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Earthquake breaking news, Minor World Earthquakes Magnitude -3.9

Minor earthquake, 2.97 mag was detected near Petrolia in CA


Earthquake location 40.4404984S, -124.4164963WA minor earthquake with magnitude 2.97 (ml/mb) was reported 17 kilometers (11 miles) from Petrolia in CA on Thursday. The 2.97-magnitude earthquake has occurred at 19:18:50 / 7:18 pm (local time epicenter). Event id: nc72988941. Ids that are associated to the earthquake: nc72988941. The earthquake occurred at a depth of 22.95 km (14 miles). Exact location of event, longitude -124.4164963 West, latitude 40.4404984 North, depth = 22.95 km. Exact time and date of event in UTC/GMT: 23/03/18 / 2018-03-23 03:18:50 / March 23, 2018 @ 3:18 am.

Nearby country/countries that might be effected, United States (c. 310 233 000 pop). Closest city/cities/towns to epicentrum/hypocenter was McKinleyville, Arcata, Bayside (min 5000 pop). The epicenter was 46 km (28 miles) from Eureka (c. 27 200 pop), 55 km (34 miles) from Arcata (c. 17 200 pop), 54 km (33 miles) from Bayside (c. 17 100 pop), 62 km (39 miles) from McKinleyville (c. 15 200 pop), 28 km (17 miles) from Fortuna (c. 11 900 pop).

In the past 24 hours, there have been three, in the last 10 days four, in the past 30 days six and in the last 365 days fourty-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. There are an estimated 130,000 minor quakes in the world each year.

Questions or comments?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city and country. This information comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Date-Time, Location, Distances, Parameters and details about this quake, recorded: 17 km NW of Petrolia, CA.

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More information

Parameter Value Description
Magnitude 2.97 mb The magnitude for the event.
Longitude -124.4164963° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 40.4404984° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 22.95 km Depth of the event in kilometers.
Place 17km NW 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 2018-03-23 03:18:50 Time when the event occurred. UTC/GMT
Updated 2018-03-23 03:20:42 Time when the event was most recently updated. UTC/GMT
Timezone offset -480 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 11 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.06973 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 262 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 nc72988941 Id of event.
Event Code 72988941 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,nc72988941, A comma-separated list of event ids that are associated to an event.

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