Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 06-02-2020 and time 18:03:17 (Italy) in region 4 km E Norcia (PG)

A magnitude ML 1.5 earthquake occured in region: 4 km E Norcia (PG), on

  • 06-02-2020 17:03:17 (UTC)
  • 06-02-2020 18:03:17 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8060, 13.1350 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
Castelsantangelo sul Nera MC 10 281 5238
Preci PG 11 724 5962
Arquata del Tronto AP 14 1178 7140
Cascia PG 14 3217 10357
Visso MC 15 1107 11464
Accumoli RI 15 667 12131
Ussita MC 16 444 12575
Montegallo AP 17 523 13098
Cerreto di Spoleto PG 18 1075 14173
Montemonaco AP 19 604 14777
Poggiodomo PG 19 117 14894
Sellano PG 19 1079 15973

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km E of Foligno (57155 inhabitants)
48 Km NE of Terni (111501 inhabitants)
49 Km W of Teramo (54892 inhabitants)
55 Km NW of L'Aquila (69753 inhabitants)
69 Km E of Perugia (166134 inhabitants)
89 Km W of Montesilvano (53738 inhabitants)
95 Km E of Viterbo (67173 inhabitants)
96 Km SW of Ancona (100861 inhabitants)
96 Km NE of Guidonia Montecelio (88673 inhabitants)
96 Km W of Pescara (121014 inhabitants)
98 Km N of Tivoli (56533 inhabitants)
99 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 1.5 2020-02-06
17:03:17		 42.8058 13.1353 10 2020-07-18
21:08:29		 Bollettino Sismico Italiano INGV 77621441
Reviewed
Rev100 		ML 1.5 2020-02-06
17:03:17		 42.8058 13.1402 10 2020-02-06
17:11:00		 Sala Sismica INGV-Roma 76297341
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-02-06 17:03:17 ± 0.06
Latitude 42.8058 ± 0.0045
Longitude 13.1353 ± 0.0049
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 77621441

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 439
Semi-minor axis of confidence ellipse (meter) 406
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 159
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) 83
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 22
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.25
Epicentral distance of station closest to the epicenter (degree) 0.03148
Epicentral distance of station farthest from the epicenter (degree) 0.52341
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 77621441
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-03-27 16:00:39

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 76297341
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-02-06 17:11:00
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.TERO.HHZ. 2020-02-06T17:03:31.56 0.6 undecidable manual S 118 43.2234 50 -0.29 45
IV.MF5.EHZ. 2020-02-06T17:03:29.83 0.6 undecidable manual S 52 33.2445 50 0.66 41
IV.CSP1.EHZ. 2020-02-06T17:03:28.85 0.6 undecidable manual S 10 32.2455 50 -0.05 48
IV.EL6.EHZ. 2020-02-06T17:03:28.70 0.1 undecidable manual P 357 58.0974 50 0.55 82
IV.CESI.HHZ. 2020-02-06T17:03:27.55 0.1 undecidable manual S 320 28.9488 50 -0.48 88
IV.FDMO.HHZ. 2020-02-06T17:03:27.09 0.3 undecidable manual S 351 25.8519 50 -0.12 72
IV.LNSS.HHZ. 2020-02-06T17:03:26.74 0.3 undecidable manual S 199 23.8539 50 0.08 73
IV.GAVE.EHZ. 2020-02-06T17:03:26.70 0.3 undecidable manual S 237 23.3544 114 0.18 71
IV.MTRA.EHZ. 2020-02-06T17:03:25.96 0.3 undecidable manual S 104 21.9669 115 -0.12 72
IV.TERO.HHZ. 2020-02-06T17:03:25.52 0.6 undecidable manual P 118 43.2234 50 -0.34 44
IV.CSP1.EHZ. 2020-02-06T17:03:24.10 0.1 undecidable manual P 10 32.2455 50 -0.06 96
IV.MMO1.EHZ. 2020-02-06T17:03:24.96 0.3 undecidable manual S 56 18.6702 119 -0.12 73
IV.MF5.EHZ. 2020-02-06T17:03:24.80 0.3 undecidable manual P 52 33.2445 50 0.49 66
IV.FDMO.HHZ. 2020-02-06T17:03:23.11 0.1 undecidable manual P 351 25.8519 50 -0.07 97
IV.CESI.HHZ. 2020-02-06T17:03:23.59 0.1 undecidable manual P 320 28.9488 50 -0.07 96
IV.MTRA.EHZ. 2020-02-06T17:03:22.36 0.1 undecidable manual P 104 21.9669 115 -0.17 96
IV.LNSS.HHZ. 2020-02-06T17:03:22.86 0.1 undecidable manual P 199 23.8539 50 0 98
IV.GAVE.EHZ. 2020-02-06T17:03:22.87 0.1 undecidable manual P 237 23.3544 114 0.09 97
IV.MMO1.EHZ. 2020-02-06T17:03:21.83 0.1 undecidable manual P 56 18.6702 119 -0.12 97
IV.MC2.EHZ. 2020-02-06T17:03:21.19 0.1 undecidable manual P 20 12.4764 129 0.28 95
IV.NRCA.HHZ. 2020-02-06T17:03:21.19 0.3 undecidable manual S 331 3.4965 161 -0.25 73
IV.NRCA.HHZ. 2020-02-06T17:03:19.94 0.1 undecidable manual P 331 3.4965 161 0.09 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:1.8 0.0011068918500000001 0.128 AML other m 2020-02-06T17:03:21.27
IV.NRCA.HNN. ML:1.8 0.00106920715 0.1152 AML other m 2020-02-06T17:03:21.29
IV.NRCA.HNE. ML:1.4 0.00042300414000000003 0.1024 AML other m 2020-02-06T17:03:21.48
IV.NRCA.HHE. ML:1.4 0.00046340295 0.1024 AML other m 2020-02-06T17:03:21.57
IV.GAVE.EHE. ML:1.2 0.00009126223499999999 0.2176 AML other m 2020-02-06T17:03:26.80
IV.LNSS.HHE. ML:1.4 0.00017748649999999998 0.2816 AML other m 2020-02-06T17:03:26.98
IV.LNSS.HHN. ML:1.5 0.00020488635 0.1792 AML other m 2020-02-06T17:03:27.02
IV.GAVE.EHN. ML:1.3 0.00011968825 0.1792 AML other m 2020-02-06T17:03:27.29
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