Minor earthquake: M3.81 quake has struck near Petrolia in CA

A minor earthquake magnitude 3.81 (ml/mb) has struck on Wednesday, 62 kilometers (39 miles) from Petrolia in CA. All ids that are associated to the event: ew1744815910, nc75166296. Unique identifier: nc75166296. Exact location of event, longitude -125.00883483887 West, latitude 40.368999481201 North, depth = 2.9900000095367 km. The temblor was picked up at 15:04:56 / 3:04 pm (local time epicenter). Exact time and date of event in UTC/GMT: 16/04/25 / 2025-04-16 15:04:56 / April 16, 2025 @ 3:04 pm. The epicenter of the earthquake was roughly 2.9900000095367 km (2 miles) below the earth’s surface.

Epicenter of the earthquake was 86 km (53 miles) from Eureka (c. 27 200 pop), 76 km (47 miles) from Fortuna (c. 11 900 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 Eureka, Fortuna.

Earthquakes 3.0 to 4.0 are often felt, but only causes minor damage. Each year there are an estimated 130,000 minor earthquakes in the world. In the past 24 hours, there have been two, in the last 10 days two, in the past 30 days eight and in the last 365 days two hundred and seventy earthquakes of magnitude 3.0 or greater that have been detected nearby.

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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. 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: 62 km WNW of Petrolia, CA.

CA Eureka Fortuna Petrolia United States

More information

Parameter	Value	Description
Magnitude	3.81 mb	The magnitude for the event.
Longitude	-125.00883483887° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	40.368999481201° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	2.9900000095367 km	Depth of the event in kilometers.
Place	62 km WNW 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	2025-04-16 15:04:56	Time when the event occurred. UTC/GMT
Updated	2025-04-16 15:10:50	Time when the event was most recently updated. UTC/GMT
Timezone offset		Timezone offset from UTC in minutes at the event epicenter.
Felt	1	The total number of felt reports
CDI	2.7	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	224	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	,ew,nc,	A comma-separated list of network contributors.
Number of Stations Used	103	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	0.5156	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.19 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	247	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	nc75166296	Id of event.
Event Code	75166296	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,ew1744815910,nc75166296,	A comma-separated list of event ids that are associated to an event.

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Minor earthquake: M3.81 quake has struck near Petrolia in CA

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