Minor earthquake, 3 mag strikes near Helena in Oklahoma

A minor earthquake with magnitude 3 (ml/mb) was reported 18 kilometers (11 miles) from Helena in Oklahoma on Tuesday. Exact location, longitude -98.4676° West, latitude 36.4982° North, depth = 5 km. All ids that are associated to the event: us200065sb. Unique identifier: us200065sb. The earthquake occurred at a depth of 5 km (3 miles). The temblor was picked up at 12:07:45 / 12:07 pm (local time epicenter). Global time and date of event 21/06/16 / 2016-06-21 17:07:45 / June 21, 2016 @ 5:07 pm UTC/GMT.

Earthquake epicenter was 54 km (34 miles) from Enid (c. 49 400 pop), 73 km (45 miles) from Watonga (c. 5 100 pop). Country/countries that might be effected, United States (c. 310 233 000 pop). Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Watonga, Enid.

Earthquakes 3.0 to 4.0 are often felt, but only causes minor damage. There are an estimated 130,000 minor quakes in the world each year. In the past 24 hours, there have been one, in the last 10 days seven, in the past 30 days eighteen and in the last 365 days four hundred and twenty earthquakes of magnitude 3.0 or greater that has occurred nearby.

Questions or comments?

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: 18 km WSW of Helena, Oklahoma. This data comes from the USGS Earthquake Notification Service.

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Parameter	Value	Description
Magnitude	3 mb	The magnitude for the event.
Longitude	-98.4676° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	36.4982° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	5 km	Depth of the event in kilometers.
Place	18km 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	2016-06-21 17:07:45	Time when the event occurred. UTC/GMT
Updated	2016-06-21 17:15:53	Time when the event was most recently updated. UTC/GMT
Timezone offset	-300	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	138	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	0.167	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.42 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	53	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	us200065sb	Id of event.
Event Code	200065sb	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,us200065sb,	A comma-separated list of event ids that are associated to an event.

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Minor earthquake, 3 mag strikes near Helena in Oklahoma

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