Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.4 on date 02-10-2020 and time 23:00:52 (Italy) in region 5 km S Castelsantangelo sul Nera (MC)

A magnitude ML 0.4 earthquake occured in region: 5 km S Castelsantangelo sul Nera (MC), on

  • 02-10-2020 21:00:52 (UTC)
  • 02-10-2020 23:00:52 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8530, 13.1620 at 12 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
Norcia PG 9 4957 5238
Ussita MC 10 444 5682
Preci PG 10 724 6406
Visso MC 11 1107 7513
Montegallo AP 14 523 8036
Arquata del Tronto AP 14 1178 9214
Montemonaco AP 15 604 9818
Bolognola MC 17 142 9960
Montefortino FM 18 1178 11138
Accumoli RI 19 667 11805
Cascia PG 19 3217 15022
Sellano PG 20 1079 16101
Acquacanina MC 20 121 16222

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km E of Foligno (57155 inhabitants)
49 Km W of Teramo (54892 inhabitants)
53 Km NE of Terni (111501 inhabitants)
59 Km NW of L'Aquila (69753 inhabitants)
69 Km E of Perugia (166134 inhabitants)
89 Km W of Montesilvano (53738 inhabitants)
90 Km SW of Ancona (100861 inhabitants)
96 Km W of Pescara (121014 inhabitants)
99 Km E of Viterbo (67173 inhabitants)
99 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
Bulletin
Rev1000 		ML 0.4 2020-10-02
21:00:52		 42.8533 13.1623 12 2021-02-26
14:56:17		 Bollettino Sismico Italiano INGV 86850531
Reviewed
Rev100 		Md 1.7 2020-10-02
21:00:51		 42.8555 13.1572 13 2020-10-02
21:21:49		 Sala Sismica INGV-Roma 83450651
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-02 21:00:52 ± 0.06
Latitude 42.8533 ± 0.0027
Longitude 13.1623 ± 0.0049
Depth (km) 12 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 86850531

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 370
Semi-minor axis of confidence ellipse (meter) 37
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 249
Circular confidence region, given by single value of horizontal uncertainty (meter) 370.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 68
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 28
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0.04047
Epicentral distance of station farthest from the epicenter (degree) 0.39750
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 14
Magnitudes information

ML:0.4

Field Value
Value 0.4
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 86850531
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-02-05 09:03:50

Md:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 14
Type of magnitude Md
Reference to an origin 83450651
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-10-02 21:21:49
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.TERO.HHZ. 2020-10-02T21:01:06.01 0.3 undecidable manual S 125 44.1225 91 -0.24 68
IV.MML1.HNZ. 2020-10-02T21:01:03.62 0.3 undecidable manual S 332 32.745 92 0.41 67
IV.GUMA.HHZ. 2020-10-02T21:01:02.25 0.3 undecidable manual S 31 27.1506 92 0.54 64
IV.LNSS.HHE. 2020-10-02T21:01:02.45 0.3 undecidable manual S 200 29.5482 92 0.11 71
IV.MF5.EHN. 2020-10-02T21:01:02.27 0.6 undecidable manual S 58 28.3494 92 0.23 46
IV.SMA1.EHN. 2020-10-02T21:01:01.88 0.3 undecidable manual S 150 28.4493 92 -0.18 71
IV.CESI.HHZ. 2020-10-02T21:01:01.76 0.3 undecidable manual S 309 26.8509 92 0.12 72
IV.T1299.EHZ. 2020-10-02T21:01:01.76 0.3 undecidable manual S 158 26.1516 92 0.3 68
IV.CSP1.EHZ. 2020-10-02T21:01:01.58 0.3 undecidable manual S 7 26.6511 92 -0.01 73
IV.TERO.HHZ. 2020-10-02T21:01:00.07 0.3 undecidable manual P 125 44.1225 91 -0.16 69
IV.FDMO.HHZ. 2020-10-02T21:00:59.96 0.3 undecidable manual S 343 21.1677 94 -0.17 71
IT.MTCL.HGZ. 2020-10-02T21:00:59.71 0.3 undecidable manual S 320 20.4684 94 -0.22 71
IV.MF5.EHN. 2020-10-02T21:00:58.02 0.3 undecidable manual P 58 28.3494 92 0.22 69
IV.MML1.HNZ. 2020-10-02T21:00:58.08 0.6 undecidable manual P 332 32.745 92 -0.4 45
IV.CESI.HHZ. 2020-10-02T21:00:57.49 0.1 undecidable manual P 309 26.8509 92 -0.07 96
IV.T1299.EHZ. 2020-10-02T21:00:57.68 0.6 undecidable manual P 158 26.1516 92 0.21 47
IV.MMO1.EHZ. 2020-10-02T21:00:57.98 0.3 undecidable manual S 69 14.2746 105 -0.33 70
IV.CSP1.EHZ. 2020-10-02T21:00:57.43 0.6 undecidable manual P 7 26.6511 92 -0.11 48
IV.GUMA.HHZ. 2020-10-02T21:00:57.65 0.6 undecidable manual P 31 27.1506 92 0.04 48
IV.LNSS.HHE. 2020-10-02T21:00:57.83 0.1 undecidable manual P 200 29.5482 92 -0.15 95
IV.SMA1.EHN. 2020-10-02T21:00:57.81 0.3 undecidable manual P 150 28.4493 92 0 73
IT.MTCL.HGZ. 2020-10-02T21:00:56.42 0.3 undecidable manual P 320 20.4684 94 -0.16 72
IV.NRCA.HNE. 2020-10-02T21:00:56.28 0.3 undecidable manual S 241 4.4955 152 0 75
IV.FDMO.HHZ. 2020-10-02T21:00:56.53 0.1 undecidable manual P 343 21.1677 94 -0.17 96
IV.MC2.EHZ. 2020-10-02T21:00:56.76 0.3 undecidable manual S 19 6.7932 140 0.13 75
IV.MMO1.EHZ. 2020-10-02T21:00:55.49 0.1 undecidable manual P 69 14.2746 105 -0.15 97
IV.NRCA.HNE. 2020-10-02T21:00:54.59 0.1 undecidable manual P 241 4.4955 152 0.12 100
IV.MC2.EHZ. 2020-10-02T21:00:54.87 0.1 undecidable manual P 19 6.7932 140 0.19 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHN. ML:0.4 0.00001411577 0.1664 AML other m 2020-10-02T21:01:00.30
IV.FDMO.HHE. ML:0.4 0.0000126461875 0.1408 AML other m 2020-10-02T21:01:00.44
IV.TERO.HHN. ML:0.5 0.000008521606500000001 0.1408 AML other m 2020-10-02T21:01:06.25
IV.TERO.HHE. ML:0.5 0.00000967967 0.064 AML other m 2020-10-02T21:01:07.54
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