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Minor World Earthquakes Magnitude -3.9

Minor earthquake, 3.1 mag was detected near Alva in Oklahoma


Earthquake location 36.7083S, -98.6523WA minor earthquake with magnitude 3.1 (ml/mb) was detected on Sunday, 10 kilometers (6 miles) from Alva in Oklahoma. The 3.1-magnitude earthquake was detected at 15:18:22 / 3:18 pm (local time epicenter). The epicenter of the earthquake was roughly 4.869 km (3 miles) below the earth’s surface. A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Event id: us20002l14. Ids that are associated to the earthquake: us20002l14. Global time and date of event 31/05/15 / 2015-05-31 20:18:22 / May 31, 2015 @ 8:18 pm UTC/GMT. Exact location of event, depth 4.869 km, -98.6523° West, 36.7083° North.

Close country/countries that might be effected, United States (c. 310 233 000 pop). Earthquake epicenter was 77 km (48 miles) from Enid (c. 49 400 pop), 73 km (45 miles) from Woodward (c. 12 100 pop). Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Enid, Woodward.

In the past 24 hours, there have been thirty-four, in the last 10 days fourty-three, in the past 30 days sixty-two and in the last 365 days four hundred and fourty earthquakes of magnitude 3.0 or greater that was reported nearby. Each year there are an estimated 130,000 minor quakes in the world.

Did you feel it?

How did you respond? Did any furniture slide, topple over, or become displaced? Leave a comment or report about activity, shaking 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: 10 km S of Alva, Oklahoma.

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More information

Parameter Value Description
Magnitude 3.1 mb The magnitude for the event.
Longitude -98.6523° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 36.7083° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 4.869 km Depth of the event in kilometers.
Place 10km S of Alva, Oklahoma Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2015-05-31 20:18:22 Time when the event occurred. UTC/GMT
Updated 2015-06-28 21:25:04 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 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 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.5 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 138 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 us20002l14 Id of event.
Event Code 20002l14 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us20002l14, A comma-separated list of event ids that are associated to an event.

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