Minor earthquake, 2.91 mag was detected near Petrolia in CA

A minor earthquake with magnitude 2.91 (ml/mb) was reported 14 kilometers (9 miles) from Petrolia in CA on Monday. Event id: nc75186631. Ids that are associated to the earthquake: nc75186631. The earthquake occurred at a depth of -0.029999999329448 km (-0 miles). Date and time of earthquake in UTC/GMT: 26/05/25 / 2025-05-26 08:22:33 / May 26, 2025 @ 8:22 am. Exact location of event, depth -0.029999999329448 km, -124.38050079346° West, 40.221500396729° North. The temblor was reported at 08:22:33 / 8:22 am (local time epicenter).

Country/countries that might be effected, United States (c. 310 233 000 pop). Earthquake epicenter was 67 km (42 miles) from Eureka (c. 27 200 pop), 76 km (47 miles) from Arcata (c. 17 200 pop), 74 km (46 miles) from Bayside (c. 17 100 pop), 46 km (29 miles) from Fortuna (c. 11 900 pop). Nearest cities/city/villages to epicentrum/hypocenter was Arcata, Bayside, Eureka (min 5000 pop).

Earthquakes 3.0 to 4.0 are often felt, but only causes minor damage. Every year there are an estimated 130,000 minor earthquakes in the world. In the past 24 hours, there have been five, in the last 10 days nine, in the past 30 days twelve and in the last 365 days two hundred and sixty-one earthquakes of magnitude 3.0 or greater that have been detected in the same area.

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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. This information comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Date-Time, Location, Distances, Parameters and details about this quake, recorded: 14 km SW of Petrolia, CA.

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Parameter	Value	Description
Magnitude	2.91 mb	The magnitude for the event.
Longitude	-124.38050079346° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	40.221500396729° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	-0.029999999329448 km	Depth of the event in kilometers.
Place	14 km SW of Petrolia, CA	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2025-05-26 08:22:33	Time when the event occurred. UTC/GMT
Updated	2025-05-26 08:26:37	Time when the event was most recently updated. UTC/GMT
Timezone offset		Timezone offset from UTC in minutes at the event epicenter.
Felt	2	The total number of felt reports
CDI	3.3	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	131	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	12	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	0.1245	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.28 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	297	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	nc75186631	Id of event.
Event Code	75186631	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,nc75186631,	A comma-separated list of event ids that are associated to an event.

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Minor earthquake, 2.91 mag was detected near Petrolia in CA

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