Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.9 on date 11-02-2023 and time 07:46:28 (UTC) in region 5 km NE Città di Castello (PG)

A magnitude ML 1.9 earthquake occured in region: 5 km NE Città di Castello (PG), on

  • 11-02-2023 07:46:28 (UTC)
  • 11-02-2023 08:46:28 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.4950, 12.2730 at 9 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 5 39913 39913
San Giustino PG 10 11297 51210
Monte Santa Maria Tiberina PG 11 1183 52393
Citerna PG 13 3531 55924
Monterchi AR 13 1757 57681
Sansepolcro AR 14 15884 73565
Apecchio PU 14 1882 75447
Pietralunga PG 15 2111 77558
Montone PG 15 1680 79238
Mercatello sul Metauro PU 18 1378 80616
Anghiari AR 18 5638 86254
Borgo Pace PU 18 606 86860

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km E of Arezzo (99543 inhabitants)
44 Km N of Perugia (166134 inhabitants)
67 Km SW of Rimini (147750 inhabitants)
69 Km SW of Pesaro (94582 inhabitants)
69 Km NW of Foligno (57155 inhabitants)
72 Km S of Cesena (96758 inhabitants)
72 Km SW of Fano (60888 inhabitants)
78 Km E of Siena (53903 inhabitants)
83 Km S of Forlì (117913 inhabitants)
87 Km E of Firenze (382808 inhabitants)
93 Km E of Scandicci (50609 inhabitants)
93 Km SE of Faenza (58541 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 1.9 2023-02-11
07:46:28		 43.4947 12.2728 9 2024-03-01
17:18:07		 Bollettino Sismico Italiano INGV 117252041
Reviewed
Rev100 		ML 1.7 2023-02-11
07:46:28		 43.4935 12.2728 9 2023-02-11
07:54:52		 Sala Sismica INGV-Roma 114336611
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-02-11 07:46:28 ± 0.04
Latitude 43.4947 ± 0.0027
Longitude 12.2728 ± 0.0025
Depth (km) 9 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 117252041

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 242
Semi-minor axis of confidence ellipse (meter) 241
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 327
Circular confidence region, given by single value of horizontal uncertainty (meter) 240.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 65
Number of associated phases, regardless of their use for origin computation 59
Number of defining phases 58
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) 0.78871
Number of stations at which the event was observed 32
Number of stations from which data was used for origin computation 31
Magnitudes information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.2
Num. used stations 24
Type of magnitude ML
Reference to an origin 117252041
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-05-11 14:42:47

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 36
Type of magnitude ML
Reference to an origin 114336611
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-02-11 07:54:52
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.TOLF.HHZ. 2023-02-11T07:47:11.58 3.0 undecidable manual S -0.24 0
IV.EL6.EHZ. 2023-02-11T07:46:50.53 0.3 undecidable manual S 105 69.2751 50 0.84 53
IV.MML1.EHZ. 2023-02-11T07:46:49.96 0.3 undecidable manual S 127 70.4739 50 -0.06 66
IV.SNTG.HHZ. 2023-02-11T07:46:47.82 0.3 undecidable manual S 116 60.0954 50 0.59 60
IV.CSP1.EHZ. 2023-02-11T07:46:43.91 0.1 undecidable manual P 120 87.5457 50 0.44 79
IV.SSFR.HHZ. 2023-02-11T07:46:42.22 0.6 undecidable manual S 99 41.5251 50 -0.06 47
IV.MPAG.EHZ. 2023-02-11T07:46:42.31 0.3 undecidable manual S 69 41.8248 50 -0.07 70
IV.FRON.EHZ. 2023-02-11T07:46:40.57 0.3 undecidable manual S 86 36.5412 50 -0.38 66
IV.MGAB.HHZ. 2023-02-11T07:46:40.45 0.6 positive manual P 191 65.8896 50 0.32 42
IV.EL6.EHZ. 2023-02-11T07:46:40.52 0.1 undecidable manual P 105 69.2751 50 -0.13 88
IV.MURB.HHZ. 2023-02-11T07:46:40.16 0.6 undecidable manual S 142 32.745 50 0.22 46
IV.MML1.EHZ. 2023-02-11T07:46:40.76 0.1 undecidable manual P 127 70.4739 50 -0.09 88
IV.ATSC.EHE. 2023-02-11T07:46:40.10 0.3 undecidable manual S 103 34.2435 50 -0.23 69
IV.CAFI.HHZ. 2023-02-11T07:46:39.38 0.3 undecidable manual S 233 30.747 50 -0.04 72
IV.CRE.HHZ. 2023-02-11T07:46:38.99 0.6 undecidable manual S 298 29.2485 107 0.05 48
IV.PE3.EHE. 2023-02-11T07:46:38.60 1.0 undecidable manual S 39 28.6491 108 -0.14 24
IV.NARO.HHZ. 2023-02-11T07:46:38.78 0.6 undecidable manual S 62 27.8499 108 0.29 46
IV.ATFO.HHZ. 2023-02-11T07:46:38.33 0.3 undecidable manual S 120 27.9498 108 -0.18 70
IV.SNTG.HHZ. 2023-02-11T07:46:38.84 0.1 undecidable manual P 116 60.0954 50 -0.39 84
IV.PIEI.HHZ. 2023-02-11T07:46:36.59 0.3 undecidable manual S 78 21.5673 113 0.16 71
IV.ATLO.HNZ. 2023-02-11T07:46:36.97 0.6 undecidable manual S 151 22.6551 112 0.18 47
IV.MPAG.EHZ. 2023-02-11T07:46:36.10 0.1 undecidable manual P 69 41.8248 50 -0.33 88
IV.ATVA.EHZ. 2023-02-11T07:46:36.86 0.6 undecidable manual S 178 23.9538 111 -0.35 45
IV.SSFR.HHZ. 2023-02-11T07:46:36.19 0.1 positive manual P 99 41.5251 50 -0.19 91
IV.FOSV.HNE. 2023-02-11T07:46:36.88 0.3 undecidable manual P 119 45.2214 50 -0.06 70
IV.ATBU.EHZ. 2023-02-11T07:46:36.34 0.6 undecidable manual S 95 22.2555 112 -0.32 46
IV.ATVO.HHZ. 2023-02-11T07:46:35.15 0.3 undecidable manual S 139 16.4724 119 0.3 70
IV.MURB.HHZ. 2023-02-11T07:46:35.08 0.6 undecidable manual P 142 32.745 50 0.05 48
IV.PARC.HHZ. 2023-02-11T07:46:35.08 0.3 undecidable manual S 351 17.2716 118 -0.01 74
IV.ATSC.EHE. 2023-02-11T07:46:35.15 0.3 undecidable manual P 103 34.2435 50 -0.1 70
IV.FRON.EHZ. 2023-02-11T07:46:35.27 0.6 undecidable manual P 86 36.5412 50 -0.34 45
IV.ATMI.HHZ. 2023-02-11T07:46:35.44 0.3 undecidable manual S 181 17.7711 117 0.19 71
IV.CPGN.EHZ. 2023-02-11T07:46:35.67 0.3 undecidable manual P 6 34.2435 50 0.42 66
IV.ATFO.HHZ. 2023-02-11T07:46:34.02 0.3 negative manual P 120 27.9498 108 -0.18 70
IV.APEC.HHZ. 2023-02-11T07:46:34.27 0.3 undecidable manual S 59 13.7751 123 0.23 71
IV.CRE.HHZ. 2023-02-11T07:46:34.36 1.0 positive manual P 298 29.2485 107 -0.09 24
IV.PE3.EHE. 2023-02-11T07:46:34.24 0.1 undecidable manual P 39 28.6491 108 -0.09 95
IV.ATPC.HNZ. 2023-02-11T07:46:34.53 0.6 undecidable manual S 96 14.874 121 0.16 48
IV.CAFI.HHZ. 2023-02-11T07:46:34.65 0.1 undecidable manual P 233 30.747 50 -0.07 95
IV.SSP9.EHZ. 2023-02-11T07:46:34.25 0.3 undecidable manual S 308 14.3745 122 0.04 74
IV.NARO.HHZ. 2023-02-11T07:46:34.76 0.6 undecidable manual P 62 27.8499 108 0.57 42
IV.ATPI.EHZ. 2023-02-11T07:46:33.33 0.3 undecidable manual S 115 11.4774 128 -0.07 74
IV.ATVA.EHZ. 2023-02-11T07:46:33.36 0.1 undecidable manual P 178 23.9538 111 -0.09 96
IV.ATBU.EHZ. 2023-02-11T07:46:32.80 0.1 undecidable manual P 95 22.2555 112 -0.33 91
IV.SSP9.EHZ. 2023-02-11T07:46:32.08 0.6 positive manual P 308 14.3745 122 0.36 46
IV.PIEI.HHZ. 2023-02-11T07:46:32.87 0.6 undecidable manual P 78 21.5673 113 -0.13 48
IV.ATVO.HHZ. 2023-02-11T07:46:32.27 1.0 negative manual P 139 16.4724 119 0.19 24
IV.CDCA.HNZ. 2023-02-11T07:46:32.00 0.6 undecidable manual S 218 5.0949 151 0.07 50
IV.PARC.HHZ. 2023-02-11T07:46:32.28 1.0 undecidable manual P 351 17.2716 118 0.05 24
IV.ATLO.HNZ. 2023-02-11T07:46:32.91 0.1 undecidable manual P 151 22.6551 112 -0.29 92
IV.ATMC.EHZ. 2023-02-11T07:46:32.27 0.6 undecidable manual S 231 8.3805 137 -0.33 47
IV.ATMI.HHZ. 2023-02-11T07:46:32.54 0.1 undecidable manual P 181 17.7711 117 0.22 94
IV.BADI.EHZ. 2023-02-11T07:46:31.23 0.3 undecidable manual S 306 2.7972 163 -0.39 70
IV.ATPI.EHZ. 2023-02-11T07:46:31.32 0.3 positive manual P 115 11.4774 128 0.07 74
IV.APEC.HHZ. 2023-02-11T07:46:31.74 0.1 positive manual P 59 13.7751 123 0.12 97
IV.ATPC.HNZ. 2023-02-11T07:46:31.83 0.1 undecidable manual P 96 14.874 121 0.02 99
IV.ATMC.EHZ. 2023-02-11T07:46:30.93 0.1 undecidable manual P 231 8.3805 137 0.15 97
IV.BADI.EHZ. 2023-02-11T07:46:30.16 0.1 undecidable manual P 306 2.7972 163 -0.06 100
IV.CDCA.HNZ. 2023-02-11T07:46:30.52 0.1 undecidable manual P 218 5.0949 151 0.12 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATPI.EHN. ML:1.6 0.000528 0.2 AML other m 2023-02-11T07:46:33.39
IV.ATPI.EHE. ML:1.6 0.000539 0.62 AML other m 2023-02-11T07:46:33.49
IV.PARC.HHE. ML:2.0 0.00092 0.8 AML other m 2023-02-11T07:46:35.56
IV.PARC.HHN. ML:2.0 0.0008810000000000001 0.24 AML other m 2023-02-11T07:46:35.62
IV.ATVO.HHE. ML:2.0 0.000853 0.46 AML other m 2023-02-11T07:46:35.66
IV.ATVO.HNE. ML:2.0 0.0008135 0.46 AML other m 2023-02-11T07:46:35.67
IV.ATVO.HHN. ML:2.0 0.001023 0.22 AML other m 2023-02-11T07:46:35.70
IV.ATVO.HNN. ML:2.0 0.001 0.22 AML other m 2023-02-11T07:46:35.70
IV.PIEI.HHN. ML:1.6 0.00028300000000000005 0.22 AML other m 2023-02-11T07:46:36.87
IV.PIEI.HNN. ML:1.7 0.00032599999999999996 1.62 AML other m 2023-02-11T07:46:37.07
IV.PIEI.HNE. ML:1.8 0.00046750000000000003 0.36 AML other m 2023-02-11T07:46:37.65
IV.PIEI.HHE. ML:1.8 0.000477 0.36 AML other m 2023-02-11T07:46:37.65
IV.ATFO.HHE. ML:1.6 0.0002275 1.44 AML other m 2023-02-11T07:46:38.12
IV.ATFO.HHN. ML:1.7 0.0002615 0.28 AML other m 2023-02-11T07:46:39.12
IV.MURB.HHE. ML:2.1 0.0005455 0.28 AML other m 2023-02-11T07:46:40.59
IV.FRON.EHE. ML:1.7 0.0002055 0.42 AML other m 2023-02-11T07:46:40.88
IV.FRON.EHN. ML:1.7 0.00019800000000000002 0.14 AML other m 2023-02-11T07:46:40.89
IV.MURB.HHN. ML:2.0 0.000442 0.28 AML other m 2023-02-11T07:46:41.29
IV.SSFR.HNN. ML:2.1 0.0004065 0.34 AML other m 2023-02-11T07:46:42.44
IV.SSFR.HHN. ML:2.0 0.00035 0.92 AML other m 2023-02-11T07:46:42.47
IV.CPGN.EHN. ML:1.5 0.000135 0.56 AML other m 2023-02-11T07:46:43.59
IV.SSFR.HNE. ML:2.0 0.000363 0.6 AML other m 2023-02-11T07:46:43.64
IV.SSFR.HHE. ML:2.0 0.00036750000000000004 0.14 AML other m 2023-02-11T07:46:43.65
IV.CPGN.EHE. ML:1.6 0.00016599999999999997 1.58 AML other m 2023-02-11T07:46:43.99
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