Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 31-10-2016 and time 13:55:30 (Italy) in region 3 km S Norcia (PG)

A magnitude ML 2.0 earthquake occured in region: 3 km S Norcia (PG), on

  • 31-10-2016 12:55:30 (UTC)
  • 31-10-2016 13:55:30 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7630, 13.0960 at 11 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 3 4957 4957
Cascia PG 8 3217 8174
Preci PG 14 724 8898
Poggiodomo PG 14 117 9015
Accumoli RI 15 667 9682
Castelsantangelo sul Nera MC 16 281 9963
Cerreto di Spoleto PG 16 1075 11038
Arquata del Tronto AP 17 1178 12216
Cittareale RI 17 482 12698
Monteleone di Spoleto PG 17 599 13297
Visso MC 19 1107 14404
Vallo di Nera PG 19 364 14768
Sellano PG 20 1079 15847

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km SE of Foligno (57155 inhabitants)
43 Km NE of Terni (111501 inhabitants)
51 Km W of Teramo (54892 inhabitants)
52 Km NW of L'Aquila (69753 inhabitants)
69 Km SE of Perugia (166134 inhabitants)
90 Km E of Viterbo (67173 inhabitants)
90 Km NE of Guidonia Montecelio (88673 inhabitants)
91 Km W of Montesilvano (53738 inhabitants)
92 Km N of Tivoli (56533 inhabitants)
97 Km W of Pescara (121014 inhabitants)
99 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
12:55:30		 42.7627 13.0957 11 2019-02-12
14:03:13		 Bollettino Sismico Italiano INGV 44891841
Reviewed
Rev100 		ML 2.4 2016-10-31
12:55:30		 42.7653 13.0925 11 2016-10-31
13:06:30		 Sala Sismica INGV-Roma 31270041
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2016-10-31 12:55:30 ± 0.03
Latitude 42.7627 ± 0.0018
Longitude 13.0957 ± 0.0024
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 44891841

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 200
Semi-minor axis of confidence ellipse (meter) 75
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 231
Circular confidence region, given by single value of horizontal uncertainty (meter) 200.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 36
Number of associated phases, regardless of their use for origin computation 66
Number of defining phases 62
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.47574
Number of stations at which the event was observed 38
Number of stations from which data was used for origin computation 34
Magnitudes information

ML:2.4

Field Value
Value 2.4
Uncertainty 0.3
Num. used stations 4
Type of magnitude ML
Reference to an origin 31270041
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2016-10-31 13:06:30

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations 19
Type of magnitude ML
Reference to an origin 44891841
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2017-05-05 11:33:59
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ARVD.HHZ. 2016-10-31T12:55:56.99 3.0 undecidable manual S 0 0
IV.EL6.EHZ. 2016-10-31T12:55:50.99 3.0 undecidable manual S -0.45 0
IV.FIAM.HHZ. 2016-10-31T12:55:48.99 3.0 undecidable manual S -0.26 0
IV.GIGS.HHZ. 2016-10-31T12:55:46.40 0.3 undecidable manual S 131 51.9036 90 -0.32 65
IV.ASSB.HHZ. 2016-10-31T12:55:45.80 0.3 undecidable manual S 311 47.1195 90 0.36 65
IV.TERO.HHZ. 2016-10-31T12:55:44.60 0.3 undecidable manual S 110 44.2224 90 -0.07 70
IV.T1247.HHZ. 2016-10-31T12:55:43.47 0.3 undecidable manual S 155 39.2274 90 0.13 70
IV.CSP1.EHZ. 2016-10-31T12:55:43.00 0.6 undecidable manual S 14 37.5291 90 0.12 47
IV.T1246.HHN. 2016-10-31T12:55:42.91 0.1 undecidable manual S 121 38.0286 90 -0.09 93
IV.CAMP.HHE. 2016-10-31T12:55:42.49 0.3 undecidable manual S 134 35.8419 90 0.06 72
IV.T1211.EHZ. 2016-10-31T12:55:41.40 0.6 undecidable manual S 218 32.1456 90 -0.05 48
IV.ARRO.EHZ. 2016-10-31T12:55:41.90 0.6 undecidable manual S 233 33.744 90 0.04 48
IV.SNTG.HHZ. 2016-10-31T12:55:41.17 3.0 undecidable manual P 0.58 0
IV.FDMO.HHZ. 2016-10-31T12:55:41.10 0.3 undecidable manual S 359 30.3474 90 0.14 71
IV.T1241.EHZ. 2016-10-31T12:55:40.50 0.1 undecidable manual S 69 29.2485 90 -0.15 94
IV.T1243.HHZ. 2016-10-31T12:55:40.40 0.1 undecidable manual S 104 29.6481 90 -0.38 89
IV.RM33.EHZ. 2016-10-31T12:55:40.70 0.6 undecidable manual S 161 29.748 90 -0.1 47
IV.T1256.HHZ. 2016-10-31T12:55:40.90 0.3 undecidable manual S 21 29.0487 90 0.29 69
IV.GIGS.HHZ. 2016-10-31T12:55:39.44 0.1 undecidable manual P 131 51.9036 90 -0.38 86
IV.ASSB.HHZ. 2016-10-31T12:55:39.22 0.1 undecidable manual P 311 47.1195 90 0.13 92
IV.SMA1.EHZ. 2016-10-31T12:55:39.60 0.1 undecidable manual S 127 24.4533 90 0.22 94
IV.GAG1.HNE. 2016-10-31T12:55:39.60 0.3 undecidable manual P 358 52.8027 90 -0.35 65
IV.MMO1.HNZ. 2016-10-31T12:55:39.20 0.3 undecidable manual S 51 24.1536 90 -0.1 72
IV.MDAR.HNN. 2016-10-31T12:55:39.60 0.6 undecidable manual P 5 47.8188 90 0.41 43
IV.OFFI.HHZ. 2016-10-31T12:55:39.45 1.0 undecidable manual P 68 51.6039 90 -0.33 22
IV.T1204.EHZ. 2016-10-31T12:55:38.20 0.6 undecidable manual S 118 20.4684 90 -0.11 48
IV.FEMA.HNE. 2016-10-31T12:55:38.76 0.3 undecidable manual S 350 22.4553 90 -0.08 73
IV.TERO.HHZ. 2016-10-31T12:55:38.43 0.3 undecidable manual P 110 44.2224 90 -0.21 68
IV.T1299.HNN. 2016-10-31T12:55:38.41 0.3 undecidable manual S 133 20.868 90 -0.01 73
IV.T1221.HNE. 2016-10-31T12:55:38.90 0.1 undecidable manual S 298 22.9548 90 -0.09 97
IV.SEF1.HNN. 2016-10-31T12:55:38.68 0.6 undecidable manual P 344 44.3223 90 0.04 47
IV.T1220.EHN. 2016-10-31T12:55:37.31 0.3 undecidable manual P 359 38.5281 90 -0.45 65
IV.CAMP.HHE. 2016-10-31T12:55:37.36 0.3 undecidable manual P 134 35.8419 90 0.01 72
IV.LNSS.HHZ. 2016-10-31T12:55:37.70 0.6 undecidable manual S 194 18.2706 90 -0.04 49
IV.T1244.EHZ. 2016-10-31T12:55:37.51 0.3 undecidable manual S 92 16.4724 90 0.26 71
IV.T1247.HHZ. 2016-10-31T12:55:37.95 0.3 undecidable manual P 155 39.2274 90 0.08 71
IV.T1201.HNN. 2016-10-31T12:55:37.66 0.3 undecidable manual S 133 17.2716 90 0.21 72
IV.T1215.EHZ. 2016-10-31T12:55:37.80 0.6 undecidable manual S 283 18.9699 90 -0.12 48
IV.T1246.HHN. 2016-10-31T12:55:37.67 0.6 undecidable manual P 121 38.0286 90 0 48
IV.CSP1.EHZ. 2016-10-31T12:55:37.61 0.3 undecidable manual P 14 37.5291 90 0 72
IV.T1211.EHZ. 2016-10-31T12:55:36.83 0.1 undecidable manual P 218 32.1456 90 0.05 96
IV.RM33.EHZ. 2016-10-31T12:55:36.79 0.3 undecidable manual P 161 29.748 90 0.38 68
IV.T1216.EHZ. 2016-10-31T12:55:36.80 0.1 undecidable manual S 336 15.4734 91 -0.19 96
IV.T1256.HHZ. 2016-10-31T12:55:36.17 0.3 undecidable manual P 21 29.0487 90 -0.12 71
XO.AM05.EHZ. 2016-10-31T12:55:36.71 0.1 undecidable manual P 41 31.6461 90 0.01 97
IV.T1241.EHZ. 2016-10-31T12:55:36.32 0.1 undecidable manual P 69 29.2485 90 0 97
IV.T1217.EHZ. 2016-10-31T12:55:36.60 0.1 undecidable manual S 247 14.4744 91 -0.13 97
IV.ARRO.EHZ. 2016-10-31T12:55:36.98 0.3 undecidable manual P 233 33.744 90 -0.04 72
IV.FDMO.HHZ. 2016-10-31T12:55:36.47 0.1 undecidable manual P 359 30.3474 90 -0.03 96
IV.T1243.HHZ. 2016-10-31T12:55:36.18 0.1 undecidable manual P 104 29.6481 90 -0.21 93
IV.T1245.HHZ. 2016-10-31T12:55:36.50 0.3 undecidable manual S 36 12.876 101 0.22 72
IV.T1299.HNN. 2016-10-31T12:55:35.20 0.1 undecidable manual P 133 20.868 90 0.17 96
IV.MMO1.HNZ. 2016-10-31T12:55:35.34 0.1 undecidable manual P 51 24.1536 90 -0.2 94
IV.T1221.HNE. 2016-10-31T12:55:35.46 0.3 undecidable manual P 298 22.9548 90 0.11 72
IV.NRCA.HHZ. 2016-10-31T12:55:35.00 0.1 undecidable manual S 11 7.9809 131 -0.15 96
IV.T1204.EHZ. 2016-10-31T12:55:35.01 0.1 undecidable manual P 118 20.4684 90 0.05 98
IV.FEMA.HNE. 2016-10-31T12:55:35.52 0.3 undecidable manual P 350 22.4553 90 0.25 70
IV.SMA1.EHZ. 2016-10-31T12:55:35.52 0.3 undecidable manual P 127 24.4533 90 -0.06 72
IV.T1201.HNN. 2016-10-31T12:55:34.73 0.1 undecidable manual P 133 17.2716 90 0.26 95
IV.T1215.EHZ. 2016-10-31T12:55:34.76 0.1 undecidable manual P 283 18.9699 90 0.02 99
IV.T1216.EHZ. 2016-10-31T12:55:34.23 0.1 undecidable manual P 336 15.4734 91 0.02 99
IV.T1244.EHZ. 2016-10-31T12:55:34.61 0.1 undecidable manual P 92 16.4724 90 0.25 95
IV.LNSS.HHZ. 2016-10-31T12:55:34.59 0.1 undecidable manual P 194 18.2706 90 -0.05 98
IV.T1217.EHZ. 2016-10-31T12:55:34.18 0.1 undecidable manual P 247 14.4744 91 0.12 98
IV.T1245.HHZ. 2016-10-31T12:55:33.92 0.1 undecidable manual P 36 12.876 101 0.12 98
IV.NRCA.HHZ. 2016-10-31T12:55:33.23 0.1 undecidable manual P 11 7.9809 131 0.09 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
XO.AM05.HNN. ML:1.6 0.00016333896 0.1024 AML other m 2016-10-31T12:55:44.13
XO.AM05.EHE. ML:2.2 0.0007581457499999999 0.1024 AML other m 2016-10-31T12:55:41.00
XO.AM05.EHN. ML:1.1 0.000057644295 0.0768 AML other m 2016-10-31T12:55:42.51
XO.AM05.HNE. ML:1.6 0.0001687514 0.096 AML other m 2016-10-31T12:55:42.75
IV.ARRO.EHN. ML:1.7 0.00020754715 0.1792 AML other m 2016-10-31T12:55:44.78
IV.ARRO.EHE. ML:1.8 0.0002517458 0.16 AML other m 2016-10-31T12:55:44.44
IV.ASSB.HHN. ML:1.7 0.00013957065 0.1792 AML other m 2016-10-31T12:55:46.67
IV.FDMO.HHN. ML:2.6 0.00214 0.74 AML other m 2016-10-31T12:55:50.64
IV.FDMO.HHE. ML:0.0 0.0037681500000000005 0.1216 AML other m 2016-10-31T12:55:50.32
IV.GIGS.HHE. ML:1.2 0.000041581845 0.2624 AML other m 2016-10-31T12:55:47.14
IV.LNSS.HHE. ML:1.8 0.000607 1.2 AML other m 2016-10-31T12:55:38.64
IV.LNSS.HHN. ML:2.3 0.001555 0.14 AML other m 2016-10-31T12:55:38.26
IV.OFFI.HHN. ML:2.6 0.0010685224999999999 0.6016 AML other m 2016-10-31T12:55:50.52
IV.OFFI.HHE. ML:2.3 0.00050586435 0.3584 AML other m 2016-10-31T12:55:51.36
IV.RM33.EHE. ML:1.9 0.00040324044999999996 0.416 AML other m 2016-10-31T12:55:42.30
IV.RM33.HNN. ML:1.8 0.00029042005 0.128 AML other m 2016-10-31T12:55:42.38
IV.RM33.HNE. ML:1.9 0.00039021485 0.2304 AML other m 2016-10-31T12:55:42.68
IV.RM33.EHN. ML:1.8 0.00029087605 0.16 AML other m 2016-10-31T12:55:42.38
IV.SMA1.EHN. ML:1.9 0.00045971300000000005 0.1792 AML other m 2016-10-31T12:55:41.80
IV.SMA1.EHE. ML:2.0 0.0006495917500000001 0.1984 AML other m 2016-10-31T12:55:40.34
IV.SNTG.HNE. ML:1.8 0.0001624228925 0.224 AML other m 2016-10-31T12:55:49.38
IV.SNTG.HHE. ML:1.8 0.000136059855 0.2624 AML other m 2016-10-31T12:55:49.38
IV.SNTG.HHN. ML:1.9 0.0001873802 0.1984 AML other m 2016-10-31T12:55:48.55
IV.T1204.EHN. ML:1.5 0.00024414899999999993 0.0576 AML other m 2016-10-31T12:55:40.30
IV.T1204.EHE. ML:1.8 0.0004574046 0.2624 AML other m 2016-10-31T12:55:41.43
IV.T1211.HNN. ML:2.0 0.000482168045 0.1088 AML other m 2016-10-31T12:55:43.19
IV.T1211.HNE. ML:1.9 0.00036436095000000004 0.096 AML other m 2016-10-31T12:55:42.69
IV.T1211.EHN. ML:2.0 0.0004872332 0.096 AML other m 2016-10-31T12:55:43.25
IV.T1211.EHE. ML:1.9 0.00037139100000000005 0.1408 AML other m 2016-10-31T12:55:42.62
IV.T1215.HNE. ML:2.1 0.0009431308000000001 0.064 AML other m 2016-10-31T12:55:38.41
IV.T1215.HNN. ML:2.0 0.000794988 0.0832 AML other m 2016-10-31T12:55:38.40
IV.T1215.EHN. ML:2.0 0.0007472285000000001 0.0832 AML other m 2016-10-31T12:55:38.40
IV.T1215.EHE. ML:2.1 0.000993008 0.064 AML other m 2016-10-31T12:55:38.44
IV.T1216.EHN. ML:2.4 0.00233387 0.096 AML other m 2016-10-31T12:55:37.50
IV.T1216.EHE. ML:2.2 0.001513684955 0.0768 AML other m 2016-10-31T12:55:37.69
IV.T1217.HNE. ML:2.3 0.001912265 0.064 AML other m 2016-10-31T12:55:36.87
IV.T1217.EHN. ML:2.1 0.00113319685 0.0832 AML other m 2016-10-31T12:55:37.10
IV.T1217.EHE. ML:2.3 0.00185186195 0.0832 AML other m 2016-10-31T12:55:36.88
IV.T1217.HNN. ML:2.1 0.00112101095 0.0832 AML other m 2016-10-31T12:55:37.06
IV.T1241.EHE. ML:2.0 0.00056609555 0.2432 AML other m 2016-10-31T12:55:41.63
IV.T1241.HNN. ML:2.0 0.000579695000000001 0.0768 AML other m 2016-10-31T12:55:40.97
IV.T1241.EHN. ML:2.0 0.00055647065 0.0768 AML other m 2016-10-31T12:55:40.92
IV.T1241.HNE. ML:2.0 0.0005664400000000001 0.2304 AML other m 2016-10-31T12:55:41.63
IV.T1245.HNN. ML:0.0 0.002287305 0.2752 AML other m 2016-10-31T12:55:37.51
IV.T1245.HHE. ML:2.3 0.0019160680000000002 0.2624 AML other m 2016-10-31T12:55:38.10
IV.T1245.HHN. ML:2.3 0.0021599085 0.1792 AML other m 2016-10-31T12:55:38.35
IV.T1245.HNE. ML:2.2 0.001975 0.36 AML other m 2016-10-31T12:55:36.64
IV.T1256.HHN. ML:2.2 0.0009005 0.34 AML other m 2016-10-31T12:55:52.69
IV.T1256.HHE. ML:2.3 0.0010135 0.3 AML other m 2016-10-31T12:55:52.84
IV.T1256.HNE. ML:2.3 0.0009417073500000001 0.1792 AML other m 2016-10-31T12:55:52.75
IV.T1256.HNN. ML:2.2 0.0008316102 0.1984 AML other m 2016-10-31T12:55:52.69
IV.TERO.HNN. ML:1.7 0.00016287085 0.1792 AML other m 2016-10-31T12:55:47.61
IV.TERO.HNE. ML:1.8 0.00018445704999999998 0.1152 AML other m 2016-10-31T12:55:46.51
IV.TERO.HHN. ML:1.8 0.0001753173 0.224 AML other m 2016-10-31T12:55:44.00
IV.TERO.HHE. ML:1.8 0.00020407570000000004 0.1152 AML other m 2016-10-31T12:55:46.57
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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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