Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 24-09-2023 and time 21:17:15 (UTC) in region 4 km NW Apecchio (PU)

A magnitude ML 1.6 earthquake occured in region: 4 km NW Apecchio (PU), on

  • 24-09-2023 21:17:15 (UTC)
  • 24-09-2023 23:17:15 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.5860, 12.3870 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
Apecchio PU 4 1882 1882
Mercatello sul Metauro PU 8 1378 3260
Sant'Angelo in Vado PU 9 4133 7393
Piobbico PU 10 2029 9422
Borgo Pace PU 11 606 10028
Urbania PU 15 7099 17127
Belforte all'Isauro PU 15 769 17896
Peglio PU 15 696 18592
Sestino AR 16 1355 19947
Piandimeleto PU 16 2167 22114
Pietralunga PG 16 2111 24225
Lunano PU 17 1527 25752
San Giustino PG 17 11297 37049
Città di Castello PG 19 39913 76962
Sansepolcro AR 20 15884 92846
Frontino PU 20 293 93139

Municipalities with at least 50000 inhabitants

An earthquake occurred to
43 Km E of Arezzo (99543 inhabitants)
53 Km N of Perugia (166134 inhabitants)
55 Km S of Rimini (147750 inhabitants)
56 Km SW of Pesaro (94582 inhabitants)
59 Km W of Fano (60888 inhabitants)
62 Km S of Cesena (96758 inhabitants)
75 Km NW of Foligno (57155 inhabitants)
76 Km SE of Forlì (117913 inhabitants)
88 Km SE of Faenza (58541 inhabitants)
90 Km E of Siena (53903 inhabitants)
91 Km W of Ancona (100861 inhabitants)
93 Km E of Firenze (382808 inhabitants)
94 Km S of Ravenna (159116 inhabitants)
99 Km E of Scandicci (50609 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 1.6 2023-09-24
21:17:15		 43.586 12.3872 10 2023-09-24
21:33:47		 Sala Sismica INGV-Roma 121429841
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-09-24 21:17:15 ± 0.04
Latitude 43.5860 ± 0.0018
Longitude 12.3872 ± 0.0025
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 121429841

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 221
Semi-minor axis of confidence ellipse (meter) 208
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 159
Circular confidence region, given by single value of horizontal uncertainty (meter) 220.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 47
Number of associated phases, regardless of their use for origin computation 40
Number of defining phases 38
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.17
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.39840
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 21
Magnitude information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 34
Type of magnitude ML
Reference to an origin 121429841
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-09-24 21:33:47
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CSP1.EHZ. 2023-09-24T21:17:32.72 3.0 positive manual P 2.2 0
IV.FDMO.HHZ. 2023-09-24T21:17:29.28 3.0 positive manual P -0.8 0
IV.CAFI.HHZ. 2023-09-24T21:17:29.77 0.1 undecidable manual S 230 44.2224 50 0.15 92
IV.CRE.HHZ. 2023-09-24T21:17:27.08 0.1 undecidable manual S 276 35.1426 50 -0.12 93
IV.MPAG.EHZ. 2023-09-24T21:17:26.04 0.1 undecidable manual S 81 30.2475 50 0.15 94
IV.ATMI.HHZ. 2023-09-24T21:17:25.63 0.3 undecidable manual S 199 29.5482 50 -0.05 71
IV.FRON.EHZ. 2023-09-24T21:17:25.23 0.1 undecidable manual S 105 28.2495 50 -0.12 94
IV.ATFO.HHZ. 2023-09-24T21:17:25.50 0.1 undecidable manual S 149 28.5492 50 0.09 96
IV.TB03.DH1.05 2023-09-24T21:17:23.17 0.1 undecidable manual S 175 20.5683 117 0.03 98
IV.CAFI.HHZ. 2023-09-24T21:17:23.52 0.1 undecidable manual P 230 44.2224 50 0.01 94
IV.ATVO.HHZ. 2023-09-24T21:17:23.82 0.1 undecidable manual S 176 22.6551 114 0.02 98
IV.TSM2.DHZ.01 2023-09-24T21:17:23.77 0.1 undecidable manual S 159 22.5552 114 0 98
IV.BADI.EHZ. 2023-09-24T21:17:21.10 0.1 undecidable manual S 234 14.2746 126 -0.16 96
IV.CRE.HHZ. 2023-09-24T21:17:21.98 0.6 undecidable manual P 276 35.1426 50 -0.13 46
IV.NARO.HHZ. 2023-09-24T21:17:21.38 0.1 undecidable manual S 80 15.7731 123 -0.31 93
IV.ATPC.HHE. 2023-09-24T21:17:21.15 0.1 undecidable manual S 154 12.9759 128 0.25 95
IV.ATPI.EHZ. 2023-09-24T21:17:21.60 0.1 undecidable manual S 175 15.0738 124 0.12 97
IV.ATMI.HHZ. 2023-09-24T21:17:21.12 0.1 positive manual P 199 29.5482 50 -0.12 94
IV.MPAG.EHZ. 2023-09-24T21:17:21.28 0.3 positive manual P 81 30.2475 50 -0.08 71
IV.FRON.EHZ. 2023-09-24T21:17:20.86 0.6 undecidable manual P 105 28.2495 50 -0.18 47
IV.TSM5.DH2.10 2023-09-24T21:17:20.39 0.3 undecidable manual P 124 20.9679 116 0.55 65
IV.TSM6.DHZ.11 2023-09-24T21:17:20.93 0.1 undecidable manual S 199 13.3755 128 -0.07 98
IV.PARC.HHZ. 2023-09-24T21:17:20.97 0.6 undecidable manual S 300 13.7751 127 -0.16 48
IV.ATFO.HHZ. 2023-09-24T21:17:20.96 0.3 negative manual P 149 28.5492 50 -0.12 71
IV.PIEI.HHZ. 2023-09-24T21:17:20.67 0.1 undecidable manual S 115 13.1757 128 -0.27 94
IV.ATVO.HHZ. 2023-09-24T21:17:20.12 0.1 positive manual P 176 22.6551 114 -0.03 97
IV.CPGN.HNZ. 2023-09-24T21:17:20.99 0.1 undecidable manual P 347 24.4533 50 0.54 87
IV.TB03.DH1.05 2023-09-24T21:17:19.76 0.1 undecidable manual P 175 20.5683 117 -0.01 98
IV.TSM2.DHZ.01 2023-09-24T21:17:19.98 0.1 undecidable manual P 159 22.5552 114 -0.16 95
IV.PIEI.HHZ. 2023-09-24T21:17:18.45 0.1 undecidable manual P 115 13.1757 128 -0.05 99
IV.PE3.EHZ. 2023-09-24T21:17:18.94 0.3 positive manual P 36 15.0738 124 0.13 72
IV.BADI.EHZ. 2023-09-24T21:17:18.65 0.1 undecidable manual P 234 14.2746 126 -0.04 99
IV.TSM6.DHZ.11 2023-09-24T21:17:18.57 0.1 undecidable manual P 199 13.3755 128 0.04 99
IV.APEC.HHZ. 2023-09-24T21:17:18.91 0.1 undecidable manual S 139 3.996 159 -0.08 100
IV.PARC.HHZ. 2023-09-24T21:17:18.48 0.1 undecidable manual P 300 13.7751 127 -0.13 97
IV.NARO.HHZ. 2023-09-24T21:17:18.85 0.1 undecidable manual P 80 15.7731 123 -0.08 98
IV.ATPC.HHE. 2023-09-24T21:17:18.63 0.1 undecidable manual P 154 12.9759 128 0.16 97
IV.ATPI.EHZ. 2023-09-24T21:17:18.92 0.1 positive manual P 175 15.0738 124 0.11 97
IV.APEC.HHZ. 2023-09-24T21:17:17.54 0.1 negative manual P 139 3.996 159 0.17 98
IV.SAIV.HNZ. 2023-09-24T21:17:17.93 0.1 undecidable manual P 13 8.9799 139 0.03 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.APEC.HHN. ML:2.2 0.002700997 0.1152 AML other m 2023-09-24T21:17:19.49
IV.APEC.HHE. ML:2.1 0.002076737 0.1792 AML other m 2023-09-24T21:17:19.88
IV.PIEI.HHE. ML:2.0 0.00100473995 0.1152 AML other m 2023-09-24T21:17:20.77
IV.PIEI.HNE. ML:2.0 0.00115252425 0.1024 AML other m 2023-09-24T21:17:20.77
IV.PIEI.HNN. ML:1.8 0.000744 0.1 AML other m 2023-09-24T21:17:21.11
IV.PIEI.HHN. ML:1.9 0.00075226915 0.1024 AML other m 2023-09-24T21:17:20.79
IV.BADI.EHN. ML:1.8 0.000668 0.14 AML other m 2023-09-24T21:17:21.17
IV.BADI.EHE. ML:2.0 0.0009187172000000001 0.0896 AML other m 2023-09-24T21:17:21.29
IV.NARO.HHE. ML:1.8 0.0005845000000000001 0.08 AML other m 2023-09-24T21:17:21.56
IV.NARO.HHN. ML:2.0 0.0009755 0.06 AML other m 2023-09-24T21:17:21.60
IV.ATPI.EHN. ML:1.3 0.00020600000000000002 0.24 AML other m 2023-09-24T21:17:21.75
IV.PE3.EHN. ML:1.8 0.0006789103 0.192 AML other m 2023-09-24T21:17:22.69
IV.PE3.EHE. ML:1.8 0.00064233655 0.2432 AML other m 2023-09-24T21:17:22.89
IV.ATPI.EHE. ML:1.2 0.0001611898 0.1024 AML other m 2023-09-24T21:17:21.68
IV.ATVO.HHN. ML:1.5 0.000203 0.16 AML other m 2023-09-24T21:17:24.16
IV.ATVO.HHE. ML:1.8 0.0004205 0.12 AML other m 2023-09-24T21:17:24.17
IV.ATFO.HHN. ML:1.2 0.00008949703 0.1536 AML other m 2023-09-24T21:17:25.77
IV.MPAG.EHN. ML:1.3 0.00010130656350000001 0.1792 AML other m 2023-09-24T21:17:26.28
IV.ATFO.HHE. ML:1.4 0.00011531640999999999 0.1792 AML other m 2023-09-24T21:17:25.93
IV.MPAG.EHE. ML:1.2 0.00006985845 0.0768 AML other m 2023-09-24T21:17:26.19
IV.APEC.HNE. ML:2.3 0.0031482345 0.3328 AML other m 2023-09-24T21:17:19.65
IV.APEC.HNN. ML:2.0 0.0019351455 0.1152 AML other m 2023-09-24T21:17:19.49
IV.ATPI.HNE. ML:1.3 0.00016833955000000001 0.1024 AML other m 2023-09-24T21:17:21.73
IV.ATPI.HNN. ML:1.3 0.0001894769 0.1408 AML other m 2023-09-24T21:17:21.75
IV.ATVO.HNE. ML:1.8 0.0003960862 0.128 AML other m 2023-09-24T21:17:24.17
IV.ATVO.HNN. ML:1.5 0.0001881138 0.1536 AML other m 2023-09-24T21:17:24.17
IV.FRON.EHE. ML:1.0 0.000054894505 0.0768 AML other m 2023-09-24T21:17:25.64
IV.FRON.EHN. ML:1.2 0.000080347095 0.064 AML other m 2023-09-24T21:17:27.38
IV.ATMI.HHE. ML:1.5 0.00016440575000000002 0.2432 AML other m 2023-09-24T21:17:26.71
IV.ATMI.HHN. ML:1.4 0.00012068755 0.1792 AML other m 2023-09-24T21:17:26.14
IV.CRE.HHE. ML:1.0 0.00004500471 0.1536 AML other m 2023-09-24T21:17:28.03
IV.CRE.HHN. ML:1.2 0.00007051931 0.4096 AML other m 2023-09-24T21:17:27.30
IV.FDMO.HHE. ML:1.6 0.000051812905 2.56 AML other m 2023-09-24T21:17:29.63
IV.FDMO.HHN. ML:1.6 0.00004837884 1.6768 AML other m 2023-09-24T21:17:34.40
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