Earthquake with magnitude of ML 1.3 on date 02-09-2021 and time 10:46:32 (Italy) in region 4 km E Norcia (PG)

A magnitude ML 1.3 earthquake occured in region: 4 km E Norcia (PG), on

  • 02-09-2021 08:46:32 (UTC)
  • 02-09-2021 10:46:32 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7990, 13.1370 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.

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 11 281 5238
Preci PG 12 724 5962
Arquata del Tronto AP 13 1178 7140
Cascia PG 13 3217 10357
Accumoli RI 15 667 11024
Visso MC 15 1107 12131
Ussita MC 16 444 12575
Montegallo AP 17 523 13098
Cerreto di Spoleto PG 18 1075 14173
Poggiodomo PG 19 117 14290
Montemonaco AP 19 604 14894
Sellano PG 20 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)
54 Km NW of L'Aquila (69753 inhabitants)
70 Km E of Perugia (166134 inhabitants)
89 Km W of Montesilvano (53738 inhabitants)
94 Km E of Viterbo (67173 inhabitants)
95 Km NE of Guidonia Montecelio (88673 inhabitants)
96 Km W of Pescara (121014 inhabitants)
96 Km SW of Ancona (100861 inhabitants)
97 Km N of Tivoli (56533 inhabitants)
98 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
Reviewed
Rev100
ML 1.3 2021-09-02
08:46:32
42.799 13.1367 11 2021-09-02
08:51:58
Sala Sismica INGV-Roma 94951931
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-02 08:46:32 ± 0.05
Latitude 42.7990 ± 0.0045
Longitude 13.1367 ± 0.0049
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 94951931

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 402
Semi-minor axis of confidence ellipse (meter) 342
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 138
Circular confidence region, given by single value of horizontal uncertainty (meter) 400.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 96
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 16
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) 0.03867
Epicentral distance of station farthest from the epicenter (degree) 0.38581
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 94951931
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-02 08:51:58
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.LNSS.HHZ. 2021-09-02T08:46:41.03 0.6 undecidable manual S 200 23.1546 50 -0.02 69
IV.MTRA.EHZ. 2021-09-02T08:46:40.35 0.6 undecidable manual S 102 21.6672 50 -0.32 65
IV.GAVE.EHZ. 2021-09-02T08:46:40.91 0.6 undecidable manual S 239 23.0547 50 -0.12 68
IV.TERO.HHZ. 2021-09-02T08:46:40.48 0.3 negative manual P 117 42.8238 50 0.05 100
IV.PF6.EHN. 2021-09-02T08:46:39.50 0.6 undecidable manual P 7 37.9287 50 -0.17 66
IV.MMO1.EHZ. 2021-09-02T08:46:39.87 0.6 undecidable manual S 54 19.0698 50 -0.1 69
IV.CSP1.EHN. 2021-09-02T08:46:38.86 0.6 undecidable manual P 10 32.9448 50 -0.05 68
IV.MC2.EHZ. 2021-09-02T08:46:38.56 0.6 undecidable manual S 19 13.1757 130 0.21 68
IV.FDMO.HHZ. 2021-09-02T08:46:37.81 0.6 positive manual P 351 26.6511 50 -0.13 68
IV.LNSS.HHZ. 2021-09-02T08:46:37.41 0.6 undecidable manual P 200 23.1546 50 0.01 69
IV.MTRA.EHZ. 2021-09-02T08:46:37.54 1.0 undecidable manual P 102 21.6672 50 0.37 32
IV.GAVE.EHZ. 2021-09-02T08:46:37.52 0.6 positive manual P 239 23.0547 50 0.14 68
IV.MC2.EHZ. 2021-09-02T08:46:36.00 0.6 positive manual P 19 13.1757 130 0.17 69
IV.MMO1.EHZ. 2021-09-02T08:46:36.73 1.0 undecidable manual P 54 19.0698 50 -0.04 35
IV.NRCA.HNZ. 2021-09-02T08:46:36.31 0.6 undecidable manual S 335 4.2957 159 -0.17 68
IV.NRCA.HNZ. 2021-09-02T08:46:34.87 1.0 undecidable manual P 335 4.2957 159 0.12 35
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHE. ML:1.7 0.0007989999999999999 0.16 AML other m 2021-09-02T08:46:36.35
IV.NRCA.HHN. ML:1.5 0.0004856261 0.0768 AML other m 2021-09-02T08:46:36.56
IV.GAVE.EHN. ML:1.0 0.000066306295 0.1216 AML other m 2021-09-02T08:46:41.67
IV.GAVE.EHE. ML:1.2 0.00009240000000000001 1.72 AML other m 2021-09-02T08:46:41.99
IV.LNSS.HHN. ML:1.0 0.00006418268000000001 0.1152 AML other m 2021-09-02T08:46:42.17
IV.LNSS.HHE. ML:1.0 0.000068203115 0.1984 AML other m 2021-09-02T08:46:41.79
IV.NRCA.HNE. ML:1.6 0.0007270325 0.1472 AML other m 2021-09-02T08:46:36.36
IV.NRCA.HNN. ML:1.4 0.0004310698 0.0704 AML other m 2021-09-02T08:46:36.53
IV.GAVE.HNE. ML:1.4 0.00014519165 1.1328 AML other m 2021-09-02T08:46:43.49
IV.GAVE.HNN. ML:1.3 0.00013717970000000002 1.4976 AML other m 2021-09-02T08:46:41.42
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