Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.0 on date 11-02-2023 and time 07:34:48 (UTC) in region 5 km NE Città di Castello (PG)

A magnitude ML 1.0 earthquake occured in region: 5 km NE Città di Castello (PG), on

  • 11-02-2023 07:34:48 (UTC)
  • 11-02-2023 08:34:48 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.4950, 12.2680 at 8 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 12 3531 55924
Monterchi AR 13 1757 57681
Sansepolcro AR 13 15884 73565
Apecchio PU 14 1882 75447
Pietralunga PG 15 2111 77558
Montone PG 15 1680 79238
Anghiari AR 18 5638 84876
Mercatello sul Metauro PU 18 1378 86254
Borgo Pace PU 18 606 86860

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km E of Arezzo (99543 inhabitants)
44 Km N of Perugia (166134 inhabitants)
67 Km SW of Rimini (147750 inhabitants)
70 Km NW of Foligno (57155 inhabitants)
70 Km SW of Pesaro (94582 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)
92 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 1.0 2023-02-11
07:34:48		 43.495 12.2682 8 2024-03-01
17:18:07		 Bollettino Sismico Italiano INGV 117251881
Reviewed
Rev100 		ML 1.0 2023-02-11
07:34:48		 43.4962 12.2655 9 2023-02-11
07:40:07		 Sala Sismica INGV-Roma 114336261
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-02-11 07:34:48 ± 0.07
Latitude 43.4950 ± 0.0027
Longitude 12.2682 ± 0.0037
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 117251881

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 277
Semi-minor axis of confidence ellipse (meter) 71
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 45
Circular confidence region, given by single value of horizontal uncertainty (meter) 280.0
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 43
Number of defining phases 43
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0.02248
Epicentral distance of station farthest from the epicenter (degree) 0.30847
Number of stations at which the event was observed 24
Number of stations from which data was used for origin computation 24
Magnitudes information

ML:1.0

Field Value
Value 1.0
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 117251881
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-05-12 13:07:09

ML:1.0

Field Value
Value 1.0
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 114336261
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-02-11 07:40:07
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MURB.HHZ. 2023-02-11T07:35:00.53 0.6 undecidable manual S 141 33.0447 104 0.02 48
IV.NARO.HHZ. 2023-02-11T07:34:59.26 0.6 undecidable manual S 63 28.2495 106 0.36 45
IV.ATVA.EHZ. 2023-02-11T07:34:57.48 0.6 undecidable manual S 177 24.0537 109 -0.05 48
IV.ATLO.HNZ. 2023-02-11T07:34:57.17 0.6 undecidable manual S 151 22.8549 110 0.02 49
IV.PIEI.HHZ. 2023-02-11T07:34:56.67 0.6 undecidable manual S 78 21.9669 111 -0.17 47
IV.TSM2.DHZ.01 2023-02-11T07:34:56.24 0.6 undecidable manual S 121 20.9679 112 -0.28 46
IV.ATBU.EHZ. 2023-02-11T07:34:56.94 0.6 undecidable manual S 95 22.6551 110 -0.13 48
IV.CPGN.EHZ. 2023-02-11T07:34:56.00 0.3 undecidable manual P 7 34.2435 50 0.26 68
IV.TB02.DHZ.01 2023-02-11T07:34:55.83 0.6 undecidable manual S 141 17.871 115 0.28 47
IV.PARC.HHZ. 2023-02-11T07:34:55.35 0.3 undecidable manual S 352 17.1717 116 0.02 74
IV.CAFI.HHZ. 2023-02-11T07:34:55.02 0.3 positive manual P 233 30.5472 105 -0.01 72
IV.ATVO.HHZ. 2023-02-11T07:34:55.28 0.6 undecidable manual S 138 16.7721 116 0.08 49
IV.MURB.HHZ. 2023-02-11T07:34:55.35 0.6 negative manual P 141 33.0447 104 -0.17 46
IV.TB01.DHZ.01 2023-02-11T07:34:55.97 0.6 undecidable manual S 133 18.4704 114 0.25 47
IV.TSM3.DHZ.01 2023-02-11T07:34:54.62 0.6 undecidable manual S 150 14.2746 120 0.18 48
IV.NARO.HHZ. 2023-02-11T07:34:54.94 0.1 undecidable manual P 63 28.2495 106 0.35 90
IV.ATPC.HNZ. 2023-02-11T07:34:54.85 0.6 undecidable manual S 96 15.2736 119 0.11 48
IV.APEC.HNZ. 2023-02-11T07:34:54.37 0.6 undecidable manual S 60 14.0748 121 -0.01 50
IV.TB03.DHZ.01 2023-02-11T07:34:54.99 0.6 undecidable manual S 132 15.4734 118 0.2 48
IV.CRE.HHZ. 2023-02-11T07:34:54.32 0.1 undecidable manual P 298 28.9488 106 -0.41 89
IV.ATLO.HNZ. 2023-02-11T07:34:53.16 0.1 undecidable manual P 151 22.8549 110 -0.42 90
IV.PIEI.HHZ. 2023-02-11T07:34:53.22 1.0 positive manual P 78 21.9669 111 -0.18 24
IV.TB01.DHZ.01 2023-02-11T07:34:53.14 0.1 undecidable manual P 133 18.4704 114 0.39 91
IV.ATVA.EHZ. 2023-02-11T07:34:53.99 0.1 undecidable manual P 177 24.0537 109 0.19 94
IV.TSM2.DHZ.01 2023-02-11T07:34:53.18 0.1 undecidable manual P 121 20.9679 112 -0.03 97
IV.ATPI.EHZ. 2023-02-11T07:34:53.75 0.6 undecidable manual S 114 11.877 125 0.02 50
IV.ATBU.EHZ. 2023-02-11T07:34:53.33 0.1 undecidable manual P 95 22.6551 110 -0.2 94
IV.TB03.DHZ.01 2023-02-11T07:34:52.22 0.1 undecidable manual P 132 15.4734 118 0 99
IT.SNS1.HNZ. 2023-02-11T07:34:52.26 0.6 undecidable manual P 308 14.0748 121 0.29 47
IV.ATPC.HNZ. 2023-02-11T07:34:52.04 0.1 undecidable manual P 96 15.2736 119 -0.14 96
IV.ATMC.EHZ. 2023-02-11T07:34:52.86 0.6 undecidable manual S 229 8.0808 136 0.13 49
IV.TB02.DHZ.01 2023-02-11T07:34:52.27 0.1 undecidable manual P 141 17.871 115 -0.38 91
IV.CDCA.HNZ. 2023-02-11T07:34:52.20 0.6 undecidable manual S 214 4.8951 149 0.14 49
IV.APEC.HNZ. 2023-02-11T07:34:52.00 0.1 undecidable manual P 60 14.0748 121 0.02 99
IV.PARC.HHZ. 2023-02-11T07:34:52.56 1.0 positive manual P 352 17.1717 116 0.03 25
IV.ATVO.HHZ. 2023-02-11T07:34:52.08 0.1 undecidable manual P 138 16.7721 116 -0.37 92
IV.ATMI.HHZ. 2023-02-11T07:34:52.77 0.6 positive manual P 180 17.871 115 0.13 48
IV.ATPI.EHZ. 2023-02-11T07:34:51.58 0.1 negative manual P 114 11.877 125 -0.02 99
IV.BADI.EHZ. 2023-02-11T07:34:51.44 0.3 undecidable manual S 310 2.4975 163 -0.28 72
IV.TSM3.DHZ.01 2023-02-11T07:34:51.96 0.1 undecidable manual P 150 14.2746 120 -0.05 98
IV.ATMC.EHZ. 2023-02-11T07:34:51.27 0.1 undecidable manual P 229 8.0808 136 0.25 95
IV.BADI.EHZ. 2023-02-11T07:34:50.38 0.1 undecidable manual P 310 2.4975 163 -0.06 100
IV.CDCA.HNZ. 2023-02-11T07:34:50.80 0.1 undecidable manual P 214 4.8951 149 0.16 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATPI.EHE. ML:1.0 0.00011249999999999998 0.1 AML other m 2023-02-11T07:34:53.67
IV.ATPI.EHN. ML:1.1 0.000151 0.08 AML other m 2023-02-11T07:34:53.88
IV.PARC.HHE. ML:1.1 0.000113 0.8 AML other m 2023-02-11T07:34:55.82
IV.PARC.HHN. ML:1.0 0.0001017 0.18 AML other m 2023-02-11T07:34:55.88
IV.PIEI.HHE. ML:1.1 0.00007945 1.48 AML other m 2023-02-11T07:34:57.87
IV.PIEI.HHN. ML:0.8 0.0000475 1.12 AML other m 2023-02-11T07:34:57.09
IV.NARO.HHN. ML:0.8 0.00002978823 0.0832 AML other m 2023-02-11T07:34:59.62
IV.MURB.HHN. ML:1.2 0.00006349277000000001 0.9568 AML other m 2023-02-11T07:35:00.05
IV.NARO.HHE. ML:0.6 0.000020039830000000003 0.1216 AML other m 2023-02-11T07:35:00.61
IV.MURB.HHE. ML:1.2 0.0000733 0.28 AML other m 2023-02-11T07:35:00.79
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