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Light earthquake: M4.6 quake has struck near Norcia in Italy


Earthquake location 42.805S, 13.0994WA light earthquake with magnitude 4.6 (ml/mb) was reported 1 kilometers (1 miles) from Norcia in Italy on Sunday. All ids that are associated to the event: us10007335. Unique identifier: us10007335. The 4.6-magnitude earthquake has occurred at 14:34:55 / 2:34 pm (local time epicenter). A tsunami warning has not been issued (Does not indicate if a tsunami actually did or will exist). Global date and time of event UTC/GMT: 30/10/16 / 2016-10-30 13:34:55 / October 30, 2016 @ 1:34 pm. Exact location of event, longitude 13.0994 East, latitude 42.805 North, depth = 10 km. The earthquake occurred at a depth of 10 km (6 miles).

The epicenter was 67 km (42 miles) from Perugia (c. 120 100 pop), 46 km (29 miles) from Terni (c. 97 100 pop), 94 km (58 miles) from Ancona (c. 90 000 pop), 95 km (59 miles) from Guidonia Montecelio (c. 67 500 pop), 36 km (22 miles) from Foligno (c. 47 700 pop), 91 km (57 miles) from Viterbo (c. 47 100 pop), 91 km (56 miles) from Montesilvano Marina (c. 46 000 pop). Closest city/cities/towns to epicentrum/hypocenter was Villanova, Subiaco, Capranica (min 5000 pop). Close country/countries that might be effected, Italy (c. 60 340 000 pop).

Earthquakes 4.0 to 5.0 are often felt, but only causes minor damage. In the past 24 hours, there have been seven, in the last 10 days seventeen, in the past 30 days nineteen and in the last 365 days fourty-seven earthquakes of magnitude 3.0 or greater that has occurred nearby. There are an estimated 13,000 light earthquakes in the world each year.

Did you feel the quake?

Did objects rattle, topple over, or fall off shelves? Leave a comment or report about activity, shaking and damage at your home, country and city. 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: 1 km NNE of Norcia, Italy.

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More information

Parameter Value Description
Magnitude 4.6 mb The magnitude for the event.
Longitude 13.0994° East Decimal degrees longitude. Negative values for western longitudes.
Latitude 42.805° North Decimal degrees latitude. Negative values for southern latitudes.
Depth 10 km Depth of the event in kilometers.
Place 1km NNE of Norcia, Italy Textual description of named geographic region near to the event. This may be a city name, or a Flinn-Engdahl Region name.
Time 2016-10-30 13:34:55 Time when the event occurred. UTC/GMT
Updated 2016-10-30 14:23:05 Time when the event was most recently updated. UTC/GMT
Timezone offset 60 Timezone offset from UTC in minutes at the event epicenter.
Felt The total number of felt reports
CDI 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 326 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 0.31 Horizontal distance from the epicenter to the nearest station (in degrees).
Root Mean Square 0.97 sec The root-mean-square (RMS) travel time residual, in sec, using all weights.
Azimuthal Gap 41 The largest azimuthal gap between azimuthally adjacent stations (in degrees).
Magnitude Type mb The method or algorithm used to calculate the preferred magnitude for the event.
Event Type earthquake Type of seismic event.
Event ID us10007335 Id of event.
Event Code 10007335 An identifying code assigned by, and unique from, the corresponding source for the event.
Event IDS ,us10007335, A comma-separated list of event ids that are associated to an event.

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