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Earthquake breaking news, Minor World Earthquakes Magnitude -3.9

Minor earthquake 2.97 mag, 21 km W of Petrolia, CA

Earthquake location 40.2929993S, -124.5273361WA minor earthquake with magnitude 2.97 (ml/mb) was detected on Thursday, 21 kilometers (13 miles) from Petrolia in CA. Global date and time of event UTC/GMT: 04/03/21 / 2021-03-04 17:08:32 / March 4, 2021 @ 5:08 pm. The temblor was reported at 17:08:32 / 5:08 pm (local time epicenter). The earthquake occurred at a depth of 20.27 km (13 miles) below the earth’s surface. Event ids that are associated to the earthquake: nc73531231. Id of event: nc73531231. Exact location of earthquake, -124.5273361° West, 40.2929993° North, depth 20.27 km.

Epicenter of the event was 64 km (40 miles) from Eureka (c. 27 200 pop), 74 km (46 miles) from Arcata (c. 17 200 pop), 73 km (45 miles) from Bayside (c. 17 100 pop), 46 km (29 miles) from Fortuna (c. 11 900 pop). Nearest cities/city/towns to hypocenter/epicentrum was Arcata, Bayside, Eureka (min 5000 pop). Country/countries that might be effected, United States (c. 310 233 000 pop).

In the past 24 hours, there have been one, in the last 10 days two, in the past 30 days three and in the last 365 days fifty-two earthquakes of magnitude 3.0 or greater that have been detected nearby. 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.

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: 21 km W of Petrolia, CA. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 2.97 mb The magnitude for the event.
Longitude -124.5273361° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 40.2929993° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 20.27 km Depth of the event in kilometers.
Place 21km 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 2021-03-04 17:08:32 Time when the event occurred. UTC/GMT
Updated 2021-03-04 17:10:05 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 136 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 19 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.1414 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.09 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 259 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 nc73531231 Id of event.
Event Code 73531231 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,nc73531231, A comma-separated list of event ids that are associated to an event.

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