Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 20-04-2013 and time 21:18:41 (UTC) in region 5 km E Città di Castello (PG)

A magnitude ML 2.0 earthquake occured in region: 5 km E Città di Castello (PG), on

  • 20-04-2013 21:18:41 (UTC)
  • 20-04-2013 23:18:41 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.4570, 12.3060 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
Montone PG 10 1680 41593
Pietralunga PG 11 2111 43704
Monte Santa Maria Tiberina PG 12 1183 44887
San Giustino PG 15 11297 56184
Apecchio PU 15 1882 58066
Citerna PG 16 3531 61597
Monterchi AR 16 1757 63354
Umbertide PG 17 16681 80035
Sansepolcro AR 18 15884 95919

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km E of Arezzo (99543 inhabitants)
39 Km N of Perugia (166134 inhabitants)
64 Km NW of Foligno (57155 inhabitants)
70 Km SW of Pesaro (94582 inhabitants)
71 Km SW of Rimini (147750 inhabitants)
72 Km SW of Fano (60888 inhabitants)
76 Km S of Cesena (96758 inhabitants)
80 Km E of Siena (53903 inhabitants)
88 Km S of Forlì (117913 inhabitants)
91 Km E of Firenze (382808 inhabitants)
97 Km E of Scandicci (50609 inhabitants)
98 Km SE of Faenza (58541 inhabitants)
100 Km W of Ancona (100861 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 2.0 2013-04-20
21:18:41		 43.4567 12.3062 9 2015-01-20
11:25:00		 Bollettino Sismico Italiano INGV 3307701
Reviewed
Rev100 		ML 2.0 2013-04-20
21:18:41		 43.4593 12.3085 9 2014-10-21
12:08:56		 Sala Sismica INGV-Roma 3245011
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2013-04-20 21:18:41 ± 0.05
Latitude 43.4567 ± 0.0027
Longitude 12.3062 ± 0.0037
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 3307701

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 341
Semi-minor axis of confidence ellipse (meter) 244
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 242
Circular confidence region, given by single value of horizontal uncertainty (meter) 340.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 40
Number of associated phases, regardless of their use for origin computation 39
Number of defining phases 39
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0.05306
Epicentral distance of station farthest from the epicenter (degree) 0.70687
Number of stations at which the event was observed 29
Number of stations from which data was used for origin computation 29
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations 23
Type of magnitude ML
Reference to an origin 3307701
Agency INGV
Autore Manually reviewed by Franco Mele
Time of creation (UTC) 2015-01-15 12:55:16

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations 23
Type of magnitude ML
Reference to an origin 3245011
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2013-04-20 23:20:28
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SNTG.HHZ. 2013-04-20T21:19:00.21 0.3 undecidable manual S 113 55.7997 50 0.64 59
IV.ASSB.HHZ. 2013-04-20T21:18:59.21 0.1 undecidable manual S 148 54.0015 50 0.12 90
IV.FDMO.HHZ. 2013-04-20T21:18:55.39 0.3 undecidable manual P 126 78.4659 50 -0.11 65
IV.SACS.HHZ. 2013-04-20T21:18:55.07 0.3 undecidable manual P 206 74.6697 50 0.16 65
IV.CESI.HHZ. 2013-04-20T21:18:54.34 0.3 undecidable manual P 136 69.6747 50 0.2 65
IV.SFI.EHZ. 2013-04-20T21:18:53.03 0.3 undecidable manual P 324 61.8936 50 0.09 67
IV.EL6.EHZ. 2013-04-20T21:18:53.40 0.3 undecidable manual P 102 65.6898 50 -0.13 66
IV.MGAB.HHZ. 2013-04-20T21:18:53.07 0.1 undecidable manual P 195 62.3931 50 0.05 90
IV.SNTG.HHZ. 2013-04-20T21:18:52.21 0.3 undecidable manual P 113 55.7997 50 0.2 66
IV.ASQU.HHZ. 2013-04-20T21:18:52.07 0.3 undecidable manual P 312 56.0994 50 0.02 69
IV.CAFI.HHZ. 2013-04-20T21:18:52.32 0.6 undecidable manual S 243 30.8469 106 -0.49 44
IV.ASSB.HHZ. 2013-04-20T21:18:51.51 0.3 undecidable manual P 148 54.0015 50 -0.23 66
IV.ARVD.HHZ. 2013-04-20T21:18:51.15 0.1 positive manual P 85 51.3153 50 -0.17 90
IV.PARC.HHZ. 2013-04-20T21:18:50.52 0.1 undecidable manual S 346 21.9669 112 0.63 84
IV.ATFO.HHZ. 2013-04-20T21:18:50.59 0.1 undecidable manual S 115 23.5542 110 0.17 94
IV.FSSB.HHZ. 2013-04-20T21:18:50.36 0.3 positive manual P 55 46.0206 50 -0.14 68
IV.MPAG.EHZ. 2013-04-20T21:18:49.47 0.3 positive manual P 62 41.1255 50 -0.28 67
IV.CPGN.EHZ. 2013-04-20T21:18:49.79 0.1 undecidable manual P 2 38.2284 50 0.49 86
IV.ATCC.EHZ. 2013-04-20T21:18:49.54 0.1 undecidable manual P 138 40.4262 50 -0.09 93
IV.PE3.EHZ. 2013-04-20T21:18:48.05 0.1 undecidable manual P 30 30.6471 106 -0.02 96
IV.SSFR.HHZ. 2013-04-20T21:18:48.94 0.1 undecidable manual P 93 38.4282 50 -0.39 88
IV.FRON.EHZ. 2013-04-20T21:18:48.27 0.1 undecidable manual P 79 34.4433 50 -0.44 87
IV.MURB.HHZ. 2013-04-20T21:18:47.36 0.1 undecidable manual P 141 27.75 107 -0.16 94
IV.ATMI.HHZ. 2013-04-20T21:18:47.68 0.1 undecidable manual S 193 13.9749 122 0.28 94
IV.ATTE.HHZ. 2013-04-20T21:18:47.63 0.1 undecidable manual P 172 28.9488 107 -0.12 94
IV.NARO.HHZ. 2013-04-20T21:18:47.23 0.1 undecidable manual P 52 27.9498 107 -0.32 91
IV.CAFI.HHZ. 2013-04-20T21:18:47.85 0.1 undecidable manual P 243 30.8469 106 -0.26 91
IV.ATVO.HHZ. 2013-04-20T21:18:46.95 0.1 undecidable manual S 136 11.5773 127 0.23 95
IV.ATFO.HHZ. 2013-04-20T21:18:46.79 0.1 undecidable manual P 115 23.5542 110 0.06 96
IV.PARC.HHZ. 2013-04-20T21:18:46.47 0.1 undecidable manual P 346 21.9669 112 0.04 97
IV.PIEI.HHZ. 2013-04-20T21:18:46.22 0.3 undecidable manual P 64 20.3685 113 0.09 72
IV.CDCA.EHZ. 2013-04-20T21:18:45.08 0.3 undecidable manual S 272 5.8941 146 -0.26 72
IV.ATPI.EHZ. 2013-04-20T21:18:45.49 0.1 undecidable manual S 95 7.7811 138 -0.25 95
IV.ATMI.HHZ. 2013-04-20T21:18:45.23 0.1 undecidable manual P 193 13.9749 122 0.24 94
IV.BADI.EHZ. 2013-04-20T21:18:45.64 0.1 undecidable manual S 320 7.6812 139 -0.09 98
IV.BADI.EHZ. 2013-04-20T21:18:44.08 0.1 undecidable manual P 320 7.6812 139 0.06 99
IV.ATVO.HHZ. 2013-04-20T21:18:44.73 0.1 undecidable manual P 136 11.5773 127 0.13 97
IV.ATPI.EHZ. 2013-04-20T21:18:44.05 0.1 undecidable manual P 95 7.7811 138 0.02 100
IV.CDCA.EHZ. 2013-04-20T21:18:43.67 0.6 undecidable manual P 272 5.8941 146 -0.12 49
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ARVD.HHN. ML:1.7 0.00013365 0.32 AML other m 2013-04-20T21:18:58.94
IV.ARVD.HHE. ML:1.7 0.00011460000000000001 0.22 AML other m 2013-04-20T21:18:59.66
IV.ASSB.HHN. ML:1.6 0.00010059999999999999 0.24 AML other m 2013-04-20T21:19:00.76
IV.ASSB.HHE. ML:1.6 0.0000863 1.36 AML other m 2013-04-20T21:19:01.44
IV.ATCC.EHN. ML:1.9 0.000263 1.1 AML other m 2013-04-20T21:18:56.82
IV.ATCC.EHE. ML:2.0 0.00033699999999999995 0.62 AML other m 2013-04-20T21:18:57.32
IV.ATFO.HHE. ML:2.1 0.0007934999999999999 0.22 AML other m 2013-04-20T21:18:50.86
IV.ATFO.HHN. ML:2.3 0.00124 0.28 AML other m 2013-04-20T21:18:51.16
IV.ATMI.HHE. ML:2.5 0.0030700000000000002 0.44 AML other m 2013-04-20T21:18:48.05
IV.ATMI.HHN. ML:2.4 0.0025599999999999998 0.46 AML other m 2013-04-20T21:18:48.14
IV.ATPI.EHE. ML:2.2 0.0022199999999999998 0.44 AML other m 2013-04-20T21:18:45.62
IV.ATPI.EHN. ML:2.2 0.0023 0.82 AML other m 2013-04-20T21:18:45.59
IV.ATTE.HHN. ML:2.0 0.0005204999999999999 0.66 AML other m 2013-04-20T21:18:51.83
IV.ATTE.HHE. ML:1.9 0.0004015 0.76 AML other m 2013-04-20T21:18:52.63
IV.ATVO.HHN. ML:2.1 0.0015099999999999998 0.7 AML other m 2013-04-20T21:18:46.97
IV.ATVO.HHE. ML:2.1 0.0015 0.16 AML other m 2013-04-20T21:18:48.25
IV.BADI.EHE. ML:2.3 0.00317 0.18 AML other m 2013-04-20T21:18:45.75
IV.BADI.EHN. ML:2.3 0.002895 0.18 AML other m 2013-04-20T21:18:46.16
IV.CAFI.HHN. ML:1.8 0.00026700000000000004 0.28 AML other m 2013-04-20T21:18:52.87
IV.CAFI.HHE. ML:1.6 0.0002085 0.78 AML other m 2013-04-20T21:18:54.23
IV.CDCA.HNN. ML:2.8 0.01175 1.18 AML other m 2013-04-20T21:18:47.19
IV.CDCA.EHN. ML:2.0 0.0020215 0.58 AML other m 2013-04-20T21:18:48.02
IV.CDCA.EHE. ML:2.2 0.002615 1.08 AML other m 2013-04-20T21:18:47.32
IV.CDCA.HNE. ML:2.7 0.008505 0.8 AML other m 2013-04-20T21:18:48.90
IV.CESI.HHN. ML:1.2 0.00002605 0.56 AML other m 2013-04-20T21:19:05.58
IV.CESI.HHE. ML:0.9 0.000014 1.08 AML other m 2013-04-20T21:19:07.17
IV.FRON.EHE. ML:1.7 0.0002 0.54 AML other m 2013-04-20T21:18:53.97
IV.FRON.EHN. ML:1.9 0.0003265 1.02 AML other m 2013-04-20T21:18:53.78
IV.FSSB.HHE. ML:2.0 0.000261 0.76 AML other m 2013-04-20T21:18:58.30
IV.FSSB.HHN. ML:2.0 0.0003135 1.42 AML other m 2013-04-20T21:18:58.92
IV.MGAB.HHE. ML:2.3 0.00041000000000000005 0.48 AML other m 2013-04-20T21:19:03.54
IV.MGAB.HHN. ML:2.2 0.000319 0.52 AML other m 2013-04-20T21:19:05.31
IV.MPAG.EHN. ML:1.8 0.00021450000000000004 0.3 AML other m 2013-04-20T21:18:55.98
IV.MPAG.EHE. ML:1.6 0.0001485 0.8 AML other m 2013-04-20T21:18:56.85
IV.MURB.HHE. ML:2.3 0.0011749999999999998 0.18 AML other m 2013-04-20T21:18:53.04
IV.MURB.HHN. ML:2.2 0.0008045 1.24 AML other m 2013-04-20T21:18:52.65
IV.NARO.HHN. ML:1.5 0.000169 1.22 AML other m 2013-04-20T21:18:54.07
IV.NARO.HHE. ML:1.6 0.00023449999999999998 0.26 AML other m 2013-04-20T21:18:52.83
IV.PARC.HHE. ML:2.0 0.0006770000000000001 0.3 AML other m 2013-04-20T21:18:52.21
IV.PARC.HHN. ML:2.1 0.0008334999999999999 0.36 AML other m 2013-04-20T21:18:52.58
IV.PE3.EHE. ML:2.1 0.0006585 1.26 AML other m 2013-04-20T21:18:59.84
IV.PE3.EHN. ML:2.2 0.0007015 0.4 AML other m 2013-04-20T21:19:01.23
IV.PIEI.HHN. ML:2.0 0.000719 0.2 AML other m 2013-04-20T21:18:50.20
IV.PIEI.HHE. ML:1.9 0.0005915 0.34 AML other m 2013-04-20T21:18:50.23
IV.SACS.HHE. ML:1.8 0.00009884999999999999 0.22 AML other m 2013-04-20T21:19:06.58
IV.SACS.HHN. ML:1.9 0.00011099999999999999 1.1 AML other m 2013-04-20T21:19:06.52
IV.SSFR.HHE. ML:2.5 0.00124 0.2 AML other m 2013-04-20T21:18:55.61
IV.SSFR.HNE. ML:2.4 0.001037 0.2 AML other m 2013-04-20T21:18:55.61
IV.SSFR.HHN. ML:2.5 0.0012050000000000001 1.1 AML other m 2013-04-20T21:18:54.96
IV.SSFR.HNN. ML:2.6 0.0012850000000000001 1.08 AML other m 2013-04-20T21:18:55.50
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
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Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download
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