Minor earthquake, 3.9 mag strikes near Medford in Oklahoma

A minor earthquake with magnitude 3.9 (ml/mb) was detected on Friday, 13 kilometers (8 miles) from Medford in Oklahoma. The earthquake occurred at a depth of 5.49 km (3 miles). Global date and time of event UTC/GMT: 20/11/15 / 2015-11-20 22:55:51 / November 20, 2015 @ 10:55 pm. All ids that are associated to the event: us10003zyj. Unique identifier: us10003zyj. The 3.9-magnitude earthquake was detected at 16:55:51 / 4:55 pm (local time epicenter). Exact location of earthquake, -97.8221° West, 36.9086° North, depth 5.49 km.

The epicenter was 57 km (36 miles) from Enid (c. 49 400 pop), 69 km (43 miles) from Ponca City (c. 25 400 pop), 86 km (54 miles) from Derby (c. 22 200 pop), 72 km (45 miles) from Arkansas City (c. 12 400 pop), 82 km (51 miles) from Winfield (c. 12 300 pop), 84 km (52 miles) from Haysville (c. 10 800 pop). Close country/countries that might be effected, United States (c. 310 233 000 pop). Nearest cities/city/towns to hypocenter/epicentrum was Derby, Haysville, Perry (min 5000 pop).

In the past 24 hours, there have been eight, in the last 10 days twenty-one, in the past 30 days fifty-five and in the last 365 days five hundred and ninety earthquakes of magnitude 3.0 or greater that have been detected nearby. Earthquakes 3.0 to 4.0 are often felt, but only causes minor damage. Each year there are an estimated 130,000 minor quakes in the world.

Did you feel anything?

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. The information in this article comes from the USGS Earthquake Notification Service. Read more about the earthquake, Seismometer information, Distances, Parameters, Date-Time, Location and details about this quake, detected near: 13 km NW of Medford, Oklahoma.

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Parameter	Value	Description
Magnitude	3.9 mb	The magnitude for the event.
Longitude	-97.8221° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	36.9086° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	5.49 km	Depth of the event in kilometers.
Place	13km NW of Medford, Oklahoma	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2015-11-20 22:55:51	Time when the event occurred. UTC/GMT
Updated	2015-11-20 23:22:21	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	2.2	The maximum reported intensity for the event.
MMI	4.58	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	234	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	0.064	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.64 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	42	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	us10003zyj	Id of event.
Event Code	10003zyj	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us10003zyj,	A comma-separated list of event ids that are associated to an event.

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Minor earthquake, 3.9 mag strikes near Medford in Oklahoma

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