Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 17-05-2020 and time 22:19:28 (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 22:19:28 (UTC)
  • 18-05-2020 00:19:28 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7830, 13.1560 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

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 14 3217 10300
Preci PG 14 724 11024
Montegallo AP 16 523 11547
Visso MC 17 1107 12654
Ussita MC 18 444 13098
Cittareale RI 18 482 13580
Montemonaco AP 19 604 14184
Poggiodomo PG 20 117 14301
Cerreto di Spoleto PG 20 1075 15376

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)
52 Km NW of L'Aquila (69753 inhabitants)
72 Km SE of Perugia (166134 inhabitants)
87 Km W of Montesilvano (53738 inhabitants)
94 Km W of Pescara (121014 inhabitants)
94 Km NE of Guidonia Montecelio (88673 inhabitants)
95 Km E of Viterbo (67173 inhabitants)
96 Km NE of Tivoli (56533 inhabitants)
96 Km NW of Chieti (51815 inhabitants)
97 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
22:19:28		 42.7827 13.1562 10 2020-05-17
22:27:57		 Sala Sismica INGV-Roma 79246301
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-05-17 22:19:28 ± 0.08
Latitude 42.7827 ± 0.0027
Longitude 13.1562 ± 0.0061
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 79246301

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 345
Semi-minor axis of confidence ellipse (meter) 328
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 259
Circular confidence region, given by single value of horizontal uncertainty (meter) 340.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 124
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.18
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.25900
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.0
Num. used stations 4
Type of magnitude ML
Reference to an origin 79246301
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-05-17 22:27:57
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FDMO.HHZ. 2020-05-17T22:19:38.66 0.6 undecidable manual S 349 28.749 50 -0.09 49
IV.TERO.HHZ. 2020-05-17T22:19:36.67 3.0 undecidable manual P 0.09 0
IV.LNSS.HNZ. 2020-05-17T22:19:36.85 0.6 undecidable manual S 205 22.0668 115 -0.04 50
IV.MMO1.EHZ. 2020-05-17T22:19:35.81 0.3 undecidable manual S 47 18.9699 118 -0.12 74
IV.MTRA.EHN. 2020-05-17T22:19:35.96 0.6 undecidable manual S 98 19.7691 117 -0.22 48
IV.T1299.EHZ. 2020-05-17T22:19:35.96 0.3 undecidable manual S 148 19.3695 118 -0.11 74
IV.FDMO.HHZ. 2020-05-17T22:19:34.28 0.1 undecidable manual P 349 28.749 50 -0.11 97
IV.MC2.EHZ. 2020-05-17T22:19:34.88 0.3 undecidable manual S 11 14.5743 125 0.26 72
IV.LNSS.HNZ. 2020-05-17T22:19:33.31 0.1 undecidable manual P 205 22.0668 115 -0.01 100
IV.MTRA.EHN. 2020-05-17T22:19:33.15 0.3 undecidable manual P 98 19.7691 117 0.24 72
IV.T1299.EHZ. 2020-05-17T22:19:33.00 0.1 undecidable manual P 148 19.3695 118 0.15 98
IV.MC2.EHZ. 2020-05-17T22:19:32.24 0.1 undecidable manual P 11 14.5743 125 0.23 97
IV.MMO1.EHZ. 2020-05-17T22:19:32.60 0.1 undecidable manual P 47 18.9699 118 -0.17 97
IV.NRCA.HHZ. 2020-05-17T22:19:32.42 0.1 undecidable manual S 329 6.5934 147 -0.27 97
IV.NRCA.HHZ. 2020-05-17T22:19:31.04 0.1 undecidable manual P 329 6.5934 147 0.14 100
IV.SMA1.EHE. 2020-05-17T22:19:30.33 3.0 undecidable manual P 22.3554 -3.04 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:1.2 0.00022950000000000002 0.12 AML other m 2020-05-17T22:19:32.51
IV.NRCA.HHE. ML:1.2 0.0002585 0.16 AML other m 2020-05-17T22:19:32.55
IV.NRCA.HNE. ML:1.2 0.00023599360000000003 0.1536 AML other m 2020-05-17T22:19:32.55
IV.NRCA.HNN. ML:1.1 0.0002080402 1.1648 AML other m 2020-05-17T22:19:32.51
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