Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 01-09-2021 and time 18:04:30 (Italy) in region 8 km W Bronte (CT)

A magnitude ML 2.0 earthquake occured in region: 8 km W Bronte (CT), on

  • 01-09-2021 16:04:30 (UTC)
  • 01-09-2021 18:04:30 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.7720, 14.7470 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.

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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 8 19172 19172
Cesarò ME 9 2439 21611
San Teodoro ME 10 1403 23014
Maniace CT 12 3765 26779
Maletto CT 12 3920 30699
Troina EN 13 9373 40072
Adrano CT 14 36122 76194
Regalbuto EN 16 7277 83471
Centuripe EN 17 5470 88941
Biancavilla CT 18 24007 112948
Gagliano Castelferrato EN 20 3593 116541

Municipalities with at least 50000 inhabitants

An earthquake occurred to
41 Km W of Acireale (52622 inhabitants)
42 Km NW of Catania (314555 inhabitants)
68 Km E of Caltanissetta (63360 inhabitants)
85 Km SW of Messina (238439 inhabitants)
87 Km W of Reggio di Calabria (183035 inhabitants)
90 Km NE of Gela (75827 inhabitants)
93 Km NW of Siracusa (122291 inhabitants)
93 Km N of Vittoria (63339 inhabitants)
94 Km N of Ragusa (73313 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 2.0 2021-09-01
16:04:30		 37.7718 14.7468 30 2022-03-30
13:04:41		 Bollettino Sismico Italiano INGV 102052271
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-01 16:04:30 ± 0.16
Latitude 37.7718 ± 0.0063
Longitude 14.7468 ± 0.0102
Depth (km) 30 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 102052271

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 860
Semi-minor axis of confidence ellipse (meter) 473
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 252
Circular confidence region, given by single value of horizontal uncertainty (meter) 860.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 80
Number of associated phases, regardless of their use for origin computation 43
Number of defining phases 34
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.31
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.86515
Number of stations at which the event was observed 27
Number of stations from which data was used for origin computation 19
Magnitude information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations 30
Type of magnitude ML
Reference to an origin 102052271
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-03-17 00:52:22
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SACR.HHZ. 2021-09-01T16:06:02.14 3.0 undecidable manual Sn -6.08 0
IT.MMP1.HGZ. 2021-09-01T16:05:55.89 3.0 negative manual Pg 18.860001 0
IX.SCL3.EHZ.02 2021-09-01T16:05:51.44 3.0 undecidable manual Sn 0.87 0
IV.GIUL.HHZ. 2021-09-01T16:05:37.13 3.0 undecidable manual Pg 10.74 0
IV.CRTO.HHZ. 2021-09-01T16:05:24.92 3.0 positive manual Pg 11.63 0
IV.RESU.HHZ. 2021-09-01T16:05:10.41 3.0 undecidable manual Sg 11.98 0
IV.GIZZ.HHZ. 2021-09-01T16:05:09.69 3.0 undecidable manual Sn -3.41 0
IV.CMDO.HHZ. 2021-09-01T16:05:00.62 3.0 undecidable manual Sn -0.73 0
IV.HAVL.HHZ. 2021-09-01T16:04:59.86 0.6 undecidable manual S 160 96.0261 103 0.35 41
IV.HSRS.HHZ. 2021-09-01T16:04:56.80 0.6 undecidable manual S 151 86.1471 104 -0.16 43
IV.SSY.HHZ. 2021-09-01T16:04:54.50 0.6 undecidable manual S 157 73.9704 107 0.68 39
IV.HAGA.HHZ. 2021-09-01T16:04:51.59 0.6 undecidable manual S 146 64.8906 109 0.08 46
IV.HCRL.HHZ. 2021-09-01T16:04:50.59 0.3 undecidable manual S 155 59.7957 111 0.36 44
IV.HAVL.HHZ. 2021-09-01T16:04:47.27 0.3 undecidable manual P 160 96.0261 103 -0.13 64
IV.HLNI.HHZ. 2021-09-01T16:04:47.73 0.6 undecidable manual S 167 48.2184 116 0.31 45
IV.GIZZ.HHZ. 2021-09-01T16:04:46.81 3.0 negative manual Pn -2.67 0
IV.HSRS.HHZ. 2021-09-01T16:04:45.54 0.3 undecidable manual P 151 86.1471 104 -0.39 61
IV.MCPD.HHZ. 2021-09-01T16:04:45.37 0.6 undecidable manual S 358 38.628 123 0.19 46
IV.MSFR.HHZ. 2021-09-01T16:04:44.24 0.6 undecidable manual S 335 32.0457 128 0.48 43
IV.SSY.HHZ. 2021-09-01T16:04:44.00 0.1 undecidable manual P 157 73.9704 107 -0.12 89
IV.HAGA.HHZ. 2021-09-01T16:04:42.54 0.3 undecidable manual P 146 64.8906 109 -0.25 88
IV.CSLB.HHZ. 2021-09-01T16:04:42.77 0.3 undecidable manual P 287 63.0924 110 0.24 65
IV.MUCR.HHZ. 2021-09-01T16:04:42.84 0.6 undecidable manual S 20 32.0457 128 -0.92 38
IV.ECHR.HHE. 2021-09-01T16:04:42.10 0.6 undecidable manual S 123 17.3715 147 1.01 37
IV.PETRA.HHN. 2021-09-01T16:04:41.97 0.3 undecidable manual P 277 55.7997 113 0.48 62
IV.GALF.HHZ. 2021-09-01T16:04:41.24 0.6 undecidable manual S 247 17.1717 147 0.17 48
IV.HCRL.HHZ. 2021-09-01T16:04:41.83 0.1 undecidable manual P 155 59.7957 111 -0.22 89
IV.EMSG.HHZ. 2021-09-01T16:04:41.86 0.6 undecidable manual S 73 18.5703 145 0.59 44
IV.EPZF.HHZ. 2021-09-01T16:04:40.24 0.6 undecidable manual S 59 11.2776 157 -0.09 50
IV.HLNI.HHZ. 2021-09-01T16:04:40.17 0.1 undecidable manual P 167 48.2184 116 -0.25 90
IV.ECZM.HHN. 2021-09-01T16:04:40.76 0.6 undecidable manual S 108 14.4744 152 0.06 50
IV.MCPD.HHZ. 2021-09-01T16:04:39.16 0.1 negative manual P 358 38.628 123 0.03 95
IV.ESCV.HHZ. 2021-09-01T16:04:38.98 0.6 undecidable manual S 115 6.5934 166 -0.96 38
IV.MUCR.HHZ. 2021-09-01T16:04:38.18 0.1 undecidable manual P 20 32.0457 128 -0.13 96
IV.MSFR.HHZ. 2021-09-01T16:04:38.16 0.1 undecidable manual P 335 32.0457 128 -0.15 96
IV.EPIT.HHZ. 2021-09-01T16:04:38.48 0.1 undecidable manual P 81 27.5502 133 0.7 82
IV.EMPL.HHZ. 2021-09-01T16:04:37.47 0.3 undecidable manual P 118 22.1556 140 0.26 71
IV.GALF.HHZ. 2021-09-01T16:04:36.69 0.1 undecidable manual P 247 17.1717 147 -0.06 100
IV.ECHR.HHE. 2021-09-01T16:04:36.84 0.3 undecidable manual P 123 17.3715 147 0.07 74
IV.EMSG.HHZ. 2021-09-01T16:04:36.96 0.1 undecidable manual P 73 18.5703 145 0.09 99
IV.EPZF.HHZ. 2021-09-01T16:04:36.12 0.1 undecidable manual P 59 11.2776 157 -0.21 98
IV.ECZM.HHN. 2021-09-01T16:04:36.25 0.1 undecidable manual P 108 14.4744 152 -0.29 95
IV.ESCV.HHZ. 2021-09-01T16:04:35.50 0.1 undecidable manual P 115 6.5934 166 -0.6 89
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ESCV.HHE. ML:2.4 0.001295 0.54 AML other m 2021-09-01T16:04:40.19
IV.ESCV.HHN. ML:2.4 0.0014449999999999999 1.34 AML other m 2021-09-01T16:04:41.03
IV.EPZF.HHN. ML:2.0 0.000506 0.64 AML other m 2021-09-01T16:04:41.05
IV.EPZF.HHE. ML:1.8 0.00028649999999999997 0.86 AML other m 2021-09-01T16:04:41.99
IV.GALF.HHE. ML:2.2 0.0007475 0.7 AML other m 2021-09-01T16:04:42.42
IV.EMSG.HHE. ML:2.0 0.000386 1.06 AML other m 2021-09-01T16:04:43.32
IV.MUCR.HHE. ML:1.4 0.0000906 1.8 AML other m 2021-09-01T16:04:43.92
IV.GALF.HHN. ML:2.2 0.0006895 0.88 AML other m 2021-09-01T16:04:43.53
IV.MUCR.HHN. ML:1.6 0.000123 0.32 AML other m 2021-09-01T16:04:44.33
IV.MCPD.HHE. ML:1.5 0.0000948 0.46 AML other m 2021-09-01T16:04:45.79
IV.EMSG.HHN. ML:2.0 0.0004555 1.46 AML other m 2021-09-01T16:04:46.24
IV.MCPD.HHN. ML:1.5 0.00008585000000000001 1.44 AML other m 2021-09-01T16:04:46.89
IV.MSFR.HHN. ML:1.0 0.000030200000000000002 0.82 AML other m 2021-09-01T16:04:46.52
IV.HLNI.HHE. ML:2.0 0.0002325 0.14 AML other m 2021-09-01T16:04:48.19
IV.HLNI.HHN. ML:2.2 0.000366 0.22 AML other m 2021-09-01T16:04:48.10
IV.MSFR.HHE. ML:1.0 0.0000278 1.12 AML other m 2021-09-01T16:04:48.94
IV.EMPL.HHN. ML:2.2 0.0007185 0.24 AML other m 2021-09-01T16:04:48.64
IV.EMPL.HHE. ML:2.1 0.000533 0.22 AML other m 2021-09-01T16:04:49.40
IV.EPIT.HHE. ML:2.0 0.0003275 0.32 AML other m 2021-09-01T16:04:49.87
IV.HCRL.HHE. ML:1.9 0.0001375 1.22 AML other m 2021-09-01T16:04:50.28
IV.EPIT.HHN. ML:1.9 0.0002685 1.56 AML other m 2021-09-01T16:04:50.14
IV.HAGA.HHN. ML:2.0 0.00016299999999999998 0.36 AML other m 2021-09-01T16:04:51.90
IV.HAGA.HHE. ML:1.9 0.0001295 0.34 AML other m 2021-09-01T16:04:51.88
IV.HCRL.HHN. ML:1.9 0.000148 0.92 AML other m 2021-09-01T16:04:53.45
IV.SSY.HHE. ML:2.6 0.0005105 0.86 AML other m 2021-09-01T16:04:55.17
IV.SSY.HHN. ML:3.0 0.001405 0.74 AML other m 2021-09-01T16:04:56.84
IV.HSRS.HHE. ML:1.7 0.0000615 0.52 AML other m 2021-09-01T16:04:57.37
IV.HSRS.HHN. ML:1.9 0.00008319999999999999 0.92 AML other m 2021-09-01T16:04:57.27
IV.HAVL.HHE. ML:2.1 0.00012220000000000002 0.42 AML other m 2021-09-01T16:05:03.85
IV.HAVL.HHN. ML:2.2 0.00014050000000000003 0.64 AML other m 2021-09-01T16:05:04.79
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