Minor earthquake: M2.8 quake has struck near Johannesburg in CA

A minor earthquake magnitude 2.8 (ml/mb) has struck on Sunday, 17 kilometers (11 miles) from Johannesburg in CA. Exact location of earthquake, -117.8081665° West, 35.3233337° North, depth 6.42 km. The 2.8-magnitude earthquake was detected at 06:32:46 / 6:32 am (local time epicenter). The earthquake occurred at a depth of 6.42 km (4 miles) below the earth’s surface. Exact time and date of event in UTC/GMT: 20/07/25 / 2025-07-20 06:32:46 / July 20, 2025 @ 6:32 am. Unique identifier: ci41026799. Ids that are associated to the event: ci41026799.

Nearby country/countries that might be effected, United States (c. 310 233 000 pop). The epicenter was 76 km (47 miles) from Lancaster (c. 156 600 pop), 36 km (22 miles) from Ridgecrest (c. 27 600 pop), 60 km (38 miles) from Rosamond (c. 18 200 pop), 62 km (39 miles) from Tehachapi (c. 14 400 pop), 27 km (17 miles) from California City (c. 14 100 pop). Nearest cities/city/towns to hypocenter/epicentrum was Bear Valley Springs, Lancaster, Golden Hills (min 5000 pop).

Earthquakes 2.5 to 2.9 are often felt, but only causes minor damage. In the past 24 hours, there have been 0, in the last 10 days two, in the past 30 days two and in the last 365 days twenty-five earthquakes of magnitude 3.0 or greater that have been detected in the same area. There are an estimated 1,300,000 minor quakes in the world each year.

How would you describe the shaking?

How did you respond? Did any furniture slide, topple over, or become displaced? Leave a comment or report about activity, shaking and damage at your home, city and country. This data comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, that has occurred near: 17 km WSW of Johannesburg, CA.

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Parameter	Value	Description
Magnitude	2.8 mb	The magnitude for the event.
Longitude	-117.8081665° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	35.3233337° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	6.42 km	Depth of the event in kilometers.
Place	17 km WSW of Johannesburg, CA	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2025-07-20 06:32:46	Time when the event occurred. UTC/GMT
Updated	2025-07-20 06:35:06	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	121	A number describing how significant the event is. Larger numbers indicate a more significant event.
Network	ci	The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources	,ci,	A comma-separated list of network contributors.
Number of Stations Used	92	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	0.06372	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.2 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	22	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	ci41026799	Id of event.
Event Code	41026799	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,ci41026799,	A comma-separated list of event ids that are associated to an event.

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Minor earthquake: M2.8 quake has struck near Johannesburg in CA

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