Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.8 on date 10-03-2023 and time 06:45:22 (UTC) in region 6 km NE Città di Castello (PG)

A magnitude ML 0.8 earthquake occured in region: 6 km NE Città di Castello (PG), on

  • 10-03-2023 06:45:22 (UTC)
  • 10-03-2023 07:45:22 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.4970, 12.2880 at 7 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
Città di Castello PG 6 39913 39913
San Giustino PG 11 11297 51210
Monte Santa Maria Tiberina PG 12 1183 52393
Apecchio PU 13 1882 54275
Pietralunga PG 14 2111 56386
Citerna PG 14 3531 59917
Monterchi AR 14 1757 61674
Sansepolcro AR 14 15884 77558
Montone PG 15 1680 79238
Mercatello sul Metauro PU 17 1378 80616
Borgo Pace PU 18 606 81222
Anghiari AR 19 5638 86860

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km E of Arezzo (99543 inhabitants)
44 Km N of Perugia (166134 inhabitants)
67 Km SW of Rimini (147750 inhabitants)
68 Km SW of Pesaro (94582 inhabitants)
69 Km NW of Foligno (57155 inhabitants)
70 Km SW of Fano (60888 inhabitants)
71 Km S of Cesena (96758 inhabitants)
80 Km E of Siena (53903 inhabitants)
83 Km S of Forlì (117913 inhabitants)
88 Km E of Firenze (382808 inhabitants)
94 Km SE of Faenza (58541 inhabitants)
94 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
Bulletin
Rev1000 		ML 0.8 2023-03-10
06:45:22		 43.4973 12.2882 7 2024-03-01
17:18:03		 Bollettino Sismico Italiano INGV 116311481
Reviewed
Rev100 		ML 1.1 2023-03-10
06:45:21		 43.4955 12.285 10 2023-03-10
06:51:59		 Sala Sismica INGV-Roma 115188441
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-03-10 06:45:22 ± 0.13
Latitude 43.4973 ± 0.0027
Longitude 12.2882 ± 0.0037
Depth (km) 7 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 116311481

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 297
Semi-minor axis of confidence ellipse (meter) 139
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 142
Circular confidence region, given by single value of horizontal uncertainty (meter) 300.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 70
Number of associated phases, regardless of their use for origin computation 28
Number of defining phases 28
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) 0.03417
Epicentral distance of station farthest from the epicenter (degree) 0.24012
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 14
Magnitudes information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 115188441
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-03-10 06:51:59

ML:0.8

Field Value
Value 0.8
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 116311481
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-04-12 12:53:45
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.NARO.HHZ. 2023-03-10T06:45:31.28 0.3 undecidable manual S 62 26.6511 105 -0.56 64
IV.ATBU.EHZ. 2023-03-10T06:45:30.25 0.6 undecidable manual S 96 21.0678 109 0.26 47
IV.ATVA.EHZ. 2023-03-10T06:45:30.37 0.3 undecidable manual S 181 24.2535 107 -0.67 62
IV.ATLO.HNZ. 2023-03-10T06:45:30.24 0.3 undecidable manual S 155 22.3554 108 -0.18 71
IV.PIEI.HHZ. 2023-03-10T06:45:29.82 0.1 undecidable manual S 78 20.2686 110 0.08 97
IV.ATMI.HHZ. 2023-03-10T06:45:29.14 0.1 undecidable manual S 185 18.1707 112 0.09 97
IV.ATVO.HHZ. 2023-03-10T06:45:28.60 0.1 undecidable manual S 143 15.9729 115 0.26 94
IV.PARC.HHZ. 2023-03-10T06:45:28.94 0.1 undecidable manual S 347 17.2716 113 0.19 95
IV.ATLO.HNZ. 2023-03-10T06:45:27.00 0.3 undecidable manual P 155 22.3554 108 0.04 73
IV.ATPC.HNZ. 2023-03-10T06:45:27.74 0.1 undecidable manual S 98 13.6752 118 0.1 98
IV.NARO.HHZ. 2023-03-10T06:45:27.34 0.3 undecidable manual P 62 26.6511 105 -0.45 67
IV.ATVA.EHZ. 2023-03-10T06:45:27.75 0.3 undecidable manual P 181 24.2535 107 0.43 67
IV.APEC.HHZ. 2023-03-10T06:45:27.42 0.1 undecidable manual S 57 12.5763 120 0.12 97
IV.PARC.HHZ. 2023-03-10T06:45:26.03 0.3 undecidable manual P 347 17.2716 113 0.03 74
IV.ATMI.HHZ. 2023-03-10T06:45:26.24 0.3 undecidable manual P 185 18.1707 112 0.07 73
IV.ATMC.EHZ. 2023-03-10T06:45:26.38 0.1 undecidable manual S 234 9.4794 128 -0.03 100
IV.ATBU.EHZ. 2023-03-10T06:45:26.77 0.3 undecidable manual P 96 21.0678 109 0.05 73
IV.ATPI.EHZ. 2023-03-10T06:45:26.61 0.1 undecidable manual S 119 10.5783 125 -0.09 98
IV.PIEI.HHZ. 2023-03-10T06:45:26.69 0.1 undecidable manual P 78 20.2686 110 0.12 96
IV.APEC.HHZ. 2023-03-10T06:45:25.23 0.1 undecidable manual P 57 12.5763 120 0.07 99
IV.CDCA.HNZ. 2023-03-10T06:45:25.86 0.3 undecidable manual S 225 6.1938 140 0.29 71
IV.ATPC.HNZ. 2023-03-10T06:45:25.39 0.1 undecidable manual P 98 13.6752 118 0.03 99
IV.ATVO.HHZ. 2023-03-10T06:45:25.68 0.3 undecidable manual P 143 15.9729 115 -0.08 73
IV.ATPI.EHZ. 2023-03-10T06:45:24.75 0.1 undecidable manual P 119 10.5783 125 -0.07 99
IV.BADI.EHZ. 2023-03-10T06:45:24.85 0.1 undecidable manual S 291 3.7962 153 -0.26 96
IV.ATMC.EHZ. 2023-03-10T06:45:24.61 0.1 undecidable manual P 234 9.4794 128 -0.04 100
IV.CDCA.HNZ. 2023-03-10T06:45:24.21 0.1 undecidable manual P 225 6.1938 140 0.05 100
IV.BADI.EHZ. 2023-03-10T06:45:23.82 0.1 undecidable manual P 291 3.7962 153 -0.08 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATVO.HNN. ML:1.0 0.000100847385 0.9408 AML other m 2023-03-10T06:45:29.06
IV.ATVO.HHN. ML:0.9 0.00007813211000000001 0.24 AML other m 2023-03-10T06:45:28.79
IV.ATVO.HHE. ML:0.8 0.00006167479000000001 0.1184 AML other m 2023-03-10T06:45:28.95
IV.PARC.HHE. ML:0.8 0.000057913714999999995 0.1184 AML other m 2023-03-10T06:45:29.36
IV.PARC.HHN. ML:0.7 0.000051098635 0.1984 AML other m 2023-03-10T06:45:29.23
IV.ATVO.HNE. ML:1.1 0.00012645415 2.8992 AML other m 2023-03-10T06:45:28.90
IV.PIEI.HNN. ML:1.0 0.000076361875 0.6208 AML other m 2023-03-10T06:45:28.43
IV.PIEI.HHE. ML:0.7 0.000036405584999999995 0.1216 AML other m 2023-03-10T06:45:30.06
IV.PIEI.HNE. ML:1.2 0.00013031636000000003 1.6416 AML other m 2023-03-10T06:45:30.01
IV.PIEI.HHN. ML:0.5 0.000023649835 0.08 AML other m 2023-03-10T06:45:30.59
IV.NARO.HHE. ML:0.4 0.0000127239945 0.0416 AML other m 2023-03-10T06:45:31.75
IV.NARO.HHN. ML:0.6 0.000017533705 0.0576 AML other m 2023-03-10T06:45:31.48
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