Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 18-05-2020 and time 02:07:45 (UTC) in region 6 km E Norcia (PG)

A magnitude ML 1.7 earthquake occured in region: 6 km E Norcia (PG), on

  • 18-05-2020 02:07:45 (UTC)
  • 18-05-2020 04:07:45 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7760, 13.1600 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 6 4957 4957
Arquata del Tronto AP 11 1178 6135
Accumoli RI 12 667 6802
Castelsantangelo sul Nera MC 13 281 7083
Cascia PG 14 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
Amatrice RI 19 2657 16237
Montemonaco AP 20 604 16841
Poggiodomo PG 20 117 16958

Municipalities with at least 50000 inhabitants

An earthquake occurred to
42 Km E of Foligno (57155 inhabitants)
46 Km W of Teramo (54892 inhabitants)
48 Km NE of Terni (111501 inhabitants)
51 Km NW of L'Aquila (69753 inhabitants)
73 Km SE of Perugia (166134 inhabitants)
86 Km W of Montesilvano (53738 inhabitants)
93 Km W of Pescara (121014 inhabitants)
93 Km NE of Guidonia Montecelio (88673 inhabitants)
95 Km E of Viterbo (67173 inhabitants)
95 Km NE of Tivoli (56533 inhabitants)
95 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
02:07:45		 42.7763 13.1595 9 2020-11-19
12:36:51		 Bollettino Sismico Italiano INGV 80819761
Reviewed
Rev100 		ML 1.7 2020-05-18
02:07:45		 42.7718 13.167 9 2020-05-18
02:15:46		 Sala Sismica INGV-Roma 79252481
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-05-18 02:07:45 ± 0.05
Latitude 42.7763 ± 0.0027
Longitude 13.1595 ± 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 80819761

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 317
Semi-minor axis of confidence ellipse (meter) 172
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 89
Circular confidence region, given by single value of horizontal uncertainty (meter) 320.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 48
Number of associated phases, regardless of their use for origin computation 58
Number of defining phases 56
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.28
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.73834
Number of stations at which the event was observed 35
Number of stations from which data was used for origin computation 34
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 60
Type of magnitude ML
Reference to an origin 80819761
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-07-06 06:29:45

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 60
Type of magnitude ML
Reference to an origin 79252481
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-05-18 02:15:46
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.EL6.EHZ. 2020-05-18T02:08:05.01 0.3 undecidable manual S 356 61.494 50 0.73 57
IV.ATCC.EHZ. 2020-05-18T02:08:05.06 0.3 undecidable manual S 317 61.8936 50 0.68 58
IV.FIAM.HHZ. 2020-05-18T02:08:03.10 0.3 undecidable manual S 184 56.499 50 0.17 68
IV.SNTG.HHZ. 2020-05-18T02:08:02.83 0.3 undecidable manual S 342 55.9995 50 0.03 70
IT.GNU.HGE. 2020-05-18T02:08:01.72 3.0 undecidable manual S 0.79 0
IV.MOMA.HHZ. 2020-05-18T02:08:01.18 0.3 undecidable manual S 274 48.1185 50 0.49 64
IV.CESX.HHZ. 2020-05-18T02:08:01.53 0.3 undecidable manual S 248 50.3163 50 0.26 67
IV.T0110.HHZ. 2020-05-18T02:07:59.09 0.1 undecidable manual P 140 78.8655 50 0.27 85
IV.SAP2.EHZ. 2020-05-18T02:07:59.48 0.3 undecidable manual S 29 40.5261 50 0.81 57
IV.ARVD.HHZ. 2020-05-18T02:07:59.20 0.3 undecidable manual P 348 81.9513 50 -0.1 66
IV.ARRO.EHZ. 2020-05-18T02:07:58.36 0.1 undecidable manual S 236 38.8278 50 0.14 94
IV.GUMA.HHZ. 2020-05-18T02:07:57.48 0.1 undecidable manual S 24 34.8429 50 0.33 91
IV.VCEL.EHZ. 2020-05-18T02:07:57.84 0.3 undecidable manual P 127 69.8745 50 0.41 63
IV.CSP1.EHZ. 2020-05-18T02:07:57.01 0.1 undecidable manual S 6 35.2425 50 -0.24 93
IV.MF5.EHZ. 2020-05-18T02:07:57.25 0.1 undecidable manual S 46 33.8439 50 0.36 90
IV.CAMP.HHZ. 2020-05-18T02:07:56.40 0.3 undecidable manual S 143 33.5442 50 -0.41 67
IV.CESI.HHZ. 2020-05-18T02:07:56.28 0.1 undecidable manual S 321 32.745 50 -0.31 91
IV.ATCC.EHZ. 2020-05-18T02:07:56.19 0.1 undecidable manual P 317 61.8936 50 -0.01 92
IV.FAGN.HHZ. 2020-05-18T02:07:56.59 0.3 undecidable manual P 148 66.378 50 -0.31 65
IV.FIAM.HHZ. 2020-05-18T02:07:55.05 0.3 undecidable manual P 184 56.499 50 -0.32 66
IV.EL6.EHZ. 2020-05-18T02:07:55.91 0.3 undecidable manual P 356 61.494 50 -0.23 66
IV.FDMO.HHZ. 2020-05-18T02:07:55.17 0.1 undecidable manual S 349 29.4483 50 -0.55 87
IV.RM33.EHZ. 2020-05-18T02:07:55.68 0.1 undecidable manual S 171 29.9478 50 -0.18 95
IV.SNTG.HHZ. 2020-05-18T02:07:55.10 0.1 undecidable manual P 342 55.9995 50 -0.19 90
IV.CESX.HHZ. 2020-05-18T02:07:54.20 0.3 undecidable manual P 248 50.3163 50 -0.21 68
IV.ASSB.HHZ. 2020-05-18T02:07:54.29 0.3 undecidable manual P 306 50.3163 50 -0.12 69
IV.MNTP.HNZ. 2020-05-18T02:07:54.43 0.1 undecidable manual P 32 47.3193 50 0.48 86
IV.MNTT.EHZ. 2020-05-18T02:07:54.51 0.3 undecidable manual P 48 47.5191 50 0.52 64
IT.GNU.HGE. 2020-05-18T02:07:54.44 3.0 undecidable manual P 0.2 0
IV.MOMA.HHZ. 2020-05-18T02:07:54.19 0.1 undecidable manual P 274 48.1185 50 0.12 93
IV.SMA1.EHZ. 2020-05-18T02:07:53.13 0.6 undecidable manual S 138 21.5673 114 -0.08 49
IV.LNSS.HHZ. 2020-05-18T02:07:53.32 0.1 undecidable manual S 207 21.5673 114 0.13 97
IV.SAP2.EHZ. 2020-05-18T02:07:53.18 0.1 undecidable manual P 29 40.5261 50 0.28 91
IV.ARRO.EHZ. 2020-05-18T02:07:52.50 0.1 undecidable manual P 236 38.8278 50 -0.15 94
IV.PF6.EHN. 2020-05-18T02:07:52.46 0.3 undecidable manual P 4 40.2264 50 -0.4 66
IV.GUMA.HHZ. 2020-05-18T02:07:52.01 0.1 undecidable manual P 24 34.8429 50 -0.02 97
IV.T1299.HNN. 2020-05-18T02:07:52.73 0.1 undecidable manual S 148 18.6702 117 0.44 91
IV.MMO1.EHZ. 2020-05-18T02:07:52.22 0.1 undecidable manual S 45 19.2696 116 -0.26 95
IV.TERO.HHZ. 2020-05-18T02:07:52.50 0.1 undecidable manual P 115 40.0266 50 -0.33 90
IV.MML1.HNE. 2020-05-18T02:07:52.60 0.1 positive manual P 338 40.4262 50 -0.29 91
IV.MTRA.EHZ. 2020-05-18T02:07:52.16 0.1 undecidable manual S 96 19.4694 116 -0.36 93
IV.CSP1.EHZ. 2020-05-18T02:07:51.76 0.1 positive manual P 6 35.2425 50 -0.32 91
IV.RM33.EHZ. 2020-05-18T02:07:51.00 0.1 positive manual P 171 29.9478 50 -0.28 93
IV.MF5.EHZ. 2020-05-18T02:07:51.96 0.1 positive manual P 46 33.8439 50 0.08 96
IV.MC2.EHZ. 2020-05-18T02:07:51.38 0.1 undecidable manual S 9 15.1737 122 0.15 98
IV.CAMP.HHZ. 2020-05-18T02:07:51.52 0.1 undecidable manual P 143 33.5442 50 -0.31 91
IV.CESI.HHZ. 2020-05-18T02:07:51.53 0.1 positive manual P 321 32.745 50 -0.18 94
IV.FDMO.HHZ. 2020-05-18T02:07:50.83 0.1 positive manual P 349 29.4483 50 -0.37 91
IT.MTCL.HGZ. 2020-05-18T02:07:50.59 0.1 undecidable manual P 332 27.4503 109 -0.25 94
IV.T1299.HNN. 2020-05-18T02:07:49.55 0.1 positive manual P 148 18.6702 117 0.33 93
IV.MMO1.EHZ. 2020-05-18T02:07:49.28 0.1 positive manual P 45 19.2696 116 -0.05 99
IV.NRCA.HNZ. 2020-05-18T02:07:49.08 0.1 undecidable manual S 330 7.3815 142 -0.1 100
IV.FEMA.HNE. 2020-05-18T02:07:49.82 0.1 undecidable manual P 337 22.4553 113 -0.09 98
IV.MTRA.EHZ. 2020-05-18T02:07:49.31 0.1 undecidable manual P 96 19.4694 116 -0.05 99
IV.SMA1.EHZ. 2020-05-18T02:07:49.78 0.1 undecidable manual P 138 21.5673 114 0.03 99
IV.LNSS.HHZ. 2020-05-18T02:07:49.90 0.1 positive manual P 207 21.5673 114 0.16 96
IV.MC2.EHZ. 2020-05-18T02:07:48.84 0.1 positive manual P 9 15.1737 122 0.23 96
IV.NRCA.HNZ. 2020-05-18T02:07:47.64 0.1 negative manual P 330 7.3815 142 0.22 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:2.8 0.009609999999999999 0.1 AML other m 2020-05-18T02:07:49.17
IV.NRCA.HNN. ML:2.7 0.008164999999999999 0.12 AML other m 2020-05-18T02:07:49.17
IV.NRCA.HHE. ML:2.8 0.01085 0.16 AML other m 2020-05-18T02:07:49.21
IV.NRCA.HNE. ML:2.8 0.010399999999999998 0.16 AML other m 2020-05-18T02:07:49.22
IV.MTRA.EHE. ML:2.1 0.000929 0.34 AML other m 2020-05-18T02:07:52.62
IV.MTRA.EHN. ML:2.0 0.0007715 0.22 AML other m 2020-05-18T02:07:52.78
IV.MTRA.HNN. ML:2.0 0.0007305 0.2 AML other m 2020-05-18T02:07:52.88
IV.MTRA.HNE. ML:2.0 0.0008814999999999999 0.2 AML other m 2020-05-18T02:07:52.88
IV.LNSS.HHE. ML:2.3 0.00125 1.3 AML other m 2020-05-18T02:07:53.68
IV.LNSS.HHN. ML:2.2 0.0012150000000000002 0.16 AML other m 2020-05-18T02:07:54.07
IV.FDMO.HHN. ML:1.6 0.0002185 0.82 AML other m 2020-05-18T02:07:55.56
IV.SMA1.EHE. ML:1.8 0.000481 1.42 AML other m 2020-05-18T02:07:55.82
IV.RM33.EHN. ML:1.6 0.000209 0.38 AML other m 2020-05-18T02:07:56.43
IV.RM33.HNN. ML:1.7 0.0002405 1.02 AML other m 2020-05-18T02:07:56.43
IV.CAMP.HHE. ML:1.6 0.0001725 0.26 AML other m 2020-05-18T02:07:56.67
IV.CESI.HHE. ML:1.8 0.0002985 1.54 AML other m 2020-05-18T02:07:56.81
IV.CESI.HHN. ML:1.8 0.0002935 0.3 AML other m 2020-05-18T02:07:56.82
IV.SMA1.EHN. ML:1.9 0.0005175000000000001 0.42 AML other m 2020-05-18T02:07:57.06
IV.FDMO.HHE. ML:1.6 0.00020649999999999998 0.98 AML other m 2020-05-18T02:07:57.27
IV.RM33.HNE. ML:1.8 0.000311 0.14 AML other m 2020-05-18T02:07:57.29
IV.RM33.EHE. ML:1.8 0.00029800000000000003 0.14 AML other m 2020-05-18T02:07:57.37
IV.CAMP.HHN. ML:1.4 0.00009685 0.66 AML other m 2020-05-18T02:07:57.77
IV.MF5.EHE. ML:1.8 0.00023249999999999999 0.3 AML other m 2020-05-18T02:07:58.18
IV.CSP1.EHE. ML:1.7 0.0002035 1.42 AML other m 2020-05-18T02:07:58.23
IV.GUMA.HHE. ML:2.0 0.0004515 0.54 AML other m 2020-05-18T02:07:58.56
IV.CSP1.EHN. ML:1.9 0.0003125 0.36 AML other m 2020-05-18T02:07:58.45
IV.GUMA.HNN. ML:2.1 0.0005005 0.44 AML other m 2020-05-18T02:07:58.55
IV.TERO.HHN. ML:1.6 0.0001305 0.08 AML other m 2020-05-18T02:07:58.64
IV.GUMA.HHN. ML:2.0 0.000449 0.22 AML other m 2020-05-18T02:07:58.79
IV.MF5.EHN. ML:1.7 0.0001945 0.42 AML other m 2020-05-18T02:07:59.34
IV.ARRO.EHN. ML:1.5 0.0001205 0.14 AML other m 2020-05-18T02:07:59.69
IV.SAP2.EHN. ML:2.6 0.00126 1.34 AML other m 2020-05-18T02:08:00.89
IV.ARRO.EHE. ML:1.5 0.00011899999999999999 0.42 AML other m 2020-05-18T02:08:00.49
IV.TERO.HHE. ML:1.4 0.00008494999999999999 1.06 AML other m 2020-05-18T02:08:00.70
IV.GUMA.HNE. ML:2.0 0.000435 0.4 AML other m 2020-05-18T02:08:00.74
IV.SAP2.EHE. ML:1.8 0.000224 1.14 AML other m 2020-05-18T02:08:00.23
IV.MOMA.HHE. ML:1.8 0.0001545 0.22 AML other m 2020-05-18T02:08:02.41
IV.MOMA.HHN. ML:1.7 0.0001315 1.82 AML other m 2020-05-18T02:08:02.91
IV.ASSB.HHE. ML:1.5 0.00008645 0.82 AML other m 2020-05-18T02:08:03.03
IV.MNTT.EHN. ML:2.0 0.0002665 0.84 AML other m 2020-05-18T02:08:03.56
IV.CESX.HHE. ML:1.4 0.0000629 0.32 AML other m 2020-05-18T02:08:03.79
IV.ASSB.HHN. ML:1.5 0.0000847 1.26 AML other m 2020-05-18T02:08:03.79
IV.SNTG.HHE. ML:1.3 0.000044399999999999995 0.78 AML other m 2020-05-18T02:08:04.91
IV.FIAM.HHN. ML:1.2 0.00003465 0.3 AML other m 2020-05-18T02:08:04.38
IV.FIAM.HHE. ML:1.1 0.0000322 0.44 AML other m 2020-05-18T02:08:04.58
IV.CESX.HHN. ML:1.4 0.00006845000000000001 0.78 AML other m 2020-05-18T02:08:04.89
IV.EL6.EHN. ML:1.7 0.0001059 0.16 AML other m 2020-05-18T02:08:05.34
IV.ATCC.EHN. ML:1.6 0.00006905 0.66 AML other m 2020-05-18T02:08:05.05
IV.ATCC.EHE. ML:1.4 0.0000537 0.52 AML other m 2020-05-18T02:08:05.17
IV.MNTT.EHE. ML:2.0 0.000272 0.26 AML other m 2020-05-18T02:08:05.43
IV.EL6.EHE. ML:1.8 0.00011485 0.2 AML other m 2020-05-18T02:08:06.17
IV.SNTG.HHN. ML:1.3 0.00004625 0.66 AML other m 2020-05-18T02:08:07.51
IV.FAGN.HHN. ML:1.6 0.00007980000000000002 0.26 AML other m 2020-05-18T02:08:08.84
IV.VCEL.EHE. ML:1.6 0.00006429999999999999 0.46 AML other m 2020-05-18T02:08:10.21
IV.FAGN.HHE. ML:1.7 0.00008935 0.68 AML other m 2020-05-18T02:08:11.10
IV.ARVD.HHE. ML:1.3 0.00002315 1.14 AML other m 2020-05-18T02:08:13.74
IV.T0110.HHN. ML:1.6 0.00005665 0.64 AML other m 2020-05-18T02:08:13.59
IV.VCEL.EHN. ML:1.5 0.0000563 0.6 AML other m 2020-05-18T02:08:13.47
IV.ARVD.HHN. ML:1.3 0.0000233 1.14 AML other m 2020-05-18T02:08:14.15
IV.T0110.HHE. ML:1.6 0.000057749999999999994 0.42 AML other m 2020-05-18T02:08:15.25
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