Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 06-03-2021 and time 14:02:28 (UTC) in region 3 km NE Norcia (PG)

A magnitude ML 1.3 earthquake occured in region: 3 km NE Norcia (PG), on

  • 06-03-2021 14:02:28 (UTC)
  • 06-03-2021 15:02:28 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8100, 13.1160 at 11 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 3 4957 4957
Preci PG 10 724 5681
Castelsantangelo sul Nera MC 10 281 5962
Cascia PG 13 3217 9179
Visso MC 14 1107 10286
Ussita MC 15 444 10730
Arquata del Tronto AP 15 1178 11908
Cerreto di Spoleto PG 16 1075 12983
Accumoli RI 17 667 13650
Sellano PG 18 1079 14729
Montegallo AP 18 523 15252
Poggiodomo PG 18 117 15369

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km E of Foligno (57155 inhabitants)
47 Km NE of Terni (111501 inhabitants)
51 Km W of Teramo (54892 inhabitants)
56 Km NW of L'Aquila (69753 inhabitants)
68 Km E of Perugia (166134 inhabitants)
91 Km W of Montesilvano (53738 inhabitants)
93 Km E of Viterbo (67173 inhabitants)
96 Km NE of Guidonia Montecelio (88673 inhabitants)
96 Km SW of Ancona (100861 inhabitants)
98 Km N of Tivoli (56533 inhabitants)
98 Km W of Pescara (121014 inhabitants)
100 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 1.3 2021-03-06
14:02:28		 42.8103 13.1157 11 2021-07-12
16:55:14		 Bollettino Sismico Italiano INGV 91105581
Reviewed
Rev100 		ML 1.3 2021-03-06
14:02:28		 42.8122 13.11 11 2021-03-06
14:10:50		 Sala Sismica INGV-Roma 87822261
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-03-06 14:02:28 ± 0.03
Latitude 42.8103 ± 0.0018
Longitude 13.1157 ± 0.0037
Depth (km) 11 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 91105581

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 249
Semi-minor axis of confidence ellipse (meter) 90
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 248
Circular confidence region, given by single value of horizontal uncertainty (meter) 250.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 88
Number of associated phases, regardless of their use for origin computation 31
Number of defining phases 31
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.12
Epicentral distance of station closest to the epicenter (degree) 0.02338
Epicentral distance of station farthest from the epicenter (degree) 0.51891
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 16
Magnitudes information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 91105581
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-06-11 16:02:08

ML:1.3

Field Value
Value 1.3
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 87822261
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-03-06 14:10:50
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.TERO.HHZ. 2021-03-06T14:02:42.55 0.6 undecidable manual S 117 44.9217 50 -0.16 46
IV.RM33.EHZ. 2021-03-06T14:02:40.03 0.6 undecidable manual S 166 34.4433 50 0.13 46
IV.CSP1.EHZ. 2021-03-06T14:02:39.34 0.6 undecidable manual S 13 32.0457 50 0.06 47
IV.CESI.HHZ. 2021-03-06T14:02:38.02 0.6 undecidable manual S 322 27.5502 50 -0.06 48
IV.EL6.EHZ. 2021-03-06T14:02:38.60 0.3 undecidable manual P 359 57.5979 50 0.06 68
IV.FDMO.HHZ. 2021-03-06T14:02:37.32 0.6 undecidable manual S 355 25.1526 50 -0.12 47
IV.T1299.HNN. 2021-03-06T14:02:37.23 0.6 undecidable manual S 145 23.754 50 0.16 47
IV.SMA1.EHZ. 2021-03-06T14:02:37.71 0.6 undecidable manual S 138 26.8509 50 -0.17 47
IV.GAVE.HNZ. 2021-03-06T14:02:36.69 0.6 undecidable manual S 234 22.2555 50 0.02 48
IV.TERO.HHZ. 2021-03-06T14:02:36.47 0.3 undecidable manual P 117 44.9217 50 -0.12 69
IT.MTCL.HGZ. 2021-03-06T14:02:36.47 0.6 undecidable manual S 335 22.4553 50 -0.24 46
IV.LNSS.HHZ. 2021-03-06T14:02:36.91 0.6 undecidable manual S 195 23.8539 50 -0.17 47
IV.MTRA.EHE. 2021-03-06T14:02:36.97 0.6 undecidable manual S 104 23.6541 50 -0.06 48
IV.FEMA.HNZ. 2021-03-06T14:02:35.28 0.6 undecidable manual S 342 17.6712 50 -0.15 48
IV.MMO1.EHZ. 2021-03-06T14:02:35.83 0.6 undecidable manual S 60 19.7691 50 -0.18 47
IV.MC2.EHZ. 2021-03-06T14:02:34.32 0.3 undecidable manual S 28 12.6762 131 0.28 71
IV.CSP1.EHZ. 2021-03-06T14:02:34.61 0.1 undecidable manual P 13 32.0457 50 0 95
IV.RM33.EHZ. 2021-03-06T14:02:34.81 0.3 undecidable manual P 166 34.4433 50 -0.16 69
IV.T1299.HNN. 2021-03-06T14:02:33.46 0.1 undecidable manual P 145 23.754 50 0.12 94
IV.SMA1.EHZ. 2021-03-06T14:02:33.65 0.3 undecidable manual P 138 26.8509 50 -0.15 70
IV.MTRA.EHE. 2021-03-06T14:02:33.28 0.3 undecidable manual P 104 23.6541 50 -0.03 73
IV.GAVE.HNZ. 2021-03-06T14:02:33.40 0.3 undecidable manual P 234 22.2555 50 0.29 69
IV.CESI.HHZ. 2021-03-06T14:02:33.94 0.1 undecidable manual P 322 27.5502 50 0.03 96
IT.MTCL.HGZ. 2021-03-06T14:02:33.04 0.3 undecidable manual P 335 22.4553 50 -0.09 72
IV.FDMO.HHZ. 2021-03-06T14:02:33.49 0.1 undecidable manual P 355 25.1526 50 -0.06 96
IV.LNSS.HHZ. 2021-03-06T14:02:33.29 0.3 undecidable manual P 195 23.8539 50 -0.05 72
IV.MMO1.EHZ. 2021-03-06T14:02:32.75 0.1 undecidable manual P 60 19.7691 50 0.03 97
IV.FEMA.HNZ. 2021-03-06T14:02:32.43 0.3 undecidable manual P 342 17.6712 50 0.04 73
IV.NRCA.HHZ. 2021-03-06T14:02:31.71 0.6 undecidable manual S 358 2.5974 167 -0.42 45
IV.MC2.EHZ. 2021-03-06T14:02:31.77 0.1 undecidable manual P 28 12.6762 131 0.18 96
IV.NRCA.HHZ. 2021-03-06T14:02:30.50 0.1 undecidable manual P 358 2.5974 167 0.02 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:1.8 0.0011897476500000001 0.1856 AML other m 2021-03-06T14:02:31.88
IV.NRCA.HHN. ML:2.0 0.001660424 0.16 AML other m 2021-03-06T14:02:31.87
IV.FDMO.HHN. ML:1.0 0.00006477167 0.2432 AML other m 2021-03-06T14:02:37.50
IV.LNSS.HHE. ML:1.2 0.00008985923 0.256 AML other m 2021-03-06T14:02:37.96
IV.LNSS.HHN. ML:1.3 0.00011141220499999999 0.16 AML other m 2021-03-06T14:02:38.24
IV.CESI.HHE. ML:1.2 0.00009119043 0.1216 AML other m 2021-03-06T14:02:38.25
IV.CESI.HHN. ML:1.3 0.000093564015 0.2048 AML other m 2021-03-06T14:02:38.59
IV.FDMO.HHE. ML:0.9 0.000052060145 0.16 AML other m 2021-03-06T14:02:38.63
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