
- 1.5 38 km SSW of Alamo, Nevada
- 1.8 30 km SSW of Alamo, Nevada
- 3.6 33 km SSW of Alamo, Nevada
- 2.6 29 km SSW of Alamo, Nevada
- 1.6 28 km E of Alamo, Nevada
- 1.5 31 km SSW of Alamo, Nevada
- 1.7 43 km SSW of Caliente, Nevada
- 1.6 29 km SSW of Alamo, Nevada
- 2.8 30 km SSW of Alamo, Nevada
- 1.5 25 km SW of Alamo, Nevada
- 1.8 30 km SSW of Alamo, Nevada
- 3.2 29 km SSW of Alamo, Nevada
- 1.6 30 km SSW of Alamo, Nevada
- 1.7 52 km S of Caliente, Nevada
- 4.4 30 km SSW of Alamo, 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.