Minor earthquake, 2.94 mag has occurred near Union City in CA

A minor earthquake magnitude 2.94 (ml/mb) has struck on Thursday, 1 kilometers (1 miles) from Union City in CA. All ids that are associated to the event: nc75178506. Unique identifier: nc75178506. The epicenter of the earthquake was roughly 9.7600002288818 km (6 miles) below the earth’s surface. Exact time and date of event in UTC/GMT: 08/05/25 / 2025-05-08 15:17:18 / May 8, 2025 @ 3:17 pm. The temblor was picked up at 15:17:18 / 3:17 pm (local time epicenter). Exact location of event, longitude -122.00316619873 West, latitude 37.59700012207 North, depth = 9.7600002288818 km.

Closest city/cities/towns to epicentrum/hypocenter was Patterson, August, Gilroy (min 5000 pop). Epicenter of the earthquake was 30 km (19 miles) from San Jose (c. 945 900 pop), 42 km (26 miles) from San Francisco (c. 805 200 pop), 33 km (20 miles) from Oakland (c. 390 700 pop), 74 km (46 miles) from Stockton (c. 291 700 pop), 6 km (3 miles) from Fremont (c. 214 100 pop). Nearby country/countries, United States (c. 310 233 000 pop) (That might be effected).

In the past 24 hours, there have been one, in the last 10 days one, in the past 30 days two and in the last 365 days thirty-one earthquakes of magnitude 3.0 or greater that has occurred nearby. Earthquakes 3.0 to 4.0 are often felt, but only causes minor damage. Every year there are an estimated 130,000 minor earthquakes in the world.

Did you feel anything?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city and country. The information in this article comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, detected near: 1 km E of Union City, CA.

August CA Fremont Gilroy Oakland Patterson San Francisco San Jose Stockton Union City United States

More information

Parameter	Value	Description
Magnitude	2.94 mb	The magnitude for the event.
Longitude	-122.00316619873° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	37.59700012207° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	9.7600002288818 km	Depth of the event in kilometers.
Place	1 km E of Union City, CA	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2025-05-08 15:17:18	Time when the event occurred. UTC/GMT
Updated	2025-05-08 15:21:28	Time when the event was most recently updated. UTC/GMT
Timezone offset		Timezone offset from UTC in minutes at the event epicenter.
Felt		The total number of felt reports
CDI		The maximum reported intensity for the event.
MMI		The maximum estimated instrumental intensity for the event.
Alert Level		The alert level from the PAGER earthquake impact scale. Green, Yellow, Orange or Red.
Review Status	automatic	Indicates whether the event has been reviewed by a human.
Tsunami	0	This flag is set to "1" for large events in oceanic regions and "0" otherwise. The existence or value of this flag does not indicate if a tsunami actually did or will exist.
SIG	133	A number describing how significant the event is. Larger numbers indicate a more significant event.
Network	nc	The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources	,nc,	A comma-separated list of network contributors.
Number of Stations Used	86	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	0.03255	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.15 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	39	The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type	ml	The method or algorithm used to calculate the preferred magnitude for the event.
Event Type	earthquake	Type of seismic event.
Event ID	nc75178506	Id of event.
Event Code	75178506	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,nc75178506,	A comma-separated list of event ids that are associated to an event.

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Minor earthquake, 2.94 mag has occurred near Union City in CA

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