Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.7 on date 18-09-2020 and time 06:05:19 (Italy) in region 5 km SW Castelsantangelo sul Nera (MC)

A magnitude ML 0.7 earthquake occured in region: 5 km SW Castelsantangelo sul Nera (MC), on

  • 18-09-2020 04:05:19 (UTC)
  • 18-09-2020 06:05:19 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8640, 13.1080 at 9 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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 5 281 281
Preci PG 6 724 1005
Visso MC 8 1107 2112
Norcia PG 8 4957 7069
Ussita MC 9 444 7513
Sellano PG 15 1079 8592
Cerreto di Spoleto PG 16 1075 9667
Monte Cavallo MC 17 145 9812
Bolognola MC 18 142 9954
Cascia PG 18 3217 13171
Montemonaco AP 18 604 13775
Arquata del Tronto AP 19 1178 14953
Montegallo AP 19 523 15476
Fiordimonte MC 19 202 15678
Acquacanina MC 19 121 15799
Fiastra MC 20 559 16358

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km E of Foligno (57155 inhabitants)
50 Km NE of Terni (111501 inhabitants)
54 Km W of Teramo (54892 inhabitants)
62 Km NW of L'Aquila (69753 inhabitants)
64 Km E of Perugia (166134 inhabitants)
90 Km SW of Ancona (100861 inhabitants)
94 Km W of Montesilvano (53738 inhabitants)
96 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
Bulletin
Rev1000 		ML 0.7 2020-09-18
04:05:19		 42.8635 13.1075 9 2021-02-26
14:56:20		 Bollettino Sismico Italiano INGV 87375771
Reviewed
Rev100 		ML 1.5 2020-09-18
04:05:19		 42.8583 13.1093 10 2020-09-18
04:12:48		 Sala Sismica INGV-Roma 82998311
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-18 04:05:19 ± 0.12
Latitude 42.8635 ± 0.0027
Longitude 13.1075 ± 0.0049
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 87375771

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 399
Semi-minor axis of confidence ellipse (meter) 42
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 51
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) 92
Number of associated phases, regardless of their use for origin computation 24
Number of defining phases 24
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) 0.03058
Epicentral distance of station farthest from the epicenter (degree) 0.28598
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitudes information

ML:0.7

Field Value
Value 0.7
Uncertainty 0.2
Num. used stations 9
Type of magnitude ML
Reference to an origin 87375771
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-02-22 11:22:52

ML:1.5

Field Value
Value 1.5
Uncertainty 0.4
Num. used stations 6
Type of magnitude ML
Reference to an origin 82998311
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-09-18 04:12:48
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MF5.EHZ. 2020-09-18T04:05:31.36 0.6 undecidable manual S 64 31.746 105 0.65 42
IV.T1299.HNN. 2020-09-18T04:05:29.96 0.6 undecidable manual S 151 29.1486 107 0.13 48
IV.MTRA.EHZ. 2020-09-18T04:05:28.52 0.3 undecidable manual S 117 26.3514 108 -0.39 69
IV.GAVE.EHZ. 2020-09-18T04:05:28.50 0.6 undecidable manual S 222 25.752 109 -0.21 47
IV.CSP1.EHZ. 2020-09-18T04:05:28.78 0.6 undecidable manual S 17 26.5512 108 -0.19 48
IV.CESI.HHZ. 2020-09-18T04:05:27.77 0.3 undecidable manual S 314 22.755 111 0.04 74
IV.FDMO.HHZ. 2020-09-18T04:05:26.36 0.6 undecidable manual S 355 19.2696 115 -0.26 48
IV.MMO1.EHZ. 2020-09-18T04:05:26.15 0.3 undecidable manual S 77 18.2706 116 -0.16 73
IV.MF5.EHZ. 2020-09-18T04:05:25.98 0.3 undecidable manual P 64 31.746 105 0.11 72
IV.T1299.HNN. 2020-09-18T04:05:25.95 0.3 undecidable manual P 151 29.1486 107 0.58 65
IT.MTCL.HGZ. 2020-09-18T04:05:25.78 0.6 undecidable manual S 329 16.9719 117 -0.11 49
IV.CSP1.EHZ. 2020-09-18T04:05:24.69 0.1 undecidable manual P 17 26.5512 108 -0.18 95
IV.CESI.HHZ. 2020-09-18T04:05:24.16 0.1 undecidable manual P 314 22.755 111 0 100
IV.FEMA.HNE. 2020-09-18T04:05:24.55 0.6 undecidable manual S 337 11.877 126 0.14 49
IV.MTRA.EHZ. 2020-09-18T04:05:24.51 0.1 undecidable manual P 117 26.3514 108 -0.32 93
IV.GAVE.EHZ. 2020-09-18T04:05:24.70 0.3 undecidable manual P 222 25.752 109 -0.02 74
IV.MMO1.EHZ. 2020-09-18T04:05:23.25 0.1 undecidable manual P 77 18.2706 116 -0.08 99
IT.MTCL.HGZ. 2020-09-18T04:05:23.14 0.3 undecidable manual P 329 16.9719 117 0.05 75
IV.MC2.EHZ. 2020-09-18T04:05:23.68 0.6 undecidable manual S 51 8.4804 136 0.17 49
IV.FDMO.HHZ. 2020-09-18T04:05:23.28 0.3 undecidable manual P 355 19.2696 115 -0.23 72
IV.NRCA.HHZ. 2020-09-18T04:05:22.39 0.1 undecidable manual S 171 3.3966 159 -0.15 100
IV.MC2.EHZ. 2020-09-18T04:05:22.02 0.1 undecidable manual P 51 8.4804 136 0.3 96
IV.FEMA.HNE. 2020-09-18T04:05:22.57 0.6 undecidable manual P 337 11.877 126 0.34 47
IV.NRCA.HHZ. 2020-09-18T04:05:21.33 0.1 undecidable manual P 171 3.3966 159 0.17 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHE. ML:0.6 0.000023571060000000003 0.16 AML other m 2020-09-18T04:05:28.13
IV.CESI.HHN. ML:0.9 0.00005685 0.14 AML other m 2020-09-18T04:05:28.07
IV.FDMO.HHE. ML:0.4 0.000018168685 0.2016 AML other m 2020-09-18T04:05:28.36
IV.FDMO.HHN. ML:0.4 0.0000179406745 0.1376 AML other m 2020-09-18T04:05:28.07
IV.MTRA.EHN. ML:0.6 0.000026870114 0.1408 AML other m 2020-09-18T04:05:30.18
IV.MTRA.EHE. ML:0.8 0.00003600253 0.1792 AML other m 2020-09-18T04:05:29.93
IV.CSP1.EHN. ML:1.0 0.00004895246 0.2592 AML other m 2020-09-18T04:05:30.70
IV.GAVE.EHN. ML:0.8 0.000040999462 0.1184 AML other m 2020-09-18T04:05:28.73
IV.GAVE.EHE. ML:1.0 0.000053859025 0.0992 AML other m 2020-09-18T04:05:29.08
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