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Minor earthquake 2.85 mag, 8 km ESE of Chickasha, Oklahoma

Earthquake location 35.02229309S, -97.84545898WA minor earthquake with magnitude 2.85 (ml/mb) was detected on Friday, 8 kilometers (5 miles) from Chickasha in Oklahoma. Exact location of event, depth 8.757774353 km, -97.84545898° West, 35.02229309° North. The 2.85-magnitude earthquake was detected at 01:31:13 / 1:31 am (local time epicenter). Global time and date of event 01/01/21 / 2021-01-01 01:31:13 / January 1, 2021 @ 1:31 am UTC/GMT. The earthquake was roughly at a depth of 8.757774353 km (5 miles). Event ids that are associated to the earthquake: ok2021aada. Id of event: ok2021aada.

Epicenter of the event was 58 km (36 miles) from Oklahoma City (c. 580 000 pop), 43 km (27 miles) from Norman (c. 110 900 pop), 68 km (42 miles) from Lawton (c. 96 900 pop), 48 km (30 miles) from Moore (c. 55 100 pop), 63 km (39 miles) from Midwest City (c. 54 400 pop). Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Choctaw, Piedmont, Lawton. Nearby country/countries, United States (c. 310 233 000 pop) (That might be effected).

Every year there are an estimated 1,300,000 minor earthquakes in the world. Earthquakes 2.5 to 2.9 are often felt, but only causes minor damage. 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 fifteen earthquakes of magnitude 3.0 or greater that have been detected nearby.

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. Read more about the earthquake, Distances, Seismometer information, Date-Time, Parameters, Location and details about this quake, that has struck: 8 km ESE of Chickasha, Oklahoma. This data comes from the USGS Earthquake Notification Service.

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More information

Parameter Value Description
Magnitude 2.85 mb The magnitude for the event.
Longitude -97.84545898° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 35.02229309° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 8.757774353 km Depth of the event in kilometers.
Place 8 km ESE of Chickasha, Oklahoma Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2021-01-01 01:31:13 Time when the event occurred. UTC/GMT
Updated 2021-01-01 01:32:31 Time when the event was most recently updated. UTC/GMT
Timezone offset 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 125 A number describing how significant the event is. Larger numbers indicate a more significant event.
Network ok The ID of a data contributor. Identifies the network considered to be the preferred source of information for this event.
Sources ,ok, A comma-separated list of network contributors.
Number of Stations Used 14 The total number of Number of seismic stations which reported P- and S-arrival times for this earthquake.
Horizontal Distance 0.2277306765 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 1.413596955 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 129.519577 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 ok2021aada Id of event.
Event Code 2021aada An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,ok2021aada, A comma-separated list of event ids that are associated to an event.

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