Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 31-10-2016 and time 07:02:01 (Italy) in region 6 km E Norcia (PG)

A magnitude ML 2.0 earthquake occured in region: 6 km E Norcia (PG), on

  • 31-10-2016 06:02:01 (UTC)
  • 31-10-2016 07:02:01 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7730, 13.1570 at 14 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
Norcia PG 6 4957 4957
Accumoli RI 11 667 5624
Arquata del Tronto AP 12 1178 6802
Cascia PG 13 3217 10019
Castelsantangelo sul Nera MC 14 281 10300
Preci PG 15 724 11024
Montegallo AP 16 523 11547
Cittareale RI 17 482 12029
Visso MC 19 1107 13136
Amatrice RI 19 2657 15793
Ussita MC 19 444 16237
Poggiodomo PG 19 117 16354
Montemonaco AP 20 604 16958

Municipalities with at least 50000 inhabitants

An earthquake occurred to
42 Km E of Foligno (57155 inhabitants)
47 Km W of Teramo (54892 inhabitants)
48 Km NE of Terni (111501 inhabitants)
51 Km NW of L'Aquila (69753 inhabitants)
73 Km SE of Perugia (166134 inhabitants)
86 Km W of Montesilvano (53738 inhabitants)
93 Km NE of Guidonia Montecelio (88673 inhabitants)
93 Km W of Pescara (121014 inhabitants)
95 Km E of Viterbo (67173 inhabitants)
95 Km NE of Tivoli (56533 inhabitants)
95 Km NW of Chieti (51815 inhabitants)
98 Km SW of Ancona (100861 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 2.0 2016-10-31
06:02:01		 42.773 13.1567 14 2019-02-12
14:03:11		 Bollettino Sismico Italiano INGV 43338941
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2016-10-31 06:02:01 ± 0.04
Latitude 42.7730 ± 0.0018
Longitude 13.1567 ± 0.0025
Depth (km) 14 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 43338941

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 207
Semi-minor axis of confidence ellipse (meter) 77
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 226
Circular confidence region, given by single value of horizontal uncertainty (meter) 210.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 56
Number of associated phases, regardless of their use for origin computation 33
Number of defining phases 33
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.12
Epicentral distance of station closest to the epicenter (degree) 0.08633
Epicentral distance of station farthest from the epicenter (degree) 0.44247
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 17
Magnitude information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations 32
Type of magnitude ML
Reference to an origin 43338941
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2018-05-28 13:45:37
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.GIGS.HHZ. 2016-10-31T06:02:17.20 0.6 undecidable manual S 136 49.1175 95 -0.22 45
IV.TERO.HHZ. 2016-10-31T06:02:14.99 0.6 undecidable manual S 114 40.1265 96 -0.03 48
IV.T1246.HHN. 2016-10-31T06:02:13.50 0.6 undecidable manual S 127 34.5432 98 -0.05 48
IV.RM33.EHZ. 2016-10-31T06:02:12.28 0.3 undecidable manual S 171 29.6481 100 0.02 73
IV.T1241.EHZ. 2016-10-31T06:02:10.98 0.1 undecidable manual S 67 24.1536 104 0.15 96
IV.T1243.HNZ. 2016-10-31T06:02:10.86 0.6 undecidable manual S 110 25.2525 103 -0.25 47
IV.T1215.EHZ. 2016-10-31T06:02:10.85 0.6 undecidable manual S 278 23.6541 105 0.15 48
IV.GIGS.HHZ. 2016-10-31T06:02:10.69 0.3 undecidable manual P 136 49.1175 95 -0.13 69
IV.T1216.EHZ. 2016-10-31T06:02:09.00 0.6 undecidable manual S 319 17.1717 115 -0.07 49
IV.ARRO.EHZ. 2016-10-31T06:02:09.24 0.3 undecidable manual P 236 38.4282 97 0.05 71
IV.MMO1.HNZ. 2016-10-31T06:02:09.72 0.1 undecidable manual S 45 19.6692 110 0.03 99
IV.T1217.EHZ. 2016-10-31T06:02:09.40 0.6 undecidable manual S 250 19.5693 111 -0.26 47
IV.SMA1.EHZ. 2016-10-31T06:02:09.87 0.3 undecidable manual S 137 21.4674 108 -0.27 70
IV.LNSS.HHZ. 2016-10-31T06:02:09.92 0.3 undecidable manual S 207 21.1677 108 -0.13 73
IV.TERO.HHZ. 2016-10-31T06:02:09.37 0.1 undecidable manual P 114 40.1265 96 -0.07 95
IV.T1299.HNN. 2016-10-31T06:02:09.44 0.6 undecidable manual S 146 18.4704 113 0.05 49
IV.T1246.HHN. 2016-10-31T06:02:08.49 0.1 undecidable manual P 127 34.5432 98 -0.1 95
IV.T1204.EHZ. 2016-10-31T06:02:08.89 0.1 undecidable manual S 129 16.872 116 -0.11 98
IV.T1201.HNN. 2016-10-31T06:02:08.82 0.6 undecidable manual S 149 14.9739 120 0.28 47
IV.T1245.HHZ. 2016-10-31T06:02:07.27 0.3 undecidable manual S 15 9.5793 137 -0.16 73
IV.RM33.EHZ. 2016-10-31T06:02:07.93 0.3 undecidable manual P 171 29.6481 100 0.08 72
IV.T1241.EHZ. 2016-10-31T06:02:07.07 0.1 undecidable manual P 67 24.1536 104 0.05 98
IV.T1243.HNZ. 2016-10-31T06:02:07.10 0.3 undecidable manual P 110 25.2525 103 -0.08 73
IV.T1217.EHZ. 2016-10-31T06:02:06.33 0.1 positive manual P 250 19.5693 111 -0.01 99
IV.T1215.EHZ. 2016-10-31T06:02:06.90 0.1 undecidable manual P 278 23.6541 105 -0.05 98
IV.T1299.HNN. 2016-10-31T06:02:06.36 0.1 undecidable manual P 146 18.4704 113 0.17 96
IV.MMO1.HNZ. 2016-10-31T06:02:06.51 0.3 undecidable manual P 45 19.6692 110 0.15 73
IV.T1204.EHZ. 2016-10-31T06:02:06.10 0.1 positive manual P 129 16.872 116 0.14 97
IV.LNSS.HHZ. 2016-10-31T06:02:06.65 0.3 undecidable manual P 207 21.1677 108 0.08 73
IV.SMA1.EHZ. 2016-10-31T06:02:06.66 0.3 undecidable manual P 137 21.4674 108 0.04 74
IV.T1216.EHZ. 2016-10-31T06:02:05.97 0.1 undecidable manual P 319 17.1717 115 -0.04 99
IV.T1245.HHZ. 2016-10-31T06:02:05.15 0.1 negative manual P 15 9.5793 137 0.09 100
IV.T1201.HNN. 2016-10-31T06:02:05.96 0.3 undecidable manual P 149 14.9739 120 0.26 71
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.T1245.HNN. ML:2.8 0.0068650085 0.208 AML other m 2016-10-31T06:02:07.87
IV.T1245.HHN. ML:2.8 0.006439683999999999 0.1984 AML other m 2016-10-31T06:02:07.87
IV.T1245.HHE. ML:2.5 0.0033079744999999997 0.2784 AML other m 2016-10-31T06:02:08.28
IV.T1245.HNE. ML:2.6 0.003628279 0.24 AML other m 2016-10-31T06:02:08.28
IV.T1204.EHN. ML:2.4 0.0017966342 0.1376 AML other m 2016-10-31T06:02:09.03
IV.LNSS.HHE. ML:1.8 0.00043710955 0.16 AML other m 2016-10-31T06:02:10.26
IV.LNSS.HHN. ML:2.2 0.00113882255 0.16 AML other m 2016-10-31T06:02:10.23
IV.T1204.EHE. ML:2.5 0.00255429855 0.2784 AML other m 2016-10-31T06:02:10.51
IV.T1217.HNE. ML:1.9 0.00056579905 0.08 AML other m 2016-10-31T06:02:10.48
IV.T1217.EHE. ML:1.9 0.0005355575000000002 0.096 AML other m 2016-10-31T06:02:10.48
IV.T1216.EHN. ML:2.3 0.0013618310500000002 0.08 AML other m 2016-10-31T06:02:10.49
IV.SMA1.EHE. ML:2.0 0.00067184765 0.1408 AML other m 2016-10-31T06:02:11.03
IV.T1215.HNE. ML:1.8 0.00039416335 0.08 AML other m 2016-10-31T06:02:11.27
IV.T1215.EHE. ML:1.9 0.0004236155 0.08 AML other m 2016-10-31T06:02:11.27
IV.T1215.HNN. ML:1.9 0.00045818595 0.08 AML other m 2016-10-31T06:02:11.28
IV.T1215.EHN. ML:1.9 0.0004378685 0.08 AML other m 2016-10-31T06:02:11.24
IV.T1216.EHE. ML:2.2 0.001094881 0.208 AML other m 2016-10-31T06:02:11.78
IV.SMA1.EHN. ML:2.1 0.0007571046500000001 0.2176 AML other m 2016-10-31T06:02:11.89
IV.T1217.EHN. ML:1.9 0.0005590547500000001 0.32 AML other m 2016-10-31T06:02:12.14
IV.T1217.HNN. ML:1.9 0.0004937947 0.32 AML other m 2016-10-31T06:02:12.14
IV.RM33.HNN. ML:1.8 0.0002776248 0.112 AML other m 2016-10-31T06:02:13.47
IV.RM33.EHN. ML:1.8 0.0002736808 0.1216 AML other m 2016-10-31T06:02:13.48
IV.RM33.HNE. ML:1.8 0.0002698292 0.1312 AML other m 2016-10-31T06:02:13.58
IV.RM33.EHE. ML:1.8 0.0002839281 0.1408 AML other m 2016-10-31T06:02:13.58
IV.ARRO.EHE. ML:1.9 0.00026626955 0.2208 AML other m 2016-10-31T06:02:15.30
IV.TERO.HHE. ML:2.3 0.00062576545 0.08 AML other m 2016-10-31T06:02:15.63
IV.TERO.HNE. ML:2.2 0.0005167720499999999 0.08 AML other m 2016-10-31T06:02:15.63
IV.TERO.HNN. ML:2.3 0.00069306735 0.1184 AML other m 2016-10-31T06:02:15.73
IV.TERO.HHN. ML:2.4 0.0007851105000000001 0.1184 AML other m 2016-10-31T06:02:15.73
IV.ARRO.EHN. ML:1.8 0.00019892395000000002 0.1792 AML other m 2016-10-31T06:02:16.27
IV.GIGS.HHE. ML:1.4 0.0000582815 0.1216 AML other m 2016-10-31T06:02:17.83
IV.GIGS.HHN. ML:1.3 0.00005689269499999999 0.2592 AML other m 2016-10-31T06:02:19.27
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