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Minor earthquake, 2.81 mag strikes near Petrolia in CA


Earthquake location 40.40950012207S, -124.69183349609WA minor earthquake with magnitude 2.81 (ml/mb) was reported 36 kilometers (22 miles) from Petrolia in CA on Monday. All ids that are associated to the event: nc75099946. Unique identifier: nc75099946. The earthquake was roughly at a depth of -0.18999999761581 km (-0 miles). Global date and time of event UTC/GMT: 09/12/24 / 2024-12-09 07:36:10 / December 9, 2024 @ 7:36 am. Exact location of earthquake, -124.69183349609° West, 40.40950012207° North, depth -0.18999999761581 km. The 2.81-magnitude earthquake was detected at 07:36:10 / 7:36 am (local time epicenter).

Nearby country/countries, United States (c. 310 233 000 pop) (That might be effected). The epicenter was 62 km (39 miles) from Eureka (c. 27 200 pop), 72 km (45 miles) from Arcata (c. 17 200 pop), 72 km (44 miles) from Bayside (c. 17 100 pop), 50 km (31 miles) from Fortuna (c. 11 900 pop). Nearest cities/city/villages to epicentrum/hypocenter was Arcata, Bayside, Eureka (min 5000 pop).

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

Did you feel anything?

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. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 36 km WNW of Petrolia, CA. This data 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 -124.69183349609° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 40.40950012207° North Decimal degrees latitude. Negative values for southern latitudes.
Depth -0.18999999761581 km Depth of the event in kilometers.
Place 36 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 2024-12-09 07:36:10 Time when the event occurred. UTC/GMT
Updated 2024-12-09 07:37:42 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 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 16 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.2784 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.33 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 268 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 nc75099946 Id of event.
Event Code 75099946 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,nc75099946, A comma-separated list of event ids that are associated to an event.

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