Minor earthquake: M3.1 quake has struck near Helena in Oklahoma

A minor earthquake with magnitude 3.1 (ml/mb) was reported 24 kilometers (15 miles) from Helena in Oklahoma on Friday. The temblor was reported at 14:45:23 / 2:45 pm (local time epicenter). Exact location of earthquake, longitude -98.5394 West, latitude 36.4917 North, depth = 16 km. Event ids that are associated to the earthquake: us20004vmk. Id of event: us20004vmk. The earthquake occurred at a depth of 16 km (10 miles) below the earth’s surface. Global time and date of event 29/01/16 / 2016-01-29 20:45:23 / January 29, 2016 @ 8:45 pm UTC/GMT.

Epicenter of the event was 60 km (37 miles) from Enid (c. 49 400 pop), 76 km (47 miles) from Woodward (c. 12 100 pop), 73 km (45 miles) from Watonga (c. 5 100 pop). Nearest cities/city/villages to epicentrum/hypocenter was Woodward, Watonga, Enid (min 5000 pop). Nearby country/countries that might be effected, United States (c. 310 233 000 pop).

Earthquakes 3.0 to 4.0 are often felt, but only causes minor damage. Every year there are an estimated 130,000 minor earthquakes in the world. In the past 24 hours, there have been three, in the last 10 days eleven, in the past 30 days fourty-eight and in the last 365 days five hundred and five earthquakes of magnitude 3.0 or greater that has struck near.

Questions or comments?

Were you asleep? Was it difficult to stand and/or walk? Leave a comment or report about shaking, activity and damage at your city, home 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: 24 km WSW of Helena, Oklahoma.

More information

Parameter	Value	Description
Magnitude	3.1 mb	The magnitude for the event.
Longitude	-98.5394° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	36.4917° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	16 km	Depth of the event in kilometers.
Place	24km WSW of Helena, Oklahoma	Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time	2016-01-29 20:45:23	Time when the event occurred. UTC/GMT
Updated	2016-01-29 20:56:54	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	148	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	0.255	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	1.02 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	45	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	us20004vmk	Id of event.
Event Code	20004vmk	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us20004vmk,	A comma-separated list of event ids that are associated to an event.

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Minor earthquake: M3.1 quake has struck near Helena in Oklahoma

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