Light earthquake: M4.8 quake has struck near Susanville in California

A light earthquake magnitude 4.8 (ml/mb) strikes 14 kilometers (9 miles) from Susanville in California on Monday. Exact location of earthquake, -120.6935° West, 40.5414° North, depth 9 km. Exact time and date of earthquake 29/12/25 / 2025-12-29 00:41:14 / December 29, 2025 @ 12:41 am UTC/GMT. The epicenter was at a depth of 9 km (6 miles). The temblor was detected at 00:41:14 / 12:41 am (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Id of earthquake: ew1766968880. Event ids that are associated: ew1766968880.

Nearest cities/city/towns to hypocenter/epicentrum was Susanville (min 5000 pop). Epicenter of the earthquake was 14 km (9 miles) from Susanville (c. 17 900 pop). Country/countries that might be effected, United States (c. 310 233 000 pop).

There are an estimated 13,000 light earthquakes in the world each year. Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. In the past 24 hours, there have been one, in the last 10 days three, in the past 30 days three and in the last 365 days seven earthquakes of magnitude 3.0 or greater that have been detected in the same area.

Did you feel the quake?

Did objects rattle, topple over, or fall off shelves? Leave a comment or report about activity, shaking and damage at your home, country and city. 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: 14 km NNW of Susanville, California.

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Parameter	Value	Description
Magnitude	4.8 mb	The magnitude for the event.
Longitude	-120.6935° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	40.5414° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	9 km	Depth of the event in kilometers.
Place	14 km NNW of Susanville, California	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2025-12-29 00:41:14	Time when the event occurred. UTC/GMT
Updated	2025-12-29 00:41:27	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	354	A number describing how significant the event is. Larger numbers indicate a more significant event.
Network	ew	The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources	,ew,	A comma-separated list of network contributors.
Number of Stations Used	15	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance		Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap		The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type	mw	The method or algorithm used to calculate the preferred magnitude for the event.
Event Type	earthquake	Type of seismic event.
Event ID	ew1766968880	Id of event.
Event Code	1766968880	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,ew1766968880,	A comma-separated list of event ids that are associated to an event.

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Light earthquake: M4.8 quake has struck near Susanville in California

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