Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 31-10-2016 and time 19:38:07 (UTC) in region 7 km S Norcia (PG)

A magnitude ML 2.0 earthquake occured in region: 7 km S Norcia (PG), on

  • 31-10-2016 19:38:07 (UTC)
  • 31-10-2016 20:38:07 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7270, 13.1110 at 16 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 8 4957 4957
Cascia PG 8 3217 8174
Accumoli RI 12 667 8841
Cittareale RI 13 482 9323
Poggiodomo PG 14 117 9440
Monteleone di Spoleto PG 15 599 10039
Arquata del Tronto AP 16 1178 11217
Preci PG 18 724 11941
Amatrice RI 18 2657 14598
Cerreto di Spoleto PG 19 1075 15673
Castelsantangelo sul Nera MC 19 281 15954

Municipalities with at least 50000 inhabitants

An earthquake occurred to
42 Km SE of Foligno (57155 inhabitants)
42 Km E of Terni (111501 inhabitants)
48 Km NW of L'Aquila (69753 inhabitants)
49 Km W of Teramo (54892 inhabitants)
72 Km SE of Perugia (166134 inhabitants)
87 Km NE of Guidonia Montecelio (88673 inhabitants)
88 Km W of Montesilvano (53738 inhabitants)
89 Km N of Tivoli (56533 inhabitants)
89 Km E of Viterbo (67173 inhabitants)
95 Km W of Pescara (121014 inhabitants)
96 Km W of Chieti (51815 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
19:38:07		 42.7272 13.1108 16 2019-02-12
14:03:44		 Bollettino Sismico Italiano INGV 57403011
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2016-10-31 19:38:07 ± 0.07
Latitude 42.7272 ± 0.0036
Longitude 13.1108 ± 0.0024
Depth (km) 16 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 57403011

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 359
Semi-minor axis of confidence ellipse (meter) 77
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 8
Circular confidence region, given by single value of horizontal uncertainty (meter) 360.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 83
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) 0.14
Epicentral distance of station closest to the epicenter (degree) 0.12411
Epicentral distance of station farthest from the epicenter (degree) 0.46945
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 18
Magnitude information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations 50
Type of magnitude ML
Reference to an origin 57403011
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2018-05-31 14:46:14
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.TERO.HHZ. 2016-10-31T19:38:20.94 0.6 undecidable manual S 106 41.8248 100 -0.22 46
IV.CAMP.HHZ. 2016-10-31T19:38:18.45 0.6 undecidable manual S 131 32.2455 104 -0.2 47
IV.ARRO.EHZ. 2016-10-31T19:38:18.85 0.6 undecidable manual S 240 32.6451 104 0.11 48
IV.T1211.EHZ. 2016-10-31T19:38:18.17 0.6 undecidable manual S 224 30.0477 106 0.1 48
IV.OFFI.HHZ. 2016-10-31T19:38:17.31 0.3 undecidable manual P 64 52.1034 97 0.4 65
IV.T1243.HHZ. 2016-10-31T19:38:17.26 0.6 undecidable manual S 97 27.75 108 -0.23 47
IV.SMA1.EHZ. 2016-10-31T19:38:16.05 0.6 undecidable manual S 120 21.1677 115 0.18 48
IV.GIGS.HHZ. 2016-10-31T19:38:16.16 0.3 undecidable manual P 129 48.4182 98 -0.2 68
IV.RM33.EHZ. 2016-10-31T19:38:16.73 0.6 undecidable manual S 161 25.6521 110 -0.23 47
IV.ASSB.HHZ. 2016-10-31T19:38:16.72 0.3 undecidable manual P 314 50.7159 98 0.01 70
IV.T1216.EHZ. 2016-10-31T19:38:15.05 0.6 undecidable manual S 338 19.6692 118 -0.44 46
IV.T1215.EHZ. 2016-10-31T19:38:15.87 0.6 undecidable manual S 293 21.4674 115 -0.05 49
IV.T1204.EHZ. 2016-10-31T19:38:15.05 0.6 undecidable manual S 109 17.6712 122 0 50
IV.TERO.HHZ. 2016-10-31T19:38:15.30 0.3 undecidable manual P 106 41.8248 100 -0.05 71
IV.LNSS.HHZ. 2016-10-31T19:38:14.08 0.6 undecidable manual S 203 14.9739 128 -0.36 47
IV.T1217.EHZ. 2016-10-31T19:38:14.19 0.6 undecidable manual S 263 14.7741 128 -0.21 48
IV.ARRO.EHZ. 2016-10-31T19:38:14.02 0.3 undecidable manual P 240 32.6451 104 0.07 72
IV.T1299.HNN. 2016-10-31T19:38:14.87 0.6 undecidable manual S 126 17.3715 122 -0.1 49
IV.T1201.HNN. 2016-10-31T19:38:14.43 0.6 undecidable manual S 124 13.7751 131 0.23 47
IV.T1211.EHZ. 2016-10-31T19:38:13.60 0.3 undecidable manual P 224 30.0477 106 0.04 73
IV.T1241.EHZ. 2016-10-31T19:38:13.38 0.6 undecidable manual P 61 29.748 106 -0.15 47
IV.CAMP.HHZ. 2016-10-31T19:38:13.85 0.1 negative manual P 131 32.2455 104 -0.05 96
IV.T1243.HHZ. 2016-10-31T19:38:13.25 0.3 undecidable manual P 97 27.75 108 0.02 73
IV.RM33.EHZ. 2016-10-31T19:38:12.85 0.1 undecidable manual P 161 25.6521 110 -0.07 97
IV.T1216.EHZ. 2016-10-31T19:38:12.01 0.6 undecidable manual P 338 19.6692 118 -0.07 49
IV.SMA1.EHZ. 2016-10-31T19:38:12.48 0.1 undecidable manual P 120 21.1677 115 0.18 95
IV.T1215.EHZ. 2016-10-31T19:38:12.48 0.1 undecidable manual P 293 21.4674 115 0.15 96
IV.T1217.EHZ. 2016-10-31T19:38:11.52 0.1 positive manual P 263 14.7741 128 0.08 98
IV.T1299.HNN. 2016-10-31T19:38:11.85 0.1 undecidable manual P 126 17.3715 122 0.08 98
IV.T1204.EHZ. 2016-10-31T19:38:11.87 0.1 undecidable manual P 109 17.6712 122 0.05 99
IV.T1201.HNN. 2016-10-31T19:38:11.39 0.1 undecidable manual P 124 13.7751 131 0.06 99
IV.LNSS.HHZ. 2016-10-31T19:38:11.47 0.1 positive manual P 203 14.9739 128 0 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.T1256.HHN. ML:2.3 0.0008451449 0.2176 AML other m 2016-10-31T19:38:13.96
IV.T1256.HHE. ML:2.2 0.0006788247000000001 0.2432 AML other m 2016-10-31T19:38:13.77
IV.T1256.HNN. ML:2.3 0.0008739934999999999 0.2176 AML other m 2016-10-31T19:38:14.08
IV.T1256.HNE. ML:2.2 0.000725363 0.256 AML other m 2016-10-31T19:38:13.77
IV.LNSS.HHE. ML:2.1 0.0009967643 0.1792 AML other m 2016-10-31T19:38:14.27
IV.LNSS.HHN. ML:2.5 0.0026057795 0.1408 AML other m 2016-10-31T19:38:14.23
IV.T1217.HNN. ML:2.1 0.0009545364 0.064 AML other m 2016-10-31T19:38:14.36
IV.T1217.EHN. ML:2.1 0.0009727325 0.064 AML other m 2016-10-31T19:38:14.36
IV.T1217.HNE. ML:2.0 0.00081436865 0.064 AML other m 2016-10-31T19:38:14.36
IV.T1217.EHE. ML:2.0 0.00078264605 0.0768 AML other m 2016-10-31T19:38:14.32
IV.T1204.EHE. ML:2.0 0.00066375545 0.192 AML other m 2016-10-31T19:38:15.53
IV.T1204.EHN. ML:1.9 0.0005390405000000001 0.1664 AML other m 2016-10-31T19:38:15.16
IV.FDMO.HHE. ML:1.9 0.00032324890000000003 0.2304 AML other m 2016-10-31T19:38:15.00
IV.FDMO.HHN. ML:1.9 0.0003203107 0.4224 AML other m 2016-10-31T19:38:16.60
IV.T1216.EHE. ML:2.4 0.0016048858 0.256 AML other m 2016-10-31T19:38:13.66
IV.T1216.EHN. ML:2.4 0.00149358175 0.32 AML other m 2016-10-31T19:38:15.21
XO.AM05.HNN. ML:1.8 0.00023706085 0.2048 AML other m 2016-10-31T19:38:15.01
XO.AM05.EHE. ML:2.3 0.00074249645 0.1024 AML other m 2016-10-31T19:38:15.36
XO.AM05.EHN. ML:1.1 0.0000448801665 0.0768 AML other m 2016-10-31T19:38:16.68
XO.AM05.HNE. ML:1.7 0.000175141075 0.128 AML other m 2016-10-31T19:38:15.35
IV.SMA1.EHE. ML:2.0 0.0006936027499999999 0.1408 AML other m 2016-10-31T19:38:16.50
IV.SMA1.EHN. ML:1.9 0.0005321873 0.2304 AML other m 2016-10-31T19:38:17.16
IV.T1215.HNE. ML:1.8 0.00036172075000000004 0.0768 AML other m 2016-10-31T19:38:16.52
IV.T1215.EHN. ML:1.9 0.00047217599999999993 0.1152 AML other m 2016-10-31T19:38:16.28
IV.T1215.EHE. ML:1.8 0.000389729 0.0768 AML other m 2016-10-31T19:38:16.52
IV.T1215.HNN. ML:1.9 0.00046387585 0.1152 AML other m 2016-10-31T19:38:16.28
IV.RM33.EHN. ML:1.8 0.000335487 0.2304 AML other m 2016-10-31T19:38:16.96
IV.RM33.HNN. ML:1.8 0.00033212635000000004 0.192 AML other m 2016-10-31T19:38:16.96
IV.RM33.HNE. ML:1.9 0.0006335 0.7 AML other m 2016-10-31T19:38:17.09
IV.RM33.EHE. ML:2.0 0.00044796695000000005 0.1408 AML other m 2016-10-31T19:38:17.45
IV.GUMA.HHE. ML:2.8 0.0019206985 0.2432 AML other m 2016-10-31T19:38:17.44
IV.GUMA.HNN. ML:2.6 0.0013058375 0.4096 AML other m 2016-10-31T19:38:18.12
IV.GUMA.HHN. ML:2.7 0.0015465645000000002 0.192 AML other m 2016-10-31T19:38:17.54
IV.GUMA.HNE. ML:2.8 0.0019992355 0.256 AML other m 2016-10-31T19:38:17.43
IV.T1241.EHN. ML:1.9 0.00033338925 0.2432 AML other m 2016-10-31T19:38:16.89
IV.T1211.EHE. ML:2.0 0.0004367611 0.128 AML other m 2016-10-31T19:38:18.59
IV.T1211.HNE. ML:2.0 0.00045281285 0.1152 AML other m 2016-10-31T19:38:18.59
IV.T1211.HNN. ML:2.0 0.00046994500000000004 0.4096 AML other m 2016-10-31T19:38:18.95
IV.T1211.EHN. ML:2.0 0.0004900680000000001 0.192 AML other m 2016-10-31T19:38:19.05
IV.CAMP.HHN. ML:1.4 0.000104862065 0.256 AML other m 2016-10-31T19:38:18.75
IV.ARRO.EHN. ML:1.7 0.00021052134999999998 0.128 AML other m 2016-10-31T19:38:20.01
IV.ARRO.EHE. ML:1.8 0.00022541460000000002 0.2688 AML other m 2016-10-31T19:38:19.85
IV.TERO.HNE. ML:1.7 0.00016064997 0.0768 AML other m 2016-10-31T19:38:22.92
IV.TERO.HHE. ML:1.8 0.0001908229 0.0768 AML other m 2016-10-31T19:38:22.92
IV.TERO.HNN. ML:1.8 0.00018367475000000003 0.1408 AML other m 2016-10-31T19:38:21.68
IV.TERO.HHN. ML:1.8 0.00018672739999999998 0.1408 AML other m 2016-10-31T19:38:21.61
IV.GIGS.HHE. ML:1.2 0.000040545995 0.0896 AML other m 2016-10-31T19:38:23.48
IV.GIGS.HHN. ML:1.2 0.000043040755 0.0896 AML other m 2016-10-31T19:38:23.68
IV.ASSB.HHN. ML:1.8 0.000159164015 0.1792 AML other m 2016-10-31T19:38:26.75
IV.ASSB.HHE. ML:1.7 0.0001312312 0.2688 AML other m 2016-10-31T19:38:24.04
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