Earthquake · reviewed by a seismologist
M 1.6ml
Earthquake near Rosemead, CA
No earthquake was likely felt in Rosemead in the 24 hours to 5:50 am PST (13:50 UTC). The last one was M 3.2, 34 km (21 mi) SSW, at 12:44 am PDT on 9 October 2026, estimated intensity II (weak) in town; 1,090 felt reports to USGS. Every earthquake near Rosemead
This page: a magnitude 1.6 earthquake was recorded in Rosemead, CA, at 10:43 am PDT on 29 March 2024 (17:43 UTC), 11 km deep.
USGS: 1 km SW of Rosemead, CA
in El Monte, CA · 31 km (19 mi) ENE of Los Angeles, CA
- When
- 10:43 am PDT on 29 March 2024 ()
- Where
- in Rosemead, CA · earthquakes near Rosemead
- Magnitude
- M 1.6 (ml)
- Depth
- 11 km below the surface
- Felt
- no reports yet
- Nearest
- Los Angeles County, 21 km NW
- Nearest mapped fault
- Raymond fault, 6 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 958 days ago
Earthquake alerts for Rosemead, CA
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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 2 km (1 mi) from the epicentre. 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.
Likely felt in: Rosemead in town, intensity II. Estimated for each town centre; each link is that town's own record.
How big was it?
This earthquake released about 6.4 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 2,400,000× the energy of this one
- Magna, Utah 2020 M 5.7 1,700,000× the energy of this one
- Around the size people start to feel M 3.0 150× the energy of this one
- This earthquake M 1.6 about 6.4 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 4.5 on 2020-09-19 — about 31,000 times the energy of this one.
Before 2016, the USGS record lists 19 earthquakes of M5 or more within 50 km; the five largest:
- 6.7 Northridge, California, earthquake · 45 km WNW of this epicentre
- 6.6 1971 San Fernando Earthquake, California · 46 km NW of this epicentre
- 6.4 The 1933 Long Beach, California Earthquake · 50 km S of this epicentre
- 5.9 The 1987 Whittier Narrows, California Earthquake · 1 km SSE of this epicentre
- 5.9 1km ENE of Granada Hills, California · 44 km WNW 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 34.0738, -118.0822. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Los Angeles County, CA | 21 km (13 mi) | NW | earthquakes near Los Angeles County |
| Orange County, CA | 52 km (33 mi) | SSE | earthquakes near Orange County |
| Ventura County, CA | 102 km (63 mi) | WNW | earthquakes near Ventura County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
30 earthquakes have been recorded within 50 km since this one.
- 1.9 3 km N of East Los Angeles, CA
- 2.2 8 km NNW of Rancho Cucamonga, CA
- 2.8 4 km SSE of Highland Park, CA
- 3.4 4 km SW of South Pasadena, CA
- 1.8 8 km SW of Corona, CA
- 1.9 4 km NNE of El Segundo, CA
- 1.9 4 km NE of North Tustin, CA
- 1.7 9 km N of Rancho Cucamonga, CA
- 1.7 9 km SW of Corona, CA
- 1.8 10 km NNW of Rancho Cucamonga, CA
- 1.7 9 km SW of Corona, CA
- 1.6 8 km SSW of Pearblossom, CA
- 1.7 2 km NNW of Palos Verdes Estates, CA
- 2.1 9 km SW of Corona, CA
- 1.9 9 km SW of Corona, 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.