Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 31-07-2023 and time 10:45:10 (Italy) in region 5 km SE Serravalle di Chienti (MC)

A magnitude ML 1.7 earthquake occured in region: 5 km SE Serravalle di Chienti (MC), on

  • 31-07-2023 08:45:10 (UTC)
  • 31-07-2023 10:45:10 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.0370, 12.9800 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
Serravalle di Chienti MC 5 1070 1070
Monte Cavallo MC 5 145 1215
Pieve Torina MC 6 1458 2673
Muccia MC 7 915 3588
Fiordimonte MC 9 202 3790
Pievebovigliana MC 9 866 4656
Sefro MC 13 422 5078
Camerino MC 13 6974 12052
Fiastra MC 14 559 12611
Visso MC 15 1107 13718
Acquacanina MC 16 121 13839
Pioraco MC 16 1134 14973
Ussita MC 17 444 15417
Sellano PG 17 1079 16496
Fiuminata MC 17 1402 17898
Nocera Umbra PG 17 5839 23737
Preci PG 18 724 24461
Valtopina PG 18 1398 25859

Municipalities with at least 50000 inhabitants

An earthquake occurred to
24 Km E of Foligno (57155 inhabitants)
49 Km E of Perugia (166134 inhabitants)
59 Km NE of Terni (111501 inhabitants)
73 Km NW of Teramo (54892 inhabitants)
78 Km SW of Ancona (100861 inhabitants)
84 Km NW of L'Aquila (69753 inhabitants)
90 Km S of Fano (60888 inhabitants)
97 Km S of Pesaro (94582 inhabitants)
99 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 1.7 2023-07-31
08:45:10		 43.0367 12.9797 12 2024-09-10
16:44:15		 Bollettino Sismico Italiano INGV 120439421
Reviewed
Rev100 		ML 1.7 2023-07-31
08:45:10		 43.039 12.9788 12 2023-07-31
08:50:29		 Sala Sismica INGV-Roma 119726691
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-07-31 08:45:10 ± 0.03
Latitude 43.0367 ± 0.0018
Longitude 12.9797 ± 0.0025
Depth (km) 12 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 120439421

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 200
Semi-minor axis of confidence ellipse (meter) 24
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 46
Circular confidence region, given by single value of horizontal uncertainty (meter) 200.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 50
Number of associated phases, regardless of their use for origin computation 53
Number of defining phases 53
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.16
Epicentral distance of station closest to the epicenter (degree) 0.04497
Epicentral distance of station farthest from the epicenter (degree) 0.61693
Number of stations at which the event was observed 28
Number of stations from which data was used for origin computation 28
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 26
Type of magnitude ML
Reference to an origin 120439421
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-08-24 14:57:38

ML:1.7

Field Value
Value 1.7
Uncertainty 0.4
Num. used stations 36
Type of magnitude ML
Reference to an origin 119726691
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-07-31 08:50:29
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FRON.EHZ. 2023-07-31T08:45:28.98 0.3 undecidable manual S 339 57.1983 91 0.43 63
IV.ATSC.EHE. 2023-07-31T08:45:26.91 0.3 undecidable manual S 331 49.1175 91 0.53 63
IV.MTRA.EHE. 2023-07-31T08:45:25.60 0.6 undecidable manual S 132 45.9207 91 0.05 47
IV.MURB.HHZ. 2023-07-31T08:45:25.62 0.6 undecidable manual S 304 44.622 92 0.44 43
IV.GAVE.EHN. 2023-07-31T08:45:24.03 0.3 undecidable manual S 190 38.8278 92 0.38 66
IV.TERO.HHZ. 2023-07-31T08:45:22.80 0.1 undecidable manual P 132 68.4759 91 0 89
IV.EL6.EHE. 2023-07-31T08:45:22.47 0.1 undecidable manual S 17 33.9438 92 0.12 94
IV.ATCC.EHZ. 2023-07-31T08:45:22.00 0.3 undecidable manual S 301 32.0457 93 0.15 70
IV.MPAG.EHZ. 2023-07-31T08:45:22.73 0.1 undecidable manual P 345 68.0763 91 -0.01 89
IV.PIEI.HHZ. 2023-07-31T08:45:22.40 0.1 undecidable manual P 327 65.9895 91 -0.01 90
IV.FOSV.HNE. 2023-07-31T08:45:22.23 0.3 undecidable manual S 328 33.6441 92 -0.04 71
IV.MMO1.EHZ. 2023-07-31T08:45:21.82 0.6 undecidable manual S 118 32.0457 93 -0.02 48
7F.SIB2.EHE. 2023-07-31T08:45:21.23 0.3 undecidable manual S 121 30.8469 93 -0.3 67
7F.SIB1.EHE. 2023-07-31T08:45:21.03 0.1 undecidable manual S 124 28.3494 93 0.17 94
IV.GUMA.HHZ. 2023-07-31T08:45:21.44 0.6 undecidable manual S 84 28.9488 93 0.42 44
IV.FRON.EHZ. 2023-07-31T08:45:20.90 0.1 undecidable manual P 339 57.1983 91 -0.16 88
7F.SIB3.EHN. 2023-07-31T08:45:20.89 0.3 undecidable manual S 127 29.6481 93 -0.3 68
IV.ASSB.HHN. 2023-07-31T08:45:20.00 0.3 undecidable manual S 272 26.0517 94 -0.24 69
IV.NRCA.HHZ. 2023-07-31T08:45:19.91 0.1 undecidable manual S 154 25.0527 94 -0.06 95
IV.ATSC.EHE. 2023-07-31T08:45:19.61 0.1 undecidable manual P 331 49.1175 91 -0.2 89
IV.MTRA.EHE. 2023-07-31T08:45:19.31 0.3 undecidable manual P 132 45.9207 91 -0.02 70
IV.MURB.HHZ. 2023-07-31T08:45:19.13 0.1 undecidable manual P 304 44.622 92 0.01 94
IV.MDAR.HNN. 2023-07-31T08:45:19.02 0.1 undecidable manual S 37 21.7671 96 -0.09 96
IV.MC2.EHZ. 2023-07-31T08:45:19.43 0.1 undecidable manual S 129 21.9669 95 0.28 93
IV.SNTG.HHZ. 2023-07-31T08:45:19.59 0.3 undecidable manual S 353 24.4533 94 -0.22 69
IV.PF6.EHN. 2023-07-31T08:45:18.67 0.3 undecidable manual S 57 20.6682 96 -0.15 71
IV.GAVE.EHN. 2023-07-31T08:45:18.20 0.1 undecidable manual P 190 38.8278 92 -0.03 94
IV.CSP1.EHZ. 2023-07-31T08:45:18.51 0.1 undecidable manual S 71 19.2696 98 0.07 97
IV.MMO1.EHZ. 2023-07-31T08:45:17.19 0.1 undecidable manual P 118 32.0457 93 0 96
IV.EL6.EHE. 2023-07-31T08:45:17.44 0.1 positive manual P 17 33.9438 92 -0.04 95
IV.ATCC.EHZ. 2023-07-31T08:45:17.11 0.1 undecidable manual P 301 32.0457 93 -0.08 94
IV.FOSV.HNE. 2023-07-31T08:45:17.28 0.1 undecidable manual P 328 33.6441 92 -0.16 92
IV.ASSB.HHN. 2023-07-31T08:45:16.11 0.1 negative manual P 272 26.0517 94 -0.15 94
IV.GUMA.HHZ. 2023-07-31T08:45:16.63 0.6 undecidable manual P 84 28.9488 93 -0.08 47
IV.NRCA.HHZ. 2023-07-31T08:45:16.02 0.1 positive manual P 154 25.0527 94 -0.09 95
IV.FEMA.HNZ. 2023-07-31T08:45:16.22 0.1 undecidable manual S 145 10.0788 126 0.09 98
7F.SIB3.EHN. 2023-07-31T08:45:16.65 0.1 positive manual P 127 29.6481 93 -0.16 93
7F.SIB2.EHE. 2023-07-31T08:45:16.89 0.1 positive manual P 121 30.8469 93 -0.12 93
7F.SIB1.EHE. 2023-07-31T08:45:16.68 0.1 undecidable manual P 124 28.3494 93 0.06 96
IV.MDAR.HNN. 2023-07-31T08:45:15.58 0.1 undecidable manual P 37 21.7671 96 -0.03 97
IV.MC2.EHZ. 2023-07-31T08:45:15.70 0.1 undecidable manual P 129 21.9669 95 0.07 97
IV.SNTG.HHZ. 2023-07-31T08:45:15.84 0.1 undecidable manual P 353 24.4533 94 -0.17 93
IV.CESI.HNZ. 2023-07-31T08:45:15.55 0.1 undecidable manual S 240 6.993 140 0 100
IV.MML1.EHZ. 2023-07-31T08:45:15.69 0.1 undecidable manual S 356 8.5803 132 -0.14 97
IV.PF6.EHN. 2023-07-31T08:45:15.37 0.1 negative manual P 57 20.6682 96 -0.07 96
IV.FDMO.HHZ. 2023-07-31T08:45:15.74 0.3 undecidable manual S 90 8.6802 132 -0.12 73
IV.CSP1.EHZ. 2023-07-31T08:45:15.27 0.1 negative manual P 71 19.2696 98 0.05 97
IT.MTCL.HGZ. 2023-07-31T08:45:14.99 0.3 undecidable manual S 161 4.995 151 -0.25 71
IV.FEMA.HNZ. 2023-07-31T08:45:14.07 0.1 positive manual P 145 10.0788 126 0.18 96
IV.MML1.EHZ. 2023-07-31T08:45:13.78 0.1 negative manual P 356 8.5803 132 0.07 99
IV.FDMO.HHZ. 2023-07-31T08:45:13.83 0.1 negative manual P 90 8.6802 132 0.1 98
IT.MTCL.HGZ. 2023-07-31T08:45:13.43 0.1 positive manual P 161 4.995 151 0.06 100
IV.CESI.HNZ. 2023-07-31T08:45:13.71 0.1 positive manual P 240 6.993 140 0.16 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CESI.HHE. ML:2.0 0.00123 0.2 AML other m 2023-07-31T08:45:15.69
IV.CESI.HHN. ML:1.9 0.0010394999999999998 0.16 AML other m 2023-07-31T08:45:15.78
IV.FDMO.HHE. ML:2.1 0.0016 0.12 AML other m 2023-07-31T08:45:15.92
IV.MML1.HNN. ML:1.8 0.000843 0.58 AML other m 2023-07-31T08:45:16.00
IV.MML1.EHN. ML:1.8 0.0008345000000000001 0.58 AML other m 2023-07-31T08:45:16.00
IV.FDMO.HHN. ML:2.4 0.0029100000000000003 1.86 AML other m 2023-07-31T08:45:16.95
IV.MML1.EHE. ML:1.7 0.0006675 0.18 AML other m 2023-07-31T08:45:16.02
IV.MML1.HNE. ML:1.7 0.000637 0.18 AML other m 2023-07-31T08:45:16.02
IV.CSP1.EHE. ML:1.8 0.0005075 1.58 AML other m 2023-07-31T08:45:18.80
IV.CSP1.EHN. ML:1.6 0.0003148153 0.1216 AML other m 2023-07-31T08:45:18.77
IV.SNTG.HNN. ML:1.7 0.00028849999999999997 1.88 AML other m 2023-07-31T08:45:19.96
IV.SNTG.HHN. ML:1.3 0.00011865000000000001 0.16 AML other m 2023-07-31T08:45:19.97
IV.NRCA.HHN. ML:1.8 0.00034750000000000004 0.14 AML other m 2023-07-31T08:45:20.05
IV.SNTG.HNE. ML:1.7 0.00027649999999999994 0.92 AML other m 2023-07-31T08:45:20.53
IV.SNTG.HHE. ML:1.5 0.000184 1.7 AML other m 2023-07-31T08:45:20.07
IV.NRCA.HHE. ML:1.6 0.00022713085 0.0832 AML other m 2023-07-31T08:45:20.85
IV.GUMA.HHN. ML:1.8 0.0002755 1.86 AML other m 2023-07-31T08:45:21.00
IV.GUMA.HHE. ML:2.0 0.0005200000000000001 0.18 AML other m 2023-07-31T08:45:21.90
IV.ATCC.EHE. ML:1.7 0.00023449999999999998 0.12 AML other m 2023-07-31T08:45:22.25
IV.ATCC.EHN. ML:1.6 0.00019250000000000002 0.32 AML other m 2023-07-31T08:45:22.34
IV.MMO1.EHN. ML:1.7 0.00022299999999999997 0.44 AML other m 2023-07-31T08:45:22.20
IV.MMO1.EHE. ML:1.5 0.0001495 0.94 AML other m 2023-07-31T08:45:22.65
IV.MURB.HHE. ML:1.7 0.00014500000000000003 0.56 AML other m 2023-07-31T08:45:27.18
IV.MURB.HHN. ML:1.7 0.000144 0.22 AML other m 2023-07-31T08:45:28.11
IV.MPAG.EHE. ML:1.1 0.000020150000000000002 1.34 AML other m 2023-07-31T08:45:33.71
IV.MPAG.EHN. ML:1.1 0.000021499999999999997 1.32 AML other m 2023-07-31T08:45:33.75
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