Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 09-09-2021 and time 14:01:13 (Italy) in region 6 km S Castelsantangelo sul Nera (MC)

A magnitude ML 1.4 earthquake occured in region: 6 km S Castelsantangelo sul Nera (MC), on

  • 09-09-2021 12:01:13 (UTC)
  • 09-09-2021 14:01:13 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8420, 13.1540 at 10 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 6 281 281
Norcia PG 7 4957 5238
Preci PG 10 724 5962
Visso MC 11 1107 7069
Ussita MC 12 444 7513
Arquata del Tronto AP 14 1178 8691
Montegallo AP 15 523 9214
Montemonaco AP 16 604 9818
Cascia PG 18 3217 13035
Bolognola MC 18 142 13177
Accumoli RI 18 667 13844
Montefortino FM 19 1178 15022
Sellano PG 19 1079 16101
Cerreto di Spoleto PG 20 1075 17176

Municipalities with at least 50000 inhabitants

An earthquake occurred to
39 Km E of Foligno (57155 inhabitants)
49 Km W of Teramo (54892 inhabitants)
52 Km NE of Terni (111501 inhabitants)
58 Km NW of L'Aquila (69753 inhabitants)
69 Km E of Perugia (166134 inhabitants)
89 Km W of Montesilvano (53738 inhabitants)
91 Km SW of Ancona (100861 inhabitants)
96 Km W of Pescara (121014 inhabitants)
98 Km E of Viterbo (67173 inhabitants)
99 Km NW of Chieti (51815 inhabitants)
100 Km NE of Guidonia Montecelio (88673 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 1.4 2021-09-09
12:01:13		 42.8423 13.1543 10 2022-03-30
13:04:07		 Bollettino Sismico Italiano INGV 95983431
Reviewed
Rev100 		ML 1.7 2021-09-09
12:01:13		 42.842 13.1548 10 2021-09-09
12:17:21		 Sala Sismica INGV-Roma 95233861
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-09 12:01:13 ± 0.04
Latitude 42.8423 ± 0.0027
Longitude 13.1543 ± 0.0037
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 95983431

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 306
Semi-minor axis of confidence ellipse (meter) 225
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 68
Circular confidence region, given by single value of horizontal uncertainty (meter) 310.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 46
Number of associated phases, regardless of their use for origin computation 53
Number of defining phases 42
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.53330
Number of stations at which the event was observed 34
Number of stations from which data was used for origin computation 23
Magnitudes information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.1
Num. used stations 20
Type of magnitude ML
Reference to an origin 95983431
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-09-28 08:40:53

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 49
Type of magnitude ML
Reference to an origin 95233861
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-09 12:17:21
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.NDIM.HHZ. 2021-09-09T12:02:35.83 3.0 undecidable manual Sg 8.75 0
IV.OVO.HHZ. 2021-09-09T12:02:21.91 3.0 undecidable manual Sg 4.53 0
IV.RNI2.HHZ. 2021-09-09T12:01:57.12 3.0 undecidable manual S 0.73 0
IX.SCL3.EHZ.02 2021-09-09T12:01:54.88 3.0 positive manual Pn -1.99 0
IV.LAV9.HNZ. 2021-09-09T12:01:52.74 3.0 undecidable manual S -0.11 0
GU.POPM.HHZ. 2021-09-09T12:01:52.91 3.0 positive manual Pg 5.08 0
IV.TST02.HHZ. 2021-09-09T12:01:51.77 3.0 undecidable manual S -2.11 0
IV.RMP.HHZ. 2021-09-09T12:01:48.07 3.0 undecidable manual S -1.61 0
IV.ARVD.HHZ. 2021-09-09T12:01:37.33 3.0 undecidable manual S 0.15 0
IV.EL6.EHZ. 2021-09-09T12:01:30.74 0.3 undecidable manual S 356 54.2013 50 0.45 64
IV.MGAB.HHZ. 2021-09-09T12:01:30.61 3.0 positive manual P 2.2 0
IV.ASSB.HHZ. 2021-09-09T12:01:28.14 0.6 undecidable manual S 299 45.9207 50 0.05 47
IV.SAP2.EHZ. 2021-09-09T12:01:25.60 0.3 undecidable manual S 35 34.5432 50 0.56 64
IV.RM33.EHZ. 2021-09-09T12:01:25.72 0.6 undecidable manual S 172 37.3293 50 -0.07 48
IV.MF5.EHZ. 2021-09-09T12:01:24.13 0.6 undecidable manual S 57 29.5482 50 0.4 45
IV.MML1.EHZ. 2021-09-09T12:01:24.59 0.3 undecidable manual S 334 33.5442 50 -0.19 71
IV.CING.HHZ. 2021-09-09T12:01:23.85 1.0 undecidable manual P 3 59.1963 50 0.04 23
IV.LNSS.HHZ. 2021-09-09T12:01:23.40 0.3 undecidable manual S 199 28.1496 50 0.06 73
IV.GUMA.HHZ. 2021-09-09T12:01:23.41 0.6 undecidable manual S 31 28.5492 50 -0.03 49
IV.SMA1.EHZ. 2021-09-09T12:01:23.00 0.3 undecidable manual S 148 27.75 50 -0.24 71
IV.GAVE.EHZ. 2021-09-09T12:01:23.12 0.3 undecidable manual S 232 26.9508 50 0.1 73
IV.SNTG.HHZ. 2021-09-09T12:01:22.40 3.0 undecidable manual P 0.09 0
IV.CSP1.EHZ. 2021-09-09T12:01:22.91 0.3 undecidable manual S 8 27.9498 50 -0.38 68
IV.CESI.HHZ. 2021-09-09T12:01:22.97 0.3 undecidable manual S 312 27.1506 50 -0.1 73
IV.OFFI.HHZ. 2021-09-09T12:01:22.27 0.6 undecidable manual P 76 44.4222 50 0.75 39
IV.EL6.EHZ. 2021-09-09T12:01:22.87 0.6 undecidable manual P 356 54.2013 50 -0.16 46
IV.TERO.HHZ. 2021-09-09T12:01:21.26 0.3 positive manual P 123 44.0226 50 -0.2 69
IV.ASSB.HHZ. 2021-09-09T12:01:21.57 0.1 positive manual P 299 45.9207 50 -0.19 92
IV.ARRO.EHZ. 2021-09-09T12:01:21.48 0.3 undecidable manual P 227 43.1235 50 0.16 70
IV.MTRA.EHZ. 2021-09-09T12:01:21.20 0.3 undecidable manual S 116 21.867 114 -0.25 71
IV.FDMO.HHZ. 2021-09-09T12:01:21.16 0.3 undecidable manual S 346 22.1556 114 -0.39 69
IV.MML1.EHZ. 2021-09-09T12:01:20.24 0.3 undecidable manual P 334 33.5442 50 0.39 68
IT.MTCL.HGN. 2021-09-09T12:01:20.82 0.3 undecidable manual S 323 20.9679 115 -0.35 70
IV.SAP2.EHZ. 2021-09-09T12:01:20.15 0.6 undecidable manual P 35 34.5432 50 0.15 47
IV.RM33.EHZ. 2021-09-09T12:01:20.38 0.1 negative manual P 172 37.3293 50 -0.05 96
IV.MF5.EHZ. 2021-09-09T12:01:19.30 0.1 positive manual P 57 29.5482 50 0.06 97
IV.FEMA.HNN. 2021-09-09T12:01:19.61 0.6 undecidable manual S 327 15.7731 122 0.04 50
IV.LNSS.HHZ. 2021-09-09T12:01:19.00 0.1 positive manual P 199 28.1496 50 -0.02 98
IV.GUMA.HHZ. 2021-09-09T12:01:19.04 0.1 positive manual P 31 28.5492 50 -0.04 98
IV.MMO1.EHZ. 2021-09-09T12:01:19.18 0.3 undecidable manual S 66 15.3735 123 -0.29 71
IV.SMA1.EHZ. 2021-09-09T12:01:18.80 0.3 undecidable manual P 148 27.75 50 -0.16 72
IV.GAVE.EHZ. 2021-09-09T12:01:18.87 0.1 undecidable manual P 232 26.9508 50 0.04 98
IV.CSP1.EHZ. 2021-09-09T12:01:18.70 0.1 positive manual P 8 27.9498 50 -0.29 93
IV.CESI.HHZ. 2021-09-09T12:01:18.77 0.1 positive manual P 312 27.1506 50 -0.09 97
IV.MTRA.EHZ. 2021-09-09T12:01:17.79 0.1 positive manual P 116 21.867 114 -0.14 97
IV.FDMO.HHZ. 2021-09-09T12:01:17.85 0.1 positive manual P 346 22.1556 114 -0.13 97
IV.MC2.EHZ. 2021-09-09T12:01:17.78 0.3 undecidable manual S 20 8.1807 141 0.21 73
IT.MTCL.HGN. 2021-09-09T12:01:17.66 0.3 undecidable manual P 323 20.9679 115 -0.1 73
IV.MMO1.EHZ. 2021-09-09T12:01:16.74 0.1 positive manual P 66 15.3735 123 -0.04 100
IV.NRCA.HNZ. 2021-09-09T12:01:16.99 0.3 undecidable manual S 253 3.3966 161 0.24 74
IV.FEMA.HNN. 2021-09-09T12:01:16.96 0.3 undecidable manual P 327 15.7731 122 0.12 74
IV.MC2.EHZ. 2021-09-09T12:01:15.98 0.1 negative manual P 20 8.1807 141 0.29 96
IV.NRCA.HNZ. 2021-09-09T12:01:15.59 0.1 undecidable manual P 253 3.3966 161 0.38 95
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.FDMO.HHN. ML:1.5 0.0001995 0.28 AML other m 2021-09-09T12:01:21.82
IV.FDMO.HHE. ML:1.4 0.00016299999999999998 0.16 AML other m 2021-09-09T12:01:22.62
IV.SMA1.EHE. ML:1.4 0.00011753871000000001 0.1216 AML other m 2021-09-09T12:01:23.91
IV.MF5.EHN. ML:1.6 0.000174 0.28 AML other m 2021-09-09T12:01:24.63
IV.MF5.EHE. ML:1.7 0.000223 0.3 AML other m 2021-09-09T12:01:24.59
IV.RM33.EHE. ML:1.4 0.0000862 0.18 AML other m 2021-09-09T12:01:26.33
IV.RM33.EHN. ML:1.4 0.00009620000000000001 0.64 AML other m 2021-09-09T12:01:27.95
IV.SMA1.EHN. ML:1.4 0.00014044859999999998 0.4224 AML other m 2021-09-09T12:01:28.35
IV.ARRO.EHN. ML:1.3 0.000060049999999999996 0.26 AML other m 2021-09-09T12:01:28.49
IV.ARRO.EHE. ML:1.4 0.0000741 1.82 AML other m 2021-09-09T12:01:28.99
IV.ASSB.HHE. ML:1.4 0.00007505000000000001 1.46 AML other m 2021-09-09T12:01:29.19
IV.ASSB.HHN. ML:1.5 0.0000986 0.18 AML other m 2021-09-09T12:01:30.28
IV.EL6.EHN. ML:1.4 0.00005525208 0.1216 AML other m 2021-09-09T12:01:32.56
IV.CING.HHE. ML:1.3 0.000042499999999999996 0.08 AML other m 2021-09-09T12:01:33.49
IV.CING.HHN. ML:1.3 0.0000415 0.78 AML other m 2021-09-09T12:01:34.71
IV.OFFI.HHE. ML:1.5 0.00010002215000000001 0.5824 AML other m 2021-09-09T12:01:34.55
IV.OFFI.HHN. ML:1.6 0.0001342389 0.6592 AML other m 2021-09-09T12:01:37.37
IV.MGAB.HHE. ML:1.3 0.000026000000000000002 1.06 AML other m 2021-09-09T12:01:43.66
IV.EL6.EHE. ML:1.7 0.000132065305 0.72 AML other m 2021-09-09T12:01:43.63
IV.MGAB.HHN. ML:1.2 0.000021917795000000002 0.2816 AML other m 2021-09-09T12:01:47.32
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