Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.6 on date 20-03-2020 and time 00:18:26 (Italy) in region 3 km S Norcia (PG)

A magnitude ML 0.6 earthquake occured in region: 3 km S Norcia (PG), on

  • 19-03-2020 23:18:26 (UTC)
  • 20-03-2020 00:18:26 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7660, 13.0930 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 3 4957 4957
Cascia PG 8 3217 8174
Preci PG 13 724 8898
Poggiodomo PG 14 117 9015
Accumoli RI 15 667 9682
Castelsantangelo sul Nera MC 15 281 9963
Cerreto di Spoleto PG 16 1075 11038
Arquata del Tronto AP 17 1178 12216
Monteleone di Spoleto PG 17 599 12815
Cittareale RI 17 482 13297
Visso MC 18 1107 14404
Vallo di Nera PG 19 364 14768
Sellano PG 19 1079 15847

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km SE of Foligno (57155 inhabitants)
43 Km NE of Terni (111501 inhabitants)
51 Km W of Teramo (54892 inhabitants)
53 Km NW of L'Aquila (69753 inhabitants)
69 Km SE of Perugia (166134 inhabitants)
90 Km E of Viterbo (67173 inhabitants)
90 Km NE of Guidonia Montecelio (88673 inhabitants)
91 Km W of Montesilvano (53738 inhabitants)
92 Km N of Tivoli (56533 inhabitants)
98 Km W of Pescara (121014 inhabitants)
99 Km W 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
Reviewed
Rev100 		ML 0.6 2020-03-19
23:18:26		 42.7665 13.0932 11 2020-03-19
23:29:23		 Sala Sismica INGV-Roma 77386931
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-03-19 23:18:26 ± 0.06
Latitude 42.7665 ± 0.0036
Longitude 13.0932 ± 0.0049
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 77386931

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 442
Semi-minor axis of confidence ellipse (meter) 223
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 100
Circular confidence region, given by single value of horizontal uncertainty (meter) 440.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 75
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 27
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) 0.06835
Epicentral distance of station farthest from the epicenter (degree) 0.40380
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 14
Magnitude information

ML:0.6

Field Value
Value 0.6
Uncertainty 0.4
Num. used stations 12
Type of magnitude ML
Reference to an origin 77386931
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-03-19 23:29:23
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CESX.HHN. 2020-03-19T23:18:41.40 0.6 undecidable manual S 247 44.8218 50 0.18 46
IV.MOMA.HNE. 2020-03-19T23:18:41.23 0.6 undecidable manual S 276 42.8238 50 0.56 42
IV.MF5.EHZ. 2020-03-19T23:18:40.64 3.0 undecidable manual S 50 38.628 50 1.09 0
IV.CSP1.EHZ. 2020-03-19T23:18:39.41 0.6 undecidable manual S 14 37.2294 50 0.23 46
IV.ARRO.EHN. 2020-03-19T23:18:38.94 0.6 undecidable manual S 232 33.8439 50 0.66 41
IV.RM33.EHZ. 2020-03-19T23:18:37.15 0.6 undecidable manual S 161 30.2475 50 -0.16 48
IV.FDMO.HHZ. 2020-03-19T23:18:37.12 0.6 undecidable manual S 359 29.9478 50 -0.12 48
IV.CESI.HNE. 2020-03-19T23:18:37.64 0.6 undecidable manual S 330 30.5472 50 0.24 47
IV.SMA1.EHZ. 2020-03-19T23:18:36.00 0.6 undecidable manual S 127 24.8529 50 0.12 48
IV.MMO1.EHZ. 2020-03-19T23:18:35.43 0.6 undecidable manual S 52 24.0537 50 -0.23 48
IV.MOMA.HNE. 2020-03-19T23:18:34.16 0.1 undecidable manual P 276 42.8238 50 -0.59 84
IV.T1299.HNN. 2020-03-19T23:18:34.99 0.6 undecidable manual S 134 21.2676 116 0.1 49
IV.MC2.EHZ. 2020-03-19T23:18:34.15 0.6 undecidable manual S 26 17.871 120 0.3 47
IV.MF5.EHZ. 2020-03-19T23:18:34.30 1.0 negative manual P 50 38.628 50 0.2 23
IV.LNSS.HHZ. 2020-03-19T23:18:34.01 0.6 undecidable manual S 193 18.6702 119 -0.08 49
IV.CESX.HHN. 2020-03-19T23:18:34.97 0.1 undecidable manual P 247 44.8218 50 -0.09 94
IV.CSP1.EHZ. 2020-03-19T23:18:33.79 0.6 negative manual P 14 37.2294 50 -0.09 48
IV.ARRO.EHN. 2020-03-19T23:18:33.10 0.1 undecidable manual P 232 33.8439 50 -0.26 93
IV.SMA1.EHZ. 2020-03-19T23:18:32.80 1.0 undecidable manual P 127 24.8529 50 0.82 20
IV.CESI.HNE. 2020-03-19T23:18:32.78 0.1 undecidable manual P 330 30.5472 50 -0.08 97
IV.RM33.EHZ. 2020-03-19T23:18:32.52 1.0 positive manual P 161 30.2475 50 -0.28 23
IV.FDMO.HHZ. 2020-03-19T23:18:32.61 0.6 positive manual P 359 29.9478 50 -0.16 48
IV.NRCA.HHZ. 2020-03-19T23:18:31.09 0.3 undecidable manual S 13 7.5813 144 -0.07 75
IV.MMO1.EHZ. 2020-03-19T23:18:31.52 0.6 positive manual P 52 24.0537 50 -0.33 46
IV.T1299.HNN. 2020-03-19T23:18:31.54 0.1 undecidable manual P 134 21.2676 116 0.13 98
IV.LNSS.HHZ. 2020-03-19T23:18:30.95 0.1 undecidable manual P 193 18.6702 119 0.01 100
IV.MC2.EHZ. 2020-03-19T23:18:30.88 1.0 undecidable manual P 26 17.871 120 0.07 25
IV.NRCA.HHZ. 2020-03-19T23:18:29.41 0.1 negative manual P 13 7.5813 144 0.15 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:1.2 0.0002415 0.1 AML other m 2020-03-19T23:18:31.20
IV.NRCA.HHE. ML:1.4 0.0003645 0.1 AML other m 2020-03-19T23:18:31.32
IV.LNSS.HHE. ML:0.8 0.000048 0.1 AML other m 2020-03-19T23:18:34.80
IV.LNSS.HHN. ML:0.8 0.000045350000000000005 1.46 AML other m 2020-03-19T23:18:34.08
IV.NRCA.HNE. ML:1.4 0.00034131834999999997 1.2416 AML other m 2020-03-19T23:18:31.17
IV.NRCA.HNN. ML:1.2 0.00024826315000000003 0.448 AML other m 2020-03-19T23:18:31.19
IV.RM33.EHE. ML:0.3 0.0000108614925 1.3696 AML other m 2020-03-19T23:18:37.43
IV.RM33.EHN. ML:0.5 0.000013105740000000002 0.3456 AML other m 2020-03-19T23:18:37.52
IV.FDMO.HHE. ML:0.3 0.0000096326465 1.4976 AML other m 2020-03-19T23:18:37.13
IV.FDMO.HHN. ML:0.3 0.0000079127305 0.2176 AML other m 2020-03-19T23:18:37.94
IV.SMA1.EHE. ML:0.2 0.00001244207 0.5888 AML other m 2020-03-19T23:18:37.20
IV.SMA1.EHN. ML:0.4 0.000012617805 1.8304 AML other m 2020-03-19T23:18:36.86
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