Earthquake · reviewed by a seismologist
M 2.5ml
Earthquake near Fort Irwin, CA
No earthquake was likely felt in Fort Irwin in the 24 hours to 10:28 am PST (18:28 UTC). The last one was M 4.3, 103 km (64 mi) W, at 9:40 am PDT on 13 July 2026, estimated intensity II (weak) in town; 1,090 felt reports to USGS. Every earthquake near Fort Irwin
This page: a magnitude 2.5 earthquake was recorded 44 km (27 mi) northeast of Fort Irwin, CA, at 4:04 am PDT on 7 October 2019 (11:04 UTC), 2.0 km deep.
USGS: 36km NW of Baker, CA
- When
- 4:04 am PDT on 7 October 2019 ()
- Where
- 44 km (27 mi) northeast of Fort Irwin, CA · earthquakes near Fort Irwin
- Magnitude
- M 2.5 (ml)
- Depth
- 2.0 km below the surface
- Felt
- no reports yet
- Nearest
- San Bernardino County, 75 km S
- Nearest mapped fault
- Garlock fault, 4 km from its surface trace — near is not the same as on
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 759 days ago
Earthquake alerts for Fort Irwin, CA
Get a notification in this browser when USGS records an earthquake near Fort Irwin, CA. 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 small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.
At this magnitude and depth, people at rest would likely notice it out to about 22 km (14 mi) from the epicentre. In Fort Irwin, 44 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 180 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 86,000× the energy of this one
- Magna, Utah 2020 M 5.7 61,000× the energy of this one
- Around the size people start to feel M 3.0 5.4× the energy of this one
- This earthquake M 2.5 about 180 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 35.5207, -116.3165. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| San Bernardino County, CA | 75 km (47 mi) | S | earthquakes near San Bernardino County |
| Clark County, NV | 140 km (87 mi) | ENE | earthquakes near Clark County |
| Inyo County, CA | 152 km (94 mi) | NW | earthquakes near Inyo County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
32 earthquakes have been recorded within 50 km since this one.
- 2.0 23 km ESE of Tecopa, California
- 2.0 34 km NE of Fort Irwin, CA
- 1.5 10 km NE of Tecopa, California
- 1.6 17 km ENE of Baker, California
- 1.8 35 km WSW of Tecopa, CA
- 2.0 24km SSW of Tecopa, CA
- 1.7 24km SE of Fort Irwin, CA
- 1.8 38km WSW of Tecopa, CA
- 2.3 24km WSW of Baker, CA
- 2.1 24km WSW of Baker, CA
- 1.9 28km S of Tecopa, CA
- 2.6 35km SE of Tecopa, CA
- 2.0 40km WSW of Tecopa, CA
- 1.6 15 km ENE of Tecopa, California
- 2.7 33km SW of Tecopa, CA
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.