Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 17-05-2020 and time 22:59:17 (UTC) in region 5 km E Norcia (PG)

A magnitude ML 1.2 earthquake occured in region: 5 km E Norcia (PG), on

  • 17-05-2020 22:59:17 (UTC)
  • 18-05-2020 00:59:17 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7780, 13.1540 at 10 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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
Cerreto di Spoleto PG 20 1075 18033

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)
87 Km W of Montesilvano (53738 inhabitants)
93 Km NE of Guidonia Montecelio (88673 inhabitants)
94 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
Reviewed
Rev100 		ML 1.2 2020-05-17
22:59:17		 42.778 13.1538 10 2020-05-17
23:04:26		 Sala Sismica INGV-Roma 79247641
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-05-17 22:59:17 ± 0.07
Latitude 42.7780 ± 0.0036
Longitude 13.1538 ± 0.0061
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 79247641

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 517
Semi-minor axis of confidence ellipse (meter) 369
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 120
Circular confidence region, given by single value of horizontal uncertainty (meter) 520.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 86
Number of associated phases, regardless of their use for origin computation 27
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.27
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.34714
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 12
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 18
Type of magnitude ML
Reference to an origin 79247641
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-05-17 23:04:26
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.EL6.EHZ. 2020-05-17T22:59:37.27 3.0 undecidable manual S -0.22 0
IV.ARRO.EHZ. 2020-05-17T22:59:30.29 0.1 undecidable manual S 235 38.5281 50 0.17 93
IV.CSP1.EHZ. 2020-05-17T22:59:29.00 0.1 undecidable manual S 7 35.0427 50 -0.17 94
IV.MF5.EHZ. 2020-05-17T22:59:29.84 0.1 undecidable manual S 47 34.0437 50 0.94 73
IV.CESI.HHZ. 2020-05-17T22:59:28.37 0.3 undecidable manual S 321 32.3454 50 -0.07 72
IV.EL6.EHZ. 2020-05-17T22:59:28.10 3.0 negative manual P -0.51 0
IV.ASSB.HHZ. 2020-05-17T22:59:27.94 3.0 negative manual P 1.24 0
IV.MNTT.EHZ. 2020-05-17T22:59:27.00 3.0 negative manual P 0.64 0
IV.FDMO.HHZ. 2020-05-17T22:59:27.23 0.1 undecidable manual S 349 29.1486 50 -0.38 91
IV.LNSS.HHZ. 2020-05-17T22:59:25.22 0.1 undecidable manual S 206 21.5673 115 -0.08 98
IV.MF5.EHZ. 2020-05-17T22:59:24.01 0.1 undecidable manual P 47 34.0437 50 0.1 95
IV.MMO1.EHZ. 2020-05-17T22:59:24.51 0.1 undecidable manual S 46 19.4694 117 -0.15 97
IV.ARRO.EHZ. 2020-05-17T22:59:24.66 0.1 undecidable manual P 235 38.5281 50 0.05 95
IV.MTRA.EHZ. 2020-05-17T22:59:24.55 0.1 undecidable manual S 97 19.869 116 -0.25 95
IV.TERO.HHZ. 2020-05-17T22:59:24.69 3.0 undecidable manual P -0.44 0
IV.MC2.EHZ. 2020-05-17T22:59:23.72 0.1 undecidable manual S 11 15.0738 123 0.38 93
IV.RM33.EHZ. 2020-05-17T22:59:23.21 1.0 negative manual P -0.17 0.49
IV.CSP1.EHZ. 2020-05-17T22:59:23.84 0.1 undecidable manual P 7 35.0427 50 -0.22 93
IV.CESI.HHZ. 2020-05-17T22:59:23.60 0.1 undecidable manual P 321 32.3454 50 -0.04 97
IV.FDMO.HHZ. 2020-05-17T22:59:22.89 0.1 undecidable manual P 349 29.1486 50 -0.27 93
IV.SMA1.EHZ. 2020-05-17T22:59:22.00 1.0 positive manual P -0.02 0.49
IV.MMO1.EHZ. 2020-05-17T22:59:21.26 0.1 undecidable manual P 46 19.4694 117 -0.2 96
IV.NRCA.HNZ. 2020-05-17T22:59:21.18 0.1 undecidable manual S 332 6.993 145 -0.09 100
IV.LNSS.HHZ. 2020-05-17T22:59:21.93 0.1 undecidable manual P 206 21.5673 115 0.1 97
IV.MTRA.EHZ. 2020-05-17T22:59:21.40 0.1 undecidable manual P 97 19.869 116 -0.14 97
IV.MC2.EHZ. 2020-05-17T22:59:20.88 0.1 undecidable manual P 11 15.0738 123 0.19 97
IV.NRCA.HNZ. 2020-05-17T22:59:19.78 0.1 undecidable manual P 332 6.993 145 0.28 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HNN. ML:1.9 0.0011099999999999999 0.1 AML other m 2020-05-17T22:59:21.26
IV.NRCA.HHN. ML:2.0 0.001355 0.1 AML other m 2020-05-17T22:59:21.21
IV.NRCA.HNE. ML:1.9 0.0013399999999999998 0.14 AML other m 2020-05-17T22:59:21.26
IV.NRCA.HHE. ML:2.0 0.001375 0.14 AML other m 2020-05-17T22:59:21.26
IV.MTRA.EHE. ML:1.5 0.00021250000000000002 0.34 AML other m 2020-05-17T22:59:24.87
IV.MTRA.EHN. ML:1.4 0.00019350000000000001 0.22 AML other m 2020-05-17T22:59:24.86
IV.LNSS.HHE. ML:1.5 0.00020950000000000002 1.68 AML other m 2020-05-17T22:59:26.85
IV.LNSS.HHN. ML:1.5 0.000219 0.28 AML other m 2020-05-17T22:59:26.15
IV.FDMO.HHN. ML:1.0 0.000046949999999999996 1.08 AML other m 2020-05-17T22:59:27.00
IV.SMA1.EHE. ML:1.1 0.0000839 1.44 AML other m 2020-05-17T22:59:27.90
IV.FDMO.HHE. ML:1.0 0.00004255 1.08 AML other m 2020-05-17T22:59:27.45
IV.CESI.HHN. ML:1.2 0.00007055000000000001 0.4 AML other m 2020-05-17T22:59:28.83
IV.CESI.HHE. ML:1.1 0.00005495 1.6 AML other m 2020-05-17T22:59:28.83
IV.RM33.EHE. ML:1.1 0.000052900000000000005 1.48 AML other m 2020-05-17T22:59:28.15
IV.SMA1.EHN. ML:1.1 0.00009035 0.52 AML other m 2020-05-17T22:59:29.14
IV.RM33.EHN. ML:0.9 0.000033849999999999996 0.92 AML other m 2020-05-17T22:59:29.64
IV.TERO.HHN. ML:0.9 0.000023100000000000002 0.08 AML other m 2020-05-17T22:59:30.73
IV.TERO.HHE. ML:0.9 0.0000233 0.28 AML other m 2020-05-17T22:59:31.14
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