Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 16-07-2021 and time 09:30:39 (UTC) in region 2 km W Norcia (PG)

A magnitude ML 1.9 earthquake occured in region: 2 km W Norcia (PG), on

  • 16-07-2021 09:30:39 (UTC)
  • 16-07-2021 11:30:39 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7880, 13.0730 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 2 4957 4957
Cascia PG 9 3217 8174
Preci PG 11 724 8898
Cerreto di Spoleto PG 13 1075 9973
Castelsantangelo sul Nera MC 14 281 10254
Poggiodomo PG 14 117 10371
Visso MC 16 1107 11478
Sellano PG 16 1079 12557
Vallo di Nera PG 17 364 12921
Accumoli RI 18 667 13588
Monteleone di Spoleto PG 18 599 14187
Ussita MC 18 444 14631
Arquata del Tronto AP 18 1178 15809

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km SE of Foligno (57155 inhabitants)
43 Km NE of Terni (111501 inhabitants)
54 Km W of Teramo (54892 inhabitants)
55 Km NW of L'Aquila (69753 inhabitants)
66 Km SE of Perugia (166134 inhabitants)
89 Km E of Viterbo (67173 inhabitants)
92 Km NE of Guidonia Montecelio (88673 inhabitants)
93 Km W of Montesilvano (53738 inhabitants)
94 Km N of Tivoli (56533 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
Bulletin
Rev1000 		ML 1.9 2021-07-16
09:30:39		 42.7878 13.073 10 2021-12-29
11:12:19		 Bollettino Sismico Italiano INGV 93874621
Reviewed
Rev100 		ML 2.0 2021-07-16
09:30:40		 42.7912 13.0723 11 2021-07-16
09:38:12		 Sala Sismica INGV-Roma 92820331
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-07-16 09:30:39 ± 0.04
Latitude 42.7878 ± 0.0018
Longitude 13.0730 ± 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 93874621

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 254
Semi-minor axis of confidence ellipse (meter) 113
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 87
Circular confidence region, given by single value of horizontal uncertainty (meter) 250.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 40
Number of associated phases, regardless of their use for origin computation 70
Number of defining phases 68
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.76173
Number of stations at which the event was observed 37
Number of stations from which data was used for origin computation 35
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.2
Num. used stations 41
Type of magnitude ML
Reference to an origin 92820331
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-07-16 09:38:12

ML:1.9

Field Value
Value 1.9
Uncertainty 0.3
Num. used stations 49
Type of magnitude ML
Reference to an origin 93874621
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-11-16 12:46:54
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.TOLF.HHZ. 2021-07-16T09:31:15.38 3.0 undecidable manual S -0.57 0
IV.CRTC.HHZ. 2021-07-16T09:31:13.62 3.0 undecidable manual S -0.11 0
IV.CING.HHZ. 2021-07-16T09:31:01.11 0.6 undecidable manual S 9 65.9895 50 0.85 36
IV.FOSV.EHZ. 2021-07-16T09:30:59.55 0.6 undecidable manual S 336 61.6938 50 0.44 42
IV.EL6.EHZ. 2021-07-16T09:30:59.12 0.3 undecidable manual S 2 60.0954 50 0.42 63
IV.ATCC.EHZ. 2021-07-16T09:30:58.24 0.6 undecidable manual S 322 56.3991 50 0.54 41
IV.FIAM.HHZ. 2021-07-16T09:30:58.23 0.6 undecidable manual S 176 57.7977 50 0.15 45
IV.SAP2.EHE. 2021-07-16T09:30:55.09 0.3 undecidable manual S 38 43.3233 50 0.88 55
IV.MDAR.HNN. 2021-07-16T09:30:55.02 0.3 undecidable manual S 7 45.2214 50 0.28 67
IV.ASSB.HHZ. 2021-07-16T09:30:54.08 0.6 undecidable manual S 310 43.9227 50 -0.31 45
IV.TERO.HHZ. 2021-07-16T09:30:54.99 0.6 undecidable manual S 113 47.0196 50 -0.21 45
IV.T0110.HHZ. 2021-07-16T09:30:54.73 0.3 undecidable manual P 137 84.5487 50 0.18 64
IV.CESX.HHZ. 2021-07-16T09:30:54.68 0.6 undecidable manual S 244 44.3223 50 0.19 46
IV.SEF1.HNN. 2021-07-16T09:30:53.77 0.3 undecidable manual S 346 41.1255 50 0.14 70
IV.GUMA.HHZ. 2021-07-16T09:30:53.06 0.6 undecidable manual S 35 37.2294 50 0.48 44
IV.MOMA.HHZ. 2021-07-16T09:30:53.76 0.6 undecidable manual S 273 40.9257 50 0.17 46
IT.GNU.HGE. 2021-07-16T09:30:53.90 0.3 undecidable manual S 273 40.9257 50 0.31 67
IV.PF6.EHN. 2021-07-16T09:30:53.02 0.6 undecidable manual S 14 40.0266 50 -0.33 45
IV.MF5.EHZ. 2021-07-16T09:30:53.51 0.6 undecidable manual S 55 38.4282 50 0.59 42
IV.CAMP.HHZ. 2021-07-16T09:30:52.94 0.6 undecidable manual S 135 39.1275 50 -0.17 46
IV.MURB.HHZ. 2021-07-16T09:30:52.23 0.3 undecidable manual P 320 68.9754 50 0.08 67
IV.MML1.EHZ. 2021-07-16T09:30:52.33 0.6 undecidable manual S 347 37.0296 50 -0.22 46
IV.RM33.EHZ. 2021-07-16T09:30:51.44 0.6 undecidable manual S 159 33.0447 50 -0.03 48
IV.CSP1.EHZ. 2021-07-16T09:30:51.77 0.6 undecidable manual S 18 35.3424 50 -0.33 45
IV.FOSV.EHZ. 2021-07-16T09:30:51.02 0.3 undecidable manual P 336 61.6938 50 0 69
IV.CING.HHZ. 2021-07-16T09:30:51.66 0.3 undecidable manual P 9 65.9895 50 -0.02 68
IV.ARRO.EHZ. 2021-07-16T09:30:51.59 0.6 undecidable manual S 227 34.1436 50 -0.17 47
IV.EL6.EHZ. 2021-07-16T09:30:50.55 0.1 undecidable manual P 2 60.0954 50 -0.23 88
IV.ATCC.EHZ. 2021-07-16T09:30:50.13 0.1 undecidable manual P 322 56.3991 50 -0.08 92
IV.FIAM.HHZ. 2021-07-16T09:30:50.49 0.3 undecidable manual P 176 57.7977 50 0.06 69
IV.CESI.HHZ. 2021-07-16T09:30:49.60 0.6 undecidable manual S 330 27.6501 50 -0.44 45
IV.T1299.HNZ. 2021-07-16T09:30:49.56 0.6 undecidable manual S 135 24.1536 113 0.53 44
IV.FDMO.HHZ. 2021-07-16T09:30:49.41 0.6 undecidable manual S 2 27.6501 50 -0.61 42
IV.SMA1.EHZ. 2021-07-16T09:30:49.88 0.6 undecidable manual S 129 27.6501 50 -0.14 48
IV.MTRA.EHZ. 2021-07-16T09:30:49.29 0.6 undecidable manual S 97 26.5512 50 -0.46 45
IT.GNU.HGE. 2021-07-16T09:30:48.07 0.3 undecidable manual P 273 40.9257 50 0.24 68
IV.ASSB.HHZ. 2021-07-16T09:30:48.17 0.1 undecidable manual P 310 43.9227 50 -0.12 93
IV.MDAR.HNN. 2021-07-16T09:30:48.86 0.3 undecidable manual P 7 45.2214 50 0.36 66
IV.CESX.HHZ. 2021-07-16T09:30:48.18 0.1 positive manual P 244 44.3223 50 -0.17 92
IV.MMO1.EHZ. 2021-07-16T09:30:48.67 0.6 undecidable manual S 59 24.0537 113 -0.35 46
IV.TERO.HHZ. 2021-07-16T09:30:48.60 0.1 undecidable manual P 113 47.0196 50 -0.16 92
IT.MTCL.HGZ. 2021-07-16T09:30:48.32 0.3 undecidable manual S 345 23.6541 113 -0.56 65
IV.SAP2.EHE. 2021-07-16T09:30:48.40 0.3 undecidable manual P 38 43.3233 50 0.21 69
IV.MF5.EHZ. 2021-07-16T09:30:47.66 0.1 positive manual P 55 38.4282 50 0.21 92
IV.PF6.EHN. 2021-07-16T09:30:47.36 0.1 undecidable manual P 14 40.0266 50 -0.33 89
IV.GAVE.EHZ. 2021-07-16T09:30:47.37 0.6 undecidable manual S 234 18.0708 119 0.24 47
IV.SEF1.HNN. 2021-07-16T09:30:47.70 0.3 undecidable manual P 346 41.1255 50 -0.15 70
IV.CAMP.HHZ. 2021-07-16T09:30:47.37 0.3 undecidable manual P 135 39.1275 50 -0.18 69
IV.FEMA.HNZ. 2021-07-16T09:30:47.39 0.3 undecidable manual S 354 19.4694 117 -0.17 72
IV.MML1.EHZ. 2021-07-16T09:30:47.07 0.1 undecidable manual P 347 37.0296 50 -0.16 93
IV.GUMA.HHZ. 2021-07-16T09:30:47.35 0.3 undecidable manual P 35 37.2294 50 0.1 71
IV.MOMA.HHZ. 2021-07-16T09:30:47.83 0.1 undecidable manual P 273 40.9257 50 -0.01 96
IV.LNSS.HHZ. 2021-07-16T09:30:47.88 0.6 undecidable manual S 187 20.6682 116 -0.07 49
IV.CSP1.EHZ. 2021-07-16T09:30:46.70 0.1 undecidable manual P 18 35.3424 50 -0.27 91
IV.ARRO.EHZ. 2021-07-16T09:30:46.64 0.3 undecidable manual P 227 34.1436 50 -0.14 71
IV.MC2.EHZ. 2021-07-16T09:30:46.93 0.6 undecidable manual S 34 16.6722 121 0.22 48
IV.RM33.EHZ. 2021-07-16T09:30:46.40 0.1 negative manual P 159 33.0447 50 -0.21 93
IV.SMA1.EHZ. 2021-07-16T09:30:45.73 0.1 undecidable manual P 129 27.6501 50 -0.04 97
IV.MTRA.EHZ. 2021-07-16T09:30:45.46 0.1 undecidable manual P 97 26.5512 50 -0.15 95
IV.T1299.HNZ. 2021-07-16T09:30:45.23 0.1 undecidable manual P 135 24.1536 113 0.03 98
IV.CESI.HHZ. 2021-07-16T09:30:45.61 0.3 undecidable manual P 330 27.6501 50 -0.18 71
IV.MMO1.EHZ. 2021-07-16T09:30:45.00 0.1 undecidable manual P 59 24.0537 113 -0.19 95
IV.FDMO.HHZ. 2021-07-16T09:30:45.49 0.1 undecidable manual P 2 27.6501 50 -0.28 92
IV.LNSS.HHZ. 2021-07-16T09:30:44.66 0.1 positive manual P 187 20.6682 116 0.08 98
IV.NRCA.HNZ. 2021-07-16T09:30:44.13 0.1 undecidable manual S 34 6.0939 149 0.08 100
IT.MTCL.HGZ. 2021-07-16T09:30:44.89 0.3 undecidable manual P 345 23.6541 113 -0.22 71
IV.GAVE.EHZ. 2021-07-16T09:30:44.29 0.1 positive manual P 234 18.0708 119 0.19 96
IV.MC2.EHZ. 2021-07-16T09:30:44.03 0.1 positive manual P 34 16.6722 121 0.17 97
IV.FEMA.HNZ. 2021-07-16T09:30:44.47 0.3 undecidable manual P 354 19.4694 117 0.12 73
IV.NRCA.HNZ. 2021-07-16T09:30:42.57 0.1 negative manual P 34 6.0939 149 0.25 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:2.3 0.0034774325 0.0832 AML other m 2021-07-16T09:30:44.28
IV.NRCA.HNN. ML:2.6 0.00703 0.1 AML other m 2021-07-16T09:30:44.26
IV.NRCA.HHN. ML:2.7 0.007605000000000001 0.1 AML other m 2021-07-16T09:30:44.26
IV.NRCA.HNE. ML:2.4 0.004065449499999999 0.1472 AML other m 2021-07-16T09:30:44.35
IV.GAVE.HNE. ML:2.2 0.0013037409 0.2432 AML other m 2021-07-16T09:30:47.59
IV.GAVE.EHE. ML:2.3 0.00154853145 0.2368 AML other m 2021-07-16T09:30:47.59
IV.GAVE.HNN. ML:1.9 0.0006568790499999999 0.2432 AML other m 2021-07-16T09:30:47.71
IV.GAVE.EHN. ML:2.4 0.002165 0.24 AML other m 2021-07-16T09:30:47.72
IV.LNSS.HHE. ML:2.1 0.0009291368 0.3392 AML other m 2021-07-16T09:30:48.35
IV.LNSS.HHN. ML:2.2 0.00110827995 0.3392 AML other m 2021-07-16T09:30:48.19
IV.LNSS.HNE. ML:2.2 0.0010059758000000002 0.32 AML other m 2021-07-16T09:30:48.36
IV.LNSS.HNN. ML:2.2 0.0010134468000000002 0.3904 AML other m 2021-07-16T09:30:48.20
IV.MTRA.EHE. ML:1.9 0.00044855255 0.256 AML other m 2021-07-16T09:30:49.56
IV.MTRA.HNE. ML:1.9 0.0004318462 0.2624 AML other m 2021-07-16T09:30:49.56
IV.MTRA.EHN. ML:2.0 0.00057019145 0.7424 AML other m 2021-07-16T09:30:49.78
IV.MTRA.HNN. ML:2.0 0.0004994542 0.2624 AML other m 2021-07-16T09:30:49.78
IV.FDMO.HHN. ML:1.7 0.0002702757 0.3776 AML other m 2021-07-16T09:30:49.79
IV.FDMO.HHE. ML:1.7 0.0002385845 0.3584 AML other m 2021-07-16T09:30:49.81
IV.CESI.HHN. ML:1.8 0.00032329375 0.3008 AML other m 2021-07-16T09:30:49.97
IV.CESI.HHE. ML:1.4 0.00012542595 0.6784 AML other m 2021-07-16T09:30:49.75
IV.SMA1.EHE. ML:1.9 0.00041082295000000003 0.256 AML other m 2021-07-16T09:30:50.60
IV.SMA1.EHN. ML:1.9 0.00042509935 0.256 AML other m 2021-07-16T09:30:50.95
IV.RM33.HNE. ML:1.7 0.00021357924999999999 0.5184 AML other m 2021-07-16T09:30:51.77
IV.ARRO.EHE. ML:1.7 0.00020343329999999998 0.2624 AML other m 2021-07-16T09:30:51.91
IV.ARRO.EHN. ML:1.5 0.0001460556 0.2816 AML other m 2021-07-16T09:30:51.95
IV.RM33.EHE. ML:1.7 0.00020557599999999998 0.2176 AML other m 2021-07-16T09:30:52.03
IV.CSP1.EHN. ML:2.0 0.00040450370000000004 0.3776 AML other m 2021-07-16T09:30:52.07
IV.MML1.EHE. ML:1.5 0.000131544015 0.3008 AML other m 2021-07-16T09:30:52.85
IV.MML1.EHN. ML:1.5 0.00012240075 0.3392 AML other m 2021-07-16T09:30:52.90
IV.MML1.HNE. ML:1.6 0.00013975594999999998 0.448 AML other m 2021-07-16T09:30:52.69
IV.GUMA.HNE. ML:2.1 0.00045658565 0.8896 AML other m 2021-07-16T09:30:54.04
IV.CAMP.HHN. ML:1.3 0.000064308765 0.4352 AML other m 2021-07-16T09:30:53.47
IV.CAMP.HHE. ML:1.4 0.000085965445 0.2816 AML other m 2021-07-16T09:30:53.77
IV.MF5.EHN. ML:1.8 0.0002059735 0.3456 AML other m 2021-07-16T09:30:54.11
IV.MOMA.HHN. ML:2.0 0.00034246710000000003 0.2816 AML other m 2021-07-16T09:30:54.14
IV.MOMA.HNN. ML:2.0 0.00032525115 0.2624 AML other m 2021-07-16T09:30:54.43
IV.GUMA.HHN. ML:2.1 0.0005044935 0.5376 AML other m 2021-07-16T09:30:54.07
IV.MF5.EHE. ML:2.0 0.00035099999999999997 0.38 AML other m 2021-07-16T09:30:54.41
IV.ASSB.HHE. ML:1.8 0.0001936452 0.4224 AML other m 2021-07-16T09:30:54.72
IV.MOMA.HHE. ML:2.4 0.0008595 0.22 AML other m 2021-07-16T09:30:54.75
IV.MOMA.HNE. ML:2.4 0.000807 0.2 AML other m 2021-07-16T09:30:54.86
IV.ASSB.HHN. ML:1.8 0.00018652905 0.3392 AML other m 2021-07-16T09:30:54.71
IV.FIAM.HHN. ML:1.4 0.000048459995 1.2992 AML other m 2021-07-16T09:30:58.99
IV.FIAM.HHE. ML:1.2 0.00003733335 0.64 AML other m 2021-07-16T09:30:58.84
IV.EL6.EHE. ML:1.8 0.00014672893 0.9216 AML other m 2021-07-16T09:30:59.80
IV.EL6.EHN. ML:1.9 0.000179 1.72 AML other m 2021-07-16T09:30:59.00
IV.FOSV.EHE. ML:1.2 0.000034483374999999994 0.3008 AML other m 2021-07-16T09:31:00.40
IV.CING.HHE. ML:1.5 0.00006203625 0.1792 AML other m 2021-07-16T09:31:01.74
IV.T0110.HHE. ML:1.6 0.000044834545 0.4608 AML other m 2021-07-16T09:31:06.19
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