Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 16-05-2020 and time 09:50:32 (UTC) in region 4 km E Norcia (PG)

A magnitude ML 1.6 earthquake occured in region: 4 km E Norcia (PG), on

  • 16-05-2020 09:50:32 (UTC)
  • 16-05-2020 11:50:32 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8020, 13.1410 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 4 4957 4957
Castelsantangelo sul Nera MC 11 281 5238
Preci PG 12 724 5962
Arquata del Tronto AP 13 1178 7140
Cascia PG 14 3217 10357
Accumoli RI 15 667 11024
Visso MC 15 1107 12131
Ussita MC 16 444 12575
Montegallo AP 16 523 13098
Cerreto di Spoleto PG 18 1075 14173
Montemonaco AP 19 604 14777
Poggiodomo PG 20 117 14894
Sellano PG 20 1079 15973

Municipalities with at least 50000 inhabitants

An earthquake occurred to
40 Km E of Foligno (57155 inhabitants)
48 Km NE of Terni (111501 inhabitants)
49 Km W of Teramo (54892 inhabitants)
54 Km NW of L'Aquila (69753 inhabitants)
70 Km E of Perugia (166134 inhabitants)
89 Km W of Montesilvano (53738 inhabitants)
95 Km E of Viterbo (67173 inhabitants)
95 Km NE of Guidonia Montecelio (88673 inhabitants)
95 Km W of Pescara (121014 inhabitants)
96 Km SW of Ancona (100861 inhabitants)
97 Km N of Tivoli (56533 inhabitants)
98 Km NW of Chieti (51815 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 1.6 2020-05-16
09:50:32		 42.8018 13.1412 9 2020-11-19
12:36:58		 Bollettino Sismico Italiano INGV 82356291
Reviewed
Rev100 		ML 1.5 2020-05-16
09:50:31		 42.8018 13.138 10 2020-05-16
10:00:56		 Sala Sismica INGV-Roma 79195981
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-05-16 09:50:32 ± 0.04
Latitude 42.8018 ± 0.0027
Longitude 13.1412 ± 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 82356291

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 325
Semi-minor axis of confidence ellipse (meter) 89
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 67
Circular confidence region, given by single value of horizontal uncertainty (meter) 330.0
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 47
Number of defining phases 44
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.64481
Number of stations at which the event was observed 28
Number of stations from which data was used for origin computation 25
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 34
Type of magnitude ML
Reference to an origin 82356291
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-08-26 23:41:02

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 28
Type of magnitude ML
Reference to an origin 79195981
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-05-16 10:00:56
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PE3.EHZ. 2020-05-16T09:51:03.52 3.0 undecidable manual S -3.78 0
IV.ROSPO.HHZ. 2020-05-16T09:51:01.66 3.0 undecidable manual P 3.84 0
IV.BSSO.HHZ. 2020-05-16T09:51:01.77 3.0 undecidable manual Pn 1.08 0
IV.SNTG.HHZ. 2020-05-16T09:50:49.27 0.6 undecidable manual S 342 52.8027 50 0.31 45
IV.MOMA.HHZ. 2020-05-16T09:50:48.36 0.6 undecidable manual S 270 46.5201 50 1.09 34
IV.ASSB.HHZ. 2020-05-16T09:50:47.69 0.6 undecidable manual S 304 47.4192 50 0.17 46
IV.TERO.HHZ. 2020-05-16T09:50:45.93 0.6 undecidable manual S 118 42.624 50 -0.31 46
IV.MF5.EHZ. 2020-05-16T09:50:44.26 0.6 undecidable manual S 51 33.1446 50 0.56 43
IV.MURB.HHZ. 2020-05-16T09:50:44.90 0.3 undecidable manual P 316 71.5728 50 0.21 66
IV.CAMP.HHZ. 2020-05-16T09:50:44.29 0.3 undecidable manual S 143 36.741 50 -0.37 68
IV.GUMA.HHZ. 2020-05-16T09:50:43.74 0.3 undecidable manual S 29 32.9448 50 0.08 73
IV.RM33.EHZ. 2020-05-16T09:50:43.73 0.6 undecidable manual S 170 33.0447 50 0.05 49
IV.CSP1.EHZ. 2020-05-16T09:50:43.40 0.3 undecidable manual S 9 32.5452 50 -0.16 72
IV.EL6.EHZ. 2020-05-16T09:50:42.84 0.3 undecidable manual P 357 58.5969 50 0.14 69
IV.SNTG.HHZ. 2020-05-16T09:50:42.03 0.3 undecidable manual P 342 52.8027 50 0.22 68
IV.CESI.HHZ. 2020-05-16T09:50:42.45 0.6 undecidable manual S 320 29.6481 50 -0.31 47
IV.FIAM.HHZ. 2020-05-16T09:50:42.50 0.3 undecidable manual P 182 59.2962 50 -0.3 66
IV.ATCC.EHZ. 2020-05-16T09:50:42.78 0.1 undecidable manual P 316 58.7967 50 0.05 93
IV.FDMO.HHZ. 2020-05-16T09:50:41.34 0.3 undecidable manual S 350 26.3514 110 -0.42 69
IV.MOMA.HHZ. 2020-05-16T09:50:40.82 0.1 undecidable manual P 270 46.5201 50 -0.01 96
IV.ASSB.HHZ. 2020-05-16T09:50:40.75 0.1 undecidable manual P 304 47.4192 50 -0.22 92
IT.MTCL.HGZ. 2020-05-16T09:50:40.67 0.3 undecidable manual S 332 24.2535 111 -0.38 69
IT.GNU.HGZ. 2020-05-16T09:50:40.73 0.6 undecidable manual P 270 46.5201 50 -0.1 47
IV.T1299.EHZ. 2020-05-16T09:50:40.61 0.3 undecidable manual S 148 21.867 113 0.31 71
IV.LNSS.HHZ. 2020-05-16T09:50:40.95 0.3 undecidable manual S 200 23.5542 112 0.11 74
IV.CAMP.HHZ. 2020-05-16T09:50:39.02 0.1 undecidable manual P 143 36.741 50 -0.31 92
IV.MTRA.EHZ. 2020-05-16T09:50:39.97 0.3 undecidable manual S 103 21.3675 114 -0.18 73
IV.TERO.HHZ. 2020-05-16T09:50:39.94 0.3 undecidable manual P 118 42.624 50 -0.29 68
IV.MF5.EHZ. 2020-05-16T09:50:39.01 0.1 undecidable manual P 51 33.1446 50 0.24 94
IV.ARRO.EHE. 2020-05-16T09:50:39.73 0.3 undecidable manual P 231 39.3273 50 0 73
IV.MMO1.EHZ. 2020-05-16T09:50:39.14 0.3 undecidable manual S 54 18.5703 117 -0.12 74
IV.FEMA.HNZ. 2020-05-16T09:50:39.33 0.3 undecidable manual S 337 19.2696 116 -0.15 74
IV.RM33.EHZ. 2020-05-16T09:50:38.58 0.3 undecidable manual P 170 33.0447 50 -0.18 71
IV.CSP1.EHZ. 2020-05-16T09:50:38.56 0.3 undecidable manual P 9 32.5452 50 -0.13 72
IV.CESI.HHZ. 2020-05-16T09:50:38.15 0.1 positive manual P 320 29.6481 50 -0.08 98
IV.GUMA.HHZ. 2020-05-16T09:50:38.96 0.3 undecidable manual P 29 32.9448 50 0.22 71
IV.T1299.EHZ. 2020-05-16T09:50:37.10 0.1 undecidable manual P 148 21.867 113 0.3 95
IV.LNSS.HHZ. 2020-05-16T09:50:37.14 0.3 undecidable manual P 200 23.5542 112 0.02 75
IV.MC2.EHZ. 2020-05-16T09:50:37.89 0.3 undecidable manual S 18 12.7761 126 0.35 71
IV.FDMO.HHZ. 2020-05-16T09:50:37.55 0.1 undecidable manual P 350 26.3514 110 -0.1 98
IT.MTCL.HGZ. 2020-05-16T09:50:37.08 0.3 undecidable manual P 332 24.2535 111 -0.16 73
IV.MMO1.EHZ. 2020-05-16T09:50:36.27 0.1 positive manual P 54 18.5703 117 0.06 100
IV.FEMA.HNZ. 2020-05-16T09:50:36.53 0.6 undecidable manual P 337 19.2696 116 0.2 49
IV.MTRA.EHZ. 2020-05-16T09:50:36.77 0.1 positive manual P 103 21.3675 114 0.05 100
IV.NRCA.HNZ. 2020-05-16T09:50:35.34 0.3 undecidable manual S 328 4.0959 156 -0.26 74
IV.MC2.EHZ. 2020-05-16T09:50:35.52 0.3 undecidable manual P 18 12.7761 126 0.31 72
IV.NRCA.HNZ. 2020-05-16T09:50:34.28 0.1 negative manual P 328 4.0959 156 0.19 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:2.7 0.008525 0.18 AML other m 2020-05-16T09:50:35.38
IV.NRCA.HNE. ML:2.6 0.008275000000000001 0.18 AML other m 2020-05-16T09:50:35.39
IV.NRCA.HHN. ML:2.5 0.00552 0.4 AML other m 2020-05-16T09:50:35.38
IV.NRCA.HNN. ML:2.4 0.004525 0.42 AML other m 2020-05-16T09:50:35.38
IV.MTRA.EHN. ML:1.8 0.000463 0.78 AML other m 2020-05-16T09:50:40.61
IV.MTRA.EHE. ML:1.7 0.00037 0.32 AML other m 2020-05-16T09:50:40.51
IV.LNSS.HHN. ML:2.1 0.0008085 0.26 AML other m 2020-05-16T09:50:41.42
IV.LNSS.HHE. ML:1.8 0.0004125 0.7 AML other m 2020-05-16T09:50:41.20
IV.FDMO.HHN. ML:1.4 0.00014250000000000002 1 AML other m 2020-05-16T09:50:42.58
IV.CESI.HHE. ML:1.6 0.0001945 1.62 AML other m 2020-05-16T09:50:42.03
IV.FDMO.HHE. ML:1.4 0.000131 0.16 AML other m 2020-05-16T09:50:43.15
IV.CESI.HHN. ML:1.8 0.0002735 0.3 AML other m 2020-05-16T09:50:43.04
IV.CSP1.EHN. ML:1.5 0.00014749999999999998 0.46 AML other m 2020-05-16T09:50:43.81
IV.CAMP.HHN. ML:1.0 0.0000349 0.52 AML other m 2020-05-16T09:50:44.65
IV.CAMP.HHE. ML:1.4 0.00010180000000000001 0.2 AML other m 2020-05-16T09:50:44.70
IV.CSP1.EHE. ML:1.6 0.0001895 0.62 AML other m 2020-05-16T09:50:44.78
IV.GUMA.HHE. ML:2.0 0.000486 1.62 AML other m 2020-05-16T09:50:45.86
IV.RM33.EHN. ML:1.4 0.0001021 1.36 AML other m 2020-05-16T09:50:45.08
IV.RM33.EHE. ML:1.3 0.0000925 0.9 AML other m 2020-05-16T09:50:45.62
IV.GUMA.HHN. ML:1.8 0.00029749999999999997 0.28 AML other m 2020-05-16T09:50:46.71
IV.TERO.HHN. ML:1.4 0.00008599999999999999 0.96 AML other m 2020-05-16T09:50:46.37
IV.TERO.HHE. ML:1.5 0.0001001 0.74 AML other m 2020-05-16T09:50:47.38
IV.ASSB.HHN. ML:1.4 0.00007439999999999999 1.84 AML other m 2020-05-16T09:50:48.92
IV.ASSB.HHE. ML:1.5 0.00007899999999999998 1.08 AML other m 2020-05-16T09:50:48.89
IV.MOMA.HHN. ML:1.2 0.00004955 0.18 AML other m 2020-05-16T09:50:49.60
IV.MOMA.HHE. ML:1.4 0.0000789 0.18 AML other m 2020-05-16T09:50:50.18
IV.SNTG.HHN. ML:1.2 0.000033 0.82 AML other m 2020-05-16T09:50:51.31
IV.SNTG.HHE. ML:1.2 0.00003394999999999999 0.7 AML other m 2020-05-16T09:50:52.30
IV.FIAM.HHE. ML:0.9 0.0000152 0.62 AML other m 2020-05-16T09:50:52.35
IV.ATCC.EHN. ML:1.4 0.00005685 0.66 AML other m 2020-05-16T09:50:52.03
IV.FIAM.HHN. ML:0.9 0.00001655 0.2 AML other m 2020-05-16T09:50:52.26
IV.ATCC.EHE. ML:1.4 0.00005955 0.18 AML other m 2020-05-16T09:50:53.14
IV.MURB.HHE. ML:1.8 0.0000944 0.28 AML other m 2020-05-16T09:50:58.32
IV.MURB.HHN. ML:1.8 0.00008895000000000001 0.9 AML other m 2020-05-16T09:50:58.78
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