Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.5 on date 26-08-2017 and time 20:39:08 (UTC) in region 3 km N Biancavilla (CT)

A magnitude ML 2.5 earthquake occured in region: 3 km N Biancavilla (CT), on

  • 26-08-2017 20:39:08 (UTC)
  • 26-08-2017 22:39:08 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.6690, 14.8810 at 24 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
Biancavilla CT 3 24007 24007
Adrano CT 4 36122 60129
Santa Maria di Licodia CT 6 7641 67770
Ragalna CT 7 3924 71694
Paternò CT 10 48228 119922
Belpasso CT 12 28108 148030
Centuripe EN 13 5470 153500
Bronte CT 14 19172 172672
Nicolosi CT 14 7463 180135
Camporotondo Etneo CT 16 5023 185158
San Pietro Clarenza CT 17 7743 192901
Pedara CT 17 14102 207003
Maletto CT 18 3920 210923
Trecastagni CT 18 10910 221833
Mascalucia CT 19 31958 253791
Motta Sant'Anastasia CT 19 12116 265907
Misterbianco CT 20 49410 315317
Tremestieri Etneo CT 20 20589 335906
Zafferana Etnea CT 20 9517 345423
Gravina di Catania CT 20 25838 371261

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km NW of Catania (314555 inhabitants)
26 Km W of Acireale (52622 inhabitants)
75 Km E of Caltanissetta (63360 inhabitants)
77 Km NW of Siracusa (122291 inhabitants)
83 Km SW of Reggio di Calabria (183035 inhabitants)
83 Km SW of Messina (238439 inhabitants)
84 Km N of Ragusa (73313 inhabitants)
86 Km NE of Vittoria (63339 inhabitants)
87 Km NE of Gela (75827 inhabitants)
91 Km N 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 2.5 2017-08-26
20:39:08		 37.6688 14.881 24 2018-07-06
15:40:36		 Bollettino Sismico Italiano INGV 53563851
Reviewed
Rev100 		ML 2.4 2017-08-26
20:39:08		 37.6658 14.8742 24 2017-08-26
20:46:54		 Sala Sismica INGV-Roma 49395531
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2017-08-26 20:39:08 ± 0.09
Latitude 37.6688 ± 0.0036
Longitude 14.8810 ± 0.0080
Depth (km) 24 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 53563851

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 643
Semi-minor axis of confidence ellipse (meter) 225
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 269
Circular confidence region, given by single value of horizontal uncertainty (meter) 640.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 57
Number of associated phases, regardless of their use for origin computation 37
Number of defining phases 37
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.28
Epicentral distance of station closest to the epicenter (degree) 0.05036
Epicentral distance of station farthest from the epicenter (degree) 2.14938
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 23
Magnitudes information

ML:2.5

Field Value
Value 2.5
Uncertainty 0.3
Num. used stations 44
Type of magnitude ML
Reference to an origin 53563851
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2018-02-05 11:44:48

ML:2.4

Field Value
Value 2.4
Uncertainty 0.3
Num. used stations 42
Type of magnitude ML
Reference to an origin 49395531
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2017-08-26 20:46:54
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CELI.HHZ. 2017-08-26T20:39:43.52 0.6 undecidable manual P 36 238.5834 54 -0.34 22
IV.CAR1.HHZ. 2017-08-26T20:39:40.15 0.3 undecidable manual P 33 210.3339 54 -0.19 41
IV.SSY.HHZ. 2017-08-26T20:39:28.01 0.3 undecidable manual S 163 59.1963 105 0.56 62
IV.MEU.SHZ. 2017-08-26T20:39:28.76 1.0 undecidable manual S 184 61.9935 105 0.58 20
IV.HPAC.HHZ. 2017-08-26T20:39:26.72 0.3 undecidable manual P 173 107.4147 98 -0.11 63
IV.AGST.EHZ. 2017-08-26T20:39:26.76 0.6 undecidable manual S 146 55.0005 107 0.39 44
IV.MSFR.HHZ. 2017-08-26T20:39:25.27 0.6 undecidable manual S 328 47.8188 110 0.73 40
IV.HAGA.HHZ. 2017-08-26T20:39:25.25 0.6 undecidable manual S 150 48.9177 109 0.42 44
IV.AIO.HHZ. 2017-08-26T20:39:24.37 0.6 undecidable manual S 42 45.5211 111 0.38 45
IV.MSRU.HHZ. 2017-08-26T20:39:23.52 0.3 undecidable manual P 40 85.8474 100 -0.02 67
IV.MUCR.HHZ. 2017-08-26T20:39:23.20 0.6 undecidable manual S 359 41.5251 113 0.22 47
IV.RESU.HHZ. 2017-08-26T20:39:22.72 0.6 undecidable manual P 268 72.4719 102 1.21 30
IV.IVPL.HHZ. 2017-08-26T20:39:22.88 0.3 undecidable manual P 6 78.9654 101 0.38 63
IV.MNO.SHZ. 2017-08-26T20:39:21.14 0.6 undecidable manual S 331 33.3444 119 0.12 48
IV.HLNI.HHZ. 2017-08-26T20:39:21.66 0.6 undecidable manual S 181 35.5422 117 0.12 48
IV.MILZ.HHZ. 2017-08-26T20:39:21.63 0.3 undecidable manual P 25 73.4709 102 -0.05 68
IV.EPOZ.HHZ. 2017-08-26T20:39:20.08 0.3 undecidable manual S 89 26.9508 126 0.49 67
IV.RAFF.HHZ. 2017-08-26T20:39:20.83 0.1 negative manual P 223 67.377 103 0.08 92
IV.SSY.HHZ. 2017-08-26T20:39:19.44 0.1 positive manual P 163 59.1963 105 -0.09 93
IV.MEU.SHZ. 2017-08-26T20:39:19.80 0.1 negative manual P 184 61.9935 105 -0.16 91
IV.AGST.EHZ. 2017-08-26T20:39:18.65 0.1 positive manual P 146 55.0005 107 -0.26 90
IV.EPZF.HHZ. 2017-08-26T20:39:18.11 0.6 undecidable manual S 353 17.3715 140 0.43 46
IV.MSFR.HHZ. 2017-08-26T20:39:17.40 0.3 positive manual P 328 47.8188 110 -0.46 66
IV.AIO.HHZ. 2017-08-26T20:39:17.54 0.1 negative manual P 42 45.5211 111 0 97
IV.EMSG.HHZ. 2017-08-26T20:39:17.68 0.6 undecidable manual S 20 17.871 139 -0.1 50
IV.HAGA.HHZ. 2017-08-26T20:39:17.80 0.1 positive manual P 150 48.9177 109 -0.23 92
IV.ESML.HHZ. 2017-08-26T20:39:16.20 0.6 undecidable manual S 181 5.5944 165 -0.01 51
IV.MUCR.HHZ. 2017-08-26T20:39:16.63 0.3 positive manual P 359 41.5251 113 -0.32 68
IV.ESLN.HHZ. 2017-08-26T20:39:16.17 0.6 undecidable manual S 72 8.6802 158 -0.29 49
IV.EPOZ.HHZ. 2017-08-26T20:39:15.30 0.1 positive manual P 89 26.9508 126 0.3 94
IV.GALF.HHZ. 2017-08-26T20:39:15.40 0.3 undecidable manual P 280 27.9498 124 0.28 71
IV.MNO.SHZ. 2017-08-26T20:39:15.72 0.1 positive manual P 331 33.3444 119 -0.1 97
IV.HLNI.HHZ. 2017-08-26T20:39:15.82 0.1 positive manual P 181 35.5422 117 -0.3 93
IV.EMSG.HHZ. 2017-08-26T20:39:13.68 0.6 undecidable manual P 20 17.871 139 -0.27 48
IV.ESLN.HHZ. 2017-08-26T20:39:13.01 0.1 positive manual P 72 8.6802 158 -0.19 100
IV.EPZF.HHZ. 2017-08-26T20:39:13.29 0.1 positive manual P 353 17.3715 140 -0.6 88
IV.ESML.HHZ. 2017-08-26T20:39:12.61 0.1 undecidable manual P 181 5.5944 165 -0.44 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ESLN.HHE. ML:2.8 0.004425 0.42 AML other m 2017-08-26T20:39:16.90
IV.ESLN.HHN. ML:2.8 0.0037400000000000003 0.42 AML other m 2017-08-26T20:39:17.30
IV.ESML.HHN. ML:2.6 0.00273 1.24 AML other m 2017-08-26T20:39:17.05
IV.EPZF.HHN. ML:2.7 0.00273 0.5 AML other m 2017-08-26T20:39:18.72
IV.ESML.HHE. ML:2.6 0.00294 1.38 AML other m 2017-08-26T20:39:18.94
IV.EPZF.HHE. ML:2.9 0.004215 0.34 AML other m 2017-08-26T20:39:19.80
IV.EMSG.HHE. ML:2.8 0.003375 0.34 AML other m 2017-08-26T20:39:20.23
IV.HLNI.HHE. ML:2.8 0.002265 0.44 AML other m 2017-08-26T20:39:22.45
IV.MNO.SHE. ML:0.0 0.0005905 1.32 AML other m 2017-08-26T20:39:22.95
IV.HLNI.HHN. ML:2.5 0.0010364999999999999 0.74 AML other m 2017-08-26T20:39:22.74
IV.GALF.HHN. ML:2.6 0.00146 1.56 AML other m 2017-08-26T20:39:23.90
IV.EPOZ.HHE. ML:2.7 0.002005 1.3 AML other m 2017-08-26T20:39:23.91
IV.GALF.HHE. ML:2.6 0.00145 0.7 AML other m 2017-08-26T20:39:23.15
IV.EPOZ.HHN. ML:2.6 0.001465 1.64 AML other m 2017-08-26T20:39:23.16
IV.MUCR.HHE. ML:2.8 0.0016200000000000001 0.54 AML other m 2017-08-26T20:39:24.75
IV.MUCR.HHN. ML:2.5 0.0009410000000000001 0.74 AML other m 2017-08-26T20:39:24.18
IV.EMSG.HHN. ML:2.7 0.0028650000000000004 0.4 AML other m 2017-08-26T20:39:25.11
IV.MSFR.HHN. ML:1.8 0.00015099999999999998 0.28 AML other m 2017-08-26T20:39:26.24
IV.MSFR.HHE. ML:1.7 0.0001225 0.32 AML other m 2017-08-26T20:39:26.45
IV.AIO.HHE. ML:2.1 0.000345 0.34 AML other m 2017-08-26T20:39:27.33
IV.MNO.SHN. ML:0.0 0.0005965 0.44 AML other m 2017-08-26T20:39:27.41
IV.AIO.HHN. ML:2.1 0.0003305 0.42 AML other m 2017-08-26T20:39:27.83
IV.AGST.EHN. ML:2.4 0.000546 0.32 AML other m 2017-08-26T20:39:27.79
IV.AGST.EHE. ML:2.5 0.000641 0.58 AML other m 2017-08-26T20:39:28.85
IV.MEU.SHE. ML:0.0 0.000969 0.32 AML other m 2017-08-26T20:39:29.09
IV.HAGA.HHE. ML:2.1 0.00028100000000000005 0.32 AML other m 2017-08-26T20:39:29.15
IV.HAGA.HHN. ML:2.2 0.000378 0.56 AML other m 2017-08-26T20:39:30.36
IV.RAFF.HHN. ML:2.5 0.0005965 0.36 AML other m 2017-08-26T20:39:32.87
IV.RAFF.HHE. ML:2.7 0.0007635000000000001 1.34 AML other m 2017-08-26T20:39:33.02
IV.SSY.HHE. ML:2.3 0.000389 0.48 AML other m 2017-08-26T20:39:33.53
IV.SSY.HHN. ML:2.6 0.0008205 1.64 AML other m 2017-08-26T20:39:33.87
IV.MILZ.HHN. ML:2.3 0.0003095 1.12 AML other m 2017-08-26T20:39:33.92
IV.MILZ.HHE. ML:2.3 0.00031 0.5 AML other m 2017-08-26T20:39:34.42
IV.IVPL.HHN. ML:3.1 0.00157 0.44 AML other m 2017-08-26T20:39:36.23
IV.IVPL.HHE. ML:3.0 0.0013900000000000002 0.52 AML other m 2017-08-26T20:39:36.58
IV.MEU.SHN. ML:0.0 0.0005605 0.32 AML other m 2017-08-26T20:39:37.17
IV.MSRU.HHN. ML:2.2 0.0001875 1.18 AML other m 2017-08-26T20:39:39.20
IV.MSRU.HHE. ML:2.3 0.00022749999999999997 1.18 AML other m 2017-08-26T20:39:40.66
IV.RESU.HHE. ML:2.1 0.00017099999999999998 0.5 AML other m 2017-08-26T20:39:41.25
IV.RESU.HHN. ML:2.1 0.000194 0.6 AML other m 2017-08-26T20:39:41.34
IV.HPAC.HHE. ML:2.6 0.0003165 0.26 AML other m 2017-08-26T20:39:43.35
IV.HPAC.HHN. ML:2.5 0.000253 0.96 AML other m 2017-08-26T20:39:45.23
IV.CAR1.HHE. ML:2.3 0.000053400000000000004 0.38 AML other m 2017-08-26T20:40:11.70
IV.CAR1.HHN. ML:2.3 0.000053 1.38 AML other m 2017-08-26T20:40:11.76
IV.CELI.HHN. ML:2.3 0.00004485 1.1 AML other m 2017-08-26T20:40:19.41
MN.CUC.HHN. ML:2.0 0.000014 0.72 AML other m 2017-08-26T20:40:21.31
MN.CUC.HHE. ML:2.0 0.000016250000000000002 0.6 AML other m 2017-08-26T20:40:28.46
IV.CELI.HHE. ML:2.2 0.000032500000000000004 0.78 AML other m 2017-08-26T20:40:30.06
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