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Minor earthquake, 2.9 mag strikes near Hennessey in Oklahoma


Earthquake location 36.0998S, -97.8721WA minor earthquake with magnitude 2.9 (ml/mb) was reported 2 kilometers (1 miles) from Hennessey in Oklahoma on Friday. Global time and date of event 29/12/18 / 2018-12-29 04:05:57 / December 29, 2018 @ 4:05 am UTC/GMT. The epicenter of the earthquake was roughly 3.1 km (2 miles) below the earth’s surface. The temblor was picked up at 22:05:57 / 10:05 pm (local time epicenter). Event ids that are associated to the earthquake: us2000iytp. Id of event: us2000iytp. Exact location of event, longitude -97.8721 West, latitude 36.0998 North, depth = 3.1 km.

Close country/countries that might be effected, United States (c. 310 233 000 pop). Epicenter of the event was 61 km (38 miles) from Edmond (c. 81 400 pop), 33 km (20 miles) from Enid (c. 49 400 pop), 73 km (45 miles) from Stillwater (c. 45 700 pop), 67 km (41 miles) from Yukon (c. 22 700 pop), 68 km (42 miles) from Bethany (c. 19 100 pop). Nearest cities/city/villages to epicentrum/hypocenter was Stillwater, Bethany, Warr Acres (min 5000 pop).

Earthquakes 2.5 to 3.0 are often felt, but only causes minor damage. In the past 24 hours, there have been one, in the last 10 days one, in the past 30 days five and in the last 365 days ninety-eight earthquakes of magnitude 3.0 or greater that has struck near. Every year there are an estimated 1,300,000 minor earthquakes in the world.

Did you feel the quake?

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: 2 km ESE of Hennessey, Oklahoma.

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More information

Parameter Value Description
Magnitude 2.9 mb The magnitude for the event.
Longitude -97.8721° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 36.0998° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 3.1 km Depth of the event in kilometers.
Place 2km ESE of Hennessey, Oklahoma Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2018-12-29 04:05:57 Time when the event occurred. UTC/GMT
Updated 2018-12-29 04:17:03 Time when the event was most recently updated. UTC/GMT
Timezone offset -360 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 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 129 A number describing how significant the event is. Larger numbers indicate a more significant event.
Network us The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources ,us, A comma-separated list of network contributors.
Number of Stations Used The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.382 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.2 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 33 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type mb_lg The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID us2000iytp Id of event.
Event Code 2000iytp An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us2000iytp, A comma-separated list of event ids that are associated to an event.

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