QuakeIndex

Earthquake · automatic estimate, may change

M 1.9ml

Earthquake near Alamo, NV

No earthquake was likely felt in Alamo in the 24 hours to 12:59 am PST (08:59 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 1.9 earthquake was recorded 48 km (30 mi) east-southeast of Alamo, NV, at 9:40 pm PST on 22 February 2026 (05:40 UTC), 15 km deep. The magnitude and location are an automatic first estimate and may change.

USGS: 47 km ESE of Alamo, Nevada

9:40 pm PST, Feb 22, 2026 · · 15 km deep · released about 25 lb of TNT

10 km30 km60 km120 km N Lincoln County 57 kmClark County 106 kmWashington County 109 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
9:40 pm PST on 22 February 2026 ()
Where
48 km (30 mi) east-southeast of Alamo, NV · earthquakes near Alamo
Magnitude
M 1.9 (ml)
Depth
15 km below the surface
Felt
no reports yet
Nearest
Lincoln County, 57 km NNW
Status
Automatic — a machine’s first estimate, which may change

USGS · last changed by USGS · we first saw it 263 days ago

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. In Alamo, 48 km away, the estimate is intensity I (not felt). 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 25 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.0 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 600,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 420,000× the energy of this one
  3. Around the size people start to feel M 3.0 38× the energy of this one
  4. This earthquake M 1.9 about 25 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 1,200 times the energy of this one.

Before 2016, the USGS record lists 2 earthquakes of M5 or more within 50 km:

  1. 5.3 37 km SSW of Caliente, Nevada · 18 km NNE of this epicentre
  2. 5.0 43 km SSE of Alamo, Nevada · 30 km WSW 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 37.1391, -114.7070. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Lincoln County, NV 57 km (35 mi) NNW earthquakes near Lincoln County
Clark County, NV 106 km (66 mi) SSW earthquakes near Clark County
Washington County, UT 109 km (68 mi) E earthquakes near Washington County

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

Aftershocks so far

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

  1. 1.6 33 km SSW of Alamo, Nevada
  2. 1.9 20 km SSW of Alamo, Nevada
  3. 1.7 25 km SSW of Alamo, Nevada
  4. 1.6 22 km SSE of Caliente, Nevada
  5. 1.6 50 km S of Caliente, Nevada
  6. 1.6 29 km S of Alamo, Nevada
  7. 1.6 33 km S of Alamo, Nevada
  8. 1.7 21 km ESE of Alamo, Nevada
  9. 1.5 31 km ESE of Alamo, Nevada
  10. 1.8 27 km E of Alamo, Nevada
  11. 1.6 13 km S of Alamo, Nevada
  12. 2.6 44 km NNW of Moapa Town, Nevada
  13. 1.9 27 km SE of Caliente, Nevada
  14. 2.7 40 km SE of Alamo, Nevada
  15. 1.7 15 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

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.