Every recorded earthquake within 30 km
Earthquakes near Los Serranos, CA
No earthquake was likely felt in Los Serranos in the 24 hours to 9:13 pm PST (05:13 UTC). The last one was M 1.9, 12 km (8 mi) ENE, at 12:52 pm PDT on 3 October 2026, estimated intensity II (weak) in town.
M 2.7
Latest: 1:09 am PDT on 8 October 2026 · 25 km (16 mi) NE of Los Serranos, CA
The most recent earthquake of M2.5 or more near Los Serranos was M 2.7, 25 km (16 mi) NE of Los Serranos, CA, at 1:09 am PDT on 8 October 2026, 6 km deep. 158 people reported feeling it to USGS. The estimated shaking in Los Serranos was intensity II (weak), felt by some people at rest indoors. 11 smaller earthquakes have been recorded near Los Serranos since; the newest is first in the list below.
No earthquake of M1.5 or more was recorded within 30 km (19 mi) of Los Serranos in the last 24 hours.
- Last 24 hours
- 0
- Last 7 days
- 2
- Last 30 days
- 8 · an average 30 days here since 2016: 11
- Last 12 months
- 89 · largest M 3.2 on 2 September 2026
- Since 2016
- 1,441 earthquakes of M1.5 or more within 30 km
- Largest since 2016
- M 4.4 on 28 August 2018, 19 km (12 mi) NNW of Los Serranos, CA
- Reported felt
- 568 of them have felt reports to USGS
- Nearest mapped fault
- Elsinore fault, 10 km from its surface trace
USGS · feed checked · newest earthquake in our database · this page · counts are earthquakes of M1.5 or more within 30 km (19 mi) of the town centre; shaking is estimated for the town centre with the intensity equation USGS Did You Feel It? uses
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, and they are what produces the intensity maps
- Expect aftershocks, and be ready to Drop, Cover, and Hold On if you feel one; if you are in a damaged building, go outside and move away from it (Ready.gov, FEMA; what to do during and after an earthquake)
- Near the coast, go inland or to higher ground as soon as strong shaking stops (Ready.gov); official warnings are on Tsunami.gov
- 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.
Earthquake alerts for Los Serranos, CA
Get a notification in this browser when USGS records an earthquake near Los Serranos, 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.
The last 30 days
The latest 50
- 1.6 26 km (16 mi) SE of Los Serranos, CA
- 1.8 24 km (15 mi) SE of Los Serranos, CA
- 1.8 13 km (8 mi) SSW of Los Serranos, CA
- 1.5 18 km (11 mi) SW of Los Serranos, CA
- 1.6 25 km (15 mi) NE of Los Serranos, CA
- 1.6 25 km (16 mi) NE of Los Serranos, CA
- 2.0 25 km (16 mi) NE of Los Serranos, CA · felt by 3
- 1.7 24 km (15 mi) SE of Los Serranos, CA
- 1.5 26 km (16 mi) ENE of Los Serranos, CA
- 1.7 12 km (8 mi) ENE of Los Serranos, CA
- 1.5 30 km (19 mi) WNW of Los Serranos, CA
- 2.7 25 km (16 mi) NE of Los Serranos, CA · felt by 158
- 1.5 25 km (16 mi) NE of Los Serranos, CA
- 2.1 29 km (18 mi) NE of Los Serranos, CA · felt by 1
- 1.9 12 km (8 mi) ENE of Los Serranos, CA
- 1.7 13 km (8 mi) ENE of Los Serranos, CA
- 1.5 24 km (15 mi) SE of Los Serranos, CA
- 1.6 21 km (13 mi) W of Los Serranos, CA
- 1.6 24 km (15 mi) SE of Los Serranos, CA
- 1.8 20 km (12 mi) S of Los Serranos, CA
- 1.5 12 km (8 mi) ENE of Los Serranos, CA
- 3.2 12 km (7 mi) ENE of Los Serranos, CA · felt by 730
- 1.7 27 km (17 mi) NE of Los Serranos, CA
- 1.7 24 km (15 mi) SE of Los Serranos, CA
- 1.7 17 km (11 mi) NNW of Los Serranos, CA
- 1.6 27 km (17 mi) SE of Los Serranos, CA
- 1.6 12 km (8 mi) ENE of Los Serranos, CA
- 2.8 12 km (7 mi) ENE of Los Serranos, CA · felt by 128
- 2.3 29 km (18 mi) SE of Los Serranos, CA · felt by 19
- 2.0 17 km (10 mi) WSW of Los Serranos, CA · felt by 10
- 2.1 16 km (10 mi) SSE of Los Serranos, CA · felt by 4
- 1.6 16 km (10 mi) SSE of Los Serranos, CA
- 2.2 16 km (10 mi) SSE of Los Serranos, CA · felt by 11
- 3.0 16 km (10 mi) SSE of Los Serranos, CA · felt by 402
- 1.6 16 km (10 mi) SSE of Los Serranos, CA
- 1.5 12 km (8 mi) ENE of Los Serranos, CA
- 1.5 27 km (17 mi) SE of Los Serranos, CA
- 1.8 25 km (15 mi) SE of Los Serranos, CA
- 1.8 25 km (15 mi) SE of Los Serranos, CA
- 1.7 18 km (11 mi) WSW of Los Serranos, CA
- 1.7 24 km (15 mi) SE of Los Serranos, CA
- 1.5 27 km (17 mi) SE of Los Serranos, CA
- 1.8 24 km (15 mi) W of Los Serranos, CA
- 1.8 24 km (15 mi) SE of Los Serranos, CA
- 1.6 27 km (17 mi) SE of Los Serranos, CA
- 1.7 16 km (10 mi) WSW of Los Serranos, CA
- 1.6 24 km (15 mi) SE of Los Serranos, CA
- 2.0 22 km (13 mi) NNW of Los Serranos, CA
- 1.8 24 km (15 mi) SE of Los Serranos, CA
- 1.5 26 km (16 mi) SE of Los Serranos, 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 Los Serranos time. Distances are from the town centre. Quakes USGS named after Los Serranos are listed even when they are further out.
Show these earthquakes on your own site: a free card with the latest quakes near Los Serranos, for a local news site, school or neighborhood page.
On the map
The white circle is Los Serranos; dots are the 50 most recent earthquakes within 30 km. Map © OpenStreetMap contributors.
Estimated shaking in Los Serranos
The strongest shaking in Los Serranos from a quake since 2016 is estimated at intensity IV (light), from the M 4.4 on 28 August 2018, 19 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 Los Serranos (est.) |
|---|---|---|---|
| M 4.4 | 19 km | IV · Light · felt by 6,155 | |
| M 4.0 | 12 km | IV · Light · felt by 6,217 | |
| M 4.0 | 12 km | IV · Light · felt by 2,758 | |
| M 4.1 | 19 km | III · Weak · felt by 8,407 | |
| M 3.6 | 12 km | III · Weak · felt by 2,926 |
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 16 earthquakes of M5 or more within 50 km of Los Serranos; the five largest:
- 6.4 The 1933 Long Beach, California Earthquake · 47 km SW of Los Serranos
- 6.2 3 km SE of San Bernardino, California · 43 km ENE of Los Serranos
- 6.0 The 1910 Lake Elsinore, California Earthquake · 42 km SE of Los Serranos
- 5.9 The 1987 Whittier Narrows, California Earthquake · 36 km WNW of Los Serranos
- 5.8 The 1991 Sierra Madre, California Earthquake · 42 km NW of Los Serranos
USGS ComCat, M5+ from 1900 to 2015. This is the record, not a forecast.
Nearest mapped faults
- Elsinore fault, 10 km from its surface trace
- Puente Hills blind thrust system, 17 km from its surface trace
- Sierra Madre fault, 17 km from its surface trace
USGS Quaternary Fault and Fold Database. Near is not the same as on.
Nearby towns
Chino 5 km · Chino Hills 5 km · Pomona 10 km · Diamond Bar 11 km · Ontario 11 km · Montclair 12 km · Eastvale 13 km · Yorba Linda 13 km
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 Los Serranos, 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
QuakeIndex does not issue warnings or forecasts. For earthquake early warning see ShakeAlert and the MyShake app.