Live earthquake check
Earthquakes near Castro Valley today
Updated
No M2.5+ earthquake within 100 km of Castro Valley in the last 24 hours The last M2.5+ within 100 km was M2.5 32 km N, 4 days ago.
Recent earthquakes near Castro Valley
USGS recorded 8 earthquakes of magnitude 2.5 or more within 100 km of Castro Valley in the past 30 days, 4 of them in the last 7 days. The most recent was M2.5 32 km N of the city at Nov 2, 01:23 local time (4 days ago).
The average depth was about 7 km and 8 of 8 were shallow (under 70 km), which are the ones most likely to be felt at the surface. The busiest day was Nov 2, 2026 with 3 quakes.
| Time (Castro Valley) | UTC | Magnitude | Distance | Depth | Location |
|---|---|---|---|---|---|
| Nov 2, 13:02 | Nov 2, 21:02 UTC | M2.8 | 140 km NNW | 7 km | 8 km E of Lower Lake, CA |
| Nov 2, 12:34 | Nov 2, 20:34 UTC | M2.5 | 142 km NNW | 1 km | 8 km E of Lower Lake, CA |
| Nov 2, 07:14 | Nov 2, 15:14 UTC | M2.7 | 140 km NNW | 3 km | 7 km NW of The Geysers, CA |
| Nov 2, 01:23 | Nov 2, 09:23 UTC | M2.5 | 32 km N | 15 km | 2 km WNW of Concord, CA |
| Nov 1, 19:27 | Nov 2, 03:27 UTC | M2.5 | 95 km SE | 6 km | 9 km E of Gilroy, CA |
| Nov 1, 18:23 | Nov 2, 02:23 UTC | M2.6 | 24 km NW | 10 km | 3 km ESE of Berkeley, CA |
| Oct 31, 09:44 | Oct 31, 16:44 UTC | M2.9 | 63 km ESE | 2 km | 27 km WSW of Westley, CA |
| Oct 29, 05:38 | Oct 29, 12:38 UTC | M2.7 | 119 km SSE | 9 km | 12 km SW of Ridgemark, CA |
| Oct 28, 17:17 | Oct 29, 00:17 UTC | M2.7 | 34 km WSW | 7 km | 2 km NE of Pacifica, CA |
| Oct 28, 16:29 | Oct 28, 23:29 UTC | M2.6 | 119 km SSE | 9 km | 12 km SW of Ridgemark, CA |
| Oct 27, 12:38 | Oct 27, 19:38 UTC | M2.6 | 56 km SE | 7 km | 14 km E of Seven Trees, CA |
| Oct 26, 06:10 | Oct 26, 13:10 UTC | M2.5 | 102 km SSE | 5 km | 4 km SE of Aromas, CA |
| Oct 22, 14:58 | Oct 22, 21:58 UTC | M3.0 | 135 km SSE | 4 km | 15 km S of Tres Pinos, CA |
| Oct 21, 21:18 | Oct 22, 04:18 UTC | M3.0 | 96 km SE | 1 km | 20 km WSW of Gustine, CA |
| Oct 15, 10:57 | Oct 15, 17:57 UTC | M2.5 | 96 km SE | 6 km | 10 km E of Gilroy, CA |
| Oct 14, 23:06 | Oct 15, 06:06 UTC | M2.8 | 140 km NNW | 2 km | 7 km NW of The Geysers, CA |
M2.5+ within 150 km, past 30 days, newest first. Times in America/Los_Angeles.
Was there an earthquake in Castro Valley just now? This page checks the live USGS catalogue for quakes around Castro Valley, California, United States and updates every few minutes.
- Last 24 hours
- 0 M2.5+ within 100 km
- Last 7 days
- 4 M2.5+ within 100 km
- Last 30 days
- 8 M2.5+ within 100 km
- Largest in 30 days
- M3.0 96 km SE, Oct 22, 2026
- Largest in past year
- M4.6 64 km S, Apr 2, 2026
- Past year count
- 282 M2.5+ within 150 km
- Nearest in 30 days
- 24 km M2.6, Nov 2, 2026
Largest earthquakes near Castro Valley in the past year
The strongest earthquake within 150 km of Castro Valley in the past 12 months was M4.6 on Apr 2, 2026, 64 km S of the city (1 km SE of Boulder Creek, CA).
With 282 M2.5+ earthquakes in a year (about 23.5 a month), the area around Castro Valley is very active by global standards. 1 of the ten largest reached M4.5, the level at which damage near the epicentre becomes possible.
| Date | Magnitude | Distance | Depth | Location |
|---|---|---|---|---|
| Apr 2, 2026 | M4.6 | 64 km S | 10 km | 1 km SE of Boulder Creek, CA |
| May 7, 2026 | M4.4 | 136 km NNW | 4 km | 2 km NW of The Geysers, CA |
| Jul 29, 2026 | M4.2 | 141 km NNW | 6 km | 8 km ESE of Cloverdale, CA |
| Feb 2, 2026 | M4.2 | 14 km ENE | 10 km | 4 km SE of San Ramon, CA |
| Jan 8, 2026 | M4.2 | 144 km NNW | 3 km | 12 km ENE of Cloverdale, CA |
| Feb 21, 2026 | M4.2 | 139 km NNW | 2 km | 5 km W of Cobb, CA |
| Nov 27, 2025 | M4.0 | 111 km SSE | 8 km | 5 km S of San Juan Bautista, CA |
| Dec 14, 2025 | M4.0 | 88 km NNW | 3 km | 6 km W of Glen Ellen, CA |
| Nov 26, 2025 | M4.0 | 94 km SE | 3 km | 8 km E of Gilroy, CA |
| Dec 20, 2025 | M4.0 | 13 km ENE | 10 km | 5 km SSE of San Ramon, CA |
Was it felt in Castro Valley?
The largest nearby quake this month, M3.0 at 96 km, was probably too small or too distant to notice in Castro 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 11 of these quakes: M2.7 on Nov 2, 2026 (3 reports, max intensity 3.1); M2.5 on Nov 2, 2026 (39 reports, max intensity 3.1); M2.5 on Nov 2, 2026 (2 reports, max intensity 3.1); M2.6 on Nov 2, 2026 (113 reports, max intensity 3.4).
If you felt shaking, you can report it to USGS; reports refine the intensity map within minutes.
Tsunami warning status
4 earthquakes near Castro Valley in the past year carried the USGS tsunami flag: M4.2 4 km SE of San Ramon, CA (Feb 2, 2026); M4.0 5 km S of San Juan Bautista, CA (Nov 27, 2025); M4.0 6 km W of Glen Ellen, CA (Dec 14, 2025); M4.0 8 km E of Gilroy, CA (Nov 26, 2025). The flag means the quake was large enough and in an oceanic region where tsunami warning centres issue messages; it does not mean a tsunami happened.
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 171 earthquakes of M1+ in the last 24 hours; the largest was M6.1 Fiji 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 Castro Valley
Data: USGS Earthquake Hazards Program (ComCat), GeoNames (cities, CC BY 4.0).