Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 25-05-2011 and time 07:22:14 (Italy) in region 3 km N Leonforte (EN)

A magnitude ML 2.0 earthquake occured in region: 3 km N Leonforte (EN), on

  • 25-05-2011 05:22:14 (UTC)
  • 25-05-2011 07:22:14 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.6680, 14.3970 at 29 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
Leonforte EN 3 13439 13439
Nissoria EN 5 3000 16439
Assoro EN 5 5191 21630
Nicosia EN 9 13899 35529
Agira EN 11 8345 43874
Sperlinga EN 12 805 44679
Gagliano Castelferrato EN 13 3593 48272
Calascibetta EN 14 4528 52800
Enna EN 15 28019 80819
Cerami EN 19 2006 82825
Valguarnera Caropepe EN 19 7866 90691

Municipalities with at least 50000 inhabitants

An earthquake occurred to
35 Km NE of Caltanissetta (63360 inhabitants)
64 Km W of Catania (314555 inhabitants)
68 Km W of Acireale (52622 inhabitants)
68 Km N of Gela (75827 inhabitants)
81 Km N of Vittoria (63339 inhabitants)
82 Km NE of Agrigento (59770 inhabitants)
88 Km NW of Ragusa (73313 inhabitants)
90 Km SE of Bagheria (55387 inhabitants)
96 Km NW of Modica (54633 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 2011-05-25
05:22:14		 37.668 14.397 29 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 1220079
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2011-05-25 05:22:14 ± 0.21
Latitude 37.6680 ± 0.0090
Longitude 14.3970 ± 0.0114
Depth (km) 29 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 1220079

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1046
Semi-minor axis of confidence ellipse (meter) 322
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 245
Circular confidence region, given by single value of horizontal uncertainty (meter) 1414.2
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 82
Number of associated phases, regardless of their use for origin computation 38
Number of defining phases 29
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.59
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.91281
Number of stations at which the event was observed 26
Number of stations from which data was used for origin computation 17
Magnitude information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations
Type of magnitude ML
Reference to an origin 1220079
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 23:55:59
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.HAVL.HHN. 2011-05-25T05:22:44.96 0.6 undecidable manual Sg 141 101.3208 0.52 41
IV.MILZ.HHN. 2011-05-25T05:22:44.64 0.6 undecidable manual Sg 47 99.0231 0.804 35
IV.AGST.EHE. 2011-05-25T05:22:41.24 10.0 undecidable manual Pg 0 0 0
.MCSR.HHN. 2011-05-25T05:22:41.29 0.6 undecidable manual Sg 59 85.1481 1.05 32
IV.NOV.HHN. 2011-05-25T05:22:38.01 0.3 undecidable manual Sg 58 76.0683 0.119 69
.MUCR.HHZ. 2011-05-25T05:22:33.31 0.3 undecidable manual Sg 45 58.9965 -0.226 72
IV.HLNI.HHE. 2011-05-25T05:22:32.73 0.6 undecidable manual Sg 130 54.8007 0.227 48
IV.GIB.HHE. 2011-05-25T05:22:31.39 0.6 undecidable manual Sg 318 48.3183 0.468 45
IV.MPNC.HHN. 2011-05-25T05:22:31.67 0.3 undecidable manual Pg 57 99.0231 0.237 65
IV.HAVL.HHN. 2011-05-25T05:22:31.30 0.3 undecidable manual Pg 141 101.3208 -0.471 61
IV.MILZ.HHN. 2011-05-25T05:22:31.51 0.3 undecidable manual Pg 47 99.0231 0.087 67
IV.PLLN.SHE. 2011-05-25T05:22:29.96 0.6 undecidable manual Sg 328 42.3243 0.46 46
.MCSR.HHN. 2011-05-25T05:22:29.03 0.3 undecidable manual Pg 59 85.1481 -0.317 67
IV.MNO.SHE. 2011-05-25T05:22:28.89 0.6 undecidable manual Sg 42 39.1275 0.124 49
IV.NOV.HHN. 2011-05-25T05:22:27.56 0.3 undecidable manual Pg 58 76.0683 -0.43 66
IV.ALJA.HHN. 2011-05-25T05:22:26.20 0.6 undecidable manual Pg 279 57.1983 0.978 37
IV.RESU.HHE. 2011-05-25T05:22:26.25 0.6 undecidable manual Sg 266 29.9478 -0.512 45
IV.HVZN.HHE. 2011-05-25T05:22:25.68 0.3 undecidable manual Pg 153 61.0944 -0.112 71
.MUCR.HHZ. 2011-05-25T05:22:24.89 0.3 undecidable manual Pg 45 58.9965 -0.585 66
IV.HLNI.HHE. 2011-05-25T05:22:24.12 0.3 undecidable manual Pg 130 54.8007 -0.76 60
IV.RAFF.HHE. 2011-05-25T05:22:24.22 0.1 undecidable manual Pg 184 49.5171 0.088 100
IV.GALF.HHZ. 2011-05-25T05:22:23.77 0.6 undecidable manual Sg 72 15.5733 -0.451 48
IV.CAGR.HHN. 2011-05-25T05:22:23.75 0.6 undecidable manual Sg 119 10.3785 0.153 53
IV.GIB.HHE. 2011-05-25T05:22:23.70 0.3 undecidable manual Pg 318 48.3183 -0.268 72
IV.ECNV.HHN. 2011-05-25T05:22:22.04 0.3 undecidable manual Pg 106 28.8489 0.608 68
IV.MNO.SHE. 2011-05-25T05:22:22.21 0.3 undecidable manual Pg 42 39.1275 -0.511 70
IV.PLLN.SHE. 2011-05-25T05:22:22.07 0.3 undecidable manual Pg 328 42.3243 -1.076 55
IV.RESU.HHE. 2011-05-25T05:22:22.16 0.3 undecidable manual Pg 266 29.9478 0.595 69
IV.CAGR.HHN. 2011-05-25T05:22:20.69 0.3 undecidable manual Pg 119 10.3785 0.952 61
IV.GALF.HHZ. 2011-05-25T05:22:19.68 0.3 undecidable manual Pg 72 15.5733 -0.418 73
IV.SEI.SHZ. 2011-05-25T05:22:16.18 10.0 undecidable manual Pg 0 0 0
IV.ATPC.HHN. 2011-05-25T05:22:16.77 10.0 undecidable manual Pg 0 0 0
IV.PIEI.HHE. 2011-05-25T05:22:15.94 10.0 undecidable manual Pg 0 0 0
IV.ASQU.HHZ. 2011-05-25T05:22:01.82 10.0 undecidable manual Pg 0 0 0
IV.SFI.EHZ. 2011-05-25T05:22:00.61 10.0 undecidable manual Pg 0 0 0
IV.T0104.HHE. 2011-05-25T05:21:44.29 10.0 undecidable manual Pg 0 0 0
IV.MTRZ.HHZ. 2011-05-25T05:21:41.68 10.0 undecidable manual Pg 0 0 0
IV.VARE.HHN. 2011-05-25T05:21:35.27 10.0 undecidable manual Pg 0 0 0
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
Waveforms Seismic signals in miniseed + resp format Download