Every recorded earthquake within 30 km
Earthquakes near Monrovia, CA
M 3.4
Latest: 5:11 pm PDT on 6 September 2025 · 23 km (14 mi) ENE of Monrovia, CA
The most recent earthquake of M2.5 or more near Monrovia was M 3.4, 23 km (14 mi) ENE of Monrovia, CA, at 5:11 pm PDT on 6 September 2025. 549 people reported feeling it to USGS. 22 smaller earthquakes have been recorded nearby since; the newest is first in the list below.
- Within 30 km since 2016
- 329 earthquakes of M1.5 or more
- In the last 12 months
- 21
- Largest since 2016
- M 4.5 on 18 September 2020, 14 km (9 mi) SSW of Monrovia, CA
- Reported felt
- 143 of them have felt reports to USGS
USGS · feed checked · newest earthquake in our database · this page
The latest 50
- 1.5 5 km (3 mi) S of Monrovia, CA
- 1.6 24 km (15 mi) SSE of Monrovia, CA
- 1.9 27 km (17 mi) SW of Monrovia, CA
- 1.7 21 km (13 mi) E of Monrovia, CA
- 1.6 23 km (14 mi) W of Monrovia, CA
- 2.0 26 km (16 mi) SSE of Monrovia, CA · felt by 10
- 1.6 25 km (15 mi) SSW of Monrovia, CA
- 1.7 30 km (18 mi) SSE of Monrovia, CA
- 1.8 17 km (10 mi) S of Monrovia, CA
- 2.0 20 km (12 mi) E of Monrovia, CA
- 1.6 25 km (16 mi) E of Monrovia, CA · felt by 1
- 1.7 15 km (9 mi) WNW of Monrovia, CA
- 1.5 26 km (16 mi) SSE of Monrovia, CA
- 1.8 9 km (6 mi) SSE of Monrovia, CA
- 1.7 23 km (14 mi) ESE of Monrovia, CA
- 1.8 6 km (4 mi) SSE of Monrovia, CA
- 1.7 20 km (12 mi) E of Monrovia, CA
- 1.9 21 km (13 mi) ESE of Monrovia, CA · felt by 1
- 1.8 16 km (10 mi) E of Monrovia, CA
- 1.7 27 km (16 mi) WSW of Monrovia, CA
- 2.1 26 km (16 mi) WSW of Monrovia, CA · felt by 25
- 1.5 25 km (16 mi) S of Monrovia, CA
- 3.4 23 km (14 mi) ENE of Monrovia, CA · felt by 549
- 1.7 29 km (18 mi) SSE of Monrovia, CA
- 2.4 25 km (15 mi) S of Monrovia, CA · felt by 181
- 1.5 27 km (16 mi) SW of Monrovia, CA
- 2.2 28 km (17 mi) SW of Monrovia, CA · felt by 11
- 1.6 7 km (4 mi) N of Monrovia, CA
- 1.6 22 km (14 mi) E of Monrovia, CA
- 1.8 5 km (3 mi) SE of Monrovia, CA
- 2.5 29 km (18 mi) SW of Monrovia, CA · felt by 36
- 1.7 6 km (4 mi) WNW of Monrovia, CA
- 1.6 6 km (4 mi) WNW of Monrovia, CA
- 1.9 23 km (15 mi) S of Monrovia, CA · felt by 8
- 1.7 5 km (3 mi) SE of Monrovia, CA
- 1.7 30 km (18 mi) SW of Monrovia, CA
- 1.6 22 km (14 mi) ESE of Monrovia, CA
- 1.8 28 km (18 mi) SW of Monrovia, CA · felt by 1
- 1.6 25 km (15 mi) SSE of Monrovia, CA · felt by 2
- 1.6 19 km (12 mi) WSW of Monrovia, CA
- 1.5 19 km (12 mi) WSW of Monrovia, CA · felt by 1
- 1.6 3 km (2 mi) NW of Monrovia, CA
- 2.8 17 km (10 mi) WSW of Monrovia, CA · felt by 261
- 1.6 17 km (11 mi) WSW of Monrovia, CA · felt by 1
- 2.3 19 km (12 mi) WSW of Monrovia, CA · felt by 48
- 1.7 19 km (12 mi) WSW of Monrovia, CA
- 1.7 20 km (12 mi) WSW of Monrovia, CA
- 2.8 18 km (11 mi) WSW of Monrovia, CA · felt by 214
- 1.7 19 km (12 mi) WSW of Monrovia, CA
- 1.5 18 km (11 mi) WSW of Monrovia, CA
From the QuakeIndex database, which reads the USGS feed every 30 seconds and holds the USGS catalogue for the US from 2016 (M1.5+). Times are Monrovia time. Distances are from the town centre. Quakes USGS named after Monrovia are listed even when they are further out.
On the map
The white circle is Monrovia; dots are the 50 most recent earthquakes within 30 km. Map © OpenStreetMap contributors.
Estimated shaking in Monrovia
The strongest shaking in Monrovia from a quake since 2016 is estimated at intensity IV (light), from the M 4.5 on 18 September 2020, 14 km away. Intensity II and III are felt by some people at rest indoors; IV by most people indoors; V and above wakes sleepers and moves objects.
| Magnitude | When | Distance | Shaking in Monrovia (est.) |
|---|---|---|---|
| M 4.5 | 14 km | IV · Light · felt by 21,402 | |
| M 4.4 | 18 km | IV · Light · felt by 24,250 | |
| M 4.4 | 21 km | IV · Light · felt by 6,155 | |
| M 3.1 | 7 km | III · Weak · felt by 120 | |
| M 3.4 | 18 km | III · Weak · felt by 3,589 |
An estimate for the town centre from magnitude, depth and distance, with the intensity equation USGS Did You Feel It? uses (Atkinson & Wald, 2007), on the Modified Mercalli scale. All 5 reach intensity II or more in town, where people at rest start to notice. Ground conditions change it street by street. It describes the past, not a hazard.
Before 2016
The USGS record since 1900 lists 18 earthquakes of M5 or more within 50 km of Monrovia; the five largest:
- 6.6 1971 San Fernando Earthquake, California · 45 km NW of Monrovia
- 5.9 The 1987 Whittier Narrows, California Earthquake · 12 km SW of Monrovia
- 5.9 1km ENE of Granada Hills, California · 48 km WNW of Monrovia
- 5.8 10km SSW of Agua Dulce, CA · 45 km NW of Monrovia
- 5.8 10km SSW of Agua Dulce, CA · 45 km NW of Monrovia
USGS ComCat, M5+ from 1900 to 2015. This is the record, not a forecast.
Nearest mapped faults
- Raymond fault, 1 km from its surface trace
- Sierra Madre fault, 2 km from its surface trace
- San Gabriel fault, 10 km from its surface trace
USGS Quaternary Fault and Fold Database. Near is not the same as on.
Be ready
Earthquakes cannot be predicted, here or anywhere, so the useful step is the one taken beforehand. The advice below is from the agencies responsible for it.
- Ready.gov: earthquakes (FEMA) — what to do before, during and after, including Drop, Cover, and Hold On
- Build a kit (FEMA) — water, food and supplies for several days; our summary
- USGS: preparedness — the hazard behind the advice, from the agency that records every quake on this page
- The Great ShakeOut — the yearly earthquake drill, with material for homes, schools and workplaces
- ShakeAlert covers Monrovia, CA: alerts reach phones through Wireless Emergency Alerts and the MyShake app, seconds before shaking arrives
- Tsunami.gov (NOAA) — the official tsunami warnings for the coast; a quake page here never stands in for one
- California Earthquake Authority — retrofit grants and the state's not-for-profit earthquake insurance
If you felt one
- Was that an earthquake? — checks what was recorded near you in the last hour
- Report what you felt to USGS — reports go to USGS, not to us
- Earthquakes in California, with the state's activity score
QuakeIndex does not issue warnings or forecasts. For earthquake early warning see ShakeAlert and the MyShake app.