Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 27-05-2018 and time 21:45:35 (Italy) in region 10 km SE Bronte (CT)

A magnitude ML 1.8 earthquake occured in region: 10 km SE Bronte (CT), on

  • 27-05-2018 19:45:35 (UTC)
  • 27-05-2018 21:45:35 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.7390, 14.9300 at 8 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
Bronte CT 10 19172 19172
Maletto CT 12 3920 23092
Adrano CT 12 36122 59214
Ragalna CT 12 3924 63138
Biancavilla CT 12 24007 87145
Santa Maria di Licodia CT 14 7641 94786
Randazzo CT 16 10900 105686
Zafferana Etnea CT 16 9517 115203
Nicolosi CT 16 7463 122666
Milo CT 17 1087 123753
Belpasso CT 17 28108 151861
Maniace CT 17 3765 155626
Pedara CT 18 14102 169728
Paternò CT 18 48228 217956
Trecastagni CT 19 10910 228866
Sant'Alfio CT 19 1582 230448
Santa Venerina CT 19 8592 239040
Santa Domenica Vittoria ME 20 980 240020

Municipalities with at least 50000 inhabitants

An earthquake occurred to
25 Km NW of Acireale (52622 inhabitants)
30 Km NW of Catania (314555 inhabitants)
75 Km SW of Messina (238439 inhabitants)
75 Km SW of Reggio di Calabria (183035 inhabitants)
81 Km E of Caltanissetta (63360 inhabitants)
82 Km NW of Siracusa (122291 inhabitants)
92 Km N of Ragusa (73313 inhabitants)
94 Km NE of Vittoria (63339 inhabitants)
96 Km NE of Gela (75827 inhabitants)
99 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 1.8 2018-05-27
19:45:35		 37.7392 14.93 8 2019-04-24
14:50:57		 Bollettino Sismico Italiano INGV 61959911
Reviewed
Rev100 		ML 2.0 2018-05-27
19:45:34		 37.7267 14.9267 9 2018-05-27
19:54:17		 Sala Sismica INGV-Roma 57293251
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-05-27 19:45:35 ± 0.09
Latitude 37.7392 ± 0.0054
Longitude 14.9300 ± 0.0091
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 61959911

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 708
Semi-minor axis of confidence ellipse (meter) 528
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 52
Circular confidence region, given by single value of horizontal uncertainty (meter) 710.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 62
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 21
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.33
Epicentral distance of station closest to the epicenter (degree) 0.05756
Epicentral distance of station farthest from the epicenter (degree) 0.68528
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 13
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 14
Type of magnitude ML
Reference to an origin 61959911
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2018-10-15 08:35:15

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations 22
Type of magnitude ML
Reference to an origin 57293251
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-05-27 19:54:17
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MEU.SHZ. 2018-05-27T19:45:58.50 1.0 undecidable manual S 187 70.1742 50 0.72 19
IV.SSY.HHZ. 2018-05-27T19:45:57.38 0.6 undecidable manual S 169 65.6898 50 0.8 36
IV.HLNI.HHZ. 2018-05-27T19:45:51.04 0.6 undecidable manual S 187 43.623 50 0.35 44
IV.RAFF.HHZ. 2018-05-27T19:45:50.13 0.1 undecidable manual P 221 76.0683 50 0.66 76
IV.MEU.SHZ. 2018-05-27T19:45:48.16 0.6 undecidable manual P 187 70.1742 50 -0.42 42
IV.GALF.HHZ. 2018-05-27T19:45:47.45 0.6 undecidable manual S 264 32.0457 105 -0.04 48
IV.SSY.HHZ. 2018-05-27T19:45:47.68 1.0 undecidable manual P 169 65.6898 50 -0.2 22
IV.MNO.SHZ. 2018-05-27T19:45:46.29 0.6 undecidable manual S 316 29.6481 106 -0.39 45
IV.HLNI.HHZ. 2018-05-27T19:45:43.89 0.1 undecidable manual P 187 43.623 50 -0.58 83
IV.AIO.HHZ. 2018-05-27T19:45:43.39 0.1 undecidable manual P 46 36.9297 50 -0.06 95
IV.MNO.SHZ. 2018-05-27T19:45:42.13 0.1 undecidable manual P 316 29.6481 106 -0.03 97
IV.GALF.HHZ. 2018-05-27T19:45:42.63 0.3 positive manual P 264 32.0457 105 0 73
IV.MUCR.HHZ. 2018-05-27T19:45:42.74 0.1 positive manual P 352 34.0437 50 -0.26 92
IV.EMSG.HHZ. 2018-05-27T19:45:41.09 0.6 undecidable manual S 11 9.1797 132 0.77 41
IV.EPZF.HHZ. 2018-05-27T19:45:41.67 0.6 undecidable manual S 326 11.3775 126 0.77 41
IV.EPOZ.HHZ. 2018-05-27T19:45:41.08 0.1 undecidable manual P 108 23.8539 109 0.01 98
IV.ESML.HHZ. 2018-05-27T19:45:39.03 0.1 positive manual P 198 14.1747 121 -0.26 95
IV.ESLN.HHZ. 2018-05-27T19:45:39.80 0.6 undecidable manual S 142 6.3936 143 0.14 49
IV.EMSG.HHZ. 2018-05-27T19:45:38.55 0.1 positive manual P 11 9.1797 132 0.05 100
IV.EPZF.HHZ. 2018-05-27T19:45:38.69 0.1 positive manual P 326 11.3775 126 -0.14 98
IV.ESLN.HHZ. 2018-05-27T19:45:37.86 0.1 positive manual P 142 6.3936 143 -0.25 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.EPOZ.HHE. ML:1.9 0.000501 0.44 AML other m 2018-05-27T19:45:47.44
IV.MUCR.HHE. ML:1.7 0.000202 0.42 AML other m 2018-05-27T19:45:50.60
IV.MNO.SHN. ML:0.0 0.0004415 0.52 AML other m 2018-05-27T19:45:51.53
IV.EPOZ.HHN. ML:1.8 0.000361 0.32 AML other m 2018-05-27T19:45:52.31
IV.HLNI.HHE. ML:1.5 0.0000998 0.6 AML other m 2018-05-27T19:45:53.12
IV.AIO.HHN. ML:1.7 0.000203 1.46 AML other m 2018-05-27T19:45:53.26
IV.HLNI.HHN. ML:1.5 0.00009265 0.7 AML other m 2018-05-27T19:45:53.57
IV.GALF.HHN. ML:1.9 0.000361 0.44 AML other m 2018-05-27T19:45:54.56
IV.GALF.HHE. ML:1.8 0.000306 0.64 AML other m 2018-05-27T19:45:54.75
IV.MUCR.HHN. ML:1.7 0.00021850000000000003 0.3 AML other m 2018-05-27T19:45:54.78
IV.MNO.SHE. ML:0.0 0.0004125 0.48 AML other m 2018-05-27T19:45:54.71
IV.AIO.HHE. ML:1.8 0.00022849999999999997 0.58 AML other m 2018-05-27T19:45:55.55
IV.SSY.HHE. ML:2.0 0.0001715 0.38 AML other m 2018-05-27T19:46:02.01
IV.RAFF.HHN. ML:1.6 0.0000586 1.26 AML other m 2018-05-27T19:46:04.85
IV.MEU.SHN. ML:0.0 0.0001565 0.32 AML other m 2018-05-27T19:46:05.19
IV.RAFF.HHE. ML:1.7 0.00007680000000000001 0.5 AML other m 2018-05-27T19:46:06.17
IV.MEU.SHE. ML:0.0 0.00011365 0.4 AML other m 2018-05-27T19:46:06.93
IV.SSY.HHN. ML:2.2 0.0002925 0.3 AML other m 2018-05-27T19:46:08.59
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