Minor earthquake, 3.56 mag has occurred near Petrolia in CA

A minor earthquake magnitude 3.56 (ml/mb) has struck on Saturday, 37 kilometers (23 miles) from Petrolia in CA. Exact location of earthquake, longitude -124.7251663208 West, latitude 40.357833862305 North, depth = 18.860000610352 km. Global date and time of event UTC/GMT: 01/03/25 / 2025-03-01 22:45:19 / March 1, 2025 @ 10:45 pm. The temblor was reported at 22:45:19 / 10:45 pm (local time epicenter). All ids that are associated to the event: ew1740869120, nc75141231. Unique identifier: nc75141231. The earthquake was roughly at a depth of 18.860000610352 km (12 miles).

Country/countries that might be effected, United States (c. 310 233 000 pop). Nearest cities/city/towns to hypocenter/epicentrum was McKinleyville, Arcata, Bayside (min 5000 pop). Earthquake epicenter was 68 km (43 miles) from Eureka (c. 27 200 pop), 78 km (49 miles) from Arcata (c. 17 200 pop), 78 km (48 miles) from Bayside (c. 17 100 pop), 84 km (52 miles) from McKinleyville (c. 15 200 pop), 55 km (34 miles) from Fortuna (c. 11 900 pop).

Every year there are an estimated 130,000 minor earthquakes in the world. In the past 24 hours, there have been one, in the last 10 days four, in the past 30 days nineteen and in the last 365 days two hundred and fourty-five 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.

Questions or comments?

Were you asleep? Was it difficult to stand and/or walk? Leave a comment or report about shaking, activity and damage at your city, home and country. 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: 37 km WNW of Petrolia, CA.

More information

Parameter	Value	Description
Magnitude	3.56 mb	The magnitude for the event.
Longitude	-124.7251663208° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	40.357833862305° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	18.860000610352 km	Depth of the event in kilometers.
Place	37 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	2025-03-01 22:45:19	Time when the event occurred. UTC/GMT
Updated	2025-03-01 22:53:29	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	2	The maximum reported intensity for the event.
MMI	2.171	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	reviewed	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	195	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	78	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	0.3006	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.17 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	233	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	nc75141231	Id of event.
Event Code	75141231	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,ew1740869120,nc75141231,	A comma-separated list of event ids that are associated to an event.

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Minor earthquake, 3.56 mag has occurred near Petrolia in CA

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