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Minor earthquake: M3.47 quake has struck near Big Bear City in CA

Posted by admin on October 5, 2025 0 Comments

A minor earthquake with magnitude 3.47 (ml/mb) was detected on Sunday, 7 kilometers (4 miles) from Big Bear City in CA. Global time and date of event 05/10/25 / 2025-10-05 10:41:24 / October 5, 2025 @ 10:41 am UTC/GMT. Unique identifier: ci41102895. Ids that are associated to the event: ci41102895. The epicenter of the earthquake was roughly 6.1 km (4 miles) below the earth’s surface. The 3.47-magnitude earthquake has occurred at 10:41:24 / 10:41 am (local time epicenter). Exact location of earthquake, longitude -116.8546677 West, latitude 34.3218346 North, depth = 6.1 km.

Epicenter of the event was 65 km (40 miles) from Riverside (c. 303 900 pop), 47 km (29 miles) from San Bernardino (c. 209 900 pop), 59 km (37 miles) from Fontana (c. 196 100 pop), 55 km (34 miles) from Moreno Valley (c. 193 400 pop), 72 km (45 miles) from Rancho Cucamonga (c. 165 300 pop). Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Claremont, Bermuda Dunes, Corona. Country/countries that might be effected, United States (c. 310 233 000 pop).

In the past 24 hours, there have been three, in the last 10 days three, in the past 30 days seven and in the last 365 days fourty-six 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. There are an estimated 130,000 minor earthquakes in the world each year.

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What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city and country. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 7 km N of Big Bear City, CA. This data comes from the USGS Earthquake Notification Service.

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Parameter	Value	Description
Magnitude	3.47 mb	The magnitude for the event.
Longitude	-116.8546677° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	34.3218346° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	6.1 km	Depth of the event in kilometers.
Place	7 km N of Big Bear 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	2025-10-05 10:41:24	Time when the event occurred. UTC/GMT
Updated	2025-10-05 10:47:28	Time when the event was most recently updated. UTC/GMT
Timezone offset		Timezone offset from UTC in minutes at the event epicenter.
Felt	7	The total number of felt reports
CDI	2.7	The maximum reported intensity for the event.
MMI	3.715	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	187	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	104	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	0.03449	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.16 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	18	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	ci41102895	Id of event.
Event Code	41102895	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,ci41102895,	A comma-separated list of event ids that are associated to an event.

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Minor earthquake: M3.47 quake has struck near Big Bear City in CA

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