Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 08-03-2021 and time 19:31:07 (Italy) in region 8 km SW Bronte (CT)

A magnitude ML 2.1 earthquake occured in region: 8 km SW Bronte (CT), on

  • 08-03-2021 18:31:07 (UTC)
  • 08-03-2021 19:31:07 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.7260, 14.7870 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
Adrano CT 8 36122 36122
Bronte CT 8 19172 55294
Biancavilla CT 12 24007 79301
Centuripe EN 12 5470 84771
Maletto CT 14 3920 88691
Cesarò ME 15 2439 91130
Santa Maria di Licodia CT 15 7641 98771
Regalbuto EN 15 7277 106048
Maniace CT 15 3765 109813
San Teodoro ME 16 1403 111216
Ragalna CT 17 3924 115140
Troina EN 18 9373 124513
Paternò CT 19 48228 172741
Catenanuova EN 19 4866 177607

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km W of Acireale (52622 inhabitants)
36 Km NW of Catania (314555 inhabitants)
69 Km E of Caltanissetta (63360 inhabitants)
85 Km SW of Messina (238439 inhabitants)
86 Km NW of Siracusa (122291 inhabitants)
87 Km SW of Reggio di Calabria (183035 inhabitants)
87 Km NE of Gela (75827 inhabitants)
89 Km N of Vittoria (63339 inhabitants)
89 Km N of Ragusa (73313 inhabitants)
96 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 2.1 2021-03-08
18:31:07		 37.726 14.7872 8 2021-07-12
16:55:05		 Bollettino Sismico Italiano INGV 88934951
Reviewed
Rev200 		ML 1.9 2021-03-08
18:31:06		 37.719 14.768 4 2021-04-12
16:41:55		 Sala Operativa INGV-OE (Catania) 88384581
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-03-08 18:31:07 ± 0.07
Latitude 37.7260 ± 0.0045
Longitude 14.7872 ± 0.0045
Depth (km) 8 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 88934951

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 501
Semi-minor axis of confidence ellipse (meter) 344
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 4
Circular confidence region, given by single value of horizontal uncertainty (meter) 500.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 68
Number of associated phases, regardless of their use for origin computation 38
Number of defining phases 38
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.25
Epicentral distance of station closest to the epicenter (degree) 0.03058
Epicentral distance of station farthest from the epicenter (degree) 0.81119
Number of stations at which the event was observed 31
Number of stations from which data was used for origin computation 31
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 30
Type of magnitude ML
Reference to an origin 88934951
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-04-09 14:46:26

ML:1.9

Field Value
Value 1.9
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 88384581
Agency INGV
Autore Sala Operativa INGV-OE (Catania)
Time of creation (UTC) 2021-03-22 16:37:39
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.HAVL.HHZ. 2021-03-08T18:31:22.75 0.6 undecidable manual P 161 90.0432 50 -0.19 42
IV.MPNC.HHZ. 2021-03-08T18:31:20.08 0.6 undecidable manual P 47 67.9764 50 0.53 41
IV.RAFF.HHZ. 2021-03-08T18:31:20.14 0.3 undecidable manual P 214 67.1772 50 0.71 57
IV.IVPL.HNE. 2021-03-08T18:31:20.59 0.6 undecidable manual P 13 74.0703 50 0.1 44
IV.MILZ.HHZ. 2021-03-08T18:31:20.25 0.3 undecidable manual P 33 71.8725 50 0.1 67
IV.SSY.HHZ. 2021-03-08T18:31:19.21 0.6 undecidable manual P 158 67.8765 50 -0.33 43
IV.HAGA.HHZ. 2021-03-08T18:31:17.95 0.6 undecidable manual P 146 58.6968 50 -0.16 45
IV.HCRL.HHZ. 2021-03-08T18:31:16.94 0.3 undecidable manual P 156 53.7018 50 -0.41 65
IV.AIO.HHZ. 2021-03-08T18:31:16.19 0.1 undecidable manual P 55 47.619 50 -0.22 91
IV.HLNI.HHZ. 2021-03-08T18:31:15.40 0.1 undecidable manual P 170 42.5241 50 -0.23 92
IV.NOV.HHZ. 2021-03-08T18:31:15.92 0.3 undecidable manual P 42 45.3213 50 -0.14 70
IV.MUCR.HHZ. 2021-03-08T18:31:14.41 0.1 undecidable manual P 12 35.9418 50 -0.21 93
IV.EMPL.HHZ. 2021-03-08T18:31:14.10 0.6 undecidable manual S 108 16.872 116 0.31 47
IV.MSFR.HHZ. 2021-03-08T18:31:14.99 0.3 undecidable manual P 333 38.2284 50 0.03 72
IV.GALF.HHZ. 2021-03-08T18:31:14.40 0.3 undecidable manual S 265 19.4694 113 -0.2 72
IV.ECTS.HHZ. 2021-03-08T18:31:14.02 0.6 undecidable manual P 59 34.0437 104 -0.26 46
IV.ESLN.HHZ. 2021-03-08T18:31:14.10 0.6 undecidable manual S 102 16.872 116 0.33 47
IV.ESAL.HHZ. 2021-03-08T18:31:13.80 0.6 undecidable manual P 84 30.6471 105 0.16 47
IV.EMFO.HHE. 2021-03-08T18:31:12.69 0.6 undecidable manual P 88 26.6511 107 -0.17 48
IV.EPIT.HHZ. 2021-03-08T18:31:12.67 0.1 undecidable manual P 68 25.4523 108 0.03 98
IV.ECHR.HHE. 2021-03-08T18:31:12.00 0.6 undecidable manual S 112 11.877 125 -0.29 48
IV.EMCN.HHN. 2021-03-08T18:31:12.53 0.1 undecidable manual P 71 22.755 110 0.4 92
IV.ENIC.HHZ. 2021-03-08T18:31:12.64 0.6 undecidable manual P 117 23.0547 109 0.45 45
IV.ECBD.HHN. 2021-03-08T18:31:12.94 0.1 undecidable manual P 77 26.9508 107 0.02 98
IV.CAGR.HHE. 2021-03-08T18:31:12.86 1.0 undecidable manual P 246 27.75 106 -0.22 24
IV.GALF.HHZ. 2021-03-08T18:31:12.02 0.1 undecidable manual P 265 19.4694 113 0.52 89
IV.EPZF.HHZ. 2021-03-08T18:31:12.30 0.6 undecidable manual S 29 12.4764 123 -0.16 49
IV.ESPC.HHN. 2021-03-08T18:31:11.92 0.1 undecidable manual P 100 21.3675 111 0.05 99
IV.EMPL.HHZ. 2021-03-08T18:31:11.34 0.1 negative manual P 108 16.872 116 0.3 94
IV.ECZM.HHN. 2021-03-08T18:31:11.90 0.6 undecidable manual S 87 10.2786 129 0.06 50
IV.EMSG.HHZ. 2021-03-08T18:31:11.17 0.1 positive manual P 54 17.6712 115 -0.02 100
IV.ESLN.HHZ. 2021-03-08T18:31:11.35 0.1 undecidable manual P 102 16.872 116 0.32 94
IV.EPZF.HHZ. 2021-03-08T18:31:10.53 0.1 positive manual P 29 12.4764 123 0.26 96
IV.ESVO.HHE. 2021-03-08T18:31:10.63 0.1 undecidable manual P 69 14.9739 119 -0.06 100
IV.ESCV.HHZ. 2021-03-08T18:31:10.20 0.3 undecidable manual S 47 3.3966 158 -0.15 75
IV.ECZM.HHN. 2021-03-08T18:31:09.51 0.1 negative manual P 87 10.2786 129 -0.4 93
IV.ECHR.HHE. 2021-03-08T18:31:09.78 0.1 positive manual P 112 11.877 125 -0.39 93
IV.ESCV.HHZ. 2021-03-08T18:31:08.62 0.1 positive manual P 47 3.3966 158 -0.44 94
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.EPZF.HHE. ML:1.8 0.0008854740000000001 0.2816 AML other m 2021-03-08T18:31:16.87
IV.EMSG.HHE. ML:2.1 0.0012216805000000001 0.3584 AML other m 2021-03-08T18:31:18.60
IV.EPZF.HHN. ML:2.0 0.0011565157 0.384 AML other m 2021-03-08T18:31:18.37
IV.EMSG.HHN. ML:2.1 0.0011429249500000001 0.2432 AML other m 2021-03-08T18:31:18.66
IV.ENIC.HHN. ML:2.3 0.0013922675 0.4992 AML other m 2021-03-08T18:31:19.85
IV.ENIC.HNN. ML:2.4 0.001562676 0.3584 AML other m 2021-03-08T18:31:19.88
IV.EMPL.HHE. ML:2.6 0.0037641090000000003 0.2816 AML other m 2021-03-08T18:31:20.27
IV.ENIC.HNE. ML:2.4 0.00180776 0.256 AML other m 2021-03-08T18:31:20.06
IV.EMPL.HHN. ML:2.7 0.004348174 0.2048 AML other m 2021-03-08T18:31:20.10
IV.ESAL.HHN. ML:2.1 0.0006919999999999999 1.64 AML other m 2021-03-08T18:31:22.09
IV.EPIT.HHE. ML:2.0 0.0006701787 0.256 AML other m 2021-03-08T18:31:22.32
IV.HLNI.HHN. ML:1.8 0.00019250000000000002 0.38 AML other m 2021-03-08T18:31:23.37
IV.ENIC.HHE. ML:2.4 0.0015049999999999998 0.3 AML other m 2021-03-08T18:31:23.56
IV.HLNI.HHE. ML:1.8 0.00021799999999999999 0.6 AML other m 2021-03-08T18:31:23.46
IV.EPIT.HHN. ML:2.3 0.00122 0.42 AML other m 2021-03-08T18:31:24.35
IV.ESAL.HHE. ML:2.1 0.0006423687000000001 0.3712 AML other m 2021-03-08T18:31:27.04
IV.AIO.HHN. ML:1.8 0.00016473155000000002 0.2304 AML other m 2021-03-08T18:31:26.92
IV.MUCR.HHE. ML:1.5 0.000135 0.54 AML other m 2021-03-08T18:31:27.59
IV.AIO.HHE. ML:1.8 0.0001678463 0.2816 AML other m 2021-03-08T18:31:27.85
IV.MUCR.HHN. ML:1.7 0.000213 1.5 AML other m 2021-03-08T18:31:28.07
IV.HCRL.HHN. ML:1.4 0.000055376015 0.2048 AML other m 2021-03-08T18:31:28.06
IV.HCRL.HHE. ML:1.5 0.00008209570899999999 0.1792 AML other m 2021-03-08T18:31:31.23
IV.SSY.HHE. ML:2.2 0.0003077836 0.2048 AML other m 2021-03-08T18:31:31.70
IV.SSY.HHN. ML:2.6 0.000687 0.5 AML other m 2021-03-08T18:31:34.19
IV.MPNC.HHE. ML:2.1 0.000228 0.48 AML other m 2021-03-08T18:31:35.66
IV.MPNC.HHN. ML:2.1 0.00020150000000000002 1.46 AML other m 2021-03-08T18:31:35.23
IV.MILZ.HHE. ML:2.3 0.0002935 1.44 AML other m 2021-03-08T18:31:37.20
IV.MILZ.HHN. ML:2.1 0.0001955 1.48 AML other m 2021-03-08T18:31:37.19
IV.HAVL.HHN. ML:2.2 0.0001783609 0.2176 AML other m 2021-03-08T18:31:41.36
IV.HAVL.HHE. ML:2.0 0.00012536295 0.2816 AML other m 2021-03-08T18:31:41.66
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