Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 21-01-2017 and time 02:23:09 (UTC) in region 5 km SE Norcia (PG)

A magnitude ML 1.9 earthquake occured in region: 5 km SE Norcia (PG), on

  • 21-01-2017 02:23:09 (UTC)
  • 21-01-2017 03:23:09 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7670, 13.1440 at 10 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.

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 5 4957 4957
Accumoli RI 12 667 5624
Cascia PG 12 3217 8841
Arquata del Tronto AP 13 1178 10019
Castelsantangelo sul Nera MC 14 281 10300
Preci PG 15 724 11024
Cittareale RI 17 482 11506
Montegallo AP 18 523 12029
Poggiodomo PG 18 117 12146
Visso MC 19 1107 13253
Amatrice RI 19 2657 15910
Cerreto di Spoleto PG 20 1075 16985
Ussita MC 20 444 17429

Municipalities with at least 50000 inhabitants

An earthquake occurred to
42 Km SE of Foligno (57155 inhabitants)
47 Km E of Terni (111501 inhabitants)
47 Km W of Teramo (54892 inhabitants)
51 Km NW of L'Aquila (69753 inhabitants)
72 Km SE of Perugia (166134 inhabitants)
87 Km W of Montesilvano (53738 inhabitants)
92 Km NE of Guidonia Montecelio (88673 inhabitants)
93 Km E of Viterbo (67173 inhabitants)
94 Km NE of Tivoli (56533 inhabitants)
94 Km W of Pescara (121014 inhabitants)
96 Km W of Chieti (51815 inhabitants)
99 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
Reviewed
Rev100 		ML 1.9 2017-01-21
02:23:09		 42.7668 13.1445 10 2017-01-21
02:31:03		 Sala Sismica INGV-Roma 39455181
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2017-01-21 02:23:09 ± 0.04
Latitude 42.7668 ± 0.0027
Longitude 13.1445 ± 0.0037
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 39455181

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 346
Semi-minor axis of confidence ellipse (meter) 166
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 239
Circular confidence region, given by single value of horizontal uncertainty (meter) 350.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 109
Number of associated phases, regardless of their use for origin computation 52
Number of defining phases 32
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.44966
Number of stations at which the event was observed 36
Number of stations from which data was used for origin computation 19
Magnitude information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 30
Type of magnitude ML
Reference to an origin 39455181
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2017-01-21 02:31:03
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ARVD.HHZ. 2017-01-21T02:23:36.26 3.0 undecidable manual S -0.07 0
IV.FOSV.EHZ. 2017-01-21T02:23:31.48 3.0 undecidable manual S 0.01 0
IV.EL6.EHZ. 2017-01-21T02:23:30.58 3.0 undecidable manual S 0.29 0
IV.NARO.HHZ. 2017-01-21T02:23:27.77 3.0 negative manual P -0.53 0
IV.ASSB.HHZ. 2017-01-21T02:23:26.41 0.3 undecidable manual S 308 49.9167 50 0.46 64
IV.FRON.EHZ. 2017-01-21T02:23:25.61 3.0 undecidable manual P -0.32 0
IV.SSFR.HHZ. 2017-01-21T02:23:24.32 3.0 positive manual P 0.08 0
IV.ARVD.HHZ. 2017-01-21T02:23:24.70 3.0 negative manual P -0.02 0
IV.GUMA.HHZ. 2017-01-21T02:23:23.00 0.3 undecidable manual S 25 36.3414 50 0.69 60
IV.FAGN.HHZ. 2017-01-21T02:23:22.19 3.0 negative manual P 0.12 0
IV.CING.HHZ. 2017-01-21T02:23:22.05 3.0 negative manual P -0.14 0
IV.FOSV.EHZ. 2017-01-21T02:23:21.59 3.0 positive manual P -0.4 0
IV.EL6.EHZ. 2017-01-21T02:23:21.12 3.0 positive manual P -0.21 0
IV.CESI.HHZ. 2017-01-21T02:23:21.42 0.1 undecidable manual S 324 32.8449 50 0.03 96
IV.ATCC.EHZ. 2017-01-21T02:23:21.17 3.0 positive manual P -0.1 0
IV.CAMP.HHZ. 2017-01-21T02:23:21.54 0.1 undecidable manual S 140 33.5442 50 -0.03 96
IV.SNTG.HHZ. 2017-01-21T02:23:20.30 3.0 negative manual P -0.06 0
IV.RM33.EHZ. 2017-01-21T02:23:20.40 0.1 undecidable manual S 169 29.1486 50 -0.01 97
IV.FDMO.HHZ. 2017-01-21T02:23:20.80 0.3 undecidable manual S 351 30.2475 50 0.09 72
IV.CESX.HHZ. 2017-01-21T02:23:19.41 3.0 positive manual P 0.25 0
IV.T1215.EHZ. 2017-01-21T02:23:19.00 0.3 undecidable manual S 280 22.755 114 0.41 68
IV.GIGS.HHZ. 2017-01-21T02:23:19.04 3.0 positive manual P -0.21 0
IV.FIAM.HHZ. 2017-01-21T02:23:19.95 3.0 positive manual P -0.32 0
IV.OFFI.HHZ. 2017-01-21T02:23:19.61 3.0 undecidable manual P 0.68 0
IV.ASSB.HHZ. 2017-01-21T02:23:19.07 0.3 negative manual P 308 49.9167 50 -0.12 69
IV.SMA1.EHZ. 2017-01-21T02:23:18.58 0.3 undecidable manual S 134 21.6672 115 0.34 69
IV.T1222.EHZ. 2017-01-21T02:23:18.02 3.0 negative manual P 0.07 0
IV.MOMA.HHZ. 2017-01-21T02:23:18.90 3.0 negative manual P 0.07 0
IV.T1299.EHZ. 2017-01-21T02:23:17.75 0.3 undecidable manual S 143 18.4704 119 0.5 67
IV.T1247.HHZ. 2017-01-21T02:23:17.29 0.1 undecidable manual P 161 38.2284 50 -0.09 94
IV.GUMA.HHZ. 2017-01-21T02:23:17.12 0.1 positive manual P 25 36.3414 50 0.04 95
IV.LNSS.HHZ. 2017-01-21T02:23:17.92 0.3 undecidable manual S 205 20.0688 117 0.19 71
IV.ARRO.EHZ. 2017-01-21T02:23:17.28 0.1 undecidable manual P 236 37.2294 50 0.05 95
IV.T1220.EHZ. 2017-01-21T02:23:17.20 0.1 undecidable manual P 353 38.3283 50 -0.2 92
IV.CESI.HHZ. 2017-01-21T02:23:16.41 0.1 negative manual P 324 32.8449 50 -0.14 94
IV.MC2.EHZ. 2017-01-21T02:23:16.68 0.1 undecidable manual S 13 16.4724 121 0.05 98
IV.CAMP.HHZ. 2017-01-21T02:23:16.41 0.1 undecidable manual P 140 33.5442 50 -0.24 92
IV.RM33.EHZ. 2017-01-21T02:23:15.78 0.1 negative manual P 169 29.1486 50 -0.2 93
IV.FDMO.HHZ. 2017-01-21T02:23:15.83 0.1 undecidable manual P 351 30.2475 50 -0.32 91
IV.T1212.HNZ. 2017-01-21T02:23:14.30 0.1 undecidable manual S 258 8.2806 140 -0.16 98
IV.LNSS.HHZ. 2017-01-21T02:23:14.42 0.1 negative manual P 205 20.0688 117 -0.02 99
IV.T1299.EHZ. 2017-01-21T02:23:14.34 0.1 undecidable manual P 143 18.4704 119 0.18 96
IV.SMA1.EHZ. 2017-01-21T02:23:14.65 0.3 positive manual P 134 21.6672 115 -0.08 73
IV.T1217.EHZ. 2017-01-21T02:23:14.20 0.1 undecidable manual P 251 18.3705 119 0.06 98
IV.T1215.EHZ. 2017-01-21T02:23:14.87 0.3 negative manual P 280 22.755 114 -0.06 73
IV.T1202.EHZ. 2017-01-21T02:23:14.60 0.1 undecidable manual S 137 9.5793 136 -0.16 97
IV.MC2.EHZ. 2017-01-21T02:23:13.67 0.1 positive manual P 13 16.4724 121 -0.13 97
IV.T1216.EHZ. 2017-01-21T02:23:13.73 0.1 undecidable manual P 323 17.0718 120 -0.19 96
IV.T1202.EHZ. 2017-01-21T02:23:12.54 0.1 positive manual P 137 9.5793 136 -0.18 97
IV.T1212.HNZ. 2017-01-21T02:23:12.55 0.3 negative manual P 258 8.2806 140 0 76
IV.NRCA.HNZ. 2017-01-21T02:23:12.09 3.0 negative manual P -0.21 0
IV.T1218.EHZ. 2017-01-21T02:23:12.90 0.1 negative manual P 193 10.9779 132 -0.02 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ARRO.EHN. ML:1.6 0.000133 0.84 AML other m 2017-01-21T02:23:24.42
IV.ARRO.EHE. ML:1.5 0.0001245 0.7 AML other m 2017-01-21T02:23:32.46
IV.ARVD.HHN. ML:1.4 0.000036400000000000004 0.54 AML other m 2017-01-21T02:23:26.53
IV.ARVD.HHE. ML:1.5 0.0000468 1.16 AML other m 2017-01-21T02:23:38.78
IV.ASSB.HHN. ML:1.8 0.0001685 1.08 AML other m 2017-01-21T02:23:27.83
IV.ASSB.HHE. ML:1.7 0.000143 0.96 AML other m 2017-01-21T02:23:30.52
IV.ATCC.EHE. ML:1.8 0.000132 0.48 AML other m 2017-01-21T02:23:31.66
IV.ATCC.EHN. ML:1.8 0.000121 0.96 AML other m 2017-01-21T02:23:31.77
IV.CAMP.HHE. ML:1.4 0.0001215 1.44 AML other m 2017-01-21T02:23:22.80
IV.CAMP.HHN. ML:1.5 0.00012529999999999998 0.3 AML other m 2017-01-21T02:23:23.59
IV.CESI.HHN. ML:2.1 0.000565 1.04 AML other m 2017-01-21T02:23:22.17
IV.CESI.HHE. ML:1.8 0.000299 1.16 AML other m 2017-01-21T02:23:21.04
IV.CESX.HHE. ML:1.5 0.00008115 0.48 AML other m 2017-01-21T02:23:29.66
IV.CESX.HHN. ML:1.4 0.00007149999999999999 0.88 AML other m 2017-01-21T02:23:28.50
IV.CING.HHE. ML:1.6 0.00007115 0.42 AML other m 2017-01-21T02:23:37.04
IV.CING.HHN. ML:1.6 0.00006709999999999999 0.14 AML other m 2017-01-21T02:23:34.19
IV.EL6.EHE. ML:1.8 0.000136 0.78 AML other m 2017-01-21T02:23:31.40
IV.EL6.EHN. ML:2.0 0.0001895 0.16 AML other m 2017-01-21T02:23:32.32
IV.FDMO.HHE. ML:1.8 0.0002635 1 AML other m 2017-01-21T02:23:22.51
IV.FDMO.HHN. ML:1.7 0.0002455 0.22 AML other m 2017-01-21T02:23:22.55
IV.FIAM.HHE. ML:1.4 0.000064 0.2 AML other m 2017-01-21T02:23:29.82
IV.FIAM.HHN. ML:1.4 0.00005995 0.46 AML other m 2017-01-21T02:23:34.94
IV.FOSV.EHN. ML:3.9 0.014585 0.56 AML other m 2017-01-21T02:23:24.30
IV.FOSV.EHE. ML:1.6 0.0000726 0.42 AML other m 2017-01-21T02:23:31.77
IV.GUMA.HNN. ML:2.2 0.0006910000000000001 0.66 AML other m 2017-01-21T02:23:24.61
IV.GUMA.HHE. ML:2.2 0.0006695 0.22 AML other m 2017-01-21T02:23:24.29
IV.GUMA.HNE. ML:2.2 0.0005985000000000001 1.3 AML other m 2017-01-21T02:23:25.03
IV.GUMA.HHN. ML:2.3 0.0007099999999999999 1.34 AML other m 2017-01-21T02:23:25.70
IV.LNSS.HHE. ML:2.0 0.0008475000000000001 0.18 AML other m 2017-01-21T02:23:18.16
IV.LNSS.HHN. ML:2.0 0.0008435000000000001 0.34 AML other m 2017-01-21T02:23:19.62
IV.MOMA.HHN. ML:1.7 0.000154 0.42 AML other m 2017-01-21T02:23:29.50
IV.MOMA.HHE. ML:1.8 0.00019 1.26 AML other m 2017-01-21T02:23:28.18
IV.NRCA.HNE. ML:3.0 0.013399999999999999 0.16 AML other m 2017-01-21T02:23:13.98
IV.NRCA.HNN. ML:2.6 0.0064399999999999995 1.5 AML other m 2017-01-21T02:23:14.01
IV.OFFI.HHE. ML:1.9 0.000223 0.44 AML other m 2017-01-21T02:23:29.65
IV.OFFI.HHN. ML:2.1 0.0003185 0.42 AML other m 2017-01-21T02:23:33.27
IV.RM33.EHN. ML:1.8 0.0003515 1.76 AML other m 2017-01-21T02:23:20.92
IV.RM33.HNN. ML:1.9 0.000367 1.76 AML other m 2017-01-21T02:23:20.92
IV.RM33.EHE. ML:1.8 0.0002965 0.24 AML other m 2017-01-21T02:23:21.49
IV.RM33.HNE. ML:1.8 0.000335 0.48 AML other m 2017-01-21T02:23:21.37
IV.SMA1.EHN. ML:1.9 0.0005600000000000001 0.38 AML other m 2017-01-21T02:23:24.66
IV.SMA1.EHE. ML:2.2 0.000978 1.66 AML other m 2017-01-21T02:23:22.12
IV.SNTG.HHE. ML:1.5 0.00007400000000000001 1 AML other m 2017-01-21T02:23:30.20
IV.SNTG.HHN. ML:1.5 0.00007714999999999999 1.12 AML other m 2017-01-21T02:23:29.91
IV.SSFR.HHE. ML:2.1 0.00017549999999999998 0.2 AML other m 2017-01-21T02:23:36.43
IV.SSFR.HHN. ML:1.9 0.00011899999999999999 0.2 AML other m 2017-01-21T02:23:43.23
IV.T1202.EHE. ML:2.8 0.00841 0.26 AML other m 2017-01-21T02:23:14.86
IV.T1202.EHN. ML:3.1 0.0161 0.7 AML other m 2017-01-21T02:23:15.67
IV.T1212.EHE. ML:2.2 0.002045 0.24 AML other m 2017-01-21T02:23:14.50
IV.T1212.EHN. ML:2.2 0.0021349999999999997 0.58 AML other m 2017-01-21T02:23:15.01
IV.T1212.HNN. ML:2.2 0.00212 0.58 AML other m 2017-01-21T02:23:15.01
IV.T1212.HNE. ML:2.2 0.002145 0.26 AML other m 2017-01-21T02:23:14.50
IV.T1215.HNE. ML:1.7 0.000315 0.5 AML other m 2017-01-21T02:23:19.07
IV.T1215.HNN. ML:1.7 0.00029749999999999997 1.06 AML other m 2017-01-21T02:23:19.75
IV.T1215.EHN. ML:1.7 0.0003075 1.04 AML other m 2017-01-21T02:23:19.23
IV.T1215.EHE. ML:1.6 0.00028849999999999997 0.5 AML other m 2017-01-21T02:23:19.07
IV.T1216.EHE. ML:2.0 0.0009785 0.24 AML other m 2017-01-21T02:23:19.61
IV.T1216.EHN. ML:2.2 0.0012850000000000001 0.42 AML other m 2017-01-21T02:23:19.86
IV.T1217.EHN. ML:1.9 0.000631 0.4 AML other m 2017-01-21T02:23:20.16
IV.T1217.HNN. ML:1.9 0.000661 0.4 AML other m 2017-01-21T02:23:20.16
IV.T1217.EHE. ML:1.7 0.00040050000000000003 0.5 AML other m 2017-01-21T02:23:19.47
IV.T1217.HNE. ML:1.8 0.00044950000000000003 0.5 AML other m 2017-01-21T02:23:19.47
IV.T1218.EHE. ML:2.0 0.00126 0.48 AML other m 2017-01-21T02:23:17.15
IV.T1218.HNE. ML:2.0 0.001265 0.48 AML other m 2017-01-21T02:23:17.15
IV.T1218.HNN. ML:2.1 0.00159 0.22 AML other m 2017-01-21T02:23:17.08
IV.T1218.EHN. ML:2.1 0.0015550000000000002 0.22 AML other m 2017-01-21T02:23:17.08
IV.T1222.EHE. ML:1.6 0.00012575 1.1 AML other m 2017-01-21T02:23:28.23
IV.T1222.EHN. ML:1.4 0.00009104999999999999 1.04 AML other m 2017-01-21T02:23:25.97
IV.T1247.HHN. ML:1.9 0.0002685 0.34 AML other m 2017-01-21T02:23:27.39
IV.T1247.HHE. ML:1.8 0.00021999999999999998 0.96 AML other m 2017-01-21T02:23:26.56
IV.T1299.HNE. ML:2.0 0.0007210000000000001 0.7 AML other m 2017-01-21T02:23:19.85
IV.T1299.EHN. ML:1.8 0.000502 0.3 AML other m 2017-01-21T02:23:17.83
IV.T1299.HNN. ML:1.8 0.0005200000000000001 0.3 AML other m 2017-01-21T02:23:17.97
IV.T1299.EHE. ML:2.0 0.000722 0.72 AML other m 2017-01-21T02:23:19.85
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