Minor earthquake, 3.87 mag was detected near The Geysers in CA

A minor earthquake magnitude 3.87 (ml/mb) has occurred on Monday, 1 kilometers (1 miles) from The Geysers in CA. The 3.87-magnitude earthquake was detected at 15:08:58 / 3:08 pm (local time epicenter). Exact time and date of event in UTC/GMT: 24/11/25 / 2025-11-24 15:08:58 / November 24, 2025 @ 3:08 pm. Exact location, longitude -122.75949859619° West, latitude 38.78450012207° North, depth = 2.0499999523163 km. The epicenter was at a depth of 2.0499999523163 km (1 miles). Event id: nc75268551. Ids that are associated to the earthquake: nc75268551, ew1763996940.

The epicenter was 38 km (24 miles) from Santa Rosa (c. 167 800 pop), 87 km (54 miles) from Vallejo (c. 115 900 pop), 86 km (54 miles) from Fairfield (c. 105 300 pop), 82 km (51 miles) from Vacaville (c. 92 400 pop), 68 km (42 miles) from Napa (c. 76 900 pop), 62 km (39 miles) from Petaluma (c. 57 900 pop). Close country/countries, United States (c. 310 233 000 pop) (That might be effected). Closest city/cities or villages, with min 5000 pop, to hypocenter/epicentrum was Vallejo, Suisun, Fairfield.

There are an estimated 130,000 minor quakes in the world each year. In the past 24 hours, there have been one, in the last 10 days two, in the past 30 days five and in the last 365 days fourty earthquakes of magnitude 3.0 or greater that was reported nearby. Earthquakes 3.0 to 4.0 are often felt, but only causes minor damage.

Questions or comments?

Were you asleep? Was it difficult to stand and/or walk? Leave a comment or report about shaking, activity and damage at your city, home and country. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 1 km NNW of The Geysers, CA. This data comes from the USGS Earthquake Notification Service.

CA Fairfield Napa Petaluma Santa Rosa Suisun The Geysers United States Vacaville Vallejo

More information

Parameter	Value	Description
Magnitude	3.87 mb	The magnitude for the event.
Longitude	-122.75949859619° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	38.78450012207° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	2.0499999523163 km	Depth of the event in kilometers.
Place	1 km NNW of The Geysers, CA	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2025-11-24 15:08:58	Time when the event occurred. UTC/GMT
Updated	2025-11-24 15:15:01	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	4.556	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	230	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,ew,	A comma-separated list of network contributors.
Number of Stations Used	93	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	0.0146	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.12 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	30	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	nc75268551	Id of event.
Event Code	75268551	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,nc75268551,ew1763996940,	A comma-separated list of event ids that are associated to an event.

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Minor earthquake, 3.87 mag was detected near The Geysers in CA

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