Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 0.2 on date 24-04-2013 and time 22:58:33 (UTC) in region 5 km E Città di Castello (PG)

A magnitude ML 0.2 earthquake occured in region: 5 km E Città di Castello (PG), on

  • 24-04-2013 22:58:33 (UTC)
  • 25-04-2013 00:58:33 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 43.4600, 12.3050 at 7 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 11 1680 41593
Pietralunga PG 11 2111 43704
Monte Santa Maria Tiberina PG 12 1183 44887
San Giustino PG 14 11297 56184
Apecchio PU 14 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)
40 Km N of Perugia (166134 inhabitants)
65 Km NW of Foligno (57155 inhabitants)
70 Km SW of Pesaro (94582 inhabitants)
70 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)
96 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 		Md 1.2
ML 0.2 		2013-04-24
22:58:33		 43.4603 12.3048 7 2015-01-20
11:25:34		 Bollettino Sismico Italiano INGV 4541221
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2013-04-24 22:58:33 ± 0.11
Latitude 43.4603 ± 0.0027
Longitude 12.3048 ± 0.0025
Depth (km) 7 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 4541221

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 270
Semi-minor axis of confidence ellipse (meter) 108
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 14
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) 108
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.11
Epicentral distance of station closest to the epicenter (degree) 0.05216
Epicentral distance of station farthest from the epicenter (degree) 0.18256
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitudes information

ML:0.2

Field Value
Value 0.2
Uncertainty 0.0
Num. used stations 1
Type of magnitude ML
Reference to an origin 4541221
Agency INGV
Autore Manually reviewed by Franco Mele
Time of creation (UTC) 2015-01-15 13:25:16

Md:1.2

Field Value
Value 1.2
Uncertainty 0.5
Num. used stations 2
Type of magnitude Md
Reference to an origin 4541221
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-09-23 09:44:40
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PIEI.HHZ. 2013-04-24T22:58:41.30 0.3 undecidable manual S 66 20.2686 108 0.19 71
IV.ATMI.HHZ. 2013-04-24T22:58:39.25 0.6 undecidable manual S 192 14.2746 115 0.09 49
IV.ATVO.HHZ. 2013-04-24T22:58:38.55 0.3 undecidable manual S 137 11.9769 119 0.13 73
IV.ATPI.EHZ. 2013-04-24T22:58:37.12 0.3 undecidable manual S 98 7.881 130 -0.14 73
IV.PIEI.HHZ. 2013-04-24T22:58:37.86 0.1 undecidable manual P 66 20.2686 108 -0.11 96
IV.BADI.EHZ. 2013-04-24T22:58:37.21 0.3 undecidable manual S 318 7.2927 132 0.1 74
IV.ATVO.HHZ. 2013-04-24T22:58:36.48 0.1 undecidable manual P 137 11.9769 119 0.05 99
IV.CDCA.EHZ. 2013-04-24T22:58:36.67 0.3 undecidable manual S 268 5.7942 139 -0.05 75
IV.ATMI.HHZ. 2013-04-24T22:58:36.79 0.6 undecidable manual P 192 14.2746 115 -0.06 49
IV.BADI.EHZ. 2013-04-24T22:58:35.71 0.1 undecidable manual P 318 7.2927 132 0.04 100
IV.ATPI.EHZ. 2013-04-24T22:58:35.66 0.1 undecidable manual P 98 7.881 130 -0.1 99
IV.CDCA.EHZ. 2013-04-24T22:58:35.38 0.3 undecidable manual P 268 5.7942 139 -0.06 75
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ATVO.HHN. ML:0.2 0.00001975 1.58 AML other m 2013-04-24T22:58:38.62
IV.ATVO.HHE. ML:0.2 0.0000202 1.56 AML other m 2013-04-24T22:58:39.74
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