Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 1.1 on date 08-09-2016 and time 04:22:28 (Italy) in region 5 km W Amatrice (RI)

A magnitude Md 1.1 earthquake occured in region: 5 km W Amatrice (RI), on

  • 08-09-2016 02:22:28 (UTC)
  • 08-09-2016 04:22:28 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.6390, 13.2260 at 20 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
Cittareale RI 6 482 3139
Accumoli RI 7 667 3806
Montereale AQ 13 2581 6387
Capitignano AQ 15 665 7052
Campotosto AQ 15 542 7594
Borbona RI 16 617 8211
Arquata del Tronto AP 16 1178 9389
Posta RI 17 694 10083
Cascia PG 20 3217 13300
Cagnano Amiterno AQ 20 1369 14669

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km NW of L'Aquila (69753 inhabitants)
39 Km W of Teramo (54892 inhabitants)
48 Km E of Terni (111501 inhabitants)
55 Km SE of Foligno (57155 inhabitants)
77 Km W of Montesilvano (53738 inhabitants)
82 Km NE of Guidonia Montecelio (88673 inhabitants)
83 Km NE of Tivoli (56533 inhabitants)
83 Km W of Pescara (121014 inhabitants)
84 Km W of Chieti (51815 inhabitants)
86 Km SE of Perugia (166134 inhabitants)
95 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 1.1 2016-09-08
02:22:28		 42.6388 13.2263 20 2016-09-08
04:09:52		 Sala Sismica INGV-Roma 28521061
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2016-09-08 02:22:28 ± 0.44
Latitude 42.6388 ± 0.0153
Longitude 13.2263 ± 0.0245
Depth (km) 20 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 28521061

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2103
Semi-minor axis of confidence ellipse (meter) 569
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 234
Circular confidence region, given by single value of horizontal uncertainty (meter) 2100.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 145
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.64
Epicentral distance of station closest to the epicenter (degree) 0.06475
Epicentral distance of station farthest from the epicenter (degree) 0.29408
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitude information

Md:1.1

Field Value
Value 1.1
Uncertainty 0.1
Num. used stations 4
Type of magnitude Md
Reference to an origin 28521061
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2016-09-08 04:09:52
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.T1216.EHZ. 2016-09-08T02:22:39.11 0.1 undecidable manual S 329 32.6451 113 -0.63 86
IV.TERO.HHZ. 2016-09-08T02:22:38.28 0.1 undecidable manual S 93 30.8469 114 -1.03 67
IV.T1202.EHZ. 2016-09-08T02:22:38.32 0.1 undecidable manual S 359 7.1928 158 3.61 5
IV.T1241.HHZ. 2016-09-08T02:22:37.36 3.0 undecidable manual S 35 29.3484 116 -1.58 0
IV.T1247.HHZ. 2016-09-08T02:22:36.40 0.1 undecidable manual S 165 22.6551 124 -0.99 73
IV.NRCA.HHZ. 2016-09-08T02:22:36.95 0.1 undecidable manual S 337 23.4543 123 -0.62 87
IV.T1243.HHZ. 2016-09-08T02:22:36.74 0.1 undecidable manual S 70 19.1697 130 0.09 100
IV.T1216.EHZ. 2016-09-08T02:22:35.50 1.0 positive manual P 329 32.6451 113 0.7 20
IV.RM33.EHZ. 2016-09-08T02:22:35.46 0.1 undecidable manual S 184 14.4744 139 -0.28 96
IV.T1204.EHZ. 2016-09-08T02:22:35.38 0.1 undecidable manual S 61 8.4804 154 0.53 91
IV.MC2.EHZ. 2016-09-08T02:22:35.69 3.0 undecidable manual S 354 30.3474 115 -3.5 0
IV.MMO1.EHZ. 2016-09-08T02:22:35.03 3.0 undecidable manual S 16 30.0477 115 -4.08 0
IV.T1241.HHZ. 2016-09-08T02:22:35.10 1.0 positive manual P 35 29.3484 116 0.76 20
IV.SMA1.EHZ. 2016-09-08T02:22:34.60 0.1 undecidable manual S 96 8.9799 153 -0.31 95
IV.T1202.EHZ. 2016-09-08T02:22:34.58 3.0 positive manual P 359 7.1928 158 2.68 0
IV.NRCA.HHZ. 2016-09-08T02:22:34.79 0.1 positive manual P 337 23.4543 123 1.24 64
IV.T1243.HHZ. 2016-09-08T02:22:34.13 0.1 positive manual P 70 19.1697 130 1.11 71
IV.TERO.HHZ. 2016-09-08T02:22:34.94 0.3 positive manual P 93 30.8469 114 0.39 69
IV.MC2.EHZ. 2016-09-08T02:22:34.14 0.1 negative manual P 354 30.3474 115 -0.35 91
IV.MMO1.EHZ. 2016-09-08T02:22:33.79 0.1 undecidable manual P 16 30.0477 115 -0.65 83
IV.T1247.HHZ. 2016-09-08T02:22:33.81 1.0 undecidable manual P 165 22.6551 124 0.36 23
IV.RM33.EHZ. 2016-09-08T02:22:33.42 0.3 positive manual P 184 14.4744 139 0.93 57
IV.T1204.EHZ. 2016-09-08T02:22:33.43 1.0 undecidable manual P 61 8.4804 154 1.45 15
IV.SMA1.EHZ. 2016-09-08T02:22:32.71 1.0 positive manual P 96 8.9799 153 0.7 21
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
Waveforms Seismic signals in miniseed + resp format Download