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Minor earthquake, 2.85 mag strikes near Petrolia in CA


Earthquake location 40.322333333333S, -124.81216666667WA minor earthquake with magnitude 2.85 (ml/mb) was detected on Saturday, 45 kilometers (28 miles) from Petrolia in CA. Global date and time of event UTC/GMT: 29/03/25 / 2025-03-29 22:44:44 / March 29, 2025 @ 10:44 pm. Exact location of event, depth 14.92 km, -124.81216666667° West, 40.322333333333° North. The temblor was picked up at 22:44:44 / 10:44 pm (local time epicenter). The epicenter of the earthquake was roughly 14.92 km (9 miles) below the earth’s surface. Event id: nc75157442. Ids that are associated to the earthquake: nc75157442.

Country/countries that might be effected, United States (c. 310 233 000 pop). Earthquake epicenter was 76 km (48 miles) from Eureka (c. 27 200 pop), 63 km (39 miles) from Fortuna (c. 11 900 pop). Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Eureka, Fortuna.

Earthquakes 2.5 to 2.9 are often felt, but only causes minor damage. In the past 24 hours, there have been three, in the last 10 days five, in the past 30 days thirteen and in the last 365 days two hundred and sixty-five earthquakes of magnitude 3.0 or greater that has occurred nearby. There are an estimated 1,300,000 minor quakes in the world each year.

Did you feel it?

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: 45 km W of Petrolia, CA.

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More information

Parameter Value Description
Magnitude 2.85 mb The magnitude for the event.
Longitude -124.81216666667° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 40.322333333333° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 14.92 km Depth of the event in kilometers.
Place 45 km W 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 2025-03-29 22:44:44 Time when the event occurred. UTC/GMT
Updated 2025-04-07 23:51:42 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 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 125 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 91 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.3607 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.3 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 240 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 nc75157442 Id of event.
Event Code 75157442 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,nc75157442, A comma-separated list of event ids that are associated to an event.

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