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Minor earthquake, 2.9 mag strikes near Blackwell in Oklahoma



Earthquake location 36.944S, -97.3636WA minor earthquake with magnitude 2.9 (ml/mb) was detected on Tuesday, 17 kilometers (11 miles) from Blackwell in Oklahoma. The epicenter was at a depth of 4.96 km (3 miles). The temblor was picked up at 00:42:17 / 12:42 am (local time epicenter). Exact location of event, depth 4.96 km, -97.3636° West, 36.944° North. Date and time of earthquake in UTC/GMT: 23/01/18 / 2018-01-23 06:42:17 / January 23, 2018 @ 6:42 am. All ids that are associated to the event: us2000cmx0. Unique identifier: us2000cmx0.

Closest city/cities/towns to epicentrum/hypocenter was Enid, Perry, Haysville (min 5000 pop). Earthquake epicenter was 76 km (47 miles) from Enid (c. 49 400 pop), 36 km (22 miles) from Ponca City (c. 25 400 pop), 67 km (42 miles) from Derby (c. 22 200 pop), 32 km (20 miles) from Arkansas City (c. 12 400 pop), 46 km (29 miles) from Winfield (c. 12 300 pop). Country/countries that might be effected, United States (c. 310 233 000 pop).

Each year there are an estimated 1,300,000 minor quakes in the world. In the past 24 hours, there have been one, in the last 10 days two, in the past 30 days six and in the last 365 days one hundred and thirteen earthquakes of magnitude 3.0 or greater that was reported nearby. Earthquakes 2.5 to 3.0 are often felt, but only causes minor damage.

Questions or comments?

Did objects rattle, topple over, or fall off shelves? Leave a comment or report about activity, shaking and damage at your home, country and city. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 17 km NNW of Blackwell, Oklahoma. This data comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 2.9 mb The magnitude for the event.
Longitude -97.3636° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 36.944° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 4.96 km Depth of the event in kilometers.
Place 17km NNW of Blackwell, Oklahoma Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2018-01-23 06:42:17 Time when the event occurred. UTC/GMT
Updated 2018-01-23 07:32:24 Time when the event was most recently updated. UTC/GMT
Timezone offset -360 Timezone offset from UTC in minutes at the event epicenter.
Felt 1 The total number of felt reports
CDI 3.1 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 130 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 0.114 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.14 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 77 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 us2000cmx0 Id of event.
Event Code 2000cmx0 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us2000cmx0, A comma-separated list of event ids that are associated to an event.

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