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Minor earthquake, 2.84 mag has occurred near Twain in CA

Earthquake location 40.0215S, -121.0598333WA minor earthquake with magnitude 2.84 (ml/mb) was reported 1 kilometers (1 miles) from Twain in CA on Monday. The temblor was detected at 00:11:58 / 12:11 am (local time epicenter). Exact location of event, depth 8.43 km, -121.0598333° West, 40.0215° North. Global time and date of event 07/10/19 / 2019-10-07 08:11:58 / October 7, 2019 @ 8:11 am UTC/GMT. The epicenter was at a depth of 8.43 km (5 miles). Unique identifier: nc73287915. Ids that are associated to the event: nn00706566, nc73287915.

Nearest cities/city/villages to epicentrum/hypocenter was Palermo, Durham, Chico (min 5000 pop). Nearby country/countries that might be effected, United States (c. 310 233 000 pop). Earthquake epicenter was 74 km (46 miles) from Chico (c. 86 200 pop), 56 km (35 miles) from Paradise (c. 26 200 pop), 56 km (35 miles) from Susanville (c. 17 900 pop), 71 km (44 miles) from Oroville (c. 15 500 pop), 50 km (31 miles) from Magalia (c. 11 300 pop).

Every year there are an estimated 1,300,000 minor earthquakes in the world. Earthquakes 2.5 to 2.9 are often felt, but only causes minor damage. In the past 24 hours, there have been 0, in the last 10 days 0, in the past 30 days 0 and in the last 365 days five earthquakes of magnitude 3.0 or greater that have been detected in the same area.

Questions or comments?

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. The information in this article comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, detected near: 1 km WNW of Twain, CA.

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More information

Parameter Value Description
Magnitude 2.84 mb The magnitude for the event.
Longitude -121.0598333° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 40.0215° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 8.43 km Depth of the event in kilometers.
Place 1km WNW of Twain, CA Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2019-10-07 08:11:58 Time when the event occurred. UTC/GMT
Updated 2019-10-19 00:20:57 Time when the event was most recently updated. UTC/GMT
Timezone offset -480 Timezone offset from UTC in minutes at the event epicenter.
Felt 2 The total number of felt reports
CDI 2.2 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 reviewed 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 125 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 ,nn,nc, A comma-separated list of network contributors.
Number of Stations Used 22 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.1361 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 87 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 nc73287915 Id of event.
Event Code 73287915 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,nn00706566,nc73287915, A comma-separated list of event ids that are associated to an event.

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