Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 1.0 on date 25-09-2016 and time 03:51:36 (Italy) in region 5 km S Amatrice (RI)

A magnitude Md 1.0 earthquake occured in region: 5 km S Amatrice (RI), on

  • 25-09-2016 01:51:36 (UTC)
  • 25-09-2016 03:51:36 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.5850, 13.2910 at 14 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

Search earthquakes: Any within 30 km radius

The values of hypocentral coordinates and magnitude may be revised at a later time as more information becomes available.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Amatrice RI 5 2657 2657
Capitignano AQ 7 665 3322
Campotosto AQ 7 542 3864
Montereale AQ 8 2581 6445
Cittareale RI 11 482 6927
Accumoli RI 13 667 7594
Barete AQ 15 737 8331
Cagnano Amiterno AQ 15 1369 9700
Borbona RI 15 617 10317
Crognaleto TE 16 1297 11614
Pizzoli AQ 16 4326 15940
Posta RI 17 694 16634
Cortino TE 18 656 17290

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km NW of L'Aquila (69753 inhabitants)
35 Km W of Teramo (54892 inhabitants)
53 Km E of Terni (111501 inhabitants)
63 Km SE of Foligno (57155 inhabitants)
71 Km W of Montesilvano (53738 inhabitants)
77 Km W of Chieti (51815 inhabitants)
77 Km W of Pescara (121014 inhabitants)
80 Km NE of Guidonia Montecelio (88673 inhabitants)
80 Km NE of Tivoli (56533 inhabitants)
94 Km SE of Perugia (166134 inhabitants)
99 Km E of Viterbo (67173 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev100 		Md 1.0 2016-09-25
01:51:36		 42.5848 13.2907 15 2016-09-25
02:11:47		 Sala Sismica INGV-Roma 29501381
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2016-09-25 01:51:36 ± 0.25
Latitude 42.5848 ± 0.0081
Longitude 13.2907 ± 0.0122
Depth (km) 15 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 29501381

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 969
Semi-minor axis of confidence ellipse (meter) 563
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 151
Circular confidence region, given by single value of horizontal uncertainty (meter) 970.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 125
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.36
Epicentral distance of station closest to the epicenter (degree) 0.04946
Epicentral distance of station farthest from the epicenter (degree) 0.29048
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitude information

Md:1.0

Field Value
Value 1.0
Uncertainty 0.9
Num. used stations 4
Type of magnitude Md
Reference to an origin 29501381
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2016-09-25 02:11:47
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.T1241.HNN. 2016-09-25T01:51:48.31 0.6 undecidable manual S 21 32.2455 100 0.54 46
IV.TERO.HHZ. 2016-09-25T01:51:46.00 0.1 undecidable manual S 81 25.9518 104 -0.13 99
IV.T1242.HHZ. 2016-09-25T01:51:45.39 0.3 undecidable manual S 345 28.0497 102 -1.28 47
IV.T1243.HHZ. 2016-09-25T01:51:44.03 0.3 undecidable manual S 46 17.871 115 -0.07 76
IV.T1202.EHZ. 2016-09-25T01:51:43.82 0.6 undecidable manual S 338 14.1747 124 0.57 46
IV.T1246.HHZ. 2016-09-25T01:51:43.53 0.3 undecidable manual S 91 16.4724 118 -0.25 74
IV.T1204.EHZ. 2016-09-25T01:51:42.24 0.3 undecidable manual S 12 10.2786 136 -0.22 74
IV.TERO.HHZ. 2016-09-25T01:51:42.18 0.3 undecidable manual P 81 25.9518 104 0.06 75
IV.T1242.HHZ. 2016-09-25T01:51:42.00 0.6 undecidable manual P 345 28.0497 102 -0.43 46
IV.T1241.HNN. 2016-09-25T01:51:42.34 0.6 undecidable manual P 21 32.2455 100 -0.73 41
IV.RM33.EHZ. 2016-09-25T01:51:42.10 0.3 undecidable manual S 216 10.4784 135 -0.38 74
IV.SMA1.EHZ. 2016-09-25T01:51:41.70 0.3 undecidable manual S 36 6.1938 151 -0.1 77
IV.T1243.HHZ. 2016-09-25T01:51:41.17 0.1 undecidable manual P 46 17.871 115 0.22 99
IV.RM33.EHZ. 2016-09-25T01:51:40.04 0.3 undecidable manual P 216 10.4784 135 0.03 77
IV.T1204.EHZ. 2016-09-25T01:51:40.27 0.3 undecidable manual P 12 10.2786 136 0.27 74
IV.T1202.EHZ. 2016-09-25T01:51:40.99 0.1 undecidable manual P 338 14.1747 124 0.53 93
IV.T1246.HHZ. 2016-09-25T01:51:40.86 0.3 undecidable manual P 91 16.4724 118 0.1 76
IV.T1299.HNE. 2016-09-25T01:51:39.69 0.3 undecidable manual P 353 5.4945 154 0.12 77
IV.SMA1.EHZ. 2016-09-25T01:51:39.88 0.1 undecidable manual P 36 6.1938 151 0.26 100
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download