Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 06-06-2021 and time 04:50:48 (Italy) in region 1 km W Castelsantangelo sul Nera (MC)

A magnitude ML 1.1 earthquake occured in region: 1 km W Castelsantangelo sul Nera (MC), on

  • 06-06-2021 02:50:48 (UTC)
  • 06-06-2021 04:50:48 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9010, 13.1380 at 10 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
Castelsantangelo sul Nera MC 2 281 281
Ussita MC 5 444 725
Visso MC 5 1107 1832
Preci PG 8 724 2556
Norcia PG 13 4957 7513
Bolognola MC 13 142 7655
Acquacanina MC 15 121 7776
Monte Cavallo MC 15 145 7921
Fiastra MC 15 559 8480
Montemonaco AP 16 604 9084
Fiordimonte MC 16 202 9286
Sellano PG 17 1079 10365
Montegallo AP 17 523 10888
Montefortino FM 17 1178 12066
Pieve Torina MC 18 1458 13524
Pievebovigliana MC 19 866 14390
Arquata del Tronto AP 19 1178 15568
Amandola FM 20 3629 19197

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km E of Foligno (57155 inhabitants)
54 Km NW of Teramo (54892 inhabitants)
55 Km NE of Terni (111501 inhabitants)
65 Km NW of L'Aquila (69753 inhabitants)
65 Km E of Perugia (166134 inhabitants)
86 Km SW of Ancona (100861 inhabitants)
93 Km W of Montesilvano (53738 inhabitants)
100 Km NE of Viterbo (67173 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 1.1 2021-06-06
02:50:48		 42.901 13.1375 11 2021-06-06
03:12:36		 Sala Sismica INGV-Roma 90840881
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-06-06 02:50:48 ± 0.12
Latitude 42.9010 ± 0.0063
Longitude 13.1375 ± 0.0074
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 90840881

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 771
Semi-minor axis of confidence ellipse (meter) 489
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 210
Circular confidence region, given by single value of horizontal uncertainty (meter) 770.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 107
Number of associated phases, regardless of their use for origin computation 22
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.22
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.25091
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.1
Num. used stations 2
Type of magnitude ML
Reference to an origin 90840881
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-06-06 03:12:36
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.EMPL.HHZ. 2021-06-06T02:51:47.31 3.0 positive manual Pg 7.46 0
OT.OT12.EHZ. 2021-06-06T02:51:27.66 3.0 undecidable manual Sn -0.08 0
IV.MF5.EHZ. 2021-06-06T02:50:59.12 0.6 undecidable manual S 70 27.8499 50 0.71 41
IV.PAOL.HHZ. 2021-06-06T02:50:57.70 3.0 positive manual Pn 0.46 0
IV.PF6.EHN. 2021-06-06T02:50:57.79 0.6 undecidable manual S 10 26.6511 50 -0.3 45
IV.CESI.HHZ. 2021-06-06T02:50:57.05 0.6 undecidable manual S 301 22.1556 50 0.17 47
IV.FDMO.HHZ. 2021-06-06T02:50:54.80 0.6 undecidable manual S 345 15.5733 124 -0.1 49
IV.MMO1.EHZ. 2021-06-06T02:50:54.33 0.6 undecidable manual S 91 15.3735 124 -0.52 44
IV.MF5.EHZ. 2021-06-06T02:50:54.48 1.0 undecidable manual P 70 27.8499 50 0.31 23
IT.MTCL.HGE. 2021-06-06T02:50:54.84 0.6 undecidable manual S 313 15.2736 125 0.04 49
IV.CESI.HHZ. 2021-06-06T02:50:53.28 0.1 undecidable manual P 301 22.1556 50 -0.01 98
IV.MNTT.EHZ. 2021-06-06T02:50:53.69 3.0 positive manual Pn 0.8 0
IV.PF6.EHN. 2021-06-06T02:50:53.71 0.1 undecidable manual P 10 26.6511 50 -0.28 91
IV.FDMO.HHZ. 2021-06-06T02:50:52.20 1.0 undecidable manual P 345 15.5733 124 0.06 24
IT.MTCL.HGE. 2021-06-06T02:50:52.15 0.1 undecidable manual P 313 15.2736 125 0.06 97
IV.CESX.HHZ. 2021-06-06T02:50:52.72 3.0 undecidable manual P 0.94 0
IV.VAGA.HHZ. 2021-06-06T02:50:52.01 3.0 undecidable manual P -0.08 0
IV.NRCA.HHZ. 2021-06-06T02:50:52.66 0.6 undecidable manual S 194 7.6812 144 -0.24 48
IV.MC2.EHE. 2021-06-06T02:50:52.64 0.6 undecidable manual S 75 4.2957 158 0.31 47
IV.NRCA.HHZ. 2021-06-06T02:50:51.00 0.1 undecidable manual P 194 7.6812 144 0.01 100
IV.MMO1.EHZ. 2021-06-06T02:50:51.92 0.6 undecidable manual P 91 15.3735 124 -0.19 47
IV.MC2.EHE. 2021-06-06T02:50:50.86 0.1 undecidable manual P 75 4.2957 158 0.2 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:1.2 0.00021200000000000003 0.08 AML other m 2021-06-06T02:50:52.72
IV.NRCA.HHE. ML:1.0 0.00013700000000000002 0.16 AML other m 2021-06-06T02:50:52.73
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