Live earthquake check
Earthquakes near Simi Valley today
Updated
No M2.5+ earthquake within 100 km of Simi Valley in the last 24 hours 1 smaller quake (largest M1.2) were recorded within 100 km; the latest 21 hours ago.
Was there an earthquake in Simi Valley just now? This page checks the live USGS catalogue for quakes around Simi Valley, California, United States and updates every few minutes.
- Last 24 hours
- 0 M2.5+ within 100 km
- Last 7 days
- 0 M2.5+ within 100 km
- Last 30 days
- 4 M2.5+ within 100 km
- Largest in 30 days
- M3.8 14 km N, Sep 30, 2026
- Largest in past year
- M4.3 146 km NE, Jul 13, 2026
- Past year count
- 129 M2.5+ within 150 km
- Nearest in 30 days
- 14 km M3.8, Sep 30, 2026
Recent earthquakes near Simi Valley
USGS recorded 4 earthquakes of magnitude 2.5 or more within 100 km of Simi Valley in the past 30 days, 0 of them in the last 7 days. The most recent was M3.2 77 km SE of the city at Oct 9, 00:44 local time (17 days ago).
The average depth was about 11 km and 4 of 4 were shallow (under 70 km), which are the ones most likely to be felt at the surface.
USGS also lists 1 smaller quake (below M2.5) within 100 km in the last 24 hours; these are rarely felt.
| Time (Simi Valley) | UTC | Magnitude | Distance | Depth | Location |
|---|---|---|---|---|---|
| Oct 9, 00:44 | Oct 9, 07:44 UTC | M3.2 | 77 km SE | 12 km | 2 km SW of Signal Hill, CA |
| Oct 8, 01:09 | Oct 8, 08:09 UTC | M2.7 | 121 km E | 6 km | 2 km WNW of Fontana, CA |
| Oct 5, 15:06 | Oct 5, 22:06 UTC | M2.5 | 136 km SE | 11 km | 31 km SW of Dana Point, CA |
| Oct 5, 13:23 | Oct 5, 20:23 UTC | M2.8 | 136 km SE | 17 km | 32 km SW of Dana Point, CA |
| Oct 5, 13:22 | Oct 5, 20:22 UTC | M3.5 | 136 km SE | 11 km | 31 km SW of Dana Point, CA |
| Oct 5, 08:40 | Oct 5, 15:40 UTC | M2.7 | 92 km W | 9 km | 7 km SE of Goleta, CA |
| Sep 29, 20:00 | Sep 30, 03:00 UTC | M3.8 | 14 km N | 10 km | 4 km SE of Piru, CA |
| Sep 27, 08:40 | Sep 27, 15:40 UTC | M3.6 | 55 km SSE | 12 km | 7 km WSW of Hermosa Beach, CA |
M2.5+ within 150 km, past 30 days, newest first. Times in America/Los_Angeles.
Largest earthquakes near Simi Valley in the past year
The strongest earthquake within 150 km of Simi Valley in the past 12 months was M4.3 on Jul 13, 2026, 146 km NE of the city (18 km WSW of Johannesburg, CA).
With 129 M2.5+ earthquakes in a year (about 10.8 a month), the area around Simi Valley is very active by global standards. 0 of the ten largest reached M4.5, the level at which damage near the epicentre becomes possible.
| Date | Magnitude | Distance | Depth | Location |
|---|---|---|---|---|
| Jul 13, 2026 | M4.3 | 146 km NE | 8 km | 18 km WSW of Johannesburg, CA |
| Jul 12, 2026 | M4.1 | 62 km NNW | 13 km | 2 km ESE of Frazier Park, CA |
| Jun 1, 2026 | M4.1 | 145 km NE | 8 km | 18 km WSW of Johannesburg, CA |
| Sep 30, 2026 | M3.8 | 14 km N | 10 km | 4 km SE of Piru, CA |
| Dec 14, 2025 | M3.6 | 32 km NW | 11 km | 13 km NW of Fillmore, CA |
| Sep 27, 2026 | M3.6 | 55 km SSE | 12 km | 7 km WSW of Hermosa Beach, CA |
| Jan 18, 2026 | M3.6 | 149 km NE | 5 km | 15 km WSW of Johannesburg, CA |
| Jun 17, 2026 | M3.5 | 145 km NE | 8 km | 18 km WSW of Johannesburg, CA |
| Oct 5, 2026 | M3.5 | 136 km SE | 11 km | 31 km SW of Dana Point, CA |
| Jun 6, 2026 | M3.4 | 34 km NW | 25 km | 15 km NW of Fillmore, CA |
Was it felt in Simi Valley?
The largest nearby quake this month, M3.8 at 14 km, was probably felt in Simi Valley by a rough rule of thumb (an M3 is typically noticed within a few tens of km, an M5 up to a few hundred km; local ground and building type matter a lot).
USGS "Did You Feel It?" received reports for 8 of these quakes: M3.2 on Oct 9, 2026 (1091 reports, max intensity 3.4); M2.7 on Oct 8, 2026 (158 reports, max intensity 3.1); M2.5 on Oct 5, 2026 (1 reports); M2.8 on Oct 5, 2026 (3 reports, max intensity 2.2).
If you felt shaking, you can report it to USGS; reports refine the intensity map within minutes.
Tsunami warning status
None of the earthquakes near Simi Valley in the past year carried the USGS tsunami flag, which USGS sets for large quakes in oceanic regions where the tsunami warning centres issue messages.
Official tsunami warnings come from the NOAA tsunami warning centres (tsunami.gov) and national agencies; follow local authorities if you are on a coast after strong shaking.
Earthquakes around the world today
Worldwide, USGS listed 145 earthquakes of M1+ in the last 24 hours; the largest was M6.5 Bonin Islands, Japan region.
USGS lists every magnitude in the United States but outside it coverage is complete only from about M4–4.5, so smaller local quakes reported by national agencies may be missing. Magnitudes and locations are revised for hours after an event.
Earthquakes near other cities in United States and nearby
Earthquake pages
More live data for Simi Valley
Data: USGS Earthquake Hazards Program (ComCat), GeoNames (cities, CC BY 4.0).