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Minor earthquake, 2.8 mag strikes near Tennant in CA


Earthquake location 41.3935013S, -121.6204987WA minor earthquake with magnitude 2.8 (ml/mb) was reported 32 km SE of Tennant, CA (20 miles) on Sunday. Exact location of event, depth 8.3 km, -121.6204987° West, 41.3935013° North. Date and time of earthquake in UTC/GMT: 29/04/18 / 2018-04-29 10:34:25 / April 29, 2018 @ 10:34 am. The temblor was picked up at 02:34:25 / 2:34 am (local time epicenter). The earthquake was roughly at a depth of 8.3 km (5 miles). All ids that are associated to the event: nc73008166. Unique identifier: nc73008166.

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 four earthquakes of magnitude 3.0 or greater that has struck near. Earthquakes 2.5 to 2.9 are often felt, but only causes minor damage. There are an estimated 1,300,000 minor earthquakes in the world each year.

Did you feel it?

What was your situation during the earthquake? Leave a comment or report about damage, shaking and activity at your home, city 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: 32 km SE of Tennant, CA.

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More information

Parameter Value Description
Magnitude 2.8 mb The magnitude for the event.
Longitude -121.6204987° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 41.3935013° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 8.3 km Depth of the event in kilometers.
Place 32km SE of Tennant, CA Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2018-04-29 10:34:25 Time when the event occurred. UTC/GMT
Updated 2018-04-29 10:39:03 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 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 27 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.1872 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.13 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 147 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 nc73008166 Id of event.
Event Code 73008166 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,nc73008166, A comma-separated list of event ids that are associated to an event.

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