Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 08-03-2023 and time 00:31:22 (UTC) in region 2 km NE Sansepolcro (AR)

A magnitude ML 1.8 earthquake occured in region: 2 km NE Sansepolcro (AR), on

  • 08-03-2023 00:31:22 (UTC)
  • 08-03-2023 01:31:22 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.5910, 12.1560 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
Sansepolcro AR 3 15884 15884
San Giustino PG 5 11297 27181
Anghiari AR 10 5638 32819
Citerna PG 11 3531 36350
Monterchi AR 12 1757 38107
Pieve Santo Stefano AR 13 3183 41290
Badia Tedalda AR 13 1087 42377
Borgo Pace PU 14 606 42983
Caprese Michelangelo AR 15 1426 44409
Mercatello sul Metauro PU 16 1378 45787
Città di Castello PG 16 39913 85700
Monte Santa Maria Tiberina PG 17 1183 86883
Sestino AR 17 1355 88238

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km NE of Arezzo (99543 inhabitants)
57 Km NW of Perugia (166134 inhabitants)
61 Km S of Cesena (96758 inhabitants)
62 Km SW of Rimini (147750 inhabitants)
71 Km SW of Pesaro (94582 inhabitants)
71 Km S of Forlì (117913 inhabitants)
73 Km E of Siena (53903 inhabitants)
75 Km W of Fano (60888 inhabitants)
75 Km E of Firenze (382808 inhabitants)
80 Km S of Faenza (58541 inhabitants)
81 Km E of Scandicci (50609 inhabitants)
83 Km NW of Foligno (57155 inhabitants)
91 Km E of Prato (191150 inhabitants)
92 Km SE of Imola (69797 inhabitants)
92 Km S of Ravenna (159116 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 1.8 2023-03-08
00:31:22		 43.5912 12.1558 10 2024-03-01
17:18:08		 Bollettino Sismico Italiano INGV 117284231
Reviewed
Rev100 		ML 1.8 2023-03-08
00:31:22		 43.5892 12.1577 9 2023-03-08
00:46:28		 Sala Sismica INGV-Roma 115084481
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-03-08 00:31:22 ± 0.04
Latitude 43.5912 ± 0.0027
Longitude 12.1558 ± 0.0025
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 117284231

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 289
Semi-minor axis of confidence ellipse (meter) 199
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 213
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) 62
Number of associated phases, regardless of their use for origin computation 65
Number of defining phases 65
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.02518
Epicentral distance of station farthest from the epicenter (degree) 0.87504
Number of stations at which the event was observed 40
Number of stations from which data was used for origin computation 40
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 68
Type of magnitude ML
Reference to an origin 117284231
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-05-12 11:00:44

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 68
Type of magnitude ML
Reference to an origin 115084481
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-03-08 00:46:28
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FDMO.HHZ. 2023-03-08T00:31:39.31 0.6 undecidable manual P 129 97.125 50 0.21 41
IV.CESI.HHZ. 2023-03-08T00:31:38.24 0.6 undecidable manual P 137 88.7445 50 0.42 40
IV.FRON.EHZ. 2023-03-08T00:31:38.05 0.3 undecidable manual S 100 46.5201 50 0.31 67
IV.MURB.HHE. 2023-03-08T00:31:38.32 0.6 undecidable manual S 141 47.0196 50 0.45 43
IV.MPAG.EHZ. 2023-03-08T00:31:38.68 0.6 undecidable manual S 85 48.7179 50 0.37 44
IV.MML1.EHZ. 2023-03-08T00:31:37.11 0.6 undecidable manual P 129 84.4488 50 -0.04 44
IV.SFI.EHZ. 2023-03-08T00:31:36.62 0.6 undecidable manual S 325 42.7239 50 -0.1 47
IV.MGAB.HHZ. 2023-03-08T00:31:36.22 0.3 undecidable manual P 183 75.369 50 0.47 61
IV.OSSC.HHZ. 2023-03-08T00:31:35.17 0.3 undecidable manual P 264 73.5708 50 -0.3 63
IV.ASSB.HHZ. 2023-03-08T00:31:35.56 0.3 undecidable manual P 146 73.1712 50 0.16 65
IV.BOSL.HHZ. 2023-03-08T00:31:35.82 0.1 undecidable manual P 301 73.0713 50 0.43 82
IV.CSNT.HHZ. 2023-03-08T00:31:35.69 0.1 undecidable manual P 260 70.8735 50 0.64 77
IV.ARVD.HHZ. 2023-03-08T00:31:34.00 0.1 undecidable manual P 99 63.9915 50 0 92
IV.CAFI.HHZ. 2023-03-08T00:31:34.05 0.6 undecidable manual S 208 32.8449 50 -0.04 48
IV.ATLO.EHE. 2023-03-08T00:31:34.95 0.3 undecidable manual S 146 36.741 50 -0.17 70
IV.TB01.DHZ.01 2023-03-08T00:31:34.06 0.6 undecidable manual S 136 32.3454 50 0.1 48
IV.LMD.HHZ. 2023-03-08T00:31:34.08 0.1 undecidable manual P 327 64.7907 50 -0.04 91
IV.TSM2.DHN.01 2023-03-08T00:31:34.68 0.6 undecidable manual S 129 34.5432 50 0.15 47
IV.NARO.HHZ. 2023-03-08T00:31:34.28 0.3 undecidable manual S 86 34.1436 50 -0.17 70
IV.ATVA.EHE. 2023-03-08T00:31:34.64 0.6 undecidable manual S 163 36.2415 50 -0.35 45
IV.ATVO.HHZ. 2023-03-08T00:31:33.43 0.6 undecidable manual S 139 30.747 50 -0.1 48
IV.FOSV.EHZ. 2023-03-08T00:31:33.18 0.1 undecidable manual P 124 58.7967 50 -0.01 92
IV.TB03.DHZ.01 2023-03-08T00:31:33.21 0.3 undecidable manual S 136 29.3484 50 0.05 72
IV.TB02.DHZ.01 2023-03-08T00:31:33.91 0.3 undecidable manual S 140 31.8459 50 0.08 72
IV.ATMI.HHZ. 2023-03-08T00:31:33.09 0.3 undecidable manual S 162 29.9478 50 -0.22 70
IV.ATCC.EHZ. 2023-03-08T00:31:33.45 0.3 undecidable manual P 139 59.5959 50 0.13 67
IV.PIEI.HHZ. 2023-03-08T00:31:33.52 0.3 undecidable manual S 101 31.0467 50 -0.1 71
IV.PE3.EHZ. 2023-03-08T00:31:33.46 0.3 undecidable manual S 67 29.748 50 0.21 70
IV.RUFI.EHZ. 2023-03-08T00:31:33.30 0.1 undecidable manual P 298 58.5969 50 0.14 90
IV.ATPC.HHE. 2023-03-08T00:31:32.75 0.6 undecidable manual S 117 27.1506 109 0.28 46
IV.SSFR.HHZ. 2023-03-08T00:31:32.15 0.3 undecidable manual P 109 53.2023 50 -0.19 67
IV.ATPI.EHZ. 2023-03-08T00:31:31.97 0.3 undecidable manual S 128 25.2525 111 0.12 72
IV.FRON.EHZ. 2023-03-08T00:31:31.07 0.1 positive manual P 100 46.5201 50 -0.23 90
IV.MURB.HHE. 2023-03-08T00:31:31.39 0.1 undecidable manual P 141 47.0196 50 0.02 94
IV.MPAG.EHZ. 2023-03-08T00:31:31.53 0.1 positive manual P 85 48.7179 50 -0.1 92
IV.APEC.HHZ. 2023-03-08T00:31:30.87 0.3 undecidable manual S 100 21.5673 114 0.21 71
IV.SFI.EHZ. 2023-03-08T00:31:30.50 0.3 undecidable manual P 325 42.7239 50 -0.21 68
IV.TSM2.DHN.01 2023-03-08T00:31:29.14 0.1 positive manual P 129 34.5432 50 -0.31 91
IV.NARO.HHZ. 2023-03-08T00:31:29.08 0.1 positive manual P 86 34.1436 50 -0.32 90
IV.ATVA.EHE. 2023-03-08T00:31:29.49 0.3 undecidable manual P 163 36.2415 50 -0.22 69
IV.CAFI.HHZ. 2023-03-08T00:31:29.25 0.1 undecidable manual P 208 32.8449 50 0.06 96
IV.ATLO.EHE. 2023-03-08T00:31:29.64 0.1 positive manual P 146 36.741 50 -0.15 93
IV.CDCA.HNZ. 2023-03-08T00:31:29.37 0.6 undecidable manual S 157 15.9729 121 0.42 46
IV.ATMC.EHE. 2023-03-08T00:31:29.01 0.3 undecidable manual S 169 16.2726 120 -0.03 74
IV.PE3.EHZ. 2023-03-08T00:31:28.65 0.3 undecidable manual P 67 29.748 50 -0.06 72
IV.ATVO.HHZ. 2023-03-08T00:31:28.77 0.1 positive manual P 139 30.747 50 -0.1 95
IV.CRE.HHZ. 2023-03-08T00:31:28.91 0.3 undecidable manual S 281 16.6722 120 -0.25 71
IV.TB03.DHZ.01 2023-03-08T00:31:28.52 0.1 positive manual P 136 29.3484 50 -0.14 95
IV.TB02.DHZ.01 2023-03-08T00:31:28.97 0.1 positive manual P 140 31.8459 50 -0.07 96
IV.ATMI.HHZ. 2023-03-08T00:31:28.61 0.3 undecidable manual P 162 29.9478 50 -0.13 71
IV.CPGN.HNZ. 2023-03-08T00:31:28.79 0.3 undecidable manual P 29 26.751 109 0.6 64
IV.ATPC.HHE. 2023-03-08T00:31:28.16 0.1 positive manual P 117 27.1506 109 -0.1 96
IV.TB01.DHZ.01 2023-03-08T00:31:28.97 0.1 positive manual P 136 32.3454 50 -0.15 94
IV.PIEI.HHZ. 2023-03-08T00:31:28.65 0.1 positive manual P 101 31.0467 50 -0.27 92
IV.APEC.HHZ. 2023-03-08T00:31:27.30 0.1 positive manual P 100 21.5673 114 0.09 97
IV.BADI.EHZ. 2023-03-08T00:31:27.64 0.1 undecidable manual S 142 11.4774 129 -0.03 100
IV.ATPI.EHZ. 2023-03-08T00:31:27.82 0.1 positive manual P 128 25.2525 111 -0.08 97
IV.PARC.HHZ. 2023-03-08T00:31:26.75 0.3 undecidable manual S 46 9.1797 136 -0.33 71
IV.CDCA.HNZ. 2023-03-08T00:31:26.38 0.1 undecidable manual P 157 15.9729 121 0.15 97
IV.ATMC.EHE. 2023-03-08T00:31:26.40 0.1 positive manual P 169 16.2726 120 0.12 97
IV.CRE.HHZ. 2023-03-08T00:31:26.46 0.1 positive manual P 281 16.6722 120 0.12 97
IV.PARC.HHZ. 2023-03-08T00:31:25.20 0.1 positive manual P 46 9.1797 136 0.05 100
IV.BADI.EHZ. 2023-03-08T00:31:25.64 0.1 positive manual P 142 11.4774 129 0.15 97
IV.SSP9.EHZ. 2023-03-08T00:31:25.48 0.3 undecidable manual S 226 2.7972 164 -0.44 70
IV.SSP9.EHZ. 2023-03-08T00:31:24.36 0.1 negative manual P 226 2.7972 164 -0.11 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PARC.HHN. ML:2.4 0.0038904225000000003 0.2 AML other m 2023-03-08T00:31:26.89
IV.PARC.HHE. ML:2.2 0.0023186479999999995 0.22 AML other m 2023-03-08T00:31:26.78
IV.BADI.EHN. ML:1.9 0.0010903855 0.12 AML other m 2023-03-08T00:31:27.84
IV.BADI.EHE. ML:2.1 0.0014046276 0.24 AML other m 2023-03-08T00:31:29.70
IV.CRE.HHE. ML:1.6 0.00037053365000000004 0.2 AML other m 2023-03-08T00:31:30.14
IV.CRE.HHN. ML:1.8 0.0005785 0.22 AML other m 2023-03-08T00:31:30.98
IV.APEC.HHN. ML:2.0 0.0006777647 0.14 AML other m 2023-03-08T00:31:31.57
IV.ATPI.HNE. ML:1.9 0.00042668830000000004 0.27 AML other m 2023-03-08T00:31:32.17
IV.ATPI.EHE. ML:1.9 0.00042449999999999996 0.28 AML other m 2023-03-08T00:31:32.18
IV.ATMI.HHE. ML:1.9 0.00037142794999999996 1.78 AML other m 2023-03-08T00:31:33.01
IV.PIEI.HNN. ML:1.9 0.00039949999999999995 0.12 AML other m 2023-03-08T00:31:33.93
IV.ATCC.HNN. ML:1.8 0.00014246915 1.27 AML other m 2023-03-08T00:31:33.34
IV.PIEI.HHE. ML:2.4 0.00106 1.88 AML other m 2023-03-08T00:31:33.98
IV.PIEI.HNE. ML:2.3 0.00098814375 1.89 AML other m 2023-03-08T00:31:33.04
IV.ATVO.HHN. ML:2.0 0.000419 0.36 AML other m 2023-03-08T00:31:34.19
IV.ATVO.HNN. ML:1.9 0.00040249999999999997 0.36 AML other m 2023-03-08T00:31:34.19
IV.PE3.EHE. ML:2.2 0.000852181 0.34 AML other m 2023-03-08T00:31:34.17
IV.ATPI.HNN. ML:1.8 0.00034394905 0.21 AML other m 2023-03-08T00:31:34.18
IV.ATPI.EHN. ML:1.8 0.0003305 0.2 AML other m 2023-03-08T00:31:34.18
IV.PE3.EHN. ML:2.5 0.0015689645 0.32 AML other m 2023-03-08T00:31:34.33
IV.CAFI.HHE. ML:1.5 0.0001465 0.14 AML other m 2023-03-08T00:31:34.46
IV.CAFI.HNE. ML:1.5 0.00013449635 0.13 AML other m 2023-03-08T00:31:34.47
IV.PIEI.HHN. ML:2.1 0.000551 0.14 AML other m 2023-03-08T00:31:34.60
IV.ATVO.HHE. ML:1.9 0.00041052175 0.26 AML other m 2023-03-08T00:31:34.85
IV.ATVO.HNE. ML:2.0 0.00042400000000000006 0.26 AML other m 2023-03-08T00:31:34.85
IV.NARO.HHE. ML:2.0 0.00042449999999999996 0.08 AML other m 2023-03-08T00:31:34.75
IV.NARO.HHN. ML:2.1 0.0005780000000000001 1.94 AML other m 2023-03-08T00:31:34.01
IV.CAFI.HHN. ML:1.4 0.00011103428500000001 0.2 AML other m 2023-03-08T00:31:35.12
IV.APEC.HNE. ML:2.2 0.00109011275 0.32 AML other m 2023-03-08T00:31:35.67
IV.APEC.HHE. ML:2.2 0.0011899999999999999 0.32 AML other m 2023-03-08T00:31:35.84
IV.APEC.HNN. ML:2.1 0.00081955645 0.28 AML other m 2023-03-08T00:31:35.84
IV.CAFI.HNN. ML:1.3 0.00009132251 0.21 AML other m 2023-03-08T00:31:36.27
IV.SFI.HNE. ML:2.0 0.0002835878 0.23 AML other m 2023-03-08T00:31:37.15
IV.SFI.EHE. ML:2.0 0.000297 0.24 AML other m 2023-03-08T00:31:37.15
IV.SFI.EHN. ML:1.6 0.00013512875000000002 0.48 AML other m 2023-03-08T00:31:37.18
IV.FRON.EHE. ML:1.7 0.0001575 0.1 AML other m 2023-03-08T00:31:38.29
IV.FRON.EHN. ML:1.8 0.00018280374999999998 0.14 AML other m 2023-03-08T00:31:39.25
IV.MPAG.EHE. ML:1.8 0.0001915 0.14 AML other m 2023-03-08T00:31:39.46
IV.MPAG.EHN. ML:1.7 0.00013949095 0.24 AML other m 2023-03-08T00:31:40.54
IV.SSFR.HNE. ML:2.1 0.00032572065 0.17 AML other m 2023-03-08T00:31:41.47
IV.SSFR.HHN. ML:2.3 0.00047 0.14 AML other m 2023-03-08T00:31:41.65
IV.SSFR.HNN. ML:2.3 0.000496 0.14 AML other m 2023-03-08T00:31:41.59
IV.SSFR.HHE. ML:2.1 0.000299 0.18 AML other m 2023-03-08T00:31:41.74
IV.ATMI.HHN. ML:1.6 0.00021461990000000002 1.58 AML other m 2023-03-08T00:31:41.89
IV.ATCC.EHN. ML:1.7 0.0001122772 0.22 AML other m 2023-03-08T00:31:43.39
IV.ATCC.HNE. ML:1.9 0.000182289435 0.39 AML other m 2023-03-08T00:31:43.78
IV.RUFI.EHE. ML:1.7 0.00011215 0.38 AML other m 2023-03-08T00:31:44.44
IV.ARVD.HHE. ML:1.5 0.00005519544 0.14 AML other m 2023-03-08T00:31:44.23
IV.ATCC.EHE. ML:1.9 0.00015177655 0.38 AML other m 2023-03-08T00:31:44.32
IV.ARVD.HHN. ML:1.5 0.000058432780000000006 0.14 AML other m 2023-03-08T00:31:44.37
IV.LMD.HHE. ML:1.8 0.00011712369999999999 0.34 AML other m 2023-03-08T00:31:44.58
IV.RUFI.EHN. ML:1.8 0.00014900000000000002 0.58 AML other m 2023-03-08T00:31:44.68
IV.LMD.HHN. ML:1.8 0.00011700062 1.84 AML other m 2023-03-08T00:31:45.97
IV.ASSB.HHN. ML:1.4 0.000040118505 0.32 AML other m 2023-03-08T00:31:46.02
IV.FOSV.EHE. ML:1.4 0.000062131965 0.4 AML other m 2023-03-08T00:31:46.76
IV.BOSL.HHN. ML:1.4 0.0000363 0.3 AML other m 2023-03-08T00:31:47.75
IV.ASSB.HHE. ML:1.5 0.000048863815000000006 0.32 AML other m 2023-03-08T00:31:48.64
IV.FOSV.EHN. ML:1.4 0.00005631452 0.52 AML other m 2023-03-08T00:31:48.73
IV.BOSL.HHE. ML:1.4 0.00003645 0.42 AML other m 2023-03-08T00:31:49.40
IV.MGAB.HHN. ML:1.8 0.000092668655 0.62 AML other m 2023-03-08T00:31:50.50
IV.CSNT.HHE. ML:1.6 0.00006612759 0.72 AML other m 2023-03-08T00:31:51.42
IV.CSNT.HHN. ML:1.4 0.00003881808 0.82 AML other m 2023-03-08T00:31:51.46
IV.MGAB.HHE. ML:1.7 0.00007664793 0.28 AML other m 2023-03-08T00:31:51.93
IV.CESI.HHN. ML:1.5 0.000034750000000000004 0.78 AML other m 2023-03-08T00:31:52.66
IV.FDMO.HHN. ML:1.5 0.000030038345 0.18 AML other m 2023-03-08T00:31:54.65
IV.MML1.EHN. ML:1.4 0.00003326446515 0.4 AML other m 2023-03-08T00:31:57.25
IV.MML1.EHE. ML:1.5 0.000039752035000000004 1.66 AML other m 2023-03-08T00:31:58.08
IV.FDMO.HHE. ML:1.3 0.000019668254499999998 0.5 AML other m 2023-03-08T00:31:58.68
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