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Minor earthquake: M2.8 quake has struck near Tonkawa in Oklahoma

Earthquake location 36.5934S, -97.3628WA minor earthquake magnitude 2.8 (ml/mb) has occurred on Tuesday, 10 kilometers (6 miles) from Tonkawa in Oklahoma. Exact location of event, depth 6.632 km, -97.3628° West, 36.5934° North. Exact time and date of earthquake 14/10/15 / 2015-10-14 00:22:49 / October 14, 2015 @ 12:22 am UTC/GMT. The 2.8-magnitude earthquake was detected at 19:22:49 / 7:22 pm (local time epicenter). The earthquake occurred at a depth of 6.632 km (4 miles). Unique identifier: us10003nmk. Ids that are associated to the event: us10003nmk.

Epicenter of the event was 51 km (32 miles) from Enid (c. 49 400 pop), 60 km (37 miles) from Stillwater (c. 45 700 pop), 28 km (17 miles) from Ponca City (c. 25 400 pop), 60 km (37 miles) from Arkansas City (c. 12 400 pop), 75 km (46 miles) from Wellington (c. 8 200 pop). Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Wellington, Stillwater, Arkansas City. Country/countries that might be effected, United States (c. 310 233 000 pop).

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

Did you feel the quake?

How did you respond? Did any furniture slide, topple over, or become displaced? Leave a comment or report about activity, shaking and damage at your home, city and country. Read more about the earthquake, Location, Distances, Seismometer information, Date-Time, Parameters and details about this quake, reported near: 10 km SSW of Tonkawa, Oklahoma. This information comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 2.8 mb The magnitude for the event.
Longitude -97.3628° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 36.5934° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 6.632 km Depth of the event in kilometers.
Place 10km SSW 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 2015-10-14 00:22:49 Time when the event occurred. UTC/GMT
Updated 2015-10-14 23:27:51 Time when the event was most recently updated. UTC/GMT
Timezone offset -300 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 121 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 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.51 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 48 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type ml The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID us10003nmk Id of event.
Event Code 10003nmk An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us10003nmk, A comma-separated list of event ids that are associated to an event.

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