Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 1.0 on date 25-09-2016 and time 03:11:46 (Italy) in region 4 km S Amatrice (RI)

A magnitude Md 1.0 earthquake occured in region: 4 km S Amatrice (RI), on

  • 25-09-2016 01:11:46 (UTC)
  • 25-09-2016 03:11:46 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.6000, 13.3010 at 9 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 4 2657 2657
Campotosto AQ 7 542 3199
Capitignano AQ 9 665 3864
Montereale AQ 9 2581 6445
Accumoli RI 12 667 7112
Cittareale RI 12 482 7594
Crognaleto TE 16 1297 8891
Barete AQ 17 737 9628
Cagnano Amiterno AQ 17 1369 10997
Borbona RI 17 617 11614
Cortino TE 17 656 12270
Pizzoli AQ 18 4326 16596
Posta RI 19 694 17290
Arquata del Tronto AP 19 1178 18468

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km N of L'Aquila (69753 inhabitants)
34 Km W of Teramo (54892 inhabitants)
54 Km E of Terni (111501 inhabitants)
63 Km SE of Foligno (57155 inhabitants)
70 Km W of Montesilvano (53738 inhabitants)
76 Km W of Pescara (121014 inhabitants)
76 Km W of Chieti (51815 inhabitants)
82 Km NE of Guidonia Montecelio (88673 inhabitants)
82 Km NE of Tivoli (56533 inhabitants)
93 Km SE of Perugia (166134 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
01:11:46		 42.5998 13.3008 9 2016-09-25
01:29:23		 Sala Sismica INGV-Roma 29499621
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2016-09-25 01:11:46 ± 0.11
Latitude 42.5998 ± 0.0054
Longitude 13.3008 ± 0.0086
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 29499621

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 684
Semi-minor axis of confidence ellipse (meter) 413
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 312
Circular confidence region, given by single value of horizontal uncertainty (meter) 680.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 67
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.28
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.39390
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 11
Magnitude information

Md:1.0

Field Value
Value 1.0
Uncertainty 0.2
Num. used stations 3
Type of magnitude Md
Reference to an origin 29499621
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2016-09-25 01:29:23
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SNAL.HHZ. 2016-09-25T01:13:06.99 3.0 undecidable manual Sg 15.38 0
IV.CTI.HHZ. 2016-09-25T01:12:27.74 3.0 undecidable manual Pg 4.01 0
IV.GIUL.HHZ. 2016-09-25T01:12:18.99 3.0 undecidable manual Sn 0.02 0
IV.SAMA.HHZ. 2016-09-25T01:11:55.33 3.0 undecidable manual P -0.01 0
IV.FAGN.HHE. 2016-09-25T01:11:54.80 0.1 undecidable manual P 148 43.7229 50 0.32 89
IV.MC2.EHE. 2016-09-25T01:11:52.79 0.1 undecidable manual P 345 35.742 50 -0.46 87
IV.T1243.HHZ. 2016-09-25T01:11:52.47 0.3 undecidable manual S 48 16.1727 118 0.12 73
IV.T1204.EHE. 2016-09-25T01:11:50.37 0.1 undecidable manual S 9 8.5803 135 0.15 98
IV.TERO.HHZ. 2016-09-25T01:11:50.94 0.1 undecidable manual P 84 24.8529 109 -0.34 92
IV.RM33.EHZ. 2016-09-25T01:11:50.83 0.1 undecidable manual S 215 12.2766 125 -0.38 93
IV.LNSS.HHN. 2016-09-25T01:11:50.97 0.1 undecidable manual P 271 21.2676 112 0.37 92
IV.T1243.HHZ. 2016-09-25T01:11:49.63 0.1 undecidable manual P 48 16.1727 118 -0.04 99
IV.SMA1.EHZ. 2016-09-25T01:11:49.52 0.1 undecidable manual S 39 4.3956 153 0.16 99
IV.T1299.HNE. 2016-09-25T01:11:49.00 0.1 undecidable manual S 338 4.0959 154 -0.32 95
IV.RM33.EHZ. 2016-09-25T01:11:49.36 0.1 undecidable manual P 215 12.2766 125 0.35 93
IV.T1202.EHE. 2016-09-25T01:11:49.13 0.1 undecidable manual P 332 13.0758 123 -0.01 100
IV.CAMP.HHE. 2016-09-25T01:11:48.74 0.1 undecidable manual P 129 11.3775 127 -0.12 98
IV.T1204.EHE. 2016-09-25T01:11:48.65 0.1 undecidable manual P 9 8.5803 135 0.21 97
IV.SMA1.EHZ. 2016-09-25T01:11:48.06 0.1 undecidable manual P 39 4.3956 153 0.12 99
IV.T1299.HNE. 2016-09-25T01:11:47.81 0.1 undecidable manual P 338 4.0959 154 -0.11 100
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