Minor earthquake, 2.99 mag has occurred near Petrolia in CA

A minor earthquake magnitude 2.99 (ml/mb) has struck on Sunday, 33 kilometers (21 miles) from Petrolia in CA. Date and time of earthquake in UTC/GMT: 20/04/25 / 2025-04-20 21:55:48 / April 20, 2025 @ 9:55 pm. Exact location of earthquake, longitude -124.67849731445 West, latitude 40.34400177002 North, depth = 18.969999313354 km. Unique identifier: nc75168971. Ids that are associated to the event: nc75168971. The epicenter was at a depth of 18.969999313354 km (12 miles). The 2.99-magnitude earthquake has occurred at 21:55:48 / 9:55 pm (local time epicenter).

Close country/countries that might be effected, United States (c. 310 233 000 pop). Nearest cities/city/towns to hypocenter/epicentrum was Arcata, Bayside, Eureka (min 5000 pop). The epicenter was 67 km (42 miles) from Eureka (c. 27 200 pop), 77 km (48 miles) from Arcata (c. 17 200 pop), 76 km (47 miles) from Bayside (c. 17 100 pop), 52 km (33 miles) from Fortuna (c. 11 900 pop).

In the past 24 hours, there have been one, in the last 10 days five, in the past 30 days nine and in the last 365 days two hundred and sixty earthquakes of magnitude 3.0 or greater that have been detected in the same area. 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.

Did you feel the quake?

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: 33 km WNW of Petrolia, CA.

More information

Parameter	Value	Description
Magnitude	2.99 mb	The magnitude for the event.
Longitude	-124.67849731445° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	40.34400177002° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	18.969999313354 km	Depth of the event in kilometers.
Place	33 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	2025-04-20 21:55:48	Time when the event occurred. UTC/GMT
Updated	2025-04-20 21:57:18	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	138	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	45	The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance	0.2628	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	248	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	nc75168971	Id of event.
Event Code	75168971	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,nc75168971,	A comma-separated list of event ids that are associated to an event.

Earthquakes today

Current and latest world earthquakes breaking news, activity and articles today

Minor earthquake, 2.99 mag has occurred near Petrolia in CA

Did you feel the quake?

More information

Leave a ReplyCancel reply

Follow us!

Tsunami videos

Categories

Information