Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 06-02-2021 and time 01:15:05 (Italy) in region 4 km E Norcia (PG)

A magnitude ML 1.2 earthquake occured in region: 4 km E Norcia (PG), on

  • 06-02-2021 00:15:05 (UTC)
  • 06-02-2021 01:15:05 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.7800, 13.1450 at 10 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
Arquata del Tronto AP 13 1178 6135
Accumoli RI 13 667 6802
Cascia PG 13 3217 10019
Castelsantangelo sul Nera MC 13 281 10300
Preci PG 14 724 11024
Montegallo AP 17 523 11547
Visso MC 18 1107 12654
Cittareale RI 18 482 13136
Ussita MC 18 444 13580
Poggiodomo PG 19 117 13697
Cerreto di Spoleto PG 19 1075 14772

Municipalities with at least 50000 inhabitants

An earthquake occurred to
41 Km E of Foligno (57155 inhabitants)
47 Km NE of Terni (111501 inhabitants)
48 Km W of Teramo (54892 inhabitants)
52 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 E of Viterbo (67173 inhabitants)
94 Km W of Pescara (121014 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
Bulletin
Rev1000 		ML 1.2 2021-02-06
00:15:05		 42.7798 13.1447 10 2021-07-12
16:54:59		 Bollettino Sismico Italiano INGV 87500571
Reviewed
Rev100 		ML 1.2 2021-02-06
00:15:05		 42.7833 13.1367 9 2021-02-06
00:20:33		 Sala Sismica INGV-Roma 86867511
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-02-06 00:15:05 ± 0.03
Latitude 42.7798 ± 0.0018
Longitude 13.1447 ± 0.0025
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 87500571

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 237
Semi-minor axis of confidence ellipse (meter) 117
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 87
Circular confidence region, given by single value of horizontal uncertainty (meter) 240.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 48
Number of associated phases, regardless of their use for origin computation 47
Number of defining phases 47
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0.05846
Epicentral distance of station farthest from the epicenter (degree) 0.55038
Number of stations at which the event was observed 26
Number of stations from which data was used for origin computation 26
Magnitudes information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 20
Type of magnitude ML
Reference to an origin 87500571
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-04-07 09:02:09

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 20
Type of magnitude ML
Reference to an origin 86867511
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-02-06 00:20:33
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.EL6.EHZ. 2021-02-06T00:15:24.11 0.6 undecidable manual S 357 61.0944 50 -0.13 45
IV.CESX.HHZ. 2021-02-06T00:15:21.13 0.6 undecidable manual S 248 49.3173 50 0.03 47
IV.MOMA.HHZ. 2021-02-06T00:15:20.64 0.6 undecidable manual S 273 46.8198 50 0.19 46
IV.MML1.HNE. 2021-02-06T00:15:18.49 0.3 undecidable manual S 339 39.627 50 -0.02 72
IV.TERO.HHZ. 2021-02-06T00:15:18.76 0.3 undecidable manual S 115 41.3253 50 -0.21 69
IV.PF6.EHN. 2021-02-06T00:15:18.53 0.3 undecidable manual S 6 39.9267 50 -0.07 71
IV.CAMP.HHE. 2021-02-06T00:15:17.02 0.3 undecidable manual S 141 34.6431 50 -0.16 71
IV.GUMA.HHZ. 2021-02-06T00:15:17.71 0.3 undecidable manual S 26 34.9428 50 0.43 67
IV.MF5.EHZ. 2021-02-06T00:15:17.44 1.0 undecidable manual S 48 34.4433 50 0.3 23
IV.CSP1.EHZ. 2021-02-06T00:15:17.30 0.3 undecidable manual S 8 34.9428 50 0.03 73
IV.EL6.EHZ. 2021-02-06T00:15:16.19 0.6 undecidable manual P 357 61.0944 50 -0.04 46
IV.CESI.HHZ. 2021-02-06T00:15:16.21 0.6 undecidable manual S 322 31.6461 50 -0.19 47
IV.FDMO.HHZ. 2021-02-06T00:15:15.43 0.3 undecidable manual S 351 28.8489 50 -0.22 70
IV.RM33.EHZ. 2021-02-06T00:15:15.88 0.3 undecidable manual S 169 30.5472 50 -0.23 70
IV.MNTT.EHZ. 2021-02-06T00:15:14.60 0.3 undecidable manual P 49 48.2184 50 0.36 66
IV.ASSB.HHZ. 2021-02-06T00:15:14.27 0.3 undecidable manual P 307 49.1175 50 -0.11 70
IV.CESX.HHZ. 2021-02-06T00:15:14.79 0.6 undecidable manual P 248 49.3173 50 0.38 44
IV.MOMA.HHZ. 2021-02-06T00:15:14.12 0.3 undecidable manual P 273 46.8198 50 0.08 70
IV.GAVE.EHZ. 2021-02-06T00:15:13.93 0.3 undecidable manual S 245 22.5552 114 0.06 74
IV.FEMA.HNZ. 2021-02-06T00:15:13.24 0.3 undecidable manual S 339 21.6672 115 -0.32 70
IV.TERO.HHZ. 2021-02-06T00:15:13.00 0.3 undecidable manual P 115 41.3253 50 -0.18 69
IV.MTRA.HNZ. 2021-02-06T00:15:13.11 0.3 undecidable manual S 97 20.6682 116 -0.15 72
IV.SAP2.EHE. 2021-02-06T00:15:13.26 0.6 undecidable manual P 30 40.7259 50 0.16 47
IV.LNSS.HHZ. 2021-02-06T00:15:13.57 0.3 undecidable manual S 203 21.3675 115 0.08 73
IV.CSP1.EHZ. 2021-02-06T00:15:12.21 0.3 undecidable manual P 8 34.9428 50 0.01 73
IV.PF6.EHN. 2021-02-06T00:15:12.93 0.1 undecidable manual P 6 39.9267 50 -0.04 96
IV.GUMA.HHZ. 2021-02-06T00:15:12.48 0.3 undecidable manual P 26 34.9428 50 0.27 69
IV.MML1.HNE. 2021-02-06T00:15:12.56 0.3 undecidable manual P 339 39.627 50 -0.36 67
IV.T1299.HNZ. 2021-02-06T00:15:12.69 0.3 undecidable manual S 145 19.6692 117 -0.26 71
IV.MMO1.EHZ. 2021-02-06T00:15:12.77 0.3 undecidable manual S 48 19.869 117 -0.24 71
IV.MF5.EHZ. 2021-02-06T00:15:12.47 0.3 undecidable manual P 48 34.4433 50 0.34 68
IV.ARRO.EHZ. 2021-02-06T00:15:12.57 0.6 undecidable manual P 234 38.1285 50 -0.12 47
IV.CAMP.HHE. 2021-02-06T00:15:11.98 0.3 undecidable manual P 141 34.6431 50 -0.17 70
IV.MC2.EHZ. 2021-02-06T00:15:11.88 0.3 undecidable manual S 14 15.0738 124 0.32 71
IV.FDMO.HHZ. 2021-02-06T00:15:11.19 0.3 undecidable manual P 351 28.8489 50 -0.07 73
IV.CESI.HHZ. 2021-02-06T00:15:11.63 0.3 undecidable manual P 322 31.6461 50 -0.07 72
IV.RM33.EHZ. 2021-02-06T00:15:11.58 0.6 undecidable manual P 169 30.5472 50 0.05 48
IV.LNSS.HHZ. 2021-02-06T00:15:10.20 0.1 undecidable manual P 203 21.3675 115 0.18 96
IV.GAVE.EHZ. 2021-02-06T00:15:10.26 0.3 undecidable manual P 245 22.5552 114 0.02 74
IV.T1299.HNZ. 2021-02-06T00:15:10.07 0.3 undecidable manual P 145 19.6692 117 0.37 69
IV.SMA1.EHZ. 2021-02-06T00:15:10.31 0.3 undecidable manual P 137 22.755 114 0.05 74
IV.NRCA.HNZ. 2021-02-06T00:15:09.09 0.3 undecidable manual S 337 6.4935 147 -0.35 71
IV.MMO1.EHZ. 2021-02-06T00:15:09.74 0.3 undecidable manual P 48 19.869 117 0 75
IV.MTRA.HNZ. 2021-02-06T00:15:09.95 0.1 undecidable manual P 97 20.6682 116 0.07 98
IV.MC2.EHZ. 2021-02-06T00:15:09.17 0.3 undecidable manual P 14 15.0738 124 0.27 71
IV.FEMA.HNZ. 2021-02-06T00:15:09.78 0.6 undecidable manual P 339 21.6672 115 -0.28 47
IV.NRCA.HNZ. 2021-02-06T00:15:07.78 0.1 undecidable manual P 337 6.4935 147 0.1 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GAVE.HNE. ML:1.4 0.00018128955000000003 3.22 AML other m 2021-02-06T00:15:14.79
IV.GAVE.HNN. ML:1.5 0.00019303465 0.98 AML other m 2021-02-06T00:15:14.45
IV.SMA1.EHN. ML:1.1 0.0000799 1.44 AML other m 2021-02-06T00:15:15.02
IV.FDMO.HHN. ML:1.0 0.0000477 1.08 AML other m 2021-02-06T00:15:15.20
IV.SMA1.EHE. ML:1.1 0.0000791 0.5 AML other m 2021-02-06T00:15:16.50
IV.FDMO.HHE. ML:0.8 0.0000281 1.3 AML other m 2021-02-06T00:15:16.77
IV.CESI.HHE. ML:1.0 0.0000477 0.38 AML other m 2021-02-06T00:15:16.80
IV.CESI.HHN. ML:1.2 0.00007145 0.44 AML other m 2021-02-06T00:15:16.99
IV.RM33.EHN. ML:0.9 0.0000385 0.46 AML other m 2021-02-06T00:15:17.46
IV.RM33.EHE. ML:0.9 0.0000406 0.7 AML other m 2021-02-06T00:15:17.85
IV.CSP1.EHE. ML:1.4 0.00010795000000000001 0.56 AML other m 2021-02-06T00:15:18.84
IV.CSP1.EHN. ML:1.5 0.00013525 0.64 AML other m 2021-02-06T00:15:18.41
IV.GUMA.HHN. ML:1.5 0.0001235 0.48 AML other m 2021-02-06T00:15:19.42
IV.TERO.HHE. ML:0.9 0.0000259 0.5 AML other m 2021-02-06T00:15:19.64
IV.GUMA.HHE. ML:1.4 0.0001052 0.26 AML other m 2021-02-06T00:15:20.16
IV.TERO.HHN. ML:1.2 0.00004955 0.6 AML other m 2021-02-06T00:15:21.51
IV.MOMA.HHE. ML:1.2 0.000038400000000000005 0.9 AML other m 2021-02-06T00:15:22.18
IV.MOMA.HHN. ML:1.0 0.00002955 0.22 AML other m 2021-02-06T00:15:22.76
IV.ASSB.HHN. ML:1.0 0.000023650000000000002 1.02 AML other m 2021-02-06T00:15:23.19
IV.ASSB.HHE. ML:1.1 0.0000327 0.6 AML other m 2021-02-06T00:15:23.54
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