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Minor earthquake, 2.81 mag strikes near Petrolia in CA


Earthquake location 40.261165618896S, -124.45233154297WA minor earthquake magnitude 2.81 (ml/mb) strikes 16 kilometers (10 miles) from Petrolia in CA on Monday. Id of earthquake: nc75127361. Event ids that are associated: nc75127361. The temblor was picked up at 05:47:14 / 5:47 am (local time epicenter). The earthquake occurred at a depth of 18.959999084473 km (12 miles) below the earth’s surface. Exact location of event, longitude -124.45233154297 West, latitude 40.261165618896 North, depth = 18.959999084473 km. Global time and date of event 03/02/25 / 2025-02-03 05:47:14 / February 3, 2025 @ 5:47 am UTC/GMT.

Closest city/cities or villages, with min 5000 pop, to hypocenter/epicentrum was Arcata, Bayside, Eureka. Nearby country/countries that might be effected, United States (c. 310 233 000 pop). Epicenter of the event was 65 km (40 miles) from Eureka (c. 27 200 pop), 74 km (46 miles) from Arcata (c. 17 200 pop), 72 km (45 miles) from Bayside (c. 17 100 pop), 45 km (28 miles) from Fortuna (c. 11 900 pop).

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

Questions or comments?

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. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 16 km WSW of Petrolia, CA. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 2.81 mb The magnitude for the event.
Longitude -124.45233154297° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 40.261165618896° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 18.959999084473 km Depth of the event in kilometers.
Place 16 km WSW 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 2025-02-03 05:47:14 Time when the event occurred. UTC/GMT
Updated 2025-02-03 05:48:41 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 12 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.08827 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.08 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 279 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 nc75127361 Id of event.
Event Code 75127361 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,nc75127361, A comma-separated list of event ids that are associated to an event.

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