Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 22-10-2020 and time 16:05:18 (Italy) in region 10 km N Ragalna (CT)

A magnitude ML 2.1 earthquake occured in region: 10 km N Ragalna (CT), on

  • 22-10-2020 14:05:18 (UTC)
  • 22-10-2020 16:05:18 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.7180, 14.9400 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
Ragalna CT 10 3924 3924
Biancavilla CT 10 24007 27931
Adrano CT 11 36122 64053
Santa Maria di Licodia CT 12 7641 71694
Bronte CT 12 19172 90866
Nicolosi CT 14 7463 98329
Maletto CT 14 3920 102249
Belpasso CT 14 28108 130357
Zafferana Etnea CT 15 9517 139874
Pedara CT 15 14102 153976
Milo CT 16 1087 155063
Paternò CT 16 48228 203291
Trecastagni CT 17 10910 214201
Camporotondo Etneo CT 18 5023 219224
San Pietro Clarenza CT 18 7743 226967
Santa Venerina CT 18 8592 235559
Randazzo CT 18 10900 246459
Sant'Alfio CT 18 1582 248041
Viagrande CT 18 8563 256604
Mascalucia CT 19 31958 288562
Tremestieri Etneo CT 20 20589 309151
Aci Bonaccorsi CT 20 3524 312675
Maniace CT 20 3765 316440

Municipalities with at least 50000 inhabitants

An earthquake occurred to
23 Km NW of Acireale (52622 inhabitants)
27 Km NW of Catania (314555 inhabitants)
76 Km SW of Reggio di Calabria (183035 inhabitants)
76 Km SW of Messina (238439 inhabitants)
79 Km NW of Siracusa (122291 inhabitants)
81 Km E of Caltanissetta (63360 inhabitants)
90 Km N of Ragusa (73313 inhabitants)
93 Km NE of Vittoria (63339 inhabitants)
95 Km NE of Gela (75827 inhabitants)
97 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
14:05:18		 37.7178 14.9402 28 2021-02-26
14:56:18		 Bollettino Sismico Italiano INGV 87124721
Reviewed
Rev200 		ML 2.0 2020-10-22
14:05:17		 37.704 14.912 20 2021-02-23
11:06:02		 Sala Operativa INGV_OE (Catania) 84029221
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-22 14:05:18 ± 0.2
Latitude 37.7178 ± 0.0063
Longitude 14.9402 ± 0.0125
Depth (km) 28 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 87124721

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1099
Semi-minor axis of confidence ellipse (meter) 602
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 267
Circular confidence region, given by single value of horizontal uncertainty (meter) 1100.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 58
Number of associated phases, regardless of their use for origin computation 37
Number of defining phases 37
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.41
Epicentral distance of station closest to the epicenter (degree) 0.03687
Epicentral distance of station farthest from the epicenter (degree) 0.77162
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 21
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.1
Num. used stations
Type of magnitude ML
Reference to an origin 84029221
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2020-10-22 14:19:22

ML:2.1

Field Value
Value 2.1
Uncertainty 0.4
Num. used stations 33
Type of magnitude ML
Reference to an origin 87124721
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-02-13 19:28:16
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.HMDC.HHZ. 2020-10-22T14:05:44.17 0.3 undecidable manual S 189 85.3479 103 0.26 62
IV.HAVL.HHZ. 2020-10-22T14:05:43.88 0.6 undecidable manual S 169 85.6476 103 -0.11 43
IV.RAFF.HHZ. 2020-10-22T14:05:42.60 0.6 undecidable manual S 223 74.8695 105 1.39 25
IV.SSY.HHZ. 2020-10-22T14:05:38.62 0.3 undecidable manual S 169 63.2922 108 0.39 64
IV.CAGR.HHE. 2020-10-22T14:05:36.35 0.6 undecidable manual S 255 40.1265 119 3.8 2
IV.AGST.EHE. 2020-10-22T14:05:36.75 0.3 undecidable manual S 154 57.0984 110 0.08 69
IV.HAGA.HHZ. 2020-10-22T14:05:35.14 0.3 undecidable manual S 158 51.6039 113 -0.17 68
IV.MSFR.HHZ. 2020-10-22T14:05:34.27 0.3 undecidable manual S 319 46.5201 115 0.2 68
IV.HCRL.HHN. 2020-10-22T14:05:34.52 0.3 undecidable manual S 170 48.9177 114 -0.13 69
IV.HMDC.HHZ. 2020-10-22T14:05:33.44 0.6 undecidable manual P 189 85.3479 103 0.41 40
IV.HAVL.HHZ. 2020-10-22T14:05:32.74 0.1 undecidable manual P 169 85.6476 103 -0.34 83
IV.MUCR.HHZ. 2020-10-22T14:05:32.09 0.6 undecidable manual S 351 36.5412 122 0.36 45
IV.HLNI.HHZ. 2020-10-22T14:05:32.41 0.3 undecidable manual S 188 41.4252 118 -0.44 66
IV.AIO.HHZ. 2020-10-22T14:05:32.62 0.6 undecidable manual S 42 38.0286 121 0.55 44
IV.RAFF.HHZ. 2020-10-22T14:05:31.49 0.1 undecidable manual P 223 74.8695 105 0.02 89
IV.GALF.HHZ. 2020-10-22T14:05:30.46 0.6 undecidable manual S 269 32.8449 125 -0.44 46
IV.EPOZ.HNZ. 2020-10-22T14:05:30.08 0.3 undecidable manual S 103 22.3554 137 1.28 49
IV.ECTS.HHZ. 2020-10-22T14:05:29.22 0.3 undecidable manual S 41 24.1536 135 0.09 74
IV.SSY.HHZ. 2020-10-22T14:05:29.58 0.1 undecidable manual P 169 63.2922 108 -0.17 89
IV.HCRL.HHN. 2020-10-22T14:05:28.22 0.3 undecidable manual P 170 48.9177 114 0.54 63
IV.HAGA.HHZ. 2020-10-22T14:05:28.75 0.6 undecidable manual P 158 51.6039 113 0.68 40
IV.AGST.EHE. 2020-10-22T14:05:28.59 0.6 undecidable manual P 154 57.0984 110 -0.26 44
IV.MSFR.HHZ. 2020-10-22T14:05:27.41 0.3 undecidable manual P 319 46.5201 115 0.06 70
IV.CAGR.HHE. 2020-10-22T14:05:27.42 0.1 undecidable manual P 255 40.1265 119 0.95 70
IV.EPZF.HHZ. 2020-10-22T14:05:27.79 0.3 undecidable manual S 328 13.875 151 0.34 70
IV.AIO.HHZ. 2020-10-22T14:05:26.51 0.1 undecidable manual P 42 38.0286 121 0.32 92
IV.HLNI.HHZ. 2020-10-22T14:05:26.02 0.1 undecidable manual P 188 41.4252 118 -0.63 83
IV.GALF.HHZ. 2020-10-22T14:05:25.17 0.1 undecidable manual P 269 32.8449 125 -0.34 92
IV.MUCR.HHZ. 2020-10-22T14:05:25.65 0.1 undecidable manual P 351 36.5412 122 -0.35 90
IV.EPOZ.HNZ. 2020-10-22T14:05:24.81 0.1 undecidable manual P 103 22.3554 137 0.5 90
IV.ECTS.HHZ. 2020-10-22T14:05:24.01 0.1 undecidable manual P 41 24.1536 135 -0.48 88
IV.EPIT.HHZ. 2020-10-22T14:05:23.67 0.3 undecidable manual P 45 14.5743 150 0.09 75
IV.EMCN.HHZ. 2020-10-22T14:05:23.33 0.1 undecidable manual P 45 11.5773 155 -0.04 100
IV.EMSG.HHZ. 2020-10-22T14:05:22.89 0.1 undecidable manual P 4 11.4774 155 -0.47 92
IV.EPZF.HHZ. 2020-10-22T14:05:22.84 0.1 undecidable manual P 328 13.875 151 -0.69 85
IV.ESLN.HHZ. 2020-10-22T14:05:22.70 0.3 undecidable manual P 132 4.0959 171 -0.33 72
IV.ECHR.HHZ. 2020-10-22T14:05:22.38 0.1 undecidable manual P 214 4.1958 170 -0.65 87
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.EPZF.HHE. ML:2.5 0.0014322095 0.5376 AML other m 2020-10-22T14:05:27.98
IV.EPZF.HHN. ML:2.3 0.0009165759 0.2368 AML other m 2020-10-22T14:05:28.57
IV.EMSG.HHN. ML:2.2 0.0008696941499999999 0.3392 AML other m 2020-10-22T14:05:28.76
IV.ECTS.HHE. ML:2.0 0.00045125695 0.2816 AML other m 2020-10-22T14:05:29.94
IV.ECTS.HHN. ML:2.0 0.00044546734999999997 0.4032 AML other m 2020-10-22T14:05:30.02
IV.EMSG.HHE. ML:2.3 0.0010559933 0.48 AML other m 2020-10-22T14:05:38.82
IV.GALF.HHN. ML:2.2 0.0005809999999999999 0.38 AML other m 2020-10-22T14:05:31.79
IV.GALF.HHE. ML:2.3 0.00062 1.34 AML other m 2020-10-22T14:05:33.28
IV.HLNI.HHE. ML:1.6 0.00010063287 0.1216 AML other m 2020-10-22T14:05:33.35
IV.AIO.HHE. ML:2.0 0.00026900000000000003 0.42 AML other m 2020-10-22T14:05:33.15
IV.HLNI.HHN. ML:1.6 0.00010335097999999999 0.1152 AML other m 2020-10-22T14:05:34.11
IV.AIO.HHN. ML:1.8 0.00018943515 0.3392 AML other m 2020-10-22T14:05:33.94
IV.MUCR.HHN. ML:1.6 0.000119581305 0.5376 AML other m 2020-10-22T14:05:35.01
IV.MSFR.HHE. ML:1.4 0.00005666011 0.32 AML other m 2020-10-22T14:05:36.42
IV.MSFR.HHN. ML:1.2 0.000042009405 0.2176 AML other m 2020-10-22T14:05:35.90
IV.SSY.HHE. ML:2.4 0.00046766595 0.2048 AML other m 2020-10-22T14:05:38.72
IV.MUCR.HHE. ML:1.5 0.00009797338 0.4032 AML other m 2020-10-22T14:05:32.56
IV.SSY.HHN. ML:2.8 0.0010872849 0.1984 AML other m 2020-10-22T14:05:41.74
IV.HAVL.HHE. ML:2.3 0.0002505 0.16 AML other m 2020-10-22T14:05:45.11
IV.HAVL.HHN. ML:2.5 0.0003788768 0.2176 AML other m 2020-10-22T14:05:45.23
IV.HMDC.HHE. ML:2.2 0.00018100885 0.2624 AML other m 2020-10-22T14:05:45.55
IV.HMDC.HHN. ML:2.1 0.0001365 0.3 AML other m 2020-10-22T14:05:45.45
IV.ESLN.HHN. ML:2.3 0.00108916385 0.7808 AML other m 2020-10-22T14:05:34.38
IV.ESLN.HHE. ML:2.3 0.001179472 0.5952 AML other m 2020-10-22T14:05:33.96
IV.EMCN.HNN. ML:2.4 0.0014926795 0.5888 AML other m 2020-10-22T14:05:25.26
IV.EMCN.HHE. ML:2.6 0.0018122155 0.4608 AML other m 2020-10-22T14:05:28.93
IV.EMCN.HHN. ML:2.4 0.0014561199999999998 0.6016 AML other m 2020-10-22T14:05:25.26
IV.EMCN.HNE. ML:2.6 0.0018279490000000002 0.4608 AML other m 2020-10-22T14:05:28.93
IV.GALF.HNE. ML:1.6 0.00013403825 1.0496 AML other m 2020-10-22T14:05:32.41
IV.GALF.HNN. ML:1.5 0.00011092919500000001 0.608 AML other m 2020-10-22T14:05:39.25
IV.RAFF.HHE. ML:1.7 0.0000751844 0.48 AML other m 2020-10-22T14:05:43.68
IV.RAFF.HHN. ML:1.5 0.000038324305 0.2816 AML other m 2020-10-22T14:05:48.66
IV.HMDC.HNE. ML:2.2 0.0001827054 0.2688 AML other m 2020-10-22T14:05:45.68
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