Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 16-04-2023 and time 18:54:40 (Italy) in region 5 km NE Città di Castello (PG)

A magnitude ML 1.3 earthquake occured in region: 5 km NE Città di Castello (PG), on

  • 16-04-2023 16:54:40 (UTC)
  • 16-04-2023 18:54:40 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.5050, 12.2600 at 10 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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 8 11297 51210
Monte Santa Maria Tiberina PG 11 1183 52393
Citerna PG 12 3531 55924
Sansepolcro AR 12 15884 71808
Monterchi AR 12 1757 73565
Apecchio PU 14 1882 75447
Pietralunga PG 16 2111 77558
Montone PG 17 1680 79238
Anghiari AR 17 5638 84876
Mercatello sul Metauro PU 17 1378 86254
Borgo Pace PU 17 606 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)
69 Km SW of Pesaro (94582 inhabitants)
70 Km S of Cesena (96758 inhabitants)
71 Km NW of Foligno (57155 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
Reviewed
Rev100 		ML 1.3 2023-04-16
16:54:40		 43.5052 12.2598 10 2023-04-16
17:07:24		 Sala Sismica INGV-Roma 116438581
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-04-16 16:54:40 ± 0.04
Latitude 43.5052 ± 0.0027
Longitude 12.2598 ± 0.0037
Depth (km) 10 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 116438581

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 269
Semi-minor axis of confidence ellipse (meter) 249
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 53
Circular confidence region, given by single value of horizontal uncertainty (meter) 270.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 66
Number of associated phases, regardless of their use for origin computation 25
Number of defining phases 25
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) 0.05036
Epicentral distance of station farthest from the epicenter (degree) 0.27609
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 13
Magnitude information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.1
Num. used stations 10
Type of magnitude ML
Reference to an origin 116438581
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-04-16 17:07:24
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CAFI.HHZ. 2023-04-16T16:54:50.97 0.3 undecidable manual S 231 30.6471 50 0.05 72
IV.NARO.HHZ. 2023-04-16T16:54:49.92 0.6 undecidable manual S 65 28.3494 50 -0.37 45
IV.CRE.HHZ. 2023-04-16T16:54:49.68 0.6 undecidable manual S 297 27.75 50 -0.47 44
IV.PIEI.HHZ. 2023-04-16T16:54:48.76 0.6 undecidable manual S 81 22.3554 114 0.19 47
IV.ATMI.HHZ. 2023-04-16T16:54:47.33 0.3 undecidable manual S 178 18.9699 118 -0.18 71
IV.ATVO.HHZ. 2023-04-16T16:54:47.23 0.3 undecidable manual S 139 18.0708 119 0 74
IV.PARC.HHZ. 2023-04-16T16:54:46.47 0.3 undecidable manual S 354 15.9729 122 -0.14 72
IV.CAFI.HHZ. 2023-04-16T16:54:46.43 0.1 undecidable manual P 231 30.6471 50 0.11 94
IV.CRE.HHZ. 2023-04-16T16:54:46.31 0.3 undecidable manual P 297 27.75 50 0.43 66
IV.APEC.HHZ. 2023-04-16T16:54:46.14 0.3 undecidable manual S 65 14.1747 125 0.06 74
IV.SSP9.EHE. 2023-04-16T16:54:45.63 0.6 undecidable manual S 306 12.876 128 -0.09 49
IV.NARO.HHZ. 2023-04-16T16:54:45.72 0.1 undecidable manual P 65 28.3494 50 -0.24 92
IV.ATPI.EHZ. 2023-04-16T16:54:45.58 0.3 undecidable manual S 118 12.9759 128 -0.17 72
IV.PE3.EHZ. 2023-04-16T16:54:45.98 0.1 undecidable manual P 42 28.4493 50 0 97
IV.ATMI.HHZ. 2023-04-16T16:54:44.49 0.1 undecidable manual P 178 18.9699 118 0.13 96
IV.ATVO.HHZ. 2023-04-16T16:54:44.40 0.1 undecidable manual P 139 18.0708 119 0.2 95
IV.PIEI.HHZ. 2023-04-16T16:54:44.90 0.1 undecidable manual P 81 22.3554 114 -0.07 96
IV.ATMC.EHN. 2023-04-16T16:54:44.24 0.3 undecidable manual S 220 8.3805 140 -0.37 70
IV.ATPI.EHZ. 2023-04-16T16:54:43.41 0.1 undecidable manual P 118 12.9759 128 0.07 98
IV.APEC.HHZ. 2023-04-16T16:54:43.69 0.1 positive manual P 65 14.1747 125 0.16 96
IV.SSP9.EHE. 2023-04-16T16:54:43.51 0.3 undecidable manual P 306 12.876 128 0.19 72
IV.PARC.HHZ. 2023-04-16T16:54:43.91 0.1 positive manual P 354 15.9729 122 0.07 97
IV.CDCA.HNE. 2023-04-16T16:54:43.98 0.3 undecidable manual S 202 5.5944 151 -0.07 74
IV.ATMC.EHN. 2023-04-16T16:54:42.69 0.1 undecidable manual P 220 8.3805 140 0.01 100
IV.CDCA.HNE. 2023-04-16T16:54:42.41 0.1 undecidable manual P 202 5.5944 151 0.05 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATPI.EHE. ML:1.3 0.000209 0.06 AML other m 2023-04-16T16:54:45.96
IV.ATPI.EHN. ML:1.3 0.000199 0.08 AML other m 2023-04-16T16:54:46.11
IV.APEC.HHN. ML:1.4 0.00023549999999999998 0.3 AML other m 2023-04-16T16:54:46.38
IV.APEC.HHE. ML:1.4 0.000241 0.48 AML other m 2023-04-16T16:54:46.68
IV.PARC.HHN. ML:1.5 0.0002945 1.74 AML other m 2023-04-16T16:54:47.94
IV.PARC.HHE. ML:1.4 0.000202 1.36 AML other m 2023-04-16T16:54:47.18
IV.ATVO.HHE. ML:1.3 0.0001595 0.32 AML other m 2023-04-16T16:54:48.06
IV.ATVO.HHN. ML:1.1 0.00010025000000000001 0.66 AML other m 2023-04-16T16:54:48.02
IV.PIEI.HHE. ML:1.2 0.0001027 1.02 AML other m 2023-04-16T16:54:49.77
IV.PIEI.HHN. ML:1.0 0.00006925 1.58 AML other m 2023-04-16T16:54:49.12
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