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Minor earthquake, 2.81 mag has occurred near Petrolia in CA

Posted by admin on April 25, 2025 0 Comments

Earthquake location 40.36249923706S, -124.87433624268WA minor earthquake with magnitude 2.81 (ml/mb) was reported 50 kilometers (31 miles) from Petrolia in CA on Friday. The epicenter was at a depth of 12.5 km (8 miles). Unique identifier: nc75171096. Ids that are associated to the event: nc75171096. Exact location of earthquake, -124.87433624268° West, 40.36249923706° North, depth 12.5 km. Global time and date of event 25/04/25 / 2025-04-25 04:35:55 / April 25, 2025 @ 4:35 am UTC/GMT. The temblor was reported at 04:35:55 / 4:35 am (local time epicenter).

The epicenter was 66 km (41 miles) from Fortuna (c. 11 900 pop). Close country/countries that might be effected, United States (c. 310 233 000 pop). Closest city/cities/towns to epicentrum/hypocenter was Fortuna (min 5000 pop).

Earthquakes 2.5 to 2.9 are often felt, but only causes minor damage. Each year there are an estimated 1,300,000 minor quakes in the world. In the past 24 hours, there have been 0, in the last 10 days seven, in the past 30 days eleven and in the last 365 days two hundred and seventy-one earthquakes of magnitude 3.0 or greater that have been detected nearby.

How would you describe the shaking?

How did you react? Was there any damage to buildings? Leave a comment or report about shaking, activity and damage at your home, city and country. 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: 50 km WNW of Petrolia, CA.

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More information

Parameter Value Description
Magnitude 2.81 mb The magnitude for the event.
Longitude -124.87433624268° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 40.36249923706° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 12.5 km Depth of the event in kilometers.
Place 50 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 2025-04-25 04:35:55 Time when the event occurred. UTC/GMT
Updated 2025-04-25 04:37:41 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 121 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 40 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.4132 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.14 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 264 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 nc75171096 Id of event.
Event Code 75171096 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,nc75171096, A comma-separated list of event ids that are associated to an event.

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