Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 18-05-2020 and time 06:18:55 (Italy) in region 6 km E Norcia (PG)

A magnitude ML 1.5 earthquake occured in region: 6 km E Norcia (PG), on

  • 18-05-2020 04:18:55 (UTC)
  • 18-05-2020 06:18:55 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7750, 13.1610 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.

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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 11 667 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 17 482 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 NE of Tivoli (56533 inhabitants)
95 Km NW of Chieti (51815 inhabitants)
95 Km E of Viterbo (67173 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 1.5 2020-05-18
04:18:55		 42.7753 13.1607 10 2020-11-19
12:36:52		 Bollettino Sismico Italiano INGV 80881781
Reviewed
Rev100 		ML 1.5 2020-05-18
04:18:55		 42.7752 13.1673 10 2020-05-18
04:28:03		 Sala Sismica INGV-Roma 79262281
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-05-18 04:18:55 ± 0.06
Latitude 42.7753 ± 0.0027
Longitude 13.1607 ± 0.0049
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 80881781

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 395
Semi-minor axis of confidence ellipse (meter) 124
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 82
Circular confidence region, given by single value of horizontal uncertainty (meter) 390.0
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 40
Number of defining phases 40
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.29
Epicentral distance of station closest to the epicenter (degree) 0.06745
Epicentral distance of station farthest from the epicenter (degree) 0.74014
Number of stations at which the event was observed 25
Number of stations from which data was used for origin computation 25
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 42
Type of magnitude ML
Reference to an origin 79262281
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-05-18 04:28:03

ML:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 42
Type of magnitude ML
Reference to an origin 80881781
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-07-08 13:22:09
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.TERO.HHZ. 2020-05-18T04:19:09.04 0.1 undecidable manual S 115 39.9267 50 -0.08 95
IV.ARRO.EHZ. 2020-05-18T04:19:09.60 0.1 undecidable manual S 236 38.8278 50 0.75 79
IV.ARVD.HHZ. 2020-05-18T04:19:09.82 0.1 undecidable manual P 348 82.1511 50 -0.15 87
IV.GUMA.HHZ. 2020-05-18T04:19:08.19 0.1 undecidable manual S 24 34.8429 50 0.41 90
IV.MF5.EHZ. 2020-05-18T04:19:08.51 0.3 undecidable manual S 46 33.8439 50 1 53
IV.CAMP.HHZ. 2020-05-18T04:19:07.17 0.1 undecidable manual S 143 33.4443 50 -0.22 94
IV.CSP1.EHZ. 2020-05-18T04:19:07.75 0.1 undecidable manual S 6 35.3424 50 -0.14 95
IV.CESI.HHZ. 2020-05-18T04:19:06.99 0.1 undecidable manual S 321 32.8449 50 -0.26 93
IV.ATCC.EHZ. 2020-05-18T04:19:06.95 1.0 undecidable manual P 317 62.0934 50 0.07 23
IV.FAGN.HHZ. 2020-05-18T04:19:06.73 0.3 undecidable manual P 148 66.2781 50 -0.79 55
IV.RM33.EHZ. 2020-05-18T04:19:06.50 0.1 undecidable manual S 172 29.8479 50 0.06 97
IV.EL6.EHZ. 2020-05-18T04:19:06.60 0.3 undecidable manual P 356 61.5939 50 -0.21 67
IV.ASSB.HHZ. 2020-05-18T04:19:05.40 0.3 undecidable manual P 306 50.4162 50 0.32 67
IV.SNTG.HHZ. 2020-05-18T04:19:05.84 0.3 undecidable manual P 342 56.0994 50 -0.12 69
IV.FDMO.HHZ. 2020-05-18T04:19:05.97 0.1 undecidable manual S 348 29.5482 50 -0.4 91
IV.MNTT.EHZ. 2020-05-18T04:19:05.55 0.3 undecidable manual P 48 47.5191 50 0.91 54
IV.SMA1.EHZ. 2020-05-18T04:19:04.03 0.1 undecidable manual S 138 21.4674 115 0.11 98
IV.LNSS.HHZ. 2020-05-18T04:19:04.04 0.1 undecidable manual S 207 21.4674 114 0.11 98
IV.MOMA.HHZ. 2020-05-18T04:19:04.87 0.3 undecidable manual P 274 48.2184 50 0.13 70
IV.CESX.HHZ. 2020-05-18T04:19:04.85 0.1 undecidable manual P 249 50.3163 50 -0.22 91
IV.SAP2.EHZ. 2020-05-18T04:19:03.82 0.3 undecidable manual P 28 40.5261 50 0.26 69
IV.TERO.HHZ. 2020-05-18T04:19:03.33 0.1 undecidable manual P 115 39.9267 50 -0.13 94
IV.MTRA.EHZ. 2020-05-18T04:19:03.01 0.1 undecidable manual S 96 19.2696 117 -0.23 96
IV.MF5.EHZ. 2020-05-18T04:19:02.75 0.1 undecidable manual P 46 33.8439 50 0.22 93
IV.MC2.EHZ. 2020-05-18T04:19:02.17 0.1 undecidable manual S 9 15.2736 123 0.14 98
IV.GUMA.HHZ. 2020-05-18T04:19:02.82 0.1 undecidable manual P 24 34.8429 50 0.13 95
IV.CESI.HHZ. 2020-05-18T04:19:02.28 0.1 positive manual P 321 32.8449 50 -0.1 96
IV.MMO1.EHZ. 2020-05-18T04:19:02.93 0.1 undecidable manual S 44 19.2696 117 -0.3 94
IV.CAMP.HHZ. 2020-05-18T04:19:02.31 0.1 undecidable manual P 143 33.4443 50 -0.15 95
IV.CSP1.EHZ. 2020-05-18T04:19:02.52 0.1 positive manual P 6 35.3424 50 -0.23 93
IV.ARRO.EHZ. 2020-05-18T04:19:02.84 0.3 undecidable manual P 236 38.8278 50 -0.46 66
IV.RM33.EHZ. 2020-05-18T04:19:01.75 0.1 undecidable manual P 172 29.8479 50 -0.17 95
IV.FDMO.HHZ. 2020-05-18T04:19:01.61 0.1 positive manual P 348 29.5482 50 -0.26 93
IV.MTRA.EHZ. 2020-05-18T04:19:00.11 0.1 undecidable manual P 96 19.2696 117 0.04 99
IV.SMA1.EHZ. 2020-05-18T04:19:00.57 0.1 undecidable manual P 138 21.4674 115 0.12 98
IV.LNSS.HHZ. 2020-05-18T04:19:00.68 0.1 positive manual P 207 21.4674 114 0.22 96
IV.MMO1.EHZ. 2020-05-18T04:19:00.05 0.1 positive manual P 44 19.2696 117 -0.01 100
IV.NRCA.HNZ. 2020-05-18T04:18:59.78 0.1 undecidable manual S 330 7.4814 143 -0.23 98
IV.MC2.EHZ. 2020-05-18T04:18:59.58 0.1 positive manual P 9 15.2736 123 0.22 97
IV.NRCA.HNZ. 2020-05-18T04:18:58.40 0.1 negative manual P 330 7.4814 143 0.2 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:2.5 0.004974999999999999 0.14 AML other m 2020-05-18T04:18:59.89
IV.NRCA.HNN. ML:2.5 0.00439 0.12 AML other m 2020-05-18T04:18:59.90
IV.NRCA.HHE. ML:2.5 0.005324999999999999 1.84 AML other m 2020-05-18T04:19:00.02
IV.NRCA.HNE. ML:2.5 0.00507 1.84 AML other m 2020-05-18T04:19:00.03
IV.MTRA.HNE. ML:1.9 0.000654 0.34 AML other m 2020-05-18T04:19:03.43
IV.MTRA.EHE. ML:1.9 0.0006 0.34 AML other m 2020-05-18T04:19:03.43
IV.MTRA.HNN. ML:1.8 0.0005315 0.22 AML other m 2020-05-18T04:19:03.59
IV.MTRA.EHN. ML:1.8 0.0005189999999999999 0.22 AML other m 2020-05-18T04:19:03.70
IV.LNSS.HHE. ML:2.0 0.000736 0.7 AML other m 2020-05-18T04:19:04.44
IV.LNSS.HHN. ML:2.1 0.0008065 0.26 AML other m 2020-05-18T04:19:04.83
IV.FDMO.HHN. ML:1.3 0.0001053 0.34 AML other m 2020-05-18T04:19:06.31
IV.SMA1.EHE. ML:1.5 0.000221 0.56 AML other m 2020-05-18T04:19:06.62
IV.RM33.EHN. ML:1.4 0.00011549999999999999 0.3 AML other m 2020-05-18T04:19:07.21
IV.CAMP.HHE. ML:1.3 0.0000864 0.26 AML other m 2020-05-18T04:19:07.49
IV.CESI.HHE. ML:1.6 0.00017 0.42 AML other m 2020-05-18T04:19:07.56
IV.CESI.HHN. ML:1.6 0.00016350000000000002 0.24 AML other m 2020-05-18T04:19:07.57
IV.FDMO.HHE. ML:1.4 0.00012084999999999998 0.18 AML other m 2020-05-18T04:19:07.51
IV.RM33.EHE. ML:1.5 0.00014450000000000002 1.46 AML other m 2020-05-18T04:19:07.80
IV.SMA1.EHN. ML:1.5 0.0002215 0.4 AML other m 2020-05-18T04:19:07.85
IV.CAMP.HHN. ML:1.1 0.00004815 0.66 AML other m 2020-05-18T04:19:08.25
IV.MF5.EHE. ML:1.5 0.00013245000000000002 0.32 AML other m 2020-05-18T04:19:08.82
IV.CSP1.EHE. ML:1.6 0.0001507 0.98 AML other m 2020-05-18T04:19:08.99
IV.CSP1.EHN. ML:1.7 0.0001905 0.36 AML other m 2020-05-18T04:19:09.20
IV.MF5.EHN. ML:1.4 0.0001109 0.62 AML other m 2020-05-18T04:19:09.74
IV.GUMA.HHN. ML:1.9 0.00029400000000000004 0.74 AML other m 2020-05-18T04:19:09.10
IV.ARRO.EHE. ML:1.2 0.00005525 1.14 AML other m 2020-05-18T04:19:09.04
IV.TERO.HHN. ML:1.3 0.00007395000000000001 1.14 AML other m 2020-05-18T04:19:09.72
IV.ARRO.EHN. ML:1.3 0.0000708 0.14 AML other m 2020-05-18T04:19:10.44
IV.TERO.HHE. ML:1.2 0.00005605 0.08 AML other m 2020-05-18T04:19:10.57
IV.GUMA.HHE. ML:1.8 0.000252 0.42 AML other m 2020-05-18T04:19:11.49
IV.CESX.HHE. ML:1.1 0.000035000000000000004 0.32 AML other m 2020-05-18T04:19:14.36
IV.ASSB.HHN. ML:1.2 0.00003985 0.6 AML other m 2020-05-18T04:19:14.24
IV.SNTG.HHN. ML:1.1 0.0000291 0.48 AML other m 2020-05-18T04:19:14.68
IV.ASSB.HHE. ML:1.2 0.000042999999999999995 0.14 AML other m 2020-05-18T04:19:15.18
IV.CESX.HHN. ML:1.2 0.00004185 0.26 AML other m 2020-05-18T04:19:15.63
IV.MNTT.EHE. ML:1.8 0.0001555 0.2 AML other m 2020-05-18T04:19:16.45
IV.MNTT.EHN. ML:1.7 0.0001385 0.98 AML other m 2020-05-18T04:19:17.52
IV.SNTG.HHE. ML:1.0 0.00002645 0.42 AML other m 2020-05-18T04:19:17.33
IV.FAGN.HHN. ML:1.4 0.000039599999999999994 1.54 AML other m 2020-05-18T04:19:20.90
IV.FAGN.HHE. ML:1.5 0.000054900000000000006 1.28 AML other m 2020-05-18T04:19:22.26
IV.ATCC.EHE. ML:1.5 0.0000667 0.44 AML other m 2020-05-18T04:19:24.04
IV.ATCC.EHN. ML:1.4 0.0000518 1.54 AML other m 2020-05-18T04:19:25.08
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