Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 16-04-2023 and time 18:04:54 (Italy) in region 5 km NE Città di Castello (PG)

A magnitude ML 1.7 earthquake occured in region: 5 km NE Città di Castello (PG), on

  • 16-04-2023 16:04:54 (UTC)
  • 16-04-2023 18:04:54 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.5000, 12.2590 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
Città di Castello PG 5 39913 39913
San Giustino PG 9 11297 51210
Monte Santa Maria Tiberina PG 10 1183 52393
Citerna PG 11 3531 55924
Monterchi AR 12 1757 57681
Sansepolcro AR 12 15884 73565
Apecchio PU 15 1882 75447
Pietralunga PG 16 2111 77558
Montone PG 16 1680 79238
Anghiari AR 17 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)
45 Km N of Perugia (166134 inhabitants)
67 Km SW of Rimini (147750 inhabitants)
70 Km SW of Pesaro (94582 inhabitants)
70 Km NW of Foligno (57155 inhabitants)
71 Km S of Cesena (96758 inhabitants)
72 Km SW of Fano (60888 inhabitants)
78 Km E of Siena (53903 inhabitants)
82 Km S of Forlì (117913 inhabitants)
86 Km E of Firenze (382808 inhabitants)
91 Km E of Scandicci (50609 inhabitants)
92 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 1.7 2023-04-16
16:04:54		 43.5003 12.2593 10 2024-03-01
17:18:16		 Bollettino Sismico Italiano INGV 121071511
Reviewed
Rev100 		ML 1.7 2023-04-16
16:04:54		 43.5043 12.2593 10 2023-04-16
16:11:23		 Sala Sismica INGV-Roma 116435501
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-04-16 16:04:54 ± 0.04
Latitude 43.5003 ± 0.0018
Longitude 12.2593 ± 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 121071511

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 230
Semi-minor axis of confidence ellipse (meter) 200
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 208
Circular confidence region, given by single value of horizontal uncertainty (meter) 230.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 67
Number of associated phases, regardless of their use for origin computation 67
Number of defining phases 57
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) 0.49463
Number of stations at which the event was observed 40
Number of stations from which data was used for origin computation 30
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 26
Type of magnitude ML
Reference to an origin 116435501
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-04-16 16:11:23

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 30
Type of magnitude ML
Reference to an origin 121071511
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2024-01-24 14:37:00
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SNAL.HHZ. 2023-04-16T16:06:21.35 3.0 undecidable manual Sn 0.24 0
GU.CANO.HHZ. 2023-04-16T16:06:19.81 3.0 undecidable manual Sg 17.879999 0
IT.GLNS.HNZ. 2023-04-16T16:06:01.59 3.0 undecidable manual Sn 0.58 0
ST.OZOL.EHZ. 2023-04-16T16:06:00.66 3.0 undecidable manual Sn -6.1 0
IV.MCRV.HHZ. 2023-04-16T16:05:43.15 3.0 undecidable manual Pn 2.08 0
IV.POFI.HHZ. 2023-04-16T16:05:30.27 3.0 undecidable manual Pg 8.42 0
IV.SSFR.HHZ. 2023-04-16T16:05:08.83 0.6 undecidable manual S 99 42.7239 50 0.35 44
IV.MGAB.HHZ. 2023-04-16T16:05:07.00 3.0 positive manual Pg 5.74 0
IV.FRON.EHZ. 2023-04-16T16:05:07.16 0.6 undecidable manual S 87 37.5291 50 0.05 47
IV.ATSC.EHE. 2023-04-16T16:05:06.69 0.6 undecidable manual S 104 35.4423 50 0.16 46
IV.CAFI.HNZ. 2023-04-16T16:05:05.31 0.6 undecidable manual S 231 30.2475 50 0.14 47
IV.FNVD.HHZ. 2023-04-16T16:05:05.24 3.0 undecidable manual Pg 0.94 0
IV.TSM1.DHE.01 2023-04-16T16:05:05.74 0.6 undecidable manual S 122 32.2455 50 0.06 48
IV.PE3.EHZ. 2023-04-16T16:05:05.47 0.6 undecidable manual S 41 28.8489 50 0.68 41
IV.BDI.HHZ. 2023-04-16T16:05:05.10 3.0 positive manual Pn -2.08 0
IV.CRE.HHZ. 2023-04-16T16:05:04.51 0.6 undecidable manual S 298 28.0497 50 -0.05 48
IV.ARVD.HHZ. 2023-04-16T16:05:04.46 0.6 undecidable manual P 90 54.9006 50 0.07 46
IV.ATFO.HHZ. 2023-04-16T16:05:04.81 0.6 undecidable manual S 120 29.1486 50 -0.06 48
IV.NARO.HHZ. 2023-04-16T16:05:04.28 0.6 undecidable manual S 64 28.5492 50 -0.43 44
IV.ATLO.EHE. 2023-04-16T16:05:03.21 0.6 undecidable manual S 150 23.754 113 -0.07 48
IV.ATBU.EHZ. 2023-04-16T16:05:03.45 0.6 undecidable manual S 97 23.4543 113 0.27 46
IV.SSFR.HHZ. 2023-04-16T16:05:02.34 0.3 undecidable manual P 99 42.7239 50 -0.17 69
IV.TSM2.DHN.01 2023-04-16T16:05:02.57 0.6 undecidable manual S 122 21.867 114 -0.12 48
IV.MPAG.EHZ. 2023-04-16T16:05:02.42 0.1 undecidable manual P 70 42.7239 50 -0.09 93
IV.ATVA.EHE. 2023-04-16T16:05:02.66 0.6 undecidable manual S 175 24.6531 112 -0.93 37
IV.PIEI.HHZ. 2023-04-16T16:05:02.99 0.6 undecidable manual S 80 22.5552 114 0.09 48
IV.ATSC.EHE. 2023-04-16T16:05:01.40 0.3 undecidable manual P 104 35.4423 50 0.01 72
IV.TB02.DHZ.01 2023-04-16T16:05:01.86 0.6 undecidable manual S 140 18.7701 118 0.13 48
IV.ATMI.HHZ. 2023-04-16T16:05:01.70 0.6 undecidable manual S 178 18.4704 118 0.08 49
IV.FRON.EHZ. 2023-04-16T16:05:01.43 0.3 undecidable manual P 87 37.5291 50 -0.29 67
IV.TB01.DHZ.01 2023-04-16T16:05:01.97 0.6 undecidable manual S 133 19.3695 117 0.06 49
IV.ATVO.HHZ. 2023-04-16T16:05:01.56 0.6 undecidable manual S 138 17.6712 119 0.17 48
IV.MURB.HHZ. 2023-04-16T16:05:01.10 0.3 undecidable manual P 141 33.9438 50 -0.05 71
IV.CAFI.HNZ. 2023-04-16T16:05:00.71 0.3 undecidable manual P 231 30.2475 50 0.11 71
IV.PE3.EHZ. 2023-04-16T16:05:00.32 0.1 undecidable manual P 41 28.8489 50 -0.06 96
IV.TB03.DH1.25 2023-04-16T16:05:00.16 0.6 undecidable manual S 132 16.3725 121 -0.84 39
IV.SSP9.EHZ. 2023-04-16T16:05:00.07 0.6 undecidable manual S 308 13.1757 127 0 50
IV.APEC.HHZ. 2023-04-16T16:05:00.40 0.6 undecidable manual S 63 14.4744 124 -0.04 49
IV.CRE.HHZ. 2023-04-16T16:05:00.28 0.3 undecidable manual P 298 28.0497 50 0.03 72
IV.ATPC.HHE. 2023-04-16T16:05:00.97 0.6 undecidable manual S 98 16.0728 122 0.06 49
IV.ATFO.HHZ. 2023-04-16T16:05:00.40 0.3 undecidable manual P 120 29.1486 50 -0.03 72
IV.TSM3.DHE.01 2023-04-16T16:05:00.58 0.6 undecidable manual S 149 15.1737 123 -0.06 49
IV.PARC.HHZ. 2023-04-16T16:05:00.74 0.6 undecidable manual S 354 16.5723 121 -0.31 47
IV.TSM1.DHE.01 2023-04-16T16:05:00.85 0.3 undecidable manual P 122 32.2455 50 -0.04 72
IV.ATPI.EHZ. 2023-04-16T16:04:59.95 0.6 undecidable manual S 115 12.7761 128 -0.01 50
IV.ATBU.EHZ. 2023-04-16T16:04:59.51 0.1 undecidable manual P 97 23.4543 113 0.06 97
IV.PIEI.HHZ. 2023-04-16T16:04:59.18 0.1 undecidable manual P 80 22.5552 114 -0.11 96
IV.ATVA.EHE. 2023-04-16T16:04:59.63 0.3 undecidable manual P 175 24.6531 112 -0.06 72
IV.ATLO.EHE. 2023-04-16T16:04:59.46 0.1 undecidable manual P 150 23.754 113 -0.05 97
IV.TSM2.DHN.01 2023-04-16T16:04:59.12 0.1 undecidable manual P 122 21.867 114 -0.05 97
IV.NARO.HHZ. 2023-04-16T16:04:59.97 0.1 undecidable manual P 64 28.5492 50 -0.37 90
IV.SFI.EHZ. 2023-04-16T16:04:58.43 3.0 negative manual P -0.83 0
IV.ATPC.HHE. 2023-04-16T16:04:58.22 0.3 undecidable manual P 98 16.0728 122 0.08 73
IV.TB01.DHZ.01 2023-04-16T16:04:58.84 0.3 undecidable manual P 133 19.3695 117 0.12 72
IV.TSM3.DHE.01 2023-04-16T16:04:58.11 0.1 undecidable manual P 149 15.1737 123 0.12 97
IV.PARC.HHZ. 2023-04-16T16:04:58.16 0.1 undecidable manual P 354 16.5723 121 -0.06 98
IV.CDCA.HNZ. 2023-04-16T16:04:58.24 0.3 undecidable manual S 204 5.0949 153 0.02 76
IV.ATMI.HHZ. 2023-04-16T16:04:58.75 0.1 undecidable manual P 178 18.4704 118 0.2 95
IV.TB03.DH1.25 2023-04-16T16:04:58.27 0.1 undecidable manual P 132 16.3725 121 0.08 98
IV.TB02.DHZ.01 2023-04-16T16:04:58.80 0.1 undecidable manual P 140 18.7701 118 0.18 95
IV.ATVO.HHZ. 2023-04-16T16:04:58.56 0.1 undecidable manual P 138 17.6712 119 0.14 96
IV.ATMC.EHZ. 2023-04-16T16:04:58.56 0.3 undecidable manual S 222 7.9809 141 -0.21 72
IV.ATPI.EHZ. 2023-04-16T16:04:57.65 0.1 undecidable manual P 115 12.7761 128 0.05 99
IV.SSP9.EHZ. 2023-04-16T16:04:57.79 0.1 undecidable manual P 308 13.1757 127 0.14 97
IV.APEC.HHZ. 2023-04-16T16:04:57.94 0.1 positive manual P 63 14.4744 124 0.08 98
IV.ATMC.EHZ. 2023-04-16T16:04:56.97 0.1 undecidable manual P 222 7.9809 141 0.06 99
IV.CDCA.HNZ. 2023-04-16T16:04:56.64 0.1 undecidable manual P 204 5.0949 153 0.05 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATPI.EHE. ML:1.7 0.0005605 0.32 AML other m 2023-04-16T16:05:00.20
IV.ATPI.HNE. ML:1.7 0.0005795 0.32 AML other m 2023-04-16T16:05:00.20
IV.ATPI.EHN. ML:1.7 0.0005834999999999999 1.24 AML other m 2023-04-16T16:05:00.98
IV.ATPI.HNN. ML:1.7 0.0005669999999999999 1.24 AML other m 2023-04-16T16:05:00.36
IV.APEC.HHN. ML:1.9 0.000778 0.24 AML other m 2023-04-16T16:05:00.64
IV.PARC.HHE. ML:1.8 0.000557 1.24 AML other m 2023-04-16T16:05:01.22
IV.PARC.HHN. ML:1.9 0.00075 0.26 AML other m 2023-04-16T16:05:01.21
IV.APEC.HHE. ML:1.7 0.0005045 0.68 AML other m 2023-04-16T16:05:01.52
IV.ATVO.HHN. ML:1.5 0.000284 0.18 AML other m 2023-04-16T16:05:01.65
IV.ATMI.HHE. ML:1.7 0.0004355 0.32 AML other m 2023-04-16T16:05:01.97
IV.ATVO.HHE. ML:1.8 0.0005185 0.3 AML other m 2023-04-16T16:05:02.46
IV.PIEI.HHN. ML:1.4 0.0001805 0.34 AML other m 2023-04-16T16:05:03.43
IV.PIEI.HHE. ML:1.6 0.0002965 0.08 AML other m 2023-04-16T16:05:03.51
IV.NARO.HHN. ML:1.4 0.0001295 0.32 AML other m 2023-04-16T16:05:04.67
IV.NARO.HHE. ML:1.2 0.00008 0.32 AML other m 2023-04-16T16:05:04.83
IV.ATMI.HHN. ML:1.6 0.0002845 1.58 AML other m 2023-04-16T16:05:04.07
IV.ATFO.HHE. ML:1.5 0.000164 0.6 AML other m 2023-04-16T16:05:05.94
IV.CRE.HHN. ML:1.3 0.0001076 1.34 AML other m 2023-04-16T16:05:06.85
IV.CRE.HHE. ML:1.1 0.00007039999999999999 0.58 AML other m 2023-04-16T16:05:06.42
IV.ATFO.HHN. ML:1.5 0.00014544999999999998 0.74 AML other m 2023-04-16T16:05:06.81
IV.FRON.EHE. ML:1.5 0.0001167 0.46 AML other m 2023-04-16T16:05:07.66
IV.FRON.EHN. ML:1.6 0.00014000000000000001 0.44 AML other m 2023-04-16T16:05:08.74
IV.SSFR.HNN. ML:2.1 0.00042699999999999997 1.68 AML other m 2023-04-16T16:05:08.12
IV.MURB.HHN. ML:1.7 0.0001885 0.64 AML other m 2023-04-16T16:05:09.54
IV.SSFR.HNE. ML:2.0 0.000301 0.2 AML other m 2023-04-16T16:05:09.78
IV.SSFR.HHE. ML:1.9 0.00028100000000000005 0.2 AML other m 2023-04-16T16:05:09.88
IV.SSFR.HHN. ML:2.0 0.0002895 0.2 AML other m 2023-04-16T16:05:10.11
IV.MURB.HHE. ML:1.7 0.000219 0.32 AML other m 2023-04-16T16:05:10.35
IV.FNVD.HHN. ML:2.5 0.000229 0.58 AML other m 2023-04-16T16:05:29.70
IV.FNVD.HHE. ML:2.4 0.000191 0.6 AML other m 2023-04-16T16:05:29.80
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