Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 09-04-2017 and time 00:55:08 (Italy) in region 9 km E Norcia (PG)

A magnitude ML 1.2 earthquake occured in region: 9 km E Norcia (PG), on

  • 08-04-2017 22:55:08 (UTC)
  • 09-04-2017 00:55:08 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7980, 13.1980 at 9 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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 9 4957 4957
Arquata del Tronto AP 9 1178 6135
Castelsantangelo sul Nera MC 11 281 6416
Accumoli RI 12 667 7083
Montegallo AP 12 523 7606
Montemonaco AP 16 604 8210
Preci PG 16 724 8934
Ussita MC 17 444 9378
Visso MC 17 1107 10485
Cascia PG 17 3217 13702
Acquasanta Terme AP 18 2916 16618

Municipalities with at least 50000 inhabitants

An earthquake occurred to
44 Km E of Foligno (57155 inhabitants)
44 Km W of Teramo (54892 inhabitants)
52 Km NE of Terni (111501 inhabitants)
52 Km NW of L'Aquila (69753 inhabitants)
74 Km E of Perugia (166134 inhabitants)
84 Km W of Montesilvano (53738 inhabitants)
91 Km W of Pescara (121014 inhabitants)
94 Km NW of Chieti (51815 inhabitants)
95 Km S of Ancona (100861 inhabitants)
97 Km NE of Guidonia Montecelio (88673 inhabitants)
98 Km NE of Tivoli (56533 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
Reviewed
Rev100 		ML 1.2 2017-04-08
22:55:08		 42.7977 13.1978 9 2017-04-08
23:02:49		 Sala Sismica INGV-Roma 43583461
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2017-04-08 22:55:08 ± 0.04
Latitude 42.7977 ± 0.0018
Longitude 13.1978 ± 0.0025
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 43583461

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 192
Semi-minor axis of confidence ellipse (meter) 150
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 84
Circular confidence region, given by single value of horizontal uncertainty (meter) 190.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 49
Number of associated phases, regardless of their use for origin computation 44
Number of defining phases 44
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.53600
Number of stations at which the event was observed 25
Number of stations from which data was used for origin computation 25
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 21
Type of magnitude ML
Reference to an origin 43583461
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2017-04-08 23:02:49
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ARVD.HHZ. 2017-04-08T22:55:34.73 0.6 undecidable manual S 0.25 1.04
IV.EL6.EHZ. 2017-04-08T22:55:27.71 0.3 undecidable manual S 353 59.496 50 0.49 62
IV.GUMA.HHZ. 2017-04-08T22:55:20.07 0.6 undecidable manual S 21 31.4463 50 0.33 45
IV.CESI.HHZ. 2017-04-08T22:55:20.00 0.6 undecidable manual S 314 33.1446 50 -0.18 46
IV.CAMP.HHZ. 2017-04-08T22:55:19.88 0.6 undecidable manual S 149 33.744 50 -0.47 43
IV.EL6.EHZ. 2017-04-08T22:55:19.47 1.0 undecidable manual P 353 59.496 50 0.19 22
IV.RM33.EHZ. 2017-04-08T22:55:19.68 0.6 undecidable manual S 178 32.0457 50 -0.21 46
IV.T1219.EHZ. 2017-04-08T22:55:19.96 0.6 undecidable manual S 331 32.6451 50 -0.1 47
IV.ASSB.HHZ. 2017-04-08T22:55:18.03 0.3 positive manual P 302 51.5151 50 -0.02 69
IV.FDMO.HHZ. 2017-04-08T22:55:18.50 0.6 undecidable manual S 341 27.9498 108 -0.12 47
IV.MOMA.HHZ. 2017-04-08T22:55:18.08 0.6 negative manual P 271 51.1155 50 0.1 46
IV.T1217.EHZ. 2017-04-08T22:55:17.04 0.6 undecidable manual S 246 23.6541 111 -0.18 47
IV.T1256.HHZ. 2017-04-08T22:55:17.26 0.6 undecidable manual S 6 23.2545 111 0.18 47
IV.T1299.EHZ. 2017-04-08T22:55:16.25 0.1 undecidable manual S 159 19.3695 115 0.41 90
IV.ARRO.EHZ. 2017-04-08T22:55:16.52 1.0 negative manual P 236 42.7239 50 -0.17 23
IV.SMA1.EHZ. 2017-04-08T22:55:16.37 0.1 undecidable manual S 149 21.6672 113 -0.19 94
IV.T1211.EHZ. 2017-04-08T22:55:16.39 1.0 positive manual P 224 40.5261 50 0.04 24
IV.CESI.HHZ. 2017-04-08T22:55:15.44 1.0 negative manual P 314 33.1446 50 0.23 23
IV.T1241.EHZ. 2017-04-08T22:55:15.97 0.3 undecidable manual S 71 20.0688 114 -0.09 72
IV.TERO.HHZ. 2017-04-08T22:55:15.62 0.6 undecidable manual P 120 38.3283 50 -0.4 44
IV.T1218.EHZ. 2017-04-08T22:55:15.03 0.1 undecidable manual S 205 15.6732 120 0.34 92
IV.GUMA.HHZ. 2017-04-08T22:55:15.10 0.6 undecidable manual P 21 31.4463 50 0.15 47
IV.T1216.EHZ. 2017-04-08T22:55:15.27 0.1 undecidable manual S 305 17.871 117 -0.08 97
IV.RM33.EHZ. 2017-04-08T22:55:14.81 1.0 positive manual P 178 32.0457 50 -0.23 23
IV.MC2.EHZ. 2017-04-08T22:55:14.21 0.6 undecidable manual S 357 12.6762 125 0.4 46
IV.T1219.EHZ. 2017-04-08T22:55:14.93 1.0 negative manual P 331 32.6451 50 -0.21 23
IV.MMO1.EHZ. 2017-04-08T22:55:14.52 0.1 undecidable manual S 43 15.3735 120 -0.09 97
IV.CAMP.HHZ. 2017-04-08T22:55:14.97 0.6 positive manual P 149 33.744 50 -0.34 45
IV.FDMO.HHZ. 2017-04-08T22:55:14.15 0.6 negative manual P 341 27.9498 108 -0.16 47
IV.SMA1.EHZ. 2017-04-08T22:55:13.06 0.1 undecidable manual P 149 21.6672 113 -0.06 97
IV.T1256.HHZ. 2017-04-08T22:55:13.42 1.0 undecidable manual P 6 23.2545 111 0 24
IV.T1217.EHZ. 2017-04-08T22:55:13.54 0.6 negative manual P 246 23.6541 111 0.04 48
IV.T1212.EHZ. 2017-04-08T22:55:13.98 0.1 undecidable manual S 248 13.4754 124 -0.07 98
IV.T1218.EHZ. 2017-04-08T22:55:12.08 0.1 undecidable manual P 205 15.6732 120 0.04 98
IV.T1216.EHZ. 2017-04-08T22:55:12.35 0.1 undecidable manual P 305 17.871 117 -0.07 97
IV.T1241.EHZ. 2017-04-08T22:55:12.86 0.1 undecidable manual P 71 20.0688 114 0.03 98
IV.NRCA.HNZ. 2017-04-08T22:55:12.23 0.6 undecidable manual S 300 7.881 139 -0.35 47
IV.T1299.EHZ. 2017-04-08T22:55:12.94 0.1 undecidable manual P 159 19.3695 115 0.23 94
IV.T1212.EHZ. 2017-04-08T22:55:11.79 0.1 undecidable manual P 248 13.4754 124 0.12 97
IV.T1245.HHZ. 2017-04-08T22:55:11.91 0.1 undecidable manual S 353 6.5934 144 -0.39 93
IV.MC2.EHZ. 2017-04-08T22:55:11.80 0.1 undecidable manual P 357 12.6762 125 0.26 94
IV.MMO1.EHZ. 2017-04-08T22:55:11.98 0.1 undecidable manual P 43 15.3735 120 -0.02 99
IV.NRCA.HNZ. 2017-04-08T22:55:10.84 0.1 undecidable manual P 300 7.881 139 0.03 100
IV.T1245.HHZ. 2017-04-08T22:55:10.63 0.1 undecidable manual P 353 6.5934 144 -0.03 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ARRO.EHE. ML:0.9 0.00002435 1.38 AML other m 2017-04-08T22:55:24.05
IV.ARRO.EHN. ML:0.9 0.000027049999999999997 0.14 AML other m 2017-04-08T22:55:24.84
IV.ASSB.HHE. ML:1.0 0.0000241 0.18 AML other m 2017-04-08T22:55:25.81
IV.ASSB.HHN. ML:1.1 0.000029250000000000003 0.7 AML other m 2017-04-08T22:55:27.63
IV.CAMP.HHE. ML:0.8 0.0000279 0.2 AML other m 2017-04-08T22:55:20.18
IV.CAMP.HHN. ML:0.8 0.000028700000000000003 0.2 AML other m 2017-04-08T22:55:20.58
IV.CESI.HHE. ML:1.1 0.0000597 1.76 AML other m 2017-04-08T22:55:20.01
IV.CESI.HHN. ML:1.4 0.00010145 0.88 AML other m 2017-04-08T22:55:21.61
IV.EL6.EHE. ML:1.2 0.000028300000000000007 0.76 AML other m 2017-04-08T22:55:29.72
IV.EL6.EHN. ML:1.2 0.000032600000000000006 0.58 AML other m 2017-04-08T22:55:29.75
IV.FDMO.HHE. ML:1.2 0.0000748 0.18 AML other m 2017-04-08T22:55:20.40
IV.FDMO.HHN. ML:0.9 0.0000439 0.18 AML other m 2017-04-08T22:55:20.70
IV.GUMA.HHE. ML:1.5 0.0001555 0.26 AML other m 2017-04-08T22:55:22.03
IV.GUMA.HHN. ML:1.4 0.0001255 0.34 AML other m 2017-04-08T22:55:22.21
IV.MOMA.HHN. ML:1.1 0.000030350000000000002 0.22 AML other m 2017-04-08T22:55:27.42
IV.MOMA.HHE. ML:1.2 0.000040499999999999995 0.18 AML other m 2017-04-08T22:55:26.46
IV.NRCA.HHN. ML:2.1 0.0020150000000000003 0.28 AML other m 2017-04-08T22:55:12.57
IV.NRCA.HHE. ML:2.4 0.0038399999999999997 0.12 AML other m 2017-04-08T22:55:12.63
IV.NRCA.HNN. ML:2.1 0.00185 0.1 AML other m 2017-04-08T22:55:12.58
IV.NRCA.HNE. ML:2.4 0.003575 0.1 AML other m 2017-04-08T22:55:12.64
IV.RM33.EHN. ML:1.0 0.0000393 0.9 AML other m 2017-04-08T22:55:20.54
IV.RM33.EHE. ML:0.9 0.000033100000000000005 0.98 AML other m 2017-04-08T22:55:22.91
IV.SMA1.EHN. ML:1.1 0.00008560000000000001 0.2 AML other m 2017-04-08T22:55:17.88
IV.SMA1.EHE. ML:1.2 0.0001105 0.56 AML other m 2017-04-08T22:55:19.56
IV.T1211.EHE. ML:1.1 0.000045855 0.96 AML other m 2017-04-08T22:55:23.17
IV.T1211.EHN. ML:1.3 0.000062745 0.42 AML other m 2017-04-08T22:55:23.56
IV.T1216.EHN. ML:1.5 0.00027400000000000005 0.4 AML other m 2017-04-08T22:55:18.16
IV.T1216.EHE. ML:1.3 0.000153 0.58 AML other m 2017-04-08T22:55:17.36
IV.T1217.EHN. ML:1.0 0.00006815 0.4 AML other m 2017-04-08T22:55:19.40
IV.T1217.EHE. ML:1.0 0.0000709 0.46 AML other m 2017-04-08T22:55:18.28
IV.T1218.HNE. ML:2.2 0.0013855 1 AML other m 2017-04-08T22:55:12.80
IV.T1218.EHN. ML:1.3 0.000193 0.2 AML other m 2017-04-08T22:55:17.68
IV.T1218.HNN. ML:1.4 0.0002295 0.2 AML other m 2017-04-08T22:55:17.68
IV.T1218.EHE. ML:1.2 0.0001625 0.36 AML other m 2017-04-08T22:55:16.54
IV.T1219.EHN. ML:1.2 0.00006675000000000001 0.1 AML other m 2017-04-08T22:55:20.47
IV.T1219.EHE. ML:1.3 0.00007950000000000001 0.4 AML other m 2017-04-08T22:55:22.11
IV.T1241.EHE. ML:1.1 0.00008790000000000001 1.4 AML other m 2017-04-08T22:55:17.73
IV.T1241.EHN. ML:0.9 0.00006715 0.52 AML other m 2017-04-08T22:55:18.72
IV.T1245.HHE. ML:2.0 0.001845 1.04 AML other m 2017-04-08T22:55:12.73
IV.T1245.HHN. ML:2.0 0.00175 0.88 AML other m 2017-04-08T22:55:12.89
IV.T1245.HNN. ML:2.1 0.00196 0.88 AML other m 2017-04-08T22:55:12.89
IV.T1245.HNE. ML:2.0 0.0016899999999999999 1.04 AML other m 2017-04-08T22:55:12.73
IV.T1256.HHN. ML:0.9 0.0000536 1.16 AML other m 2017-04-08T22:55:21.86
IV.T1256.HHE. ML:0.8 0.00004645 0.62 AML other m 2017-04-08T22:55:20.61
IV.T1299.EHE. ML:0.8 0.0000486 0.46 AML other m 2017-04-08T22:55:20.42
IV.T1299.EHN. ML:1.2 0.0001275 0.94 AML other m 2017-04-08T22:55:16.66
IV.TERO.HHE. ML:1.4 0.0000842 0.12 AML other m 2017-04-08T22:55:21.59
IV.TERO.HHN. ML:1.6 0.0001307 0.14 AML other m 2017-04-08T22:55:21.38
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