Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.5 on date 03-06-2021 and time 08:28:11 (UTC) in region 7 km E Norcia (PG)

A magnitude ML 0.5 earthquake occured in region: 7 km E Norcia (PG), on

  • 03-06-2021 08:28:11 (UTC)
  • 03-06-2021 10:28:11 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.7770, 13.1780 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 7 4957 4957
Arquata del Tronto AP 10 1178 6135
Accumoli RI 11 667 6802
Castelsantangelo sul Nera MC 13 281 7083
Montegallo AP 15 523 7606
Cascia PG 15 3217 10823
Preci PG 16 724 11547
Cittareale RI 18 482 12029
Montemonaco AP 18 604 12633
Visso MC 19 1107 13740
Amatrice RI 19 2657 16397
Ussita MC 19 444 16841
Acquasanta Terme AP 19 2916 19757

Municipalities with at least 50000 inhabitants

An earthquake occurred to
44 Km E of Foligno (57155 inhabitants)
45 Km W of Teramo (54892 inhabitants)
50 Km E of Terni (111501 inhabitants)
51 Km NW of L'Aquila (69753 inhabitants)
74 Km SE of Perugia (166134 inhabitants)
85 Km W of Montesilvano (53738 inhabitants)
92 Km W of Pescara (121014 inhabitants)
94 Km NE of Guidonia Montecelio (88673 inhabitants)
94 Km NW of Chieti (51815 inhabitants)
96 Km NE of Tivoli (56533 inhabitants)
96 Km E of Viterbo (67173 inhabitants)
98 Km S 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
Reviewed
Rev100 		ML 0.5 2021-06-03
08:28:11		 42.7772 13.1782 11 2021-06-03
08:34:07		 Sala Sismica INGV-Roma 90750211
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-06-03 08:28:11 ± 0.07
Latitude 42.7772 ± 0.0063
Longitude 13.1782 ± 0.0086
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 90750211

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 793
Semi-minor axis of confidence ellipse (meter) 453
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 322
Circular confidence region, given by single value of horizontal uncertainty (meter) 790.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 168
Number of associated phases, regardless of their use for origin computation 30
Number of defining phases 10
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.14
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.31476
Number of stations at which the event was observed 26
Number of stations from which data was used for origin computation 6
Magnitude information

ML:0.5

Field Value
Value 0.5
Uncertainty 0.3
Num. used stations 6
Type of magnitude ML
Reference to an origin 90750211
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-06-03 08:34:07
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ACATE.EHZ. 2021-06-03T08:29:54.16 3.0 positive manual Pg 17.709999 0
IV.CMDO.HHZ. 2021-06-03T08:29:43.29 3.0 negative manual Pg 14.25 0
IV.QLNO.HHZ. 2021-06-03T08:29:28.21 3.0 undecidable manual Sn -8.16 0
MN.CEL.HHZ. 2021-06-03T08:29:24.78 3.0 undecidable manual Pn -1.03 0
IV.MCPD.HHZ. 2021-06-03T08:29:23.26 3.0 positive manual Pn 0.57 0
MN.TRI.HHZ. 2021-06-03T08:29:22.00 3.0 undecidable manual Sn -2.96 0
MN.CLTB.HHZ. 2021-06-03T08:29:22.30 3.0 negative manual Pn -4.32 0
IV.IFOR.HHZ. 2021-06-03T08:29:13.53 3.0 undecidable manual Sn -2.19 0
IV.MILN.HHZ. 2021-06-03T08:29:10.18 3.0 negative manual Pg 10.83 0
IV.ZONE.HHZ. 2021-06-03T08:29:05.93 3.0 undecidable manual Pg 8.92 0
OT.OT11.EHZ. 2021-06-03T08:28:51.26 3.0 positive manual Pn 4.22 0
IV.VVLD.HHZ. 2021-06-03T08:28:48.19 3.0 undecidable manual Sn -0.62 0
IV.CADC.HNZ. 2021-06-03T08:28:46.13 3.0 undecidable manual Pn -7.33 0
IV.LAV9.HHZ. 2021-06-03T08:28:45.01 3.0 undecidable manual Sn -2.3 0
IV.RIBO.EHZ.01 2021-06-03T08:28:43.08 3.0 undecidable manual Sg 1.13 0
IV.NDIM.HNZ. 2021-06-03T08:28:41.31 3.0 negative manual Pg -1.49 0
IV.FIR.HHZ. 2021-06-03T08:28:39.49 3.0 undecidable manual S -5.53 0
IV.LRP.EHZ. 2021-06-03T08:28:33.90 3.0 negative manual Pn 0.53 0
IV.RMP.HHZ. 2021-06-03T08:28:27.27 3.0 negative manual Pn -1.06 0
IV.LNSS.HHZ. 2021-06-03T08:28:20.28 0.3 undecidable manual S 210 22.3554 91 0.16 72
IV.MMO1.EHZ. 2021-06-03T08:28:19.04 0.3 undecidable manual S 42 18.1707 91 0.04 73
IV.CSP1.EHZ. 2021-06-03T08:28:18.46 0.6 undecidable manual P 4 34.9428 90 -0.04 46
IV.MC2.EHZ. 2021-06-03T08:28:18.39 0.3 undecidable manual S 3 14.874 93 0.26 71
IV.FDMO.HHZ. 2021-06-03T08:28:17.51 0.6 undecidable manual P 346 29.6481 90 -0.18 46
IV.NRCA.HNN. 2021-06-03T08:28:16.33 0.3 undecidable manual S 320 8.0808 130 -0.15 73
IV.LNSS.HHZ. 2021-06-03T08:28:16.39 0.3 undecidable manual P 210 22.3554 91 -0.17 70
IV.MC2.EHZ. 2021-06-03T08:28:15.52 0.3 undecidable manual P 3 14.874 93 0.11 73
IV.MMO1.EHZ. 2021-06-03T08:28:15.93 0.1 undecidable manual P 42 18.1707 91 0.02 97
IV.NRCA.HNN. 2021-06-03T08:28:14.48 0.1 undecidable manual P 320 8.0808 130 0.03 100
IV.ASSB.HHZ. 2021-06-03T08:28:13.13 3.0 positive manual P -0.56 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ASSB.HHE. ML:0.6 0.000009411322 0.256 AML other m 2021-06-03T08:28:14.83
IV.ASSB.HHN. ML:0.6 0.000010648092 0.064 AML other m 2021-06-03T08:28:13.80
IV.FDMO.HHE. ML:0.0 0.0000061896535 0.1408 AML other m 2021-06-03T08:28:23.65
IV.FDMO.HHN. ML:0.0 0.0000064418735 0.2048 AML other m 2021-06-03T08:28:23.26
IV.CSP1.EHE. ML:0.7 0.000021167776 0.3008 AML other m 2021-06-03T08:28:24.33
IV.CSP1.EHN. ML:0.7 0.000021582129999999997 0.3008 AML other m 2021-06-03T08:28:24.94
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