Earthquake · reviewed by a seismologist
M 1.6ml
Earthquake near South Pasadena, CA
No earthquake was likely felt in South Pasadena in the 24 hours to 11:43 am PST (19:43 UTC). The last one was M 3.2, 37 km (23 mi) S, at 12:44 am PDT on 9 October 2026, estimated intensity II (weak) in town; 1,090 felt reports to USGS. Every earthquake near South Pasadena
This page: a magnitude 1.6 earthquake was recorded 5 km (3 mi) south-southwest of South Pasadena, CA, at 4:12 pm PDT on 22 October 2024 (23:12 UTC), 12 km deep.
USGS: 5 km SSW of South Pasadena, CA
23 km (14 mi) ENE of Los Angeles, CA · in Alhambra, CA
- When
- 4:12 pm PDT on 22 October 2024 ()
- Where
- 5 km (3 mi) south-southwest of South Pasadena, CA · earthquakes near South Pasadena
- Magnitude
- M 1.6 (ml)
- Depth
- 12 km below the surface
- Felt
- no reports yet
- Nearest
- Los Angeles County, 15 km NNW
- Nearest mapped fault
- Hollywood 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 750 days ago
Earthquake alerts for South Pasadena, CA
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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 South Pasadena, 5 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.
Earthquakes near other towns within 30 km: Alhambra, Monterey Park, East Los Angeles, San Gabriel, Los Angeles, San Marino.
How big was it?
This earthquake released about 7.8 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 1,900,000× 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 3.0 120× the energy of this one
- This earthquake M 1.6 about 7.8 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 4.5 on 2020-09-19 — about 25,000 times the energy of this one.
Before 2016, the USGS record lists 21 earthquakes of M5 or more within 50 km; the five largest:
- 6.7 Northridge, California, earthquake · 36 km WNW of this epicentre
- 6.6 1971 San Fernando Earthquake, California · 41 km NNW of this epicentre
- 5.9 The 1987 Whittier Narrows, California Earthquake · 9 km ESE of this epicentre
- 5.9 1km ENE of Granada Hills, California · 36 km NW of this epicentre
- 5.8 10km SSW of Agua Dulce, CA · 41 km NNW 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 34.0808, -118.1758. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Los Angeles County, CA | 15 km (9 mi) | NNW | earthquakes near Los Angeles County |
| Orange County, CA | 58 km (36 mi) | SE | earthquakes near Orange County |
| Ventura County, CA | 93 km (58 mi) | WNW | earthquakes near Ventura 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.
- 1.8 0 km S of Vincent, CA
- 2.7 13 km S of Malibu Beach, CA
- 1.7 1 km SSE of Montclair, CA
- 1.6 5 km NNW of East Los Angeles, CA
- 2.2 0 km N of Lennox, CA
- 1.6 10 km S of Las Flores, CA
- 2.2 8 km SSW of Littlerock, CA
- 2.3 2 km SW of Baldwin Hills, CA
- 2.3 6 km SW of Marina del Rey, CA
- 1.5 5 km WSW of Marina del Rey, CA
- 1.7 2 km SSW of Baldwin Hills, CA
- 1.5 3 km SW of Baldwin Hills, CA
- 1.7 2 km ESE of Rossmoor, CA
- 2.0 3 km SW of Culver City, CA
- 1.5 3 km SSW of Willowbrook, 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.