Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 31-10-2016 and time 07:42:04 (Italy) in region 4 km E Norcia (PG)

A magnitude ML 2.0 earthquake occured in region: 4 km E Norcia (PG), on

  • 31-10-2016 06:42:04 (UTC)
  • 31-10-2016 07:42:04 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7800, 13.1440 at 10 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

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 4 4957 4957
Arquata del Tronto AP 13 1178 6135
Cascia PG 13 3217 9352
Accumoli RI 13 667 10019
Castelsantangelo sul Nera MC 13 281 10300
Preci PG 14 724 11024
Montegallo AP 17 523 11547
Visso MC 18 1107 12654
Cittareale RI 18 482 13136
Ussita MC 18 444 13580
Poggiodomo PG 19 117 13697
Cerreto di Spoleto PG 19 1075 14772

Municipalities with at least 50000 inhabitants

An earthquake occurred to
41 Km E of Foligno (57155 inhabitants)
47 Km NE of Terni (111501 inhabitants)
48 Km W of Teramo (54892 inhabitants)
52 Km NW of L'Aquila (69753 inhabitants)
71 Km SE of Perugia (166134 inhabitants)
87 Km W of Montesilvano (53738 inhabitants)
93 Km NE of Guidonia Montecelio (88673 inhabitants)
94 Km E of Viterbo (67173 inhabitants)
94 Km W of Pescara (121014 inhabitants)
95 Km NE of Tivoli (56533 inhabitants)
96 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
06:42:04		 42.7797 13.144 10 2019-02-12
14:03:26		 Bollettino Sismico Italiano INGV 50054191
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2016-10-31 06:42:04 ± 0.06
Latitude 42.7797 ± 0.0036
Longitude 13.1440 ± 0.0037
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 50054191

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 339
Semi-minor axis of confidence ellipse (meter) 201
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 210
Circular confidence region, given by single value of horizontal uncertainty (meter) 340.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 74
Number of associated phases, regardless of their use for origin computation 32
Number of defining phases 32
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0.08364
Epicentral distance of station farthest from the epicenter (degree) 0.73295
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 21
Magnitude information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations 41
Type of magnitude ML
Reference to an origin 50054191
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2018-05-28 16:17:59
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ARVD.HHZ. 2016-10-31T06:42:19.24 0.6 undecidable manual P 348 81.3519 50 0.31 41
IV.GUMA.HHZ. 2016-10-31T06:42:17.65 0.6 undecidable manual S 26 35.0427 50 0.75 39
IV.ATCC.EHZ. 2016-10-31T06:42:15.74 0.6 negative manual P 318 60.7947 50 -0.02 45
IV.EL6.EHZ. 2016-10-31T06:42:15.98 0.6 negative manual P 357 61.0944 50 0.17 44
IV.T1243.HNZ. 2016-10-31T06:42:14.08 0.3 undecidable manual S 110 26.4513 50 -0.52 65
IV.SNTG.HHZ. 2016-10-31T06:42:14.96 0.6 negative manual P 343 55.3002 50 0.05 46
IV.OFFI.HHZ. 2016-10-31T06:42:14.36 0.3 undecidable manual P 68 47.3193 50 0.68 59
IV.T1215.EHZ. 2016-10-31T06:42:13.17 0.3 undecidable manual S 276 22.5552 114 -0.2 70
IV.GIGS.HHZ. 2016-10-31T06:42:13.38 0.6 undecidable manual P 136 50.4162 50 -0.77 38
IV.ASSB.HHZ. 2016-10-31T06:42:13.78 0.3 negative manual P 307 49.0176 50 -0.17 68
IV.T1241.EHZ. 2016-10-31T06:42:13.72 0.3 undecidable manual S 70 24.8529 112 -0.39 67
IV.ARRO.EHZ. 2016-10-31T06:42:12.10 0.6 undecidable manual P 234 38.0286 50 -0.16 46
IV.T1299.HNN. 2016-10-31T06:42:12.65 0.6 undecidable manual S 145 19.6692 117 0.19 47
IV.MMO1.EHZ. 2016-10-31T06:42:12.22 0.3 undecidable manual S 48 19.9689 116 -0.32 69
IV.T1204.EHZ. 2016-10-31T06:42:12.07 0.3 undecidable manual S 129 18.1707 119 0.07 73
IV.T1217.EHZ. 2016-10-31T06:42:12.23 0.6 undecidable manual S 247 18.87 118 0.01 49
IV.T1216.EHZ. 2016-10-31T06:42:11.27 0.1 undecidable manual S 321 15.9729 122 -0.07 98
IV.T1201.HNN. 2016-10-31T06:42:11.90 0.6 undecidable manual S 147 16.0728 122 0.52 44
IV.GUMA.HHZ. 2016-10-31T06:42:11.95 0.3 undecidable manual P 26 35.0427 50 0.16 70
IV.T1211.EHZ. 2016-10-31T06:42:11.71 0.6 undecidable manual P 221 36.1416 50 -0.25 45
IV.T1243.HNZ. 2016-10-31T06:42:10.16 0.3 undecidable manual P 110 26.4513 50 -0.31 68
XO.AM05.EHZ. 2016-10-31T06:42:10.87 0.1 undecidable manual P 38 27.75 50 0.2 93
IV.T1217.EHZ. 2016-10-31T06:42:09.05 0.3 undecidable manual P 247 18.87 118 -0.04 73
IV.T1241.EHZ. 2016-10-31T06:42:09.79 0.6 undecidable manual P 70 24.8529 112 -0.4 45
IV.T1215.EHZ. 2016-10-31T06:42:09.73 0.6 undecidable manual P 276 22.5552 114 -0.03 49
IV.T1299.HNN. 2016-10-31T06:42:09.34 0.1 undecidable manual P 145 19.6692 117 0.11 96
IV.MMO1.EHZ. 2016-10-31T06:42:09.17 0.1 undecidable manual P 48 19.9689 116 -0.11 96
IV.T1245.HHZ. 2016-10-31T06:42:09.53 0.1 undecidable manual S 23 9.2796 137 0.01 100
IV.T1204.EHZ. 2016-10-31T06:42:08.98 0.3 undecidable manual P 129 18.1707 119 0.01 74
IV.T1216.EHZ. 2016-10-31T06:42:08.60 0.1 undecidable manual P 321 15.9729 122 0.01 99
IV.T1201.HNN. 2016-10-31T06:42:08.94 0.1 undecidable manual P 147 16.0728 122 0.33 92
IV.T1245.HHZ. 2016-10-31T06:42:07.68 0.1 negative manual P 23 9.2796 137 0.14 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.T1204.EHE. ML:0.0 0.001582412 0.2624 AML other m 2016-10-31T06:42:12.35
IV.T1204.EHN. ML:0.0 0.00099055385 0.2592 AML other m 2016-10-31T06:42:12.75
IV.RM33.HNN. ML:1.7 0.00023646307 0.208 AML other m 2016-10-31T06:42:21.73
IV.EL6.EHN. ML:0.0 0.00019834399999999996 0.1792 AML other m 2016-10-31T06:42:25.30
IV.GIGS.HHN. ML:0.0 0.000034812795 0.1792 AML other m 2016-10-31T06:42:26.37
IV.GIGS.HHE. ML:0.0 0.000069198045 0.1824 AML other m 2016-10-31T06:42:26.46
IV.EL6.EHE. ML:0.0 0.00024087750000000003 0.2208 AML other m 2016-10-31T06:42:27.23
IV.T1245.HNE. ML:2.5 0.0046134125 0.1696 AML other m 2016-10-31T06:42:10.49
IV.T1245.HNN. ML:2.6 0.0064423645 0.1728 AML other m 2016-10-31T06:42:10.05
IV.T1245.HHE. ML:2.5 0.004558951 0.16 AML other m 2016-10-31T06:42:10.50
IV.T1245.HHN. ML:2.7 0.006624718999999999 0.16 AML other m 2016-10-31T06:42:10.05
IV.T1216.EHE. ML:2.2 0.0016188425 0.192 AML other m 2016-10-31T06:42:12.85
IV.T1216.EHN. ML:2.3 0.00195581056 0.112 AML other m 2016-10-31T06:42:11.45
IV.T1217.EHE. ML:1.9 0.0006509975 0.224 AML other m 2016-10-31T06:42:14.48
IV.T1217.EHN. ML:2.0 0.00087744955 0.272 AML other m 2016-10-31T06:42:12.48
IV.T1217.HNE. ML:1.9 0.00067240435 0.224 AML other m 2016-10-31T06:42:14.48
IV.T1217.HNN. ML:2.0 0.00082432025 0.256 AML other m 2016-10-31T06:42:12.34
IV.T1215.EHE. ML:1.8 0.00036594799999999995 0.208 AML other m 2016-10-31T06:42:14.38
IV.T1215.HNE. ML:1.8 0.00036883536 0.208 AML other m 2016-10-31T06:42:14.37
IV.T1215.HNN. ML:1.7 0.00033901522 0.096 AML other m 2016-10-31T06:42:13.87
IV.T1215.EHN. ML:1.7 0.00034090066 0.112 AML other m 2016-10-31T06:42:15.96
IV.T1241.EHN. ML:2.0 0.00063450605 0.4192 AML other m 2016-10-31T06:42:20.19
IV.T1241.HNE. ML:2.1 0.0008016999999999968 0.16 AML other m 2016-10-31T06:42:14.49
IV.T1241.HNN. ML:2.0 0.0005990399999999987 0.4096 AML other m 2016-10-31T06:42:19.98
IV.T1241.EHE. ML:2.1 0.0008246156 0.3808 AML other m 2016-10-31T06:42:16.72
IV.T1211.EHN. ML:2.2 0.00069274065 0.256 AML other m 2016-10-31T06:42:17.36
IV.T1211.HNE. ML:1.8 0.00027246755 0.192 AML other m 2016-10-31T06:42:18.30
IV.T1211.EHE. ML:1.8 0.00026824649999999993 0.192 AML other m 2016-10-31T06:42:18.40
IV.T1211.HNN. ML:2.2 0.0006945523 0.256 AML other m 2016-10-31T06:42:17.48
IV.ARRO.EHE. ML:1.8 0.0002486884 0.24 AML other m 2016-10-31T06:42:19.04
IV.ARRO.EHN. ML:1.8 0.00020333000000000002 0.3392 AML other m 2016-10-31T06:42:22.06
IV.ASSB.HHE. ML:2.0 0.00026318345 0.1984 AML other m 2016-10-31T06:42:22.58
IV.ASSB.HHN. ML:2.0 0.0003007323 0.1792 AML other m 2016-10-31T06:42:22.69
IV.SNTG.HHE. ML:1.7 0.00010722989 0.1184 AML other m 2016-10-31T06:42:23.49
IV.SNTG.HHN. ML:1.7 0.00012130335 0.1184 AML other m 2016-10-31T06:42:23.35
IV.SNTG.HNE. ML:1.8 0.00015020125 0.3008 AML other m 2016-10-31T06:42:25.42
IV.SNTG.HNN. ML:1.8 0.00013669795000000002 0.4 AML other m 2016-10-31T06:42:29.59
IV.ATCC.EHN. ML:1.9 0.00015778950000000004 0.16 AML other m 2016-10-31T06:42:28.12
IV.ATCC.EHE. ML:1.9 0.00014719389999999998 0.32 AML other m 2016-10-31T06:42:30.06
IV.ARVD.HHE. ML:1.7 0.000070857215 0.2592 AML other m 2016-10-31T06:42:31.39
IV.ARVD.HHN. ML:1.4 0.000036732745 0.08 AML other m 2016-10-31T06:42:32.03
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