Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.5 on date 27-12-2009 and time 11:22:23 (UTC) in region 9 km E Bronte (CT)

A magnitude ML 2.5 earthquake occured in region: 9 km E Bronte (CT), on

  • 27-12-2009 11:22:23 (UTC)
  • 27-12-2009 12:22:23 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.7670, 14.9290 at 30 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.

Hai sentito il terremoto? Clicca qui

Did you feel it? Fill in the questionnaire.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Bronte CT 9 19172 19172
Maletto CT 9 3920 23092
Randazzo CT 13 10900 33992
Adrano CT 14 36122 70114
Biancavilla CT 15 24007 94121
Maniace CT 15 3765 97886
Ragalna CT 15 3924 101810
Santa Domenica Vittoria ME 17 980 102790
Santa Maria di Licodia CT 17 7641 110431
Milo CT 17 1087 111518
Zafferana Etnea CT 17 9517 121035
Moio Alcantara ME 18 717 121752
Nicolosi CT 19 7463 129215
Sant'Alfio CT 19 1582 130797
Roccella Valdemone ME 20 666 131463
Belpasso CT 20 28108 159571

Municipalities with at least 50000 inhabitants

An earthquake occurred to
27 Km NW of Acireale (52622 inhabitants)
32 Km NW of Catania (314555 inhabitants)
73 Km SW of Messina (238439 inhabitants)
73 Km SW of Reggio di Calabria (183035 inhabitants)
82 Km E of Caltanissetta (63360 inhabitants)
85 Km NW of Siracusa (122291 inhabitants)
95 Km N of Ragusa (73313 inhabitants)
97 Km NE of Vittoria (63339 inhabitants)
98 Km NE of Gela (75827 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 2.5 2009-12-27
11:22:23		 37.767 14.929 30 2014-10-21
12:27:13		 Bollettino Sismico Italiano INGV 1002509
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2009-12-27 11:22:23 ± 0.19
Latitude 37.7670 ± 0.0072
Longitude 14.9290 ± 0.0114
Depth (km) 30 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-SISPICK
Event type earthquake
Origin ID 1002509

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 985
Semi-minor axis of confidence ellipse (meter) 546
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 77
Circular confidence region, given by single value of horizontal uncertainty (meter) 1280.6
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 105
Number of associated phases, regardless of their use for origin computation 25
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.44
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.87054
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 11
Magnitude information

ML:2.5

Field Value
Value 2.5
Uncertainty 0.3
Num. used stations
Type of magnitude ML
Reference to an origin 1002509
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2013-01-05 19:12:53
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FRES.HHN. 2009-12-27T11:23:21.73 10.0 undecidable manual Pg 0 0 0
IV.SBPO.HHN. 2009-12-27T11:23:13.50 10.0 undecidable manual Pg 0 0 0
IV.HAVL.HHN. 2009-12-27T11:22:51.14 0.3 undecidable manual Sg 169 91.1421 0.254 65
IV.MTGR.SHZ. 2009-12-27T11:22:46.25 10.0 undecidable manual Pg 0 0 0
IV.SSY.HHN. 2009-12-27T11:22:45.52 0.3 undecidable manual Sg 169 68.7756 0.39 66
IV.HVZN.HHZ. 2009-12-27T11:22:45.01 0.6 undecidable manual Sg 196 67.9764 0.088 47
IV.HCRL.HHN. 2009-12-27T11:22:41.61 0.3 undecidable manual Sg 170 54.4011 0.062 73
IV.MPAZ.HHN. 2009-12-27T11:22:40.90 0.3 undecidable manual Pg 77 96.6255 0.765 55
IV.CSLB.SHZ. 2009-12-27T11:22:39.08 10.0 undecidable manual Pg 0 0 0
IV.HAVL.HHN. 2009-12-27T11:22:38.92 0.3 undecidable manual Pg 169 91.1421 -0.395 63
IV.RAFF.HHN. 2009-12-27T11:22:37.46 0.3 undecidable manual Pg 220 78.366 0.057 70
IV.GALF.HHE. 2009-12-27T11:22:36.72 0.3 undecidable manual Sg 259 32.4453 0.266 73
IV.MMME.HHZ. 2009-12-27T11:22:36.87 0.3 undecidable manual Sg 57 34.0437 0.081 75
IV.STR3.BHE. 2009-12-27T11:22:36.31 10.0 undecidable manual Pg 0 0 0
IV.SSY.HHN. 2009-12-27T11:22:35.85 0.3 undecidable manual Pg 169 68.7756 -0.142 70
IV.HVZN.HHZ. 2009-12-27T11:22:35.66 0.3 undecidable manual Pg 196 67.9764 -0.214 69
IV.ECNV.HHZ. 2009-12-27T11:22:35.21 0.6 undecidable manual Sg 225 26.8509 -0.123 50
IV.IVPL.HHZ. 2009-12-27T11:22:35.80 0.3 undecidable manual Pg 4 67.7766 -0.04 71
IV.HCRL.HHN. 2009-12-27T11:22:33.57 0.1 undecidable manual Pg 170 54.4011 -0.354 91
IV.ESLN.HHE. 2009-12-27T11:22:32.77 0.6 undecidable manual Sg 154 9.0798 0.044 53
IV.ECNV.HHZ. 2009-12-27T11:22:31.34 0.3 undecidable manual Pg 225 26.8509 1.002 57
IV.MMME.HHZ. 2009-12-27T11:22:31.07 0.1 undecidable manual Pg 57 34.0437 -0.108 100
IV.GALF.HHE. 2009-12-27T11:22:30.66 0.1 undecidable manual Pg 259 32.4453 -0.323 95
IV.ESLN.HHE. 2009-12-27T11:22:28.11 0.3 undecidable manual Pg 154 9.0798 -0.722 66
IV.MOCO.HHN. 2009-12-27T11:22:17.26 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