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Minor earthquake 2.8 mag, 33 km S of Alva, Oklahoma



Earthquake location 36.5063S, -98.7179WA minor earthquake with magnitude 2.8 (ml/mb) was detected on Saturday, 33 kilometers (21 miles) from Alva in Oklahoma. The 2.8-magnitude earthquake was detected at 05:49:37 / 5:49 am (local time epicenter). The epicenter was at a depth of 7.071 km (4 miles). Exact location of event, depth 7.071 km, -98.7179° West, 36.5063° North. Exact time and date of earthquake 30/01/16 / 2016-01-30 11:49:37 / January 30, 2016 @ 11:49 am UTC/GMT. Unique identifier: us20004w12. Ids that are associated to the event: us20004w12.

Close country/countries, United States (c. 310 233 000 pop) (That might be effected). Event epicenter was 76 km (47 miles) from Enid (c. 49 400 pop), 61 km (38 miles) from Woodward (c. 12 100 pop). Nearest city/cities or towns, with min 5000 pop, to epicentrum/hypocenter was Enid, Woodward.

Earthquakes 2.5 to 2.9 are often felt, but only causes minor damage. In the past 24 hours, there have been twenty-one, in the last 10 days twenty-seven, in the past 30 days sixty-three and in the last 365 days four hundred and sixty-two earthquakes of magnitude 3.0 or greater that was reported nearby. Each year there are an estimated 1,300,000 minor earthquakes in the world.

Questions or comments?

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: 33 km S of Alva, Oklahoma.

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More information

Parameter Value Description
Magnitude 2.8 mb The magnitude for the event.
Longitude -98.7179° West Decimal degrees longitude. Negative values for western longitudes.
Latitude 36.5063° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 7.071 km Depth of the event in kilometers.
Place 33km 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 2016-01-30 11:49:37 Time when the event occurred. UTC/GMT
Updated 2016-02-15 08:44:04 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 121 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 0.68 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 119 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 us20004w12 Id of event.
Event Code 20004w12 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us20004w12, A comma-separated list of event ids that are associated to an event.

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