Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 27-09-2023 and time 16:30:04 (UTC) in region 4 km E Cerreto di Spoleto (PG)

A magnitude ML 2.0 earthquake occured in region: 4 km E Cerreto di Spoleto (PG), on

  • 27-09-2023 16:30:04 (UTC)
  • 27-09-2023 18:30:04 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.8260, 12.9670 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
Cerreto di Spoleto PG 4 1075 1075
Sellano PG 8 1079 2154
Preci PG 8 724 2878
Vallo di Nera PG 11 364 3242
Norcia PG 11 4957 8199
Cascia PG 13 3217 11416
Poggiodomo PG 13 117 11533
Sant'Anatolia di Narco PG 15 564 12097
Visso MC 15 1107 13204
Campello sul Clitunno PG 16 2442 15646
Scheggino PG 17 461 16107
Castelsantangelo sul Nera MC 17 281 16388
Trevi PG 19 8469 24857
Monte Cavallo MC 19 145 25002
Ussita MC 19 444 25446
Monteleone di Spoleto PG 19 599 26045

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km SE of Foligno (57155 inhabitants)
39 Km NE of Terni (111501 inhabitants)
57 Km SE of Perugia (166134 inhabitants)
63 Km W of Teramo (54892 inhabitants)
63 Km NW of L'Aquila (69753 inhabitants)
84 Km NE of Viterbo (67173 inhabitants)
94 Km N of Guidonia Montecelio (88673 inhabitants)
97 Km N of Tivoli (56533 inhabitants)
99 Km SW of Ancona (100861 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 2.0 2023-09-27
16:30:04		 42.8258 12.9673 10 2023-09-27
16:40:14		 Sala Sismica INGV-Roma 121519361
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-09-27 16:30:04 ± 0.05
Latitude 42.8258 ± 0.0027
Longitude 12.9673 ± 0.0037
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 121519361

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 294
Semi-minor axis of confidence ellipse (meter) 263
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 105
Circular confidence region, given by single value of horizontal uncertainty (meter) 290.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 64
Number of associated phases, regardless of their use for origin computation 56
Number of defining phases 45
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) 0.56837
Number of stations at which the event was observed 35
Number of stations from which data was used for origin computation 25
Magnitude information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations 56
Type of magnitude ML
Reference to an origin 121519361
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-09-27 16:40:14
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.GIUL.HHZ. 2023-09-27T16:30:44.65 3.0 undecidable manual S 0.28 0
IV.RIBO.EHZ.01 2023-09-27T16:30:31.61 3.0 undecidable manual P 3.29 0
IV.ARRO.EHZ. 2023-09-27T16:30:31.65 0.6 undecidable manual S 31.9458 1.616 0
IV.PIEI.HHZ. 2023-09-27T16:30:30.31 3.0 undecidable manual S -1.17 0
IV.ARRO.EHZ. 2023-09-27T16:30:26.93 0.1 undecidable manual P 31.9458 1.62 0
IV.CING.HHZ. 2023-09-27T16:30:24.87 3.0 undecidable manual S -0.18 0
IV.MURB.HHZ. 2023-09-27T16:30:24.01 0.6 undecidable manual S 324 60.2952 50 0.94 35
IV.ATCC.EHZ. 2023-09-27T16:30:19.93 0.6 undecidable manual S 326 47.9187 50 0.18 46
IV.ATPI.EHZ. 2023-09-27T16:30:18.08 3.0 negative manual P -0.74 0
IV.ATVO.HHZ. 2023-09-27T16:30:18.26 3.0 undecidable manual P 0.51 0
IV.SMA1.EHZ. 2023-09-27T16:30:17.86 0.6 undecidable manual S 126 37.0296 50 1.02 35
IV.MGAB.HHZ. 2023-09-27T16:30:17.05 3.0 positive manual P 0.44 0
IV.PF6.EHE. 2023-09-27T16:30:17.58 0.6 undecidable manual S 28 39.2274 50 0.14 47
IV.CSP1.EHZ. 2023-09-27T16:30:16.46 0.6 undecidable manual S 33 35.2425 50 0.08 48
IV.GIGS.HHZ. 2023-09-27T16:30:16.04 3.0 positive manual P 0.17 0
IV.FIAM.HHZ. 2023-09-27T16:30:15.36 0.3 negative manual P 169 63.0924 50 -0.17 67
IV.CING.HHZ. 2023-09-27T16:30:15.61 3.0 negative manual P -0.13 0
IV.MML1.EHZ. 2023-09-27T16:30:15.32 0.6 undecidable manual S 1 31.9458 50 -0.17 48
IV.MURB.HHZ. 2023-09-27T16:30:15.13 0.1 undecidable manual P 324 60.2952 50 0.02 93
IV.TERO.HHZ. 2023-09-27T16:30:14.56 3.0 positive manual P -0.05 0
7F.SIB2.EHZ. 2023-09-27T16:30:14.21 0.6 undecidable manual S 75 28.3494 50 -0.31 46
IV.MMO1.EHZ. 2023-09-27T16:30:14.93 0.6 undecidable manual S 74 30.3474 50 -0.14 48
IV.LNSS.HHZ. 2023-09-27T16:30:13.42 0.6 undecidable manual S 166 25.4523 111 -0.28 47
7F.SIB1.EHZ. 2023-09-27T16:30:13.77 0.6 undecidable manual S 73 25.752 111 -0.04 49
7F.SIB3.EHZ. 2023-09-27T16:30:13.22 0.6 undecidable manual S 77 25.2525 111 -0.41 46
IV.ATCC.EHZ. 2023-09-27T16:30:13.09 1.0 negative manual P 326 47.9187 50 -0.1 23
IV.FDMO.HHZ. 2023-09-27T16:30:13.39 0.6 undecidable manual S 23 25.3524 111 -0.27 47
IV.MF5.EHZ. 2023-09-27T16:30:12.79 3.0 positive manual P 0.22 0
IV.GUMA.HHZ. 2023-09-27T16:30:12.42 0.3 negative manual P 49 39.8268 50 0.48 66
IV.MC2.EHZ. 2023-09-27T16:30:12.52 0.6 undecidable manual S 62 20.3685 116 0.43 46
IV.RM33.EHZ. 2023-09-27T16:30:11.92 1.0 undecidable manual P 150 40.5261 50 -0.13 24
IV.PF6.EHE. 2023-09-27T16:30:11.60 0.1 undecidable manual P 28 39.2274 50 -0.25 92
IV.FEMA.HNZ. 2023-09-27T16:30:11.11 0.6 undecidable manual S 24 16.5723 121 0.2 49
IT.MTCL.HGZ. 2023-09-27T16:30:11.39 0.6 undecidable manual S 8 18.87 118 -0.22 48
IV.CSP1.EHZ. 2023-09-27T16:30:11.14 0.1 positive manual P 33 35.2425 50 -0.1 96
IV.CESI.HHZ. 2023-09-27T16:30:11.97 0.6 undecidable manual S 346 20.4684 116 -0.16 49
IV.SMA1.EHZ. 2023-09-27T16:30:11.78 1.0 positive manual P 126 37.0296 50 0.27 23
IV.MML1.EHZ. 2023-09-27T16:30:10.50 0.6 positive manual P 1 31.9458 50 -0.23 47
IV.GAVE.EHZ. 2023-09-27T16:30:10.78 0.6 undecidable manual S 202 15.9729 122 0.04 50
IV.MOMA.HHZ. 2023-09-27T16:30:10.72 0.3 negative manual P 266 32.4453 50 -0.09 72
IT.GNU.HGN. 2023-09-27T16:30:10.78 0.3 undecidable manual P 266 32.4453 50 -0.03 73
IV.MMO1.EHZ. 2023-09-27T16:30:10.42 0.1 positive manual P 74 30.3474 50 -0.07 97
IV.ASSB.HHZ. 2023-09-27T16:30:10.80 0.3 negative manual P 314 34.743 50 -0.37 68
7F.SIB3.EHZ. 2023-09-27T16:30:09.42 0.1 undecidable manual P 77 25.2525 111 -0.24 95
IV.NRCA.HHZ. 2023-09-27T16:30:09.84 0.6 undecidable manual S 86 11.9769 129 0.22 49
IV.FDMO.HHZ. 2023-09-27T16:30:09.51 1.0 undecidable manual P 23 25.3524 111 -0.17 24
7F.SIB2.EHZ. 2023-09-27T16:30:09.98 0.3 undecidable manual P 75 28.3494 50 -0.19 71
IV.LNSS.HHZ. 2023-09-27T16:30:09.58 0.1 positive manual P 166 25.4523 111 -0.12 97
7F.SIB1.EHZ. 2023-09-27T16:30:09.74 0.1 undecidable manual P 73 25.752 111 -0.02 99
IV.CESI.HHZ. 2023-09-27T16:30:08.81 0.1 positive manual P 346 20.4684 116 0.02 100
IV.MC2.EHZ. 2023-09-27T16:30:08.99 0.1 undecidable manual P 62 20.3685 116 0.22 96
IV.FEMA.HNZ. 2023-09-27T16:30:08.30 0.3 undecidable manual P 24 16.5723 121 0.21 73
IV.GAVE.EHZ. 2023-09-27T16:30:08.19 0.1 positive manual P 202 15.9729 122 0.2 97
IT.MTCL.HGZ. 2023-09-27T16:30:08.44 0.3 undecidable manual P 8 18.87 118 -0.05 75
IV.NRCA.HHZ. 2023-09-27T16:30:07.52 1.0 undecidable manual P 86 11.9769 129 0.18 25
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.NRCA.HNN. ML:2.3 0.002245 1.84 AML other m 2023-09-27T16:30:10.01
IV.NRCA.HHN. ML:2.3 0.00249 1.84 AML other m 2023-09-27T16:30:10.01
IV.NRCA.HNE. ML:2.1 0.00151 0.16 AML other m 2023-09-27T16:30:10.56
IV.NRCA.HHE. ML:2.2 0.001645 0.16 AML other m 2023-09-27T16:30:10.56
IV.GAVE.HNE. ML:2.7 0.004465 0.18 AML other m 2023-09-27T16:30:11.15
IV.GAVE.EHE. ML:2.7 0.00426 0.18 AML other m 2023-09-27T16:30:11.15
IV.GAVE.HNN. ML:2.0 0.000883 0.54 AML other m 2023-09-27T16:30:11.56
IV.FEMA.HNE. ML:2.5 0.002755 0.14 AML other m 2023-09-27T16:30:11.45
IV.GAVE.EHN. ML:2.5 0.00298 1.18 AML other m 2023-09-27T16:30:11.07
IV.FEMA.HNN. ML:2.3 0.00175 0.88 AML other m 2023-09-27T16:30:12.59
IV.CESI.HHN. ML:2.4 0.00198 0.4 AML other m 2023-09-27T16:30:12.26
IV.CESI.HHE. ML:2.1 0.0009715 1.84 AML other m 2023-09-27T16:30:13.00
IV.FDMO.HHN. ML:2.3 0.0011349999999999997 0.14 AML other m 2023-09-27T16:30:13.61
IV.LNSS.HHE. ML:2.2 0.0009260000000000001 0.24 AML other m 2023-09-27T16:30:13.69
IV.FDMO.HHE. ML:2.3 0.0011610000000000001 0.22 AML other m 2023-09-27T16:30:13.59
IV.LNSS.HHN. ML:2.4 0.0014750000000000002 0.24 AML other m 2023-09-27T16:30:13.85
IV.MMO1.EHN. ML:2.3 0.0010805 0.46 AML other m 2023-09-27T16:30:15.27
IV.MMO1.EHE. ML:2.1 0.0005765 0.48 AML other m 2023-09-27T16:30:15.67
IV.MML1.HNE. ML:2.1 0.0006125000000000001 0.3 AML other m 2023-09-27T16:30:15.71
IV.MML1.EHE. ML:2.1 0.0006364999999999999 0.28 AML other m 2023-09-27T16:30:15.71
IV.MML1.EHN. ML:2.0 0.000517 1.5 AML other m 2023-09-27T16:30:15.75
IV.MML1.HNN. ML:2.0 0.000499 0.16 AML other m 2023-09-27T16:30:15.75
IV.ASSB.HHE. ML:2.0 0.0003625 1.54 AML other m 2023-09-27T16:30:16.18
IV.MOMA.HNN. ML:1.8 0.000307 0.78 AML other m 2023-09-27T16:30:16.24
IV.MOMA.HHN. ML:1.8 0.000295 0.2 AML other m 2023-09-27T16:30:16.35
IV.MOMA.HHE. ML:1.9 0.000323 0.74 AML other m 2023-09-27T16:30:16.39
IV.ASSB.HHN. ML:1.9 0.000312 0.62 AML other m 2023-09-27T16:30:17.05
IV.MOMA.HNE. ML:1.8 0.000306 0.24 AML other m 2023-09-27T16:30:17.43
IV.CSP1.EHN. ML:2.2 0.0007125 0.52 AML other m 2023-09-27T16:30:17.57
IV.RM33.HNE. ML:1.9 0.0002635 0.66 AML other m 2023-09-27T16:30:18.37
IV.RM33.EHE. ML:1.9 0.000268 1.02 AML other m 2023-09-27T16:30:18.37
IV.RM33.EHN. ML:1.9 0.0002595 0.28 AML other m 2023-09-27T16:30:19.23
IV.RM33.HNN. ML:1.9 0.0002895 0.28 AML other m 2023-09-27T16:30:19.09
IV.SMA1.EHN. ML:1.8 0.0002245 1.54 AML other m 2023-09-27T16:30:19.98
IV.CSP1.EHE. ML:2.1 0.000523 0.76 AML other m 2023-09-27T16:30:19.30
IV.SMA1.EHE. ML:1.9 0.00029099999999999997 0.82 AML other m 2023-09-27T16:30:20.07
IV.ATCC.EHN. ML:1.9 0.000235 0.2 AML other m 2023-09-27T16:30:20.03
IV.ATCC.EHE. ML:2.0 0.000245 1.1 AML other m 2023-09-27T16:30:20.69
IV.GUMA.HHE. ML:2.1 0.0004685 1.04 AML other m 2023-09-27T16:30:21.58
IV.GUMA.HHN. ML:2.0 0.0003765 0.6 AML other m 2023-09-27T16:30:21.71
IV.TERO.HHE. ML:1.5 0.00007185 0.78 AML other m 2023-09-27T16:30:24.48
IV.TERO.HHN. ML:1.6 0.00008715 1.28 AML other m 2023-09-27T16:30:24.23
IV.CING.HHE. ML:1.6 0.00007065 1.5 AML other m 2023-09-27T16:30:25.95
IV.FIAM.HHN. ML:1.7 0.0000877 0.34 AML other m 2023-09-27T16:30:26.10
IV.FIAM.HHE. ML:1.7 0.00010655 0.76 AML other m 2023-09-27T16:30:26.51
IV.MURB.HHN. ML:2.3 0.00042249999999999997 0.36 AML other m 2023-09-27T16:30:26.22
IV.MURB.HHE. ML:2.3 0.000437 0.3 AML other m 2023-09-27T16:30:26.36
IV.CING.HHN. ML:1.6 0.000087 1.56 AML other m 2023-09-27T16:30:28.97
IV.ATVO.HHN. ML:1.5 0.000049199999999999997 1.56 AML other m 2023-09-27T16:30:31.78
IV.ATVO.HHE. ML:1.5 0.000050900000000000004 1.44 AML other m 2023-09-27T16:30:31.77
IV.MGAB.HHN. ML:1.7 0.0000857 0.72 AML other m 2023-09-27T16:30:31.17
IV.ATPI.EHE. ML:1.6 0.000049449999999999996 1.54 AML other m 2023-09-27T16:30:32.83
IV.PIEI.HHE. ML:1.6 0.00004885 1.02 AML other m 2023-09-27T16:30:32.99
IV.PIEI.HHN. ML:1.6 0.000042999999999999995 0.72 AML other m 2023-09-27T16:30:33.76
IV.MGAB.HHE. ML:1.7 0.00007374999999999999 0.5 AML other m 2023-09-27T16:30:34.89
IV.ATPI.EHN. ML:1.5 0.0000431 1.22 AML other m 2023-09-27T16:30:34.80
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
Waveforms Seismic signals in miniseed + resp format Download