Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 27-11-2020 and time 11:35:56 (Italy) in region 12 km E Bronte (CT)

A magnitude ML 1.5 earthquake occured in region: 12 km E Bronte (CT), on

  • 27-11-2020 10:35:56 (UTC)
  • 27-11-2020 11:35:56 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.7520, 14.9630 at 9 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 12 19172 19172
Maletto CT 12 3920 23092
Ragalna CT 14 3924 27016
Milo CT 14 1087 28103
Zafferana Etnea CT 14 9517 37620
Randazzo CT 14 10900 48520
Biancavilla CT 15 24007 72527
Adrano CT 15 36122 108649
Sant'Alfio CT 16 1582 110231
Nicolosi CT 16 7463 117694
Santa Maria di Licodia CT 16 7641 125335
Santa Venerina CT 17 8592 133927
Pedara CT 17 14102 148029
Belpasso CT 18 28108 176137
Trecastagni CT 18 10910 187047
Moio Alcantara ME 18 717 187764
Santa Domenica Vittoria ME 18 980 188744
Maniace CT 18 3765 192509
Linguaglossa CT 19 5403 197912
Giarre CT 20 27659 225571
Viagrande CT 20 8563 234134
Paternò CT 20 48228 282362

Municipalities with at least 50000 inhabitants

An earthquake occurred to
24 Km NW of Acireale (52622 inhabitants)
30 Km NW of Catania (314555 inhabitants)
72 Km SW of Messina (238439 inhabitants)
72 Km SW of Reggio di Calabria (183035 inhabitants)
82 Km NW of Siracusa (122291 inhabitants)
84 Km E of Caltanissetta (63360 inhabitants)
94 Km N of Ragusa (73313 inhabitants)
97 Km NE of Vittoria (63339 inhabitants)
99 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 1.5 2020-11-27
10:35:56		 37.7522 14.9633 9 2021-02-26
14:56:17		 Bollettino Sismico Italiano INGV 86658961
Reviewed
Rev200 		ML 1.4 2020-11-27
10:35:55		 37.746 14.966 6 2021-01-28
17:40:36		 Sala Operativa INGV_OE (Catania) 85048201
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-11-27 10:35:56 ± 0.11
Latitude 37.7522 ± 0.0054
Longitude 14.9633 ± 0.0091
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 86658961

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 780
Semi-minor axis of confidence ellipse (meter) 503
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 117
Circular confidence region, given by single value of horizontal uncertainty (meter) 780.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 97
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 12
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.21
Epicentral distance of station closest to the epicenter (degree) 0.05936
Epicentral distance of station farthest from the epicenter (degree) 0.31656
Number of stations at which the event was observed 9
Number of stations from which data was used for origin computation 9
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 86658961
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-01-28 17:40:20

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 85048201
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2020-11-27 10:39:41
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MUCR.HHZ. 2020-11-27T10:36:03.27 0.3 undecidable manual P 346 33.2445 50 0.1 71
IV.GALF.HHZ. 2020-11-27T10:36:03.50 0.3 undecidable manual P 263 35.1426 50 0.03 72
IV.ECHR.HHE. 2020-11-27T10:36:01.46 0.6 undecidable manual S 211 8.5803 137 0.67 43
IV.EMSG.HHZ. 2020-11-27T10:36:00.63 0.6 undecidable manual S 351 7.6812 140 0.02 50
IV.ESLN.HHZ. 2020-11-27T10:36:00.27 0.6 undecidable manual S 171 6.5934 145 -0.1 50
IV.EPIT.HHN. 2020-11-27T10:35:59.43 0.1 undecidable manual P 51 10.4784 132 0.21 96
IV.ECBD.HHN. 2020-11-27T10:35:59.29 0.1 undecidable manual P 74 11.2776 130 -0.05 99
IV.EPZF.HHZ. 2020-11-27T10:35:59.22 0.3 undecidable manual P 311 12.2766 127 -0.28 71
IV.EMCN.HHZ. 2020-11-27T10:35:58.74 0.3 undecidable manual P 55 7.4814 141 -0.07 75
IV.EMSG.HHZ. 2020-11-27T10:35:58.88 0.1 undecidable manual P 351 7.6812 140 0.05 100
IV.ESLN.HHZ. 2020-11-27T10:35:58.54 0.1 undecidable manual P 171 6.5934 145 -0.16 98
IV.ECHR.HHE. 2020-11-27T10:35:58.78 0.1 undecidable manual P 211 8.5803 137 -0.16 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ESLN.HHN. ML:1.7 0.0009428071499999999 0.4224 AML other m 2020-11-27T10:36:00.58
IV.EMSG.HHN. ML:1.6 0.00067079535 0.16 AML other m 2020-11-27T10:36:04.48
IV.EPZF.HHE. ML:1.2 0.00020406065 0.32 AML other m 2020-11-27T10:36:03.83
IV.GALF.HHN. ML:1.4 0.0001075333 0.3392 AML other m 2020-11-27T10:36:15.79
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