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Minor earthquake, 2.8 mag strikes near Petrolia in CA


Earthquake location 40.396499633789S, -124.80066680908WA minor earthquake magnitude 2.8 (ml/mb) has struck on Saturday, 44 kilometers (27 miles) from Petrolia in CA. The temblor was detected at 22:27:00 / 10:27 pm (local time epicenter). Exact location of event, longitude -124.80066680908 West, latitude 40.396499633789 North, depth = 9.9499998092651 km. Event id: nc75112931. Ids that are associated to the earthquake: nc75112931. The epicenter of the earthquake was roughly 9.9499998092651 km (6 miles) below the earth’s surface. Date and time of earthquake in UTC/GMT: 04/01/25 / 2025-01-04 22:27:00 / January 4, 2025 @ 10:27 pm.

Earthquake epicenter was 70 km (44 miles) from Eureka (c. 27 200 pop), 59 km (37 miles) from Fortuna (c. 11 900 pop). Nearest cities/city/towns to hypocenter/epicentrum was Eureka, Fortuna (min 5000 pop). Nearby country/countries, United States (c. 310 233 000 pop) (That might be effected).

Earthquakes 2.5 to 2.9 are often felt, but only causes minor damage. There are an estimated 1,300,000 minor quakes in the world each year. In the past 24 hours, there have been 0, in the last 10 days ten, in the past 30 days one hundred and thirty-four and in the last 365 days two hundred and eighteen earthquakes of magnitude 3.0 or greater that was reported nearby.

Questions or comments?

Were you asleep? Was it difficult to stand and/or walk? Leave a comment or report about shaking, activity and damage at your city, home and country. This data comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, that has occurred near: 44 km WNW of Petrolia, CA.

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More information

Parameter Value Description
Magnitude 2.8 mb The magnitude for the event.
Longitude -124.80066680908° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 40.396499633789° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 9.9499998092651 km Depth of the event in kilometers.
Place 44 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 2025-01-04 22:27:00 Time when the event occurred. UTC/GMT
Updated 2025-01-04 22:32:17 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 8 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.3622 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.07 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 294 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 nc75112931 Id of event.
Event Code 75112931 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,nc75112931, A comma-separated list of event ids that are associated to an event.

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