Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.2 on date 25-04-2014 and time 22:52:56 (Italy) in region 4 km SW Cetona (SI)

A magnitude ML 1.2 earthquake occured in region: 4 km SW Cetona (SI), on

  • 25-04-2014 20:52:56 (UTC)
  • 25-04-2014 22:52:56 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 42.9370, 11.8670 at 4 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
Cetona SI 4 2755 2755
Sarteano SI 6 4717 7472
San Casciano dei Bagni SI 7 1632 9104
Radicofani SI 9 1097 10201
Chiusi SI 11 8704 18905
Città della Pieve PG 12 7712 26617
Chianciano Terme SI 14 7105 33722
Fabro TR 15 2876 36598
Monteleone d'Orvieto TR 15 1467 38065
Allerona TR 16 1794 39859
Abbadia San Salvatore SI 17 6444 46303
Piancastagnaio SI 17 4230 50533
Piegaro PG 18 3669 54202
Montegabbione TR 19 1216 55418
Montepulciano SI 19 14097 69515
Paciano PG 19 975 70490
Ficulle TR 20 1669 72159

Municipalities with at least 50000 inhabitants

An earthquake occurred to
47 Km W of Perugia (166134 inhabitants)
59 Km S of Arezzo (99543 inhabitants)
61 Km SE of Siena (53903 inhabitants)
61 Km NW of Viterbo (67173 inhabitants)
64 Km E of Grosseto (82087 inhabitants)
68 Km W of Foligno (57155 inhabitants)
76 Km NW of Terni (111501 inhabitants)
94 Km N of Civitavecchia (52991 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 1.2 2014-04-25
20:52:56		 42.937 11.8667 4 2015-09-21
09:36:10		 Bollettino Sismico Italiano INGV 16534591
Reviewed
Rev100 		Md 1.5
ML 1.3 		2014-04-25
20:52:56		 42.9098 11.8738 8 2014-10-21
12:08:56		 Sala Sismica INGV-Roma 6297351
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2014-04-25 20:52:56 ± 0.08
Latitude 42.9370 ± 0.0045
Longitude 11.8667 ± 0.0049
Depth (km) 4 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 16534591

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 443
Semi-minor axis of confidence ellipse (meter) 300
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 290
Circular confidence region, given by single value of horizontal uncertainty (meter) 440.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 55
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.25
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.74014
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 10
Magnitudes information

ML:1.3

Field Value
Value 1.3
Uncertainty 0.3
Num. used stations 5
Type of magnitude ML
Reference to an origin 6297351
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2014-04-25 21:02:40

ML:1.2

Field Value
Value 1.2
Uncertainty 0.3
Num. used stations 4
Type of magnitude ML
Reference to an origin 16534591
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2015-01-15 10:03:33

Md:1.5

Field Value
Value 1.5
Uncertainty 0.3
Num. used stations 2
Type of magnitude Md
Reference to an origin 6297351
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2014-04-25 21:02:40
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CAVE.HHZ. 2014-04-25T20:53:31.21 3.0 positive manual Pn 0.25 0
IV.LAV9.HNZ. 2014-04-25T20:53:20.69 3.0 undecidable manual P -0.03 0
IV.FROS.HHZ. 2014-04-25T20:53:18.18 0.3 undecidable manual S 298 64.9905 50 0.53 62
IV.MURB.HHZ. 2014-04-25T20:53:17.62 0.3 undecidable manual S 56 64.3911 50 0.14 68
IV.MOMA.HHZ. 2014-04-25T20:53:16.08 0.3 undecidable manual S 105 58.9965 50 0.04 70
IV.CAFI.HHZ. 2014-04-25T20:53:11.83 0.3 undecidable manual S 10 44.2224 95 0.14 71
IV.OSSC.HHE. 2014-04-25T20:53:11.43 0.3 undecidable manual P 323 82.1511 50 0.17 65
IV.LATE.HHE. 2014-04-25T20:53:09.34 0.3 undecidable manual S 188 36.2415 96 0.42 67
IV.FROS.HHZ. 2014-04-25T20:53:08.51 0.3 undecidable manual P 298 64.9905 50 -0.11 68
IV.MURB.HHZ. 2014-04-25T20:53:08.27 0.3 undecidable manual P 56 64.3911 50 -0.25 66
IV.MOMA.HHZ. 2014-04-25T20:53:07.08 0.3 undecidable manual P 105 58.9965 50 -0.61 61
IV.CAFI.HHZ. 2014-04-25T20:53:05.04 0.3 undecidable manual P 10 44.2224 95 -0.14 71
IV.MCIV.HHZ. 2014-04-25T20:53:04.46 0.3 undecidable manual S 221 23.3544 100 -0.05 74
IV.LATE.HHE. 2014-04-25T20:53:03.08 0.3 undecidable manual P 188 36.2415 96 -0.5 66
IV.MGAB.HHZ. 2014-04-25T20:53:03.65 0.3 undecidable manual S 98 20.1687 101 0.25 72
IV.ARCI.HHZ. 2014-04-25T20:53:02.75 0.3 undecidable manual P 254 33.1446 97 -0.22 71
IV.SACS.HHZ. 2014-04-25T20:53:00.40 0.3 undecidable manual S 160 10.3785 111 0.26 73
IV.MGAB.HHZ. 2014-04-25T20:53:00.34 0.1 undecidable manual P 98 20.1687 101 -0.04 100
IV.MCIV.HHZ. 2014-04-25T20:53:00.89 0.3 undecidable manual P 221 23.3544 100 -0.14 73
IV.SACS.HHZ. 2014-04-25T20:52:58.61 0.3 undecidable manual P 160 10.3785 111 0.11 75
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CAFI.HHE. ML:0.8 0.000020059999999999998 0.16 AML other m 2014-04-25T20:53:26.10
IV.CAFI.HHN. ML:1.4 0.0000694 1.84 AML other m 2014-04-25T20:53:26.07
IV.MCIV.HHN. ML:0.8 0.000038 0.26 AML other m 2014-04-25T20:53:08.85
IV.MCIV.HHE. ML:0.8 0.000038900000000000004 0.8 AML other m 2014-04-25T20:53:11.96
IV.MGAB.HHE. ML:1.2 0.00014649999999999998 0.42 AML other m 2014-04-25T20:53:05.27
IV.MGAB.HHN. ML:1.1 0.00010385 0.18 AML other m 2014-04-25T20:53:06.71
IV.SACS.HHE. ML:1.6 0.0007435 2.2 AML other m 2014-04-25T20:53:01.41
IV.SACS.HNE. ML:1.6 0.0007275000000000001 2.2 AML other m 2014-04-25T20:53:01.41
IV.SACS.HNN. ML:1.4 0.0004195 1.2 AML other m 2014-04-25T20:53:01.19
IV.SACS.HHN. ML:1.4 0.0003985 2.72 AML other m 2014-04-25T20:53:02.14
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