Live earthquake check
Earthquakes near Union City today
Updated
No M2.5+ earthquake within 100 km of Union City in the last 24 hours 2 smaller quakes (largest M1.7) were recorded within 100 km; the latest 15 hours ago.
Was there an earthquake in Union City just now? This page checks the live USGS catalogue for quakes around Union City, California, United States and updates every few minutes.
- Last 24 hours
- 0 M2.5+ within 100 km
- Last 7 days
- 1 M2.5+ within 100 km
- Last 30 days
- 5 M2.5+ within 100 km
- Largest in 30 days
- M3.3 54 km ESE, Sep 27, 2026
- Largest in past year
- M4.6 54 km S, Apr 2, 2026
- Past year count
- 241 M2.5+ within 150 km
- Nearest in 30 days
- 54 km M2.6, Sep 27, 2026
Recent earthquakes near Union City
USGS recorded 5 earthquakes of magnitude 2.5 or more within 100 km of Union City in the past 30 days, 1 of them in the last 7 days. The most recent was M3.1 84 km SE of the city at Oct 21, 21:18 local time (4 days ago).
The average depth was about 4 km and 5 of 5 were shallow (under 70 km), which are the ones most likely to be felt at the surface. The busiest day was Sep 27, 2026 with 2 quakes.
USGS also lists 2 smaller quakes (below M2.5) within 100 km in the last 24 hours; these are rarely felt.
| Time (Union City) | UTC | Magnitude | Distance | Depth | Location |
|---|---|---|---|---|---|
| Oct 22, 14:58 | Oct 22, 21:58 UTC | M3.0 | 122 km SSE | 6 km | 15 km S of Tres Pinos, CA |
| Oct 21, 21:18 | Oct 22, 04:18 UTC | M3.1 | 84 km SE | -1 km | 23 km WSW of Gustine, CA |
| Oct 20, 09:23 | Oct 20, 16:23 UTC | M2.5 | 148 km NNW | 0 km | 2 km NW of The Geysers, CA |
| Oct 15, 10:57 | Oct 15, 17:57 UTC | M2.5 | 84 km SE | 5 km | 10 km ESE of Gilroy, CA |
| Sep 30, 13:48 | Sep 30, 20:48 UTC | M2.5 | 143 km NNW | 2 km | 1 km SSW of Anderson Springs, CA |
| Sep 29, 09:06 | Sep 29, 16:06 UTC | M2.5 | 96 km NNW | 8 km | 5 km W of Yountville, CA |
| Sep 27, 07:40 | Sep 27, 14:40 UTC | M2.6 | 54 km ESE | 4 km | 26 km WSW of Westley, CA |
| Sep 27, 07:21 | Sep 27, 14:21 UTC | M3.3 | 54 km ESE | 3 km | 27 km WSW of Westley, CA |
M2.5+ within 150 km, past 30 days, newest first. Times in America/Los_Angeles.
Largest earthquakes near Union City in the past year
The strongest earthquake within 150 km of Union City in the past 12 months was M4.6 on Apr 2, 2026, 54 km S of the city (1 km SE of Boulder Creek, CA).
With 241 M2.5+ earthquakes in a year (about 20.1 a month), the area around Union City 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 | 54 km S | 10 km | 1 km SE of Boulder Creek, CA |
| May 7, 2026 | M4.4 | 149 km NNW | 4 km | 2 km NW of The Geysers, CA |
| Feb 2, 2026 | M4.2 | 19 km NNE | 10 km | 4 km SE of San Ramon, CA |
| Nov 27, 2025 | M4.0 | 98 km SSE | 8 km | 5 km S of San Juan Bautista, CA |
| Dec 14, 2025 | M4.0 | 100 km NNW | 3 km | 6 km W of Glen Ellen, CA |
| Nov 26, 2025 | M4.0 | 82 km SE | 3 km | 8 km E of Gilroy, CA |
| Dec 20, 2025 | M4.0 | 17 km NNE | 10 km | 5 km SSE of San Ramon, CA |
| Aug 11, 2026 | M3.9 | 135 km SSE | 5 km | 6 km NW of Pinnacles, CA |
| Nov 24, 2025 | M3.9 | 147 km NNW | 2 km | 1 km NNW of The Geysers, CA |
| Dec 21, 2025 | M3.9 | 18 km NNE | 10 km | 5 km SE of San Ramon, CA |
Was it felt in Union City?
The largest nearby quake this month, M3.3 at 54 km, was probably too small or too distant to notice in Union City 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 6 of these quakes: M3.1 on Oct 22, 2026 (9 reports, max intensity 2.1); M2.5 on Oct 20, 2026 (1 reports, max intensity 2); M2.5 on Oct 15, 2026 (3 reports, max intensity 2); M2.5 on Sep 30, 2026 (6 reports, max intensity 3.6).
If you felt shaking, you can report it to USGS; reports refine the intensity map within minutes.
Tsunami warning status
4 earthquakes near Union City 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 146 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 Union City
Data: USGS Earthquake Hazards Program (ComCat), GeoNames (cities, CC BY 4.0).