Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.1 on date 13-03-2023 and time 08:36:10 (Italy) in region 5 km NE Città di Castello (PG)

A magnitude ML 1.1 earthquake occured in region: 5 km NE Città di Castello (PG), on

  • 13-03-2023 07:36:10 (UTC)
  • 13-03-2023 08:36:10 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 43.4890, 12.2840 at 8 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 5 39913 39913
San Giustino PG 11 11297 51210
Monte Santa Maria Tiberina PG 11 1183 52393
Pietralunga PG 13 2111 54504
Apecchio PU 14 1882 56386
Citerna PG 14 3531 59917
Monterchi AR 14 1757 61674
Montone PG 14 1680 63354
Sansepolcro AR 15 15884 79238
Mercatello sul Metauro PU 18 1378 80616
Borgo Pace PU 19 606 81222
Anghiari AR 19 5638 86860

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km E of Arezzo (99543 inhabitants)
43 Km N of Perugia (166134 inhabitants)
68 Km SW of Rimini (147750 inhabitants)
68 Km NW of Foligno (57155 inhabitants)
69 Km SW of Pesaro (94582 inhabitants)
71 Km SW of Fano (60888 inhabitants)
72 Km S of Cesena (96758 inhabitants)
79 Km E of Siena (53903 inhabitants)
84 Km S of Forlì (117913 inhabitants)
88 Km E of Firenze (382808 inhabitants)
94 Km E of Scandicci (50609 inhabitants)
94 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 1.1 2023-03-13
07:36:10		 43.4887 12.2838 8 2023-03-13
07:49:02		 Sala Sismica INGV-Roma 115311571
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-03-13 07:36:10 ± 0.13
Latitude 43.4887 ± 0.0027
Longitude 12.2838 ± 0.0050
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 115311571

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 350
Semi-minor axis of confidence ellipse (meter) 70
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 76
Circular confidence region, given by single value of horizontal uncertainty (meter) 350.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 68
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 15
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) 0.03507
Epicentral distance of station farthest from the epicenter (degree) 0.28059
Number of stations at which the event was observed 8
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 115311571
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-03-13 07:49:02
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ATVA.EHZ. 2023-03-13T07:36:18.87 0.3 undecidable manual S 180 23.2545 108 -0.49 66
IV.CAFI.HHZ. 2023-03-13T07:36:17.11 0.3 undecidable manual P 235 31.1466 104 -0.16 70
IV.ATVO.HHZ. 2023-03-13T07:36:17.03 0.3 undecidable manual S 140 15.3735 116 0.22 71
IV.PARC.HHZ. 2023-03-13T07:36:17.66 0.3 undecidable manual S 348 18.0708 113 -0.01 74
IV.APEC.HHZ. 2023-03-13T07:36:16.20 0.3 undecidable manual S 55 13.3755 120 0 75
IV.ATPI.EHZ. 2023-03-13T07:36:15.23 0.3 undecidable manual S 114 10.3785 126 -0.1 74
IV.ATVA.EHZ. 2023-03-13T07:36:15.96 0.3 undecidable manual P 180 23.2545 108 0.2 70
IV.ATMC.EHZ. 2023-03-13T07:36:15.06 0.3 undecidable manual S 238 8.6802 131 0.21 72
IV.PARC.HHZ. 2023-03-13T07:36:14.72 0.3 undecidable manual P 348 18.0708 113 -0.07 73
IV.ATVO.HHZ. 2023-03-13T07:36:14.39 0.3 undecidable manual P 140 15.3735 116 0.1 73
IV.ATMC.EHZ. 2023-03-13T07:36:13.33 0.3 undecidable manual P 238 8.6802 131 0.17 73
IV.ATPI.EHZ. 2023-03-13T07:36:13.44 0.1 undecidable manual P 114 10.3785 126 0 100
IV.APEC.HHZ. 2023-03-13T07:36:13.91 0.3 undecidable manual P 55 13.3755 120 -0.03 74
IV.BADI.EHZ. 2023-03-13T07:36:13.64 0.3 undecidable manual S 306 3.8961 153 -0.18 73
IV.BADI.EHZ. 2023-03-13T07:36:12.63 0.1 undecidable manual P 306 3.8961 153 0.06 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATPI.EHE. ML:0.8 0.00009385 0.14 AML other m 2023-03-13T07:36:15.29
IV.ATPI.EHN. ML:0.7 0.00007555000000000001 0.12 AML other m 2023-03-13T07:36:15.36
IV.APEC.HHN. ML:1.4 0.00029749999999999997 0.28 AML other m 2023-03-13T07:36:16.37
IV.APEC.HHE. ML:1.1 0.00016 0.28 AML other m 2023-03-13T07:36:16.53
IV.ATVO.HHE. ML:1.2 0.00016399999999999997 0.3 AML other m 2023-03-13T07:36:17.55
IV.ATVO.HHN. ML:1.2 0.000175 0.28 AML other m 2023-03-13T07:36:17.50
IV.PARC.HHE. ML:1.0 0.00009534999999999999 1.76 AML other m 2023-03-13T07:36:18.95
IV.PARC.HHN. ML:1.0 0.00008579999999999998 1.08 AML other m 2023-03-13T07:36:18.76
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