Minor earthquake, 2.9 mag was detected near Tonkawa in Oklahoma

A minor earthquake with magnitude 2.9 (ml/mb) was detected on Sunday, 20 kilometers (12 miles) from Tonkawa in Oklahoma. Unique identifier: us100048h6. Ids that are associated to the event: us100048h6. Exact time and date of earthquake 20/12/15 / 2015-12-20 16:18:58 / December 20, 2015 @ 4:18 pm UTC/GMT. The earthquake occurred at a depth of 5.94 km (4 miles). The 2.9-magnitude earthquake has occurred at 10:18:58 / 10:18 am (local time epicenter). Exact location of earthquake, -97.2068° West, 36.5166° North, depth 5.94 km.

Nearby country/countries, United States (c. 310 233 000 pop) (That might be effected). Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Guthrie, Cushing, Arkansas City. Epicenter of the event was 62 km (38 miles) from Enid (c. 49 400 pop), 47 km (29 miles) from Stillwater (c. 45 700 pop), 24 km (15 miles) from Ponca City (c. 25 400 pop), 62 km (39 miles) from Arkansas City (c. 12 400 pop), 74 km (46 miles) from Guthrie (c. 10 200 pop).

Earthquakes 2.5 to 3.0 are often felt, but only causes minor damage. Each year there are an estimated 1,300,000 minor earthquakes in the world. In the past 24 hours, there have been 0, in the last 10 days nine, in the past 30 days fourty-two and in the last 365 days seven hundred and eight earthquakes of magnitude 3.0 or greater that have been detected nearby.

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. 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: 20 km SSE of Tonkawa, Oklahoma.

More information

Parameter	Value	Description
Magnitude	2.9 mb	The magnitude for the event.
Longitude	-97.2068° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	36.5166° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	5.94 km	Depth of the event in kilometers.
Place	20km SSE of Tonkawa, Oklahoma	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2015-12-20 16:18:58	Time when the event occurred. UTC/GMT
Updated	2015-12-20 16:46:23	Time when the event was most recently updated. UTC/GMT
Timezone offset	-360	Timezone offset from UTC in minutes at the event epicenter.
Felt	0	The total number of felt reports
CDI	1	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	0.243	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.35 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	64	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	us100048h6	Id of event.
Event Code	100048h6	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us100048h6,	A comma-separated list of event ids that are associated to an event.

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Minor earthquake, 2.9 mag was detected near Tonkawa in Oklahoma

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