Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 22-10-2020 and time 19:39:49 (Italy) in region 9 km NE Biancavilla (CT)

A magnitude ML 2.1 earthquake occured in region: 9 km NE Biancavilla (CT), on

  • 22-10-2020 17:39:49 (UTC)
  • 22-10-2020 19:39:49 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.7110, 14.9210 at 28 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 9 24007 24007
Ragalna CT 9 3924 27931
Adrano CT 9 36122 64053
Santa Maria di Licodia CT 11 7641 71694
Bronte CT 12 19172 90866
Belpasso CT 14 28108 118974
Maletto CT 14 3920 122894
Nicolosi CT 14 7463 130357
Paternò CT 15 48228 178585
Pedara CT 16 14102 192687
Zafferana Etnea CT 16 9517 202204
Milo CT 17 1087 203291
Trecastagni CT 17 10910 214201
Camporotondo Etneo CT 18 5023 219224
San Pietro Clarenza CT 18 7743 226967
Centuripe EN 19 5470 232437
Randazzo CT 19 10900 243337
Viagrande CT 19 8563 251900
Mascalucia CT 19 31958 283858
Santa Venerina CT 19 8592 292450
Maniace CT 20 3765 296215
Tremestieri Etneo CT 20 20589 316804

Municipalities with at least 50000 inhabitants

An earthquake occurred to
24 Km W of Acireale (52622 inhabitants)
27 Km NW of Catania (314555 inhabitants)
78 Km SW of Messina (238439 inhabitants)
78 Km SW of Reggio di Calabria (183035 inhabitants)
79 Km E of Caltanissetta (63360 inhabitants)
79 Km NW of Siracusa (122291 inhabitants)
89 Km N of Ragusa (73313 inhabitants)
91 Km NE of Vittoria (63339 inhabitants)
93 Km NE of Gela (75827 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 2020-10-22
17:39:49		 37.7107 14.9207 28 2021-02-26
14:56:19		 Bollettino Sismico Italiano INGV 87156511
Reviewed
Rev200 		ML 2.1 2020-10-22
17:39:49		 37.718 14.888 21 2021-02-23
12:06:43		 Sala Operativa INGV_OE (Catania) 84032591
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-22 17:39:49 ± 0.14
Latitude 37.7107 ± 0.0045
Longitude 14.9207 ± 0.0080
Depth (km) 28 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 87156511

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 633
Semi-minor axis of confidence ellipse (meter) 336
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 277
Circular confidence region, given by single value of horizontal uncertainty (meter) 630.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 40
Number of associated phases, regardless of their use for origin computation 49
Number of defining phases 49
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.37
Epicentral distance of station closest to the epicenter (degree) 0.02518
Epicentral distance of station farthest from the epicenter (degree) 1.00544
Number of stations at which the event was observed 30
Number of stations from which data was used for origin computation 30
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.1
Num. used stations
Type of magnitude ML
Reference to an origin 84032591
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2020-10-22 17:53:36

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 48
Type of magnitude ML
Reference to an origin 87156511
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-02-14 18:20:41
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.HPAC.HHZ. 2020-10-22T17:40:22.06 0.6 undecidable manual S 175 111.5994 100 -0.38 39
IV.IACL.HHZ. 2020-10-22T17:40:21.24 0.6 undecidable manual S 332 103.7184 101 0.88 34
IV.HAVL.HHZ. 2020-10-22T17:40:15.69 0.3 undecidable manual S 168 85.1481 103 0.18 63
IV.HMDC.HHZ. 2020-10-22T17:40:15.83 0.3 undecidable manual S 188 84.249 103 0.56 58
IV.SSY.HHZ. 2020-10-22T17:40:10.01 0.3 undecidable manual S 168 62.7927 108 0.25 65
IV.AGST.EHZ. 2020-10-22T17:40:08.46 0.3 undecidable manual S 152 57.1983 110 0.13 67
IV.CAGR.HHZ. 2020-10-22T17:40:08.11 0.6 undecidable manual S 255 38.2284 121 4.34 2
IV.HPAC.HHZ. 2020-10-22T17:40:08.36 0.1 undecidable manual P 175 111.5994 100 -0.28 79
IV.IACL.HHZ. 2020-10-22T17:40:07.34 0.1 undecidable manual P 332 103.7184 101 -0.1 82
IV.HCRL.HHZ. 2020-10-22T17:40:06.06 0.6 undecidable manual S 168 48.4182 114 -0.13 46
IV.HAGA.HHZ. 2020-10-22T17:40:06.77 0.3 undecidable manual S 156 51.5151 113 -0.17 68
IV.MSRU.HHZ. 2020-10-22T17:40:04.37 0.3 undecidable manual P 40 80.0643 104 0.5 60
IV.HMDC.HHZ. 2020-10-22T17:40:04.33 0.1 undecidable manual P 188 84.249 103 -0.17 85
IV.HLNI.HHZ. 2020-10-22T17:40:04.45 0.3 undecidable manual S 186 40.4262 119 0.18 69
IV.AIO.HHZ. 2020-10-22T17:40:04.39 0.3 undecidable manual S 43 39.8268 120 0.26 68
IV.HAVL.HHZ. 2020-10-22T17:40:04.43 0.1 undecidable manual P 168 85.1481 103 -0.21 84
IV.PETRA.HHZ. 2020-10-22T17:40:03.12 0.6 undecidable manual P 281 71.9724 106 0.45 41
IV.MTTG.HHZ. 2020-10-22T17:40:03.50 0.6 undecidable manual P 64 75.5688 105 0.3 42
IV.RAFF.HHZ. 2020-10-22T17:40:03.00 0.1 undecidable manual P 222 73.1712 106 0.16 87
IV.GALF.HHZ. 2020-10-22T17:40:02.38 0.6 undecidable manual S 270 31.0467 127 0.2 47
IV.EPOZ.HHZ. 2020-10-22T17:40:01.97 0.3 undecidable manual S 100 23.8539 135 1.23 47
IV.EFIU.HHZ. 2020-10-22T17:40:01.74 0.3 undecidable manual S 71 26.8509 132 0.43 67
IV.SSY.HHZ. 2020-10-22T17:40:01.31 0.1 undecidable manual P 168 62.7927 108 -0.01 92
IV.ECTS.HHZ. 2020-10-22T17:40:00.73 0.3 undecidable manual S 43 25.8519 133 -0.38 68
IV.AGST.EHZ. 2020-10-22T17:40:00.33 0.1 undecidable manual P 152 57.1983 110 -0.17 90
IV.EPZF.HHZ. 2020-10-22T17:39:59.33 0.6 undecidable manual S 336 13.7751 151 0.22 48
IV.HAGA.HHZ. 2020-10-22T17:39:59.46 0.1 undecidable manual P 156 51.5151 113 -0.23 90
IV.ESML.HHZ. 2020-10-22T17:39:59.09 0.3 undecidable manual S 199 10.878 157 0.32 70
IV.EPIT.HHZ. 2020-10-22T17:39:59.53 0.3 undecidable manual S 47 16.3725 147 0.07 74
IV.HCRL.HHZ. 2020-10-22T17:39:59.32 0.3 undecidable manual P 168 48.4182 114 0.06 70
IV.EVRN.HHZ. 2020-10-22T17:39:59.20 0.3 undecidable manual S 97 18.9699 142 -0.68 63
IV.AIO.HHZ. 2020-10-22T17:39:58.27 0.1 undecidable manual P 43 39.8268 120 0.2 92
IV.MSFR.HHZ. 2020-10-22T17:39:58.98 0.1 undecidable manual P 321 46.0206 116 0.07 94
IV.CAGR.HHZ. 2020-10-22T17:39:58.89 0.1 undecidable manual P 255 38.2284 121 1.03 70
IV.MUCR.HHZ. 2020-10-22T17:39:57.41 0.1 undecidable manual P 354 37.1295 122 -0.3 90
IV.EVRN.HHZ. 2020-10-22T17:39:57.20 0.3 undecidable manual P 97 18.9699 142 1.59 39
IV.HLNI.HHZ. 2020-10-22T17:39:57.74 0.1 undecidable manual P 186 40.4262 119 -0.41 88
IV.EPOZ.HHZ. 2020-10-22T17:39:56.28 0.1 undecidable manual P 100 23.8539 135 0.17 95
IV.EFIU.HHZ. 2020-10-22T17:39:56.62 0.3 undecidable manual P 71 26.8509 132 0.18 71
IV.ECTS.HHZ. 2020-10-22T17:39:56.10 0.3 undecidable manual P 43 25.8519 133 -0.23 70
IV.GALF.HHZ. 2020-10-22T17:39:56.81 0.1 undecidable manual P 270 31.0467 127 -0.14 94
IV.EPIT.HHZ. 2020-10-22T17:39:55.35 0.3 undecidable manual P 47 16.3725 147 -0.02 74
IV.ENIC.HHZ. 2020-10-22T17:39:55.09 0.1 undecidable manual P 135 12.4764 154 0.01 100
IV.ECHR.HNZ. 2020-10-22T17:39:54.16 0.1 undecidable manual P 194 2.7972 174 -0.49 92
IV.EPZF.HHZ. 2020-10-22T17:39:54.57 0.1 positive manual P 336 13.7751 151 -0.6 86
IV.ESML.HHZ. 2020-10-22T17:39:54.74 0.1 undecidable manual P 199 10.878 157 -0.24 96
IV.EMCN.HHZ. 2020-10-22T17:39:54.59 0.1 undecidable manual P 48 13.3755 152 -0.55 88
IV.ESLN.HHZ. 2020-10-22T17:39:54.16 0.3 undecidable manual P 112 5.0949 169 -0.55 67
IV.EMSG.HHZ. 2020-10-22T17:39:54.64 0.1 positive manual P 12 12.4764 154 -0.44 91
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.EPZF.HHE. ML:2.4 0.0013050000000000002 0.48 AML other m 2020-10-22T17:39:59.75
IV.EMSG.HHE. ML:2.3 0.00098318855 0.2432 AML other m 2020-10-22T17:40:01.94
IV.EPZF.HHN. ML:2.3 0.0010899999999999998 0.28 AML other m 2020-10-22T17:40:00.68
IV.ESML.HHE. ML:2.4 0.001165 0.26 AML other m 2020-10-22T17:40:01.20
IV.EPOZ.HHN. ML:2.1 0.0005774999999999999 0.16 AML other m 2020-10-22T17:40:02.67
IV.ENIC.HHE. ML:2.4 0.00124 0.18 AML other m 2020-10-22T17:40:03.75
IV.ENIC.HNE. ML:2.4 0.0014399999999999999 0.16 AML other m 2020-10-22T17:40:03.85
IV.EPOZ.HHE. ML:2.1 0.00053532245 0.32 AML other m 2020-10-22T17:40:04.08
IV.EMSG.HHN. ML:2.3 0.0010371335 0.2048 AML other m 2020-10-22T17:40:01.13
IV.MUCR.HHE. ML:1.7 0.0001365 0.5 AML other m 2020-10-22T17:40:04.35
IV.GALF.HHN. ML:2.2 0.0006360000000000001 0.3 AML other m 2020-10-22T17:40:04.77
IV.GALF.HHE. ML:2.5 0.0011099999999999999 0.58 AML other m 2020-10-22T17:40:04.90
IV.HLNI.HHE. ML:1.9 0.00020800000000000001 0.08 AML other m 2020-10-22T17:40:04.97
IV.HLNI.HHN. ML:1.9 0.00022020794999999999 0.1024 AML other m 2020-10-22T17:40:04.83
IV.AIO.HHE. ML:2.0 0.00030235630000000004 0.4096 AML other m 2020-10-22T17:40:04.92
IV.AIO.HHN. ML:1.9 0.0002045157 0.256 AML other m 2020-10-22T17:40:05.30
IV.ENIC.HHN. ML:2.4 0.0012050000000000001 0.26 AML other m 2020-10-22T17:40:06.30
IV.MUCR.HHN. ML:1.6 0.00012367625 0.32 AML other m 2020-10-22T17:40:06.75
IV.ENIC.HNN. ML:2.4 0.0012412238 0.2176 AML other m 2020-10-22T17:40:06.21
IV.HAGA.HHE. ML:1.8 0.00013633895 0.2432 AML other m 2020-10-22T17:40:10.16
IV.HAGA.HHN. ML:1.8 0.00012456545 0.1024 AML other m 2020-10-22T17:40:11.56
IV.MSFR.HHN. ML:1.4 0.00006379999999999999 0.72 AML other m 2020-10-22T17:40:08.24
IV.HCRL.HHE. ML:2.0 0.00020548875 0.0896 AML other m 2020-10-22T17:40:08.01
IV.MSFR.HHE. ML:1.5 0.00007159999999999999 1.3 AML other m 2020-10-22T17:40:08.12
IV.AGST.EHE. ML:2.2 0.0002919991 0.2304 AML other m 2020-10-22T17:40:12.09
IV.HCRL.HHN. ML:1.9 0.0001693741 0.1408 AML other m 2020-10-22T17:40:09.91
IV.AGST.EHN. ML:2.2 0.0002956485 0.1408 AML other m 2020-10-22T17:40:12.04
IV.SSY.HHN. ML:2.9 0.0013106024999999999 0.2048 AML other m 2020-10-22T17:40:12.22
IV.SSY.HHE. ML:2.5 0.00063094155 0.1536 AML other m 2020-10-22T17:40:10.39
IV.RAFF.HHE. ML:1.7 0.00006323332 0.256 AML other m 2020-10-22T17:40:15.33
IV.HAVL.HHN. ML:2.7 0.0005640868 0.1408 AML other m 2020-10-22T17:40:16.89
IV.MSRU.HHN. ML:1.9 0.00009615 0.28 AML other m 2020-10-22T17:40:17.03
IV.HMDC.HHE. ML:2.2 0.00020105085 0.1536 AML other m 2020-10-22T17:40:17.21
IV.HAVL.HHE. ML:2.5 0.00038144625 0.1664 AML other m 2020-10-22T17:40:16.76
IV.PETRA.HHE. ML:1.7 0.0000711 0.44 AML other m 2020-10-22T17:40:18.30
IV.HMDC.HHN. ML:2.2 0.0001893604 0.128 AML other m 2020-10-22T17:40:18.10
IV.RAFF.HHN. ML:1.6 0.00006021835 0.3968 AML other m 2020-10-22T17:40:19.55
IV.MSRU.HHE. ML:1.9 0.0001069 0.28 AML other m 2020-10-22T17:40:20.03
IV.IACL.HHN. ML:1.9 0.00006789473 0.3968 AML other m 2020-10-22T17:40:24.98
IV.PETRA.HHN. ML:1.6 0.000067399355 0.4608 AML other m 2020-10-22T17:40:21.15
IV.IACL.HHE. ML:1.9 0.00006958152 0.32 AML other m 2020-10-22T17:40:26.60
IV.HPAC.HHN. ML:2.0 0.0000863124605 0.3584 AML other m 2020-10-22T17:40:26.58
IV.HPAC.HHE. ML:2.1 0.00009927719999999999 0.32 AML other m 2020-10-22T17:40:29.91
IV.GALF.HNE. ML:1.5 0.00011685155 0.7808 AML other m 2020-10-22T17:40:08.23
IV.GALF.HNN. ML:1.6 0.000118792075 0.4096 AML other m 2020-10-22T17:40:05.58
IV.MTTG.HHN. ML:1.6 0.000056481169999999995 0.6272 AML other m 2020-10-22T17:40:21.43
IV.HMDC.HNN. ML:2.1 0.00014020165 0.1152 AML other m 2020-10-22T17:40:18.04
IV.HMDC.HNE. ML:2.3 0.00024732765 0.3712 AML other m 2020-10-22T17:40:17.21
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