Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 05-02-2021 and time 00:32:02 (UTC) in region 6 km E Norcia (PG)

A magnitude ML 1.0 earthquake occured in region: 6 km E Norcia (PG), on

  • 05-02-2021 00:32:02 (UTC)
  • 05-02-2021 01:32:02 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 42.8150, 13.1660 at 11 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 6 4957 4957
Castelsantangelo sul Nera MC 9 281 5238
Arquata del Tronto AP 12 1178 6416
Preci PG 13 724 7140
Montegallo AP 14 523 7663
Visso MC 14 1107 8770
Ussita MC 15 444 9214
Accumoli RI 15 667 9881
Montemonaco AP 16 604 10485
Cascia PG 16 3217 13702

Municipalities with at least 50000 inhabitants

An earthquake occurred to
41 Km E of Foligno (57155 inhabitants)
47 Km W of Teramo (54892 inhabitants)
51 Km NE of Terni (111501 inhabitants)
55 Km NW of L'Aquila (69753 inhabitants)
71 Km E of Perugia (166134 inhabitants)
87 Km W of Montesilvano (53738 inhabitants)
94 Km SW of Ancona (100861 inhabitants)
94 Km W of Pescara (121014 inhabitants)
97 Km NW of Chieti (51815 inhabitants)
97 Km E of Viterbo (67173 inhabitants)
97 Km NE of Guidonia Montecelio (88673 inhabitants)
99 Km NE of Tivoli (56533 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 1.0 2021-02-05
00:32:02		 42.815 13.1663 11 2021-02-05
00:41:43		 Sala Sismica INGV-Roma 86839211
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-02-05 00:32:02 ± 0.08
Latitude 42.8150 ± 0.0036
Longitude 13.1663 ± 0.0061
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 86839211

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 536
Semi-minor axis of confidence ellipse (meter) 365
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 80
Circular confidence region, given by single value of horizontal uncertainty (meter) 540.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 57
Number of associated phases, regardless of their use for origin computation 31
Number of defining phases 27
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) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.30757
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 14
Magnitude information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.1
Num. used stations 12
Type of magnitude ML
Reference to an origin 86839211
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-02-05 00:41:43
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.EL6.EHZ. 2021-02-05T00:32:21.98 3.0 undecidable manual S 0.49 0
IV.RM33.EHZ. 2021-02-05T00:32:14.02 0.6 undecidable manual S 173 34.1436 91 -0.12 48
IV.CESI.HHZ. 2021-02-05T00:32:13.08 0.3 undecidable manual S 315 29.9478 91 0.08 73
IV.GUMA.HHZ. 2021-02-05T00:32:13.69 0.3 undecidable manual S 26 30.747 91 0.48 68
IV.CSP1.EHZ. 2021-02-05T00:32:13.34 0.6 undecidable manual S 6 30.8469 91 0.09 49
IV.GAVE.EHZ. 2021-02-05T00:32:11.92 0.6 undecidable manual S 239 26.0517 91 -0.04 50
IV.MNTT.EHZ. 2021-02-05T00:32:11.58 3.0 positive manual P 0.9 0
IT.MTCL.HGE. 2021-02-05T00:32:11.18 0.3 undecidable manual S 326 24.0537 91 -0.25 72
IV.LNSS.HHZ. 2021-02-05T00:32:11.79 0.6 undecidable manual S 204 25.6521 91 -0.08 50
IV.ASSB.HHZ. 2021-02-05T00:32:11.46 3.0 positive manual P -0.08 0
IV.SMA1.EHZ. 2021-02-05T00:32:11.25 0.6 undecidable manual S 146 24.6531 91 -0.35 47
IV.FDMO.HHZ. 2021-02-05T00:32:11.42 0.3 undecidable manual S 345 25.3524 91 -0.37 70
IV.TERO.HHZ. 2021-02-05T00:32:10.01 3.0 positive manual P -0.14 0
IV.MMO1.EHZ. 2021-02-05T00:32:09.07 0.6 undecidable manual S 54 16.0728 94 -0.23 49
IV.MTRA.EHZ. 2021-02-05T00:32:09.91 0.6 undecidable manual S 109 19.869 92 -0.4 47
IV.RM33.EHZ. 2021-02-05T00:32:09.16 1.0 undecidable manual P 173 34.1436 91 -0.08 24
IV.GUMA.HHZ. 2021-02-05T00:32:09.19 0.1 undecidable manual P 26 30.747 91 0.48 90
IV.LNSS.HHZ. 2021-02-05T00:32:08.44 0.1 undecidable manual P 204 25.6521 91 0.51 89
IV.CSP1.EHZ. 2021-02-05T00:32:08.82 1.0 positive manual P 6 30.8469 91 0.09 24
IV.MC2.EHN. 2021-02-05T00:32:08.01 0.3 undecidable manual S 10 10.878 117 0.05 75
IV.GAVE.EHZ. 2021-02-05T00:32:08.13 0.6 negative manual P 239 26.0517 91 0.15 48
IV.CESI.HHZ. 2021-02-05T00:32:08.55 0.1 undecidable manual P 315 29.9478 91 -0.04 99
IV.SMA1.EHZ. 2021-02-05T00:32:07.57 0.6 negative manual P 146 24.6531 91 -0.21 48
IV.FDMO.HHZ. 2021-02-05T00:32:07.82 1.0 undecidable manual P 345 25.3524 91 -0.07 25
IT.MTCL.HGE. 2021-02-05T00:32:07.53 0.1 undecidable manual P 326 24.0537 91 -0.15 98
IV.FEMA.HNE. 2021-02-05T00:32:06.18 0.1 undecidable manual P 330 18.87 92 -0.7 85
IV.NRCA.HNE. 2021-02-05T00:32:06.62 0.6 undecidable manual S 296 4.6953 150 -0.16 52
IV.MMO1.EHZ. 2021-02-05T00:32:06.39 1.0 undecidable manual P 54 16.0728 94 -0.06 25
IV.MTRA.EHZ. 2021-02-05T00:32:06.86 0.6 positive manual P 109 19.869 92 -0.17 49
IV.NRCA.HNE. 2021-02-05T00:32:05.11 0.1 undecidable manual P 296 4.6953 150 0.12 100
IV.MC2.EHN. 2021-02-05T00:32:05.84 0.1 undecidable manual P 10 10.878 117 0.16 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTRA.EHN. ML:1.0 0.00006984999999999999 0.4 AML other m 2021-02-05T00:32:10.51
IV.MTRA.EHE. ML:1.2 0.0001075 0.42 AML other m 2021-02-05T00:32:10.57
IV.SMA1.EHE. ML:1.0 0.00006379999999999999 0.26 AML other m 2021-02-05T00:32:11.50
IV.FDMO.HHN. ML:0.8 0.0000383 1.8 AML other m 2021-02-05T00:32:11.08
IV.LNSS.HHE. ML:1.1 0.0000713 0.22 AML other m 2021-02-05T00:32:12.08
IV.LNSS.HHN. ML:1.1 0.0000701 1 AML other m 2021-02-05T00:32:12.13
IV.FDMO.HHE. ML:0.7 0.0000288 0.86 AML other m 2021-02-05T00:32:12.85
IV.SMA1.EHN. ML:1.0 0.00005435 0.24 AML other m 2021-02-05T00:32:12.55
IV.CESI.HHE. ML:1.0 0.00004445 0.94 AML other m 2021-02-05T00:32:13.75
IV.CESI.HHN. ML:1.3 0.00008810000000000001 0.36 AML other m 2021-02-05T00:32:13.41
IV.TERO.HHN. ML:1.0 0.0000324 0.68 AML other m 2021-02-05T00:32:16.44
IV.TERO.HHE. ML:1.0 0.0000328 0.46 AML other m 2021-02-05T00:32:17.31
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