Minor earthquake, 2.89 mag was detected near San Ramon in CA

A minor earthquake with magnitude 2.89 (ml/mb) was reported 4 kilometers (2 miles) from San Ramon in CA on Monday. Exact location of event, depth 9.039999961853 km, -121.94149780273° West, 37.76233291626° North. Event ids that are associated to the earthquake: nc75276891. Id of event: nc75276891. Date and time of earthquake in UTC/GMT: 08/12/25 / 2025-12-08 21:50:43 / December 8, 2025 @ 9:50 pm. The temblor was picked up at 21:50:43 / 9:50 pm (local time epicenter). The earthquake occurred at a depth of 9.039999961853 km (6 miles).

Closest city/cities or villages, with min 5000 pop, to hypocenter/epicentrum was Dixon, Ben Lomond, Salida. Nearby country/countries, United States (c. 310 233 000 pop) (That might be effected). The epicenter was 47 km (29 miles) from San Jose (c. 945 900 pop), 42 km (26 miles) from San Francisco (c. 805 200 pop), 29 km (18 miles) from Oakland (c. 390 700 pop), 61 km (38 miles) from Stockton (c. 291 700 pop), 24 km (15 miles) from Fremont (c. 214 100 pop).

There are an estimated 1,300,000 minor earthquakes in the world each year. Earthquakes 2.5 to 2.9 are often felt, but only causes minor damage. In the past 24 hours, there have been three, in the last 10 days six, in the past 30 days twenty-one and in the last 365 days fifty-two earthquakes of magnitude 3.0 or greater that was reported nearby.

Did you feel it?

How did you react? Was there any damage to buildings? Leave a comment or report about shaking, activity and damage at your home, city and country. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 4 km ESE of San Ramon, CA. This information comes from the USGS Earthquake Notification Service.

Ben Lomond CA Dixon Fremont Oakland Salida San Francisco San Jose San Ramon Stockton United States

More information

Parameter	Value	Description
Magnitude	2.89 mb	The magnitude for the event.
Longitude	-121.94149780273° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	37.76233291626° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	9.039999961853 km	Depth of the event in kilometers.
Place	4 km ESE of San Ramon, CA	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2025-12-08 21:50:43	Time when the event occurred. UTC/GMT
Updated	2025-12-08 21:53:30	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	128	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	73	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	0.1008	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.11 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	26	The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type	md	The method or algorithm used to calculate the preferred magnitude for the event.
Event Type	earthquake	Type of seismic event.
Event ID	nc75276891	Id of event.
Event Code	75276891	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,nc75276891,	A comma-separated list of event ids that are associated to an event.

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Minor earthquake, 2.89 mag was detected near San Ramon in CA

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