Minor earthquake 3.3 mag, 11 km E of Helena, Oklahoma

A minor earthquake magnitude 3.3 (mg/mb) has occurred on Wednesday, 11 kilometers (7 miles) from Helena in Oklahoma. The temblor was reported at 01:10:17 / 1:10 pm (local time epicenter) at a depth of 5 km (3 miles). Global time of event 2015-02-18 07:10:17 UTC/GMT. A tsunami warning has not been issued, according to the U.S. Geological Survey. Exact location of event, longitude -98.1404 West, latitude 36.5341 North, depth 5 km.

Close countries, United States (c. 310 233 000 pop). The epicenter was 28 km (17 miles) from Enid (c. 49 400 pop), 82 km (51 miles) from Blackwell (c. 7 100 pop), 81 km (50 miles) from Perry (c. 5 100 pop), 80 km (50 miles) from Watonga (c. 5 100 pop). Nearest city, towns to epicentrum/hypocenter was Blackwell, Perry, Watonga.

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Leave a comment or report about shaking, activity and damage at your home, city and country. Read more about the earthquake, Seismometer information, Date-Time, Location, Distances, Parameters and details about this quake, recorded in: 11 km E of Helena, Oklahoma.

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Parameter	Value	Description
Magnitude	3.3 mb	The magnitude for the event.
Longitude	-98.1404° West	Decimal degrees longitude. Negative values for western longitudes.
Latitude	36.5341° North	Decimal degrees latitude. Negative values for southern latitudes.
Depth	5 km	Depth of the event in kilometers.
Place	11km E 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	2015-02-18 19:10:17	Time when the event occurred. UTC/GMT
Updated	2015-02-18 19:26:12	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	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	168	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	0.129	Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square	0.33 sec	The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap	74	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	usb000tqdt	Id of event.
Event Code	b000tqdt	An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS	,usb000tqdt,	A comma-separated list of event ids that are associated to an event.

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Minor earthquake 3.3 mag, 11 km E of Helena, Oklahoma

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