Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 27-08-2016 and time 03:42:17 (Italy) in region 1 km W Amatrice (RI)

A magnitude ML 1.6 earthquake occured in region: 1 km W Amatrice (RI), on

  • 27-08-2016 01:42:17 (UTC)
  • 27-08-2016 03:42:17 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.6350, 13.2730 at 8 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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 1 2657 2657
Accumoli RI 7 667 3324
Cittareale RI 9 482 3806
Campotosto AQ 12 542 4348
Montereale AQ 12 2581 6929
Capitignano AQ 13 665 7594
Arquata del Tronto AP 16 1178 8772
Borbona RI 18 617 9389
Acquasanta Terme AP 19 2916 12305
Posta RI 19 694 12999
Cortino TE 19 656 13655
Crognaleto TE 20 1297 14952
Cagnano Amiterno AQ 20 1369 16321

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km NW of L'Aquila (69753 inhabitants)
36 Km W of Teramo (54892 inhabitants)
52 Km E of Terni (111501 inhabitants)
59 Km SE of Foligno (57155 inhabitants)
73 Km W of Montesilvano (53738 inhabitants)
79 Km W of Pescara (121014 inhabitants)
80 Km W of Chieti (51815 inhabitants)
84 Km NE of Guidonia Montecelio (88673 inhabitants)
84 Km NE of Tivoli (56533 inhabitants)
89 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
Bulletin
Rev1000 		ML 1.6 2016-08-27
01:42:17		 42.6348 13.273 8 2019-07-19
13:24:09		 Bollettino Sismico Italiano INGV 64626111
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2016-08-27 01:42:17 ± 0.07
Latitude 42.6348 ± 0.0045
Longitude 13.2730 ± 0.0061
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 64626111

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 421
Semi-minor axis of confidence ellipse (meter) 286
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 5
Circular confidence region, given by single value of horizontal uncertainty (meter) 420.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 99
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 24
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0.13310
Epicentral distance of station farthest from the epicenter (degree) 0.54949
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 15
Magnitude information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 26
Type of magnitude ML
Reference to an origin 64626111
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-01-11 14:02:17
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.GUMA.HHZ. 2016-08-27T01:42:34.11 0.6 undecidable manual S 6 47.7189 50 0.85 39
IV.FIAM.HHZ. 2016-08-27T01:42:31.41 0.6 undecidable manual S 197 42.624 50 -0.5 45
IV.MMO1.EHZ. 2016-08-27T01:42:28.00 0.6 undecidable manual S 8 29.6481 106 -0.17 50
IV.CESX.HHZ. 2016-08-27T01:42:28.05 0.3 undecidable manual P 267 56.0994 50 0.17 71
IV.GIGS.HHZ. 2016-08-27T01:42:28.60 0.6 undecidable manual S 129 31.746 105 -0.27 49
IV.T0110.HHZ. 2016-08-27T01:42:28.56 0.3 undecidable manual P 137 60.9945 50 -0.08 72
IV.VCEL.EHZ. 2016-08-27T01:42:27.67 0.3 undecidable manual P 120 53.502 50 0.19 71
IV.GUMA.HHZ. 2016-08-27T01:42:26.92 0.1 undecidable manual P 6 47.7189 50 0.33 93
IV.TERO.HHZ. 2016-08-27T01:42:26.83 0.6 undecidable manual S 93 27.0507 107 -0.47 47
IV.OFFI.HHZ. 2016-08-27T01:42:26.16 0.1 undecidable manual P 45 47.3193 50 -0.36 93
IV.FAGN.HHZ. 2016-08-27T01:42:26.77 0.3 undecidable manual P 148 48.2184 50 0.1 73
IV.FIAM.HHZ. 2016-08-27T01:42:25.70 0.3 undecidable manual P 197 42.624 50 -0.11 74
IV.ARRO.EHZ. 2016-08-27T01:42:25.57 0.3 undecidable manual P 262 41.9247 50 -0.12 74
IV.LNSS.HHZ. 2016-08-27T01:42:24.57 0.6 undecidable manual S 259 19.3695 114 -0.22 50
IV.T1243.HNZ. 2016-08-27T01:42:23.82 0.6 undecidable manual S 64 15.873 118 0.12 52
IV.MMO1.EHZ. 2016-08-27T01:42:23.57 0.3 undecidable manual P 8 29.6481 106 -0.08 76
IV.RM33.EHZ. 2016-08-27T01:42:23.75 0.6 undecidable manual S 199 14.7741 120 0.38 49
IV.CAMP.HHZ. 2016-08-27T01:42:23.90 0.3 undecidable manual S 135 15.6732 118 0.26 75
IV.GIGS.HHZ. 2016-08-27T01:42:23.84 0.3 undecidable manual P 129 31.746 105 -0.21 74
IV.TERO.HHZ. 2016-08-27T01:42:22.95 0.1 undecidable manual P 93 27.0507 107 -0.2 100
IV.CAMP.HHZ. 2016-08-27T01:42:21.31 0.1 positive manual P 135 15.6732 118 0.28 100
IV.LNSS.HHZ. 2016-08-27T01:42:21.31 0.1 undecidable manual P 259 19.3695 114 -0.39 97
IV.T1243.HNZ. 2016-08-27T01:42:21.12 0.3 undecidable manual P 64 15.873 118 0.05 79
IV.RM33.EHZ. 2016-08-27T01:42:21.30 0.1 positive manual P 199 14.7741 120 0.42 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ARRO.EHN. ML:1.3 0.000059935 0.42 AML other m 2016-08-27T01:42:33.14
IV.ARRO.EHE. ML:1.3 0.0000576 0.24 AML other m 2016-08-27T01:42:34.18
IV.T1243.HHN. ML:1.8 0.00062194845 0.14 AML other m 2016-08-27T01:42:24.99
IV.T1243.HHE. ML:2.0 0.00101175125 0.26 AML other m 2016-08-27T01:42:24.78
IV.T1243.HNN. ML:1.8 0.0006104994 0.1 AML other m 2016-08-27T01:42:25.04
IV.T1243.HNE. ML:2.0 0.00102537075 0.2504 AML other m 2016-08-27T01:42:24.78
IV.RM33.EHE. ML:1.6 0.0004294053 0.12 AML other m 2016-08-27T01:42:24.52
IV.RM33.EHN. ML:1.7 0.0005409652 0.12 AML other m 2016-08-27T01:42:24.31
IV.RM33.HNN. ML:1.7 0.00051405275 0.12 AML other m 2016-08-27T01:42:24.37
IV.RM33.HNE. ML:1.6 0.00043534335 0.12 AML other m 2016-08-27T01:42:24.46
IV.CAMP.HHE. ML:1.4 0.00023047185000000001 0.18 AML other m 2016-08-27T01:42:23.98
IV.CAMP.HHN. ML:1.1 0.00012575586 0.22 AML other m 2016-08-27T01:42:24.04
IV.LNSS.HHN. ML:1.5 0.0002749453 0.14 AML other m 2016-08-27T01:42:26.64
IV.LNSS.HHE. ML:1.7 0.0003721755 0.24 AML other m 2016-08-27T01:42:25.35
IV.TERO.HNN. ML:1.7 0.00029767315 0.08 AML other m 2016-08-27T01:42:27.26
IV.TERO.HHE. ML:1.8 0.00036473445000000007 0.06 AML other m 2016-08-27T01:42:26.98
IV.TERO.HHN. ML:1.8 0.00036062725 0.08 AML other m 2016-08-27T01:42:27.22
IV.GIGS.HHN. ML:0.9 0.000035319225 0.08 AML other m 2016-08-27T01:42:28.65
IV.GIGS.HHE. ML:1.0 0.000044152150000000004 0.08 AML other m 2016-08-27T01:42:28.76
IV.FIAM.HHE. ML:1.2 0.000053429825 0.52 AML other m 2016-08-27T01:42:37.06
IV.FIAM.HHN. ML:1.0 0.00003732237 0.28 AML other m 2016-08-27T01:42:35.03
IV.FAGN.HHE. ML:1.7 0.00012787715 0.66 AML other m 2016-08-27T01:42:43.48
IV.FAGN.HHN. ML:1.7 0.0001354494 0.46 AML other m 2016-08-27T01:42:38.27
IV.VCEL.EHN. ML:1.7 0.00011625937499999999 0.18 AML other m 2016-08-27T01:42:38.05
IV.T0110.HHN. ML:1.6 0.00007447770000000001 0.3 AML other m 2016-08-27T01:42:43.66
IV.T0110.HHE. ML:1.6 0.00007515708500000001 0.46 AML other m 2016-08-27T01:42:38.77
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