Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 18-05-2020 and time 04:27:13 (Italy) in region 5 km E Norcia (PG)

A magnitude ML 1.7 earthquake occured in region: 5 km E Norcia (PG), on

  • 18-05-2020 02:27:13 (UTC)
  • 18-05-2020 04:27:13 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7780, 13.1560 at 9 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 5 4957 4957
Arquata del Tronto AP 12 1178 6135
Accumoli RI 12 667 6802
Castelsantangelo sul Nera MC 13 281 7083
Cascia PG 13 3217 10300
Preci PG 15 724 11024
Montegallo AP 16 523 11547
Cittareale RI 18 482 12029
Visso MC 18 1107 13136
Ussita MC 19 444 13580
Poggiodomo PG 19 117 13697
Montemonaco AP 20 604 14301
Amatrice RI 20 2657 16958

Municipalities with at least 50000 inhabitants

An earthquake occurred to
42 Km E of Foligno (57155 inhabitants)
47 Km W of Teramo (54892 inhabitants)
48 Km NE of Terni (111501 inhabitants)
51 Km NW of L'Aquila (69753 inhabitants)
72 Km SE of Perugia (166134 inhabitants)
86 Km W of Montesilvano (53738 inhabitants)
93 Km NE of Guidonia Montecelio (88673 inhabitants)
93 Km W of Pescara (121014 inhabitants)
95 Km E of Viterbo (67173 inhabitants)
95 Km NE of Tivoli (56533 inhabitants)
96 Km NW of Chieti (51815 inhabitants)
98 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 1.7 2020-05-18
02:27:13		 42.7777 13.1562 9 2020-11-19
12:36:51		 Bollettino Sismico Italiano INGV 80829881
Reviewed
Rev100 		ML 1.7 2020-05-18
02:27:13		 42.7753 13.1522 9 2020-05-18
02:34:28		 Sala Sismica INGV-Roma 79254361
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-05-18 02:27:13 ± 0.05
Latitude 42.7777 ± 0.0027
Longitude 13.1562 ± 0.0037
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 80829881

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 315
Semi-minor axis of confidence ellipse (meter) 132
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 77
Circular confidence region, given by single value of horizontal uncertainty (meter) 310.0
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 57
Number of defining phases 56
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.00994
Number of stations at which the event was observed 33
Number of stations from which data was used for origin computation 32
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 56
Type of magnitude ML
Reference to an origin 79254361
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-05-18 02:34:28

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 56
Type of magnitude ML
Reference to an origin 80829881
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-07-06 14:25:16
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ROSPO.HHZ. 2020-05-18T02:28:01.66 3.0 undecidable manual S 2.72 0
IV.CRTC.HHZ. 2020-05-18T02:27:33.52 0.1 undecidable manual P 349 112.0989 50 0.92 63
IV.ATCC.EHZ. 2020-05-18T02:27:33.56 0.1 undecidable manual S 317 61.5939 50 0.55 81
IV.SNTG.HHZ. 2020-05-18T02:27:31.42 0.3 undecidable manual S 342 55.7997 50 -0.02 70
IV.MPAG.EHZ. 2020-05-18T02:27:31.18 0.1 undecidable manual P 341 99.7224 50 0.48 78
IV.FIAM.HHZ. 2020-05-18T02:27:31.74 0.1 undecidable manual S 183 56.5989 50 0.07 92
IV.MOMA.HHZ. 2020-05-18T02:27:29.79 0.3 undecidable manual S 274 47.8188 50 0.48 64
IV.CESX.HHZ. 2020-05-18T02:27:29.95 0.3 undecidable manual S 248 50.1165 50 0.03 70
IV.SAP2.EHZ. 2020-05-18T02:27:28.16 0.1 undecidable manual S 29 40.5261 50 0.79 77
IV.ARVD.HHZ. 2020-05-18T02:27:27.87 0.1 undecidable manual P 348 81.7515 50 -0.06 88
IV.ARRO.EHZ. 2020-05-18T02:27:26.93 0.1 undecidable manual S 235 38.7279 50 0.04 96
IV.TERO.HHZ. 2020-05-18T02:27:26.71 0.1 undecidable manual S 115 40.3263 50 -0.62 83
IV.FAGN.HHZ. 2020-05-18T02:27:26.11 0.3 undecidable manual P 148 66.6777 50 0.51 62
IV.GUMA.HHZ. 2020-05-18T02:27:26.07 0.1 undecidable manual S 25 34.8429 50 0.22 93
IV.CSP1.EHZ. 2020-05-18T02:27:25.62 0.1 undecidable manual S 6 35.0427 50 -0.3 91
IV.MF5.EHZ. 2020-05-18T02:27:25.95 0.1 undecidable manual S 47 33.9438 50 0.33 91
IV.CESI.HHZ. 2020-05-18T02:27:24.97 0.1 undecidable manual S 321 32.4453 50 -0.25 92
IV.ATCC.EHZ. 2020-05-18T02:27:24.82 0.1 undecidable manual P 317 61.5939 50 0 92
IV.RM33.EHZ. 2020-05-18T02:27:24.60 0.6 undecidable manual S 171 30.1476 107 0.03 49
IV.CAMP.HHZ. 2020-05-18T02:27:24.99 0.1 undecidable manual S 142 33.8439 50 -0.6 84
IV.SNTG.HHZ. 2020-05-18T02:27:23.64 0.1 undecidable manual P 342 55.7997 50 -0.28 88
IT.MTCL.HGN. 2020-05-18T02:27:23.18 0.1 undecidable manual S 332 27.1506 108 -0.39 91
IV.CESX.HHZ. 2020-05-18T02:27:23.04 0.3 undecidable manual P 248 50.1165 50 0 71
IV.FIAM.HHZ. 2020-05-18T02:27:23.78 0.3 undecidable manual P 183 56.5989 50 -0.27 66
IV.FDMO.HHZ. 2020-05-18T02:27:23.76 0.1 undecidable manual S 349 29.2485 107 -0.5 88
IV.MNTT.EHZ. 2020-05-18T02:27:23.25 0.1 undecidable manual P 48 47.619 50 0.58 83
IV.ASSB.HHZ. 2020-05-18T02:27:22.84 0.1 undecidable manual P 306 50.0166 50 -0.19 91
IV.MOMA.HHZ. 2020-05-18T02:27:22.80 0.1 undecidable manual P 274 47.8188 50 0.11 93
IV.SAP2.EHZ. 2020-05-18T02:27:21.79 0.1 undecidable manual P 29 40.5261 50 0.22 92
IV.T1299.HNZ. 2020-05-18T02:27:21.38 0.1 undecidable manual S 147 18.9699 115 0.46 90
IV.SMA1.EHZ. 2020-05-18T02:27:21.76 0.1 undecidable manual S 138 21.867 112 -0.1 97
IV.ARRO.EHZ. 2020-05-18T02:27:21.10 0.1 positive manual P 235 38.7279 50 -0.19 93
IV.MML1.HNE. 2020-05-18T02:27:21.25 0.1 undecidable manual P 338 40.1265 50 -0.26 91
IV.FEMA.HNN. 2020-05-18T02:27:21.76 0.1 undecidable manual S 337 22.2555 112 -0.2 95
IV.TERO.HHZ. 2020-05-18T02:27:21.31 0.1 undecidable manual P 115 40.3263 50 -0.23 92
IV.MTRA.EHZ. 2020-05-18T02:27:21.12 0.1 undecidable manual S 97 19.7691 115 -0.04 99
IV.LNSS.HHZ. 2020-05-18T02:27:21.82 0.1 undecidable manual S 206 21.5673 113 0.07 98
IV.PF6.EHN. 2020-05-18T02:27:21.12 0.1 undecidable manual P 4 40.1265 50 -0.38 89
IV.MF5.EHZ. 2020-05-18T02:27:20.60 0.1 positive manual P 47 33.9438 50 0.04 96
IV.CAMP.HHZ. 2020-05-18T02:27:20.05 0.1 undecidable manual P 142 33.8439 50 -0.49 88
IV.GUMA.HHZ. 2020-05-18T02:27:20.67 0.1 positive manual P 25 34.8429 50 -0.02 97
IV.CESI.HHZ. 2020-05-18T02:27:20.17 0.1 undecidable manual P 321 32.4453 50 -0.16 94
IV.MMO1.EHZ. 2020-05-18T02:27:20.97 0.1 undecidable manual S 46 19.3695 115 -0.08 98
IV.CSP1.EHZ. 2020-05-18T02:27:20.40 0.1 positive manual P 6 35.0427 50 -0.33 91
IV.RM33.EHZ. 2020-05-18T02:27:19.85 0.1 undecidable manual P 171 30.1476 107 -0.1 96
IV.MC2.EHZ. 2020-05-18T02:27:19.81 0.1 undecidable manual S 10 15.0738 121 0.07 99
IT.MTCL.HGN. 2020-05-18T02:27:19.21 0.1 undecidable manual P 332 27.1506 108 -0.16 95
IV.FDMO.HHZ. 2020-05-18T02:27:19.45 0.1 positive manual P 349 29.2485 107 -0.32 92
IV.FEMA.HNN. 2020-05-18T02:27:18.49 0.1 undecidable manual P 337 22.2555 112 0.05 98
IV.MTRA.EHZ. 2020-05-18T02:27:18.03 0.1 negative manual P 97 19.7691 115 0.05 99
IV.LNSS.HHZ. 2020-05-18T02:27:18.49 0.1 positive manual P 206 21.5673 113 0.17 96
IV.T1299.HNZ. 2020-05-18T02:27:18.16 0.1 positive manual P 147 18.9699 115 0.32 93
IV.SMA1.EHZ. 2020-05-18T02:27:18.33 0.1 undecidable manual P 138 21.867 112 -0.06 98
IV.MMO1.EHZ. 2020-05-18T02:27:17.90 0.1 positive manual P 46 19.3695 115 -0.02 99
IV.NRCA.HNZ. 2020-05-18T02:27:17.70 0.1 undecidable manual S 331 7.0929 142 0.08 100
IV.MC2.EHZ. 2020-05-18T02:27:17.45 0.1 positive manual P 10 15.0738 121 0.29 95
IV.NRCA.HNZ. 2020-05-18T02:27:16.24 0.1 negative manual P 331 7.0929 142 0.3 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:2.7 0.00783 0.12 AML other m 2020-05-18T02:27:17.75
IV.NRCA.HNN. ML:2.6 0.00669 0.14 AML other m 2020-05-18T02:27:17.82
IV.NRCA.HHE. ML:2.6 0.00723 0.16 AML other m 2020-05-18T02:27:17.88
IV.NRCA.HNE. ML:2.6 0.006955 0.16 AML other m 2020-05-18T02:27:17.88
IV.MTRA.EHE. ML:2.0 0.0008914999999999999 0.34 AML other m 2020-05-18T02:27:21.25
IV.MTRA.HNE. ML:2.0 0.000887 0.34 AML other m 2020-05-18T02:27:21.25
IV.MTRA.EHN. ML:2.0 0.0007685 0.22 AML other m 2020-05-18T02:27:21.52
IV.MTRA.HNN. ML:2.0 0.000742 0.2 AML other m 2020-05-18T02:27:21.51
IV.LNSS.HNE. ML:2.3 0.0012999999999999997 0.72 AML other m 2020-05-18T02:27:22.28
IV.LNSS.HHE. ML:2.3 0.0013199999999999998 0.2 AML other m 2020-05-18T02:27:22.28
IV.LNSS.HNN. ML:2.2 0.0012330000000000002 0.28 AML other m 2020-05-18T02:27:22.68
IV.LNSS.HHN. ML:2.3 0.0014399999999999999 0.28 AML other m 2020-05-18T02:27:22.68
IV.FDMO.HHN. ML:1.5 0.00017299999999999998 0.28 AML other m 2020-05-18T02:27:24.15
IV.SMA1.EHE. ML:1.7 0.000334 0.56 AML other m 2020-05-18T02:27:24.45
IV.RM33.EHN. ML:1.6 0.00019 0.3 AML other m 2020-05-18T02:27:25.04
IV.CESI.HHE. ML:1.8 0.0002685 0.42 AML other m 2020-05-18T02:27:25.41
IV.CESI.HHN. ML:1.8 0.0002595 0.24 AML other m 2020-05-18T02:27:25.42
IV.CAMP.HHE. ML:1.4 0.00011895 0.24 AML other m 2020-05-18T02:27:25.32
IV.FDMO.HHE. ML:1.6 0.000188 0.2 AML other m 2020-05-18T02:27:25.35
IV.RM33.EHE. ML:1.7 0.000247 0.56 AML other m 2020-05-18T02:27:25.63
IV.SMA1.EHN. ML:1.7 0.000364 0.42 AML other m 2020-05-18T02:27:25.68
IV.CAMP.HHN. ML:1.2 0.00006765 1.7 AML other m 2020-05-18T02:27:26.08
IV.MF5.EHE. ML:1.8 0.000241 0.3 AML other m 2020-05-18T02:27:26.80
IV.CSP1.EHE. ML:1.8 0.0002565 0.58 AML other m 2020-05-18T02:27:26.83
IV.GUMA.HHE. ML:2.0 0.0004275 1.86 AML other m 2020-05-18T02:27:27.97
IV.CSP1.EHN. ML:1.9 0.000323 1.64 AML other m 2020-05-18T02:27:27.05
IV.GUMA.HNN. ML:2.1 0.000531 1.46 AML other m 2020-05-18T02:27:27.17
IV.MF5.EHN. ML:1.7 0.000202 0.26 AML other m 2020-05-18T02:27:27.14
IV.GUMA.HNE. ML:2.1 0.00049 1.32 AML other m 2020-05-18T02:27:27.96
IV.GUMA.HHN. ML:2.0 0.00045699999999999994 1.24 AML other m 2020-05-18T02:27:27.92
IV.ARRO.EHN. ML:1.5 0.00011499999999999999 0.12 AML other m 2020-05-18T02:27:28.29
IV.SAP2.EHN. ML:2.6 0.00123 0.2 AML other m 2020-05-18T02:27:28.70
IV.ARRO.EHE. ML:1.4 0.00010065000000000001 1.54 AML other m 2020-05-18T02:27:28.09
IV.TERO.HHE. ML:1.3 0.0000731 1.06 AML other m 2020-05-18T02:27:28.40
IV.TERO.HHN. ML:1.4 0.00008405 0.38 AML other m 2020-05-18T02:27:29.42
IV.MOMA.HHE. ML:1.7 0.000132 0.16 AML other m 2020-05-18T02:27:31.00
IV.MOMA.HNE. ML:1.8 0.00017199999999999998 1.58 AML other m 2020-05-18T02:27:31.81
IV.MOMA.HHN. ML:1.6 0.00011619999999999999 0.18 AML other m 2020-05-18T02:27:31.50
IV.SAP2.EHE. ML:1.8 0.0001985 0.22 AML other m 2020-05-18T02:27:31.75
IV.CESX.HHN. ML:1.4 0.0000637 0.56 AML other m 2020-05-18T02:27:31.78
IV.CESX.HHE. ML:1.4 0.0000617 1.38 AML other m 2020-05-18T02:27:32.21
IV.ASSB.HHN. ML:1.4 0.0000696 0.16 AML other m 2020-05-18T02:27:32.31
IV.FIAM.HHE. ML:1.0 0.00002605 1.12 AML other m 2020-05-18T02:27:32.97
IV.SNTG.HHE. ML:1.3 0.000048049999999999996 1 AML other m 2020-05-18T02:27:33.01
IV.ASSB.HHE. ML:1.4 0.000064 0.12 AML other m 2020-05-18T02:27:33.02
IV.FIAM.HHN. ML:1.1 0.0000292 1.8 AML other m 2020-05-18T02:27:33.99
IV.SNTG.HHN. ML:1.3 0.000047850000000000004 0.16 AML other m 2020-05-18T02:27:33.53
IV.ATCC.EHN. ML:1.5 0.0000603 0.66 AML other m 2020-05-18T02:27:33.97
IV.MNTT.EHE. ML:2.0 0.0002475 0.6 AML other m 2020-05-18T02:27:34.58
IV.MNTT.EHN. ML:1.9 0.0002395 0.34 AML other m 2020-05-18T02:27:35.17
IV.ATCC.EHE. ML:1.4 0.000044999999999999996 0.76 AML other m 2020-05-18T02:27:35.02
IV.FAGN.HHN. ML:1.6 0.00006950000000000001 1.36 AML other m 2020-05-18T02:27:39.74
IV.MOMA.HNN. ML:2.1 0.0003625 0.62 AML other m 2020-05-18T02:27:39.44
IV.FAGN.HHE. ML:1.6 0.00006945 0.36 AML other m 2020-05-18T02:27:40.55
IV.ARVD.HHN. ML:1.2 0.00001815 0.9 AML other m 2020-05-18T02:27:43.49
IV.ARVD.HHE. ML:1.2 0.0000204 1.36 AML other m 2020-05-18T02:27:43.17
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