Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 17-09-2020 and time 03:53:07 (Italy) in region 4 km E Castelsantangelo sul Nera (MC)

A magnitude ML 1.0 earthquake occured in region: 4 km E Castelsantangelo sul Nera (MC), on

  • 17-09-2020 01:53:07 (UTC)
  • 17-09-2020 03:53:07 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9050, 13.2000 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
Castelsantangelo sul Nera MC 4 281 281
Ussita MC 7 444 725
Visso MC 10 1107 1832
Bolognola MC 10 142 1974
Montemonaco AP 10 604 2578
Montefortino FM 12 1178 3756
Montegallo AP 13 523 4279
Preci PG 13 724 5003
Acquacanina MC 14 121 5124
Fiastra MC 15 559 5683
Norcia PG 15 4957 10640
Amandola FM 15 3629 14269
Arquata del Tronto AP 17 1178 15447
Sarnano MC 17 3264 18711
Fiordimonte MC 17 202 18913
Comunanza AP 19 3166 22079
Monte Cavallo MC 19 145 22224
Pieve Torina MC 20 1458 23682
Pievebovigliana MC 20 866 24548

Municipalities with at least 50000 inhabitants

An earthquake occurred to
41 Km E of Foligno (57155 inhabitants)
50 Km NW of Teramo (54892 inhabitants)
59 Km NE of Terni (111501 inhabitants)
64 Km N of L'Aquila (69753 inhabitants)
70 Km E of Perugia (166134 inhabitants)
83 Km SW of Ancona (100861 inhabitants)
89 Km W of Montesilvano (53738 inhabitants)
96 Km NW of Pescara (121014 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 2020-09-17
01:53:07		 42.9052 13.1998 11 2020-09-17
01:58:43		 Sala Sismica INGV-Roma 82966561
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-17 01:53:07 ± 0.29
Latitude 42.9052 ± 0.0063
Longitude 13.1998 ± 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 82966561

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 720
Semi-minor axis of confidence ellipse (meter) 231
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 37
Circular confidence region, given by single value of horizontal uncertainty (meter) 720.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 127
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 8
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) 0.15468
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 4
Magnitude information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.2
Num. used stations 2
Type of magnitude ML
Reference to an origin 82966561
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-09-17 01:58:43
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PETRA.HHZ. 2020-09-17T01:54:17.38 3.0 undecidable manual Pg 17.290001 0
IV.CRJA.HHZ. 2020-09-17T01:54:13.92 3.0 positive manual Pg 13.53 0
IV.EVRN.HHZ. 2020-09-17T01:54:02.95 3.0 undecidable manual Pn -1.21 0
MN.TRI.HHZ. 2020-09-17T01:54:01.85 3.0 undecidable manual Pg 10.18 0
IV.CET2.HHZ. 2020-09-17T01:54:00.15 3.0 negative manual Pg 15.23 0
IV.MESG.HHZ. 2020-09-17T01:53:52.81 3.0 undecidable manual Pn 1.73 0
IV.PTRJ.HNZ. 2020-09-17T01:53:32.23 3.0 undecidable manual Sn -0.29 0
IV.CMPR.HHZ. 2020-09-17T01:53:31.32 3.0 positive manual Pn -0.8 0
IV.NARO.HHZ. 2020-09-17T01:53:25.61 3.0 positive manual Pg 0.88 0
IV.ROSPO.HHZ. 2020-09-17T01:53:15.68 3.0 undecidable manual P -0.62 0
IV.FDMO.HHZ. 2020-09-17T01:53:14.67 0.1 undecidable manual S 328 17.1717 122 -0.18 96
IV.MMO1.EHZ. 2020-09-17T01:53:12.82 0.1 undecidable manual S 94 10.3785 136 -0.16 98
IV.NRCA.HHZ. 2020-09-17T01:53:12.80 0.3 undecidable manual S 221 10.5783 135 -0.24 72
IV.MC2.EHZ. 2020-09-17T01:53:11.77 0.3 undecidable manual S 308 1.0989 174 0.22 74
IV.FDMO.HHZ. 2020-09-17T01:53:11.96 0.3 undecidable manual P 328 17.1717 122 0.08 74
IV.MMO1.EHZ. 2020-09-17T01:53:10.84 0.6 undecidable manual P 94 10.3785 136 0.04 50
IV.NRCA.HHZ. 2020-09-17T01:53:10.89 0.1 negative manual P 221 10.5783 135 0.06 100
IV.MC2.EHZ. 2020-09-17T01:53:10.25 0.3 undecidable manual P 308 1.0989 174 0.28 73
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HHN. ML:0.9 0.0000993 0.16 AML other m 2020-09-17T01:53:12.92
IV.NRCA.HHE. ML:1.2 0.000169 1.58 AML other m 2020-09-17T01:53:12.96
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