Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.4 on date 04-01-2021 and time 00:20:31 (Italy) in region 8 km N Ragalna (CT)

A magnitude ML 2.4 earthquake occured in region: 8 km N Ragalna (CT), on

  • 03-01-2021 23:20:31 (UTC)
  • 04-01-2021 00:20:31 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.7040, 14.9330 at 24 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 8 3924 3924
Biancavilla CT 9 24007 27931
Adrano CT 10 36122 64053
Santa Maria di Licodia CT 11 7641 71694
Bronte CT 13 19172 90866
Nicolosi CT 13 7463 98329
Belpasso CT 13 28108 126437
Paternò CT 14 48228 174665
Pedara CT 15 14102 188767
Zafferana Etnea CT 15 9517 198284
Maletto CT 15 3920 202204
Trecastagni CT 16 10910 213114
Milo CT 16 1087 214201
Camporotondo Etneo CT 17 5023 219224
San Pietro Clarenza CT 17 7743 226967
Viagrande CT 18 8563 235530
Mascalucia CT 18 31958 267488
Santa Venerina CT 18 8592 276080
Tremestieri Etneo CT 19 20589 296669
Centuripe EN 19 5470 302139
Sant'Alfio CT 19 1582 303721
Randazzo CT 19 10900 314621
Aci Bonaccorsi CT 20 3524 318145
Gravina di Catania CT 20 25838 343983

Municipalities with at least 50000 inhabitants

An earthquake occurred to
23 Km W of Acireale (52622 inhabitants)
26 Km NW of Catania (314555 inhabitants)
77 Km SW of Reggio di Calabria (183035 inhabitants)
77 Km SW of Messina (238439 inhabitants)
78 Km NW of Siracusa (122291 inhabitants)
80 Km E of Caltanissetta (63360 inhabitants)
88 Km N of Ragusa (73313 inhabitants)
91 Km NE of Vittoria (63339 inhabitants)
93 Km NE of Gela (75827 inhabitants)
95 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 2.4 2021-01-03
23:20:31		 37.7045 14.9327 24 2021-07-12
16:54:57		 Bollettino Sismico Italiano INGV 86802851
Reviewed
Rev200 		ML 2.4 2021-01-03
23:20:31		 37.703 14.909 19 2021-02-05
11:21:51		 Sala Operativa INGV_OE (Catania) 86001211
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-03 23:20:31 ± 0.09
Latitude 37.7045 ± 0.0036
Longitude 14.9327 ± 0.0057
Depth (km) 24 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 86802851

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 483
Semi-minor axis of confidence ellipse (meter) 202
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 285
Circular confidence region, given by single value of horizontal uncertainty (meter) 480.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 34
Number of associated phases, regardless of their use for origin computation 57
Number of defining phases 57
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.02428
Epicentral distance of station farthest from the epicenter (degree) 1.99020
Number of stations at which the event was observed 35
Number of stations from which data was used for origin computation 35
Magnitudes information

ML:2.4

Field Value
Value 2.4
Uncertainty 0.3
Num. used stations 44
Type of magnitude ML
Reference to an origin 86802851
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-02-05 11:21:37

ML:2.4

Field Value
Value 2.4
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 86001211
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2021-01-03 23:32:01
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CET2.HHZ. 2021-01-03T23:21:04.03 0.6 undecidable manual P 23 220.9122 54 -0.47 24
IV.HMDC.HHZ. 2021-01-03T23:20:57.32 0.6 undecidable manual S 189 83.7495 100 0.61 38
IV.HAVL.HHZ. 2021-01-03T23:20:57.47 0.6 undecidable manual S 169 84.3489 100 0.61 39
IV.MILZ.HHZ. 2021-01-03T23:20:53.10 0.3 undecidable manual S 22 68.0763 103 0.49 62
IV.MPNC.HHZ. 2021-01-03T23:20:51.22 0.6 undecidable manual S 37 61.2942 105 0.36 43
IV.SSY.HHZ. 2021-01-03T23:20:51.76 0.6 undecidable manual S 168 61.8936 105 0.74 38
MN.CEL.HHZ. 2021-01-03T23:20:49.44 0.3 undecidable manual P 53 104.2179 98 0.23 61
IV.MSFR.HHZ. 2021-01-03T23:20:47.40 0.6 undecidable manual S 321 47.2194 110 0.13 46
IT.LNT.HGZ. 2021-01-03T23:20:47.18 0.3 undecidable manual S 172 46.5201 110 0.07 71
IV.HCRL.HHZ. 2021-01-03T23:20:47.76 0.6 undecidable manual S 169 47.619 110 0.4 44
IV.HLNI.HHZ. 2021-01-03T23:20:45.44 0.6 undecidable manual S 188 39.8268 114 -0.01 48
IV.HAVL.HHZ. 2021-01-03T23:20:45.90 0.1 positive manual P 169 84.3489 100 -0.28 83
IV.HMDC.HHZ. 2021-01-03T23:20:45.68 0.1 undecidable manual P 189 83.7495 100 -0.41 81
IV.PLLN.EHZ. 2021-01-03T23:20:45.36 0.3 undecidable manual P 295 76.1682 102 0.42 61
IV.CSLB.HHZ. 2021-01-03T23:20:45.41 0.3 undecidable manual P 289 80.8635 101 -0.25 64
IV.AIO.HHZ. 2021-01-03T23:20:45.90 0.6 undecidable manual S 42 39.627 114 0.51 44
IV.GALF.HHZ. 2021-01-03T23:20:44.48 0.6 undecidable manual S 271 32.1456 120 0.86 37
IV.RAFF.HHZ. 2021-01-03T23:20:44.65 0.1 undecidable manual P 223 73.371 102 0.13 88
IV.IVPL.HHZ. 2021-01-03T23:20:44.97 0.3 undecidable manual P 3 74.6697 102 0.26 64
IV.PETRA.HHZ. 2021-01-03T23:20:44.80 0.3 undecidable manual P 282 73.1712 102 0.31 63
IV.MUCR.HHZ. 2021-01-03T23:20:44.75 0.6 undecidable manual S 352 37.9287 116 -0.23 46
IV.MILZ.HHZ. 2021-01-03T23:20:44.32 0.3 undecidable manual P 22 68.0763 103 0.6 60
IV.SSY.HHZ. 2021-01-03T23:20:42.74 0.1 positive manual P 168 61.8936 105 -0.06 91
IV.MPNC.HHZ. 2021-01-03T23:20:42.63 0.1 undecidable manual P 37 61.2942 105 -0.08 91
IV.ECTS.HHZ. 2021-01-03T23:20:42.41 0.6 undecidable manual S 40 25.6521 127 0.21 47
IV.HCRL.HHZ. 2021-01-03T23:20:40.49 0.1 positive manual P 169 47.619 110 -0.2 91
IV.ECBD.HHZ. 2021-01-03T23:20:40.95 0.6 undecidable manual S 58 15.873 143 0.62 43
IV.CAGR.HHZ. 2021-01-03T23:20:40.44 0.1 undecidable manual P 257 39.0276 115 0.96 71
IV.EVRN.HHZ. 2021-01-03T23:20:40.45 0.6 undecidable manual S 95 17.871 139 -0.21 47
IV.MSFR.HHZ. 2021-01-03T23:20:40.39 0.3 undecidable manual P 321 47.2194 110 -0.25 68
IV.ENIC.HHZ. 2021-01-03T23:20:40.22 0.6 undecidable manual S 136 11.2776 152 0.56 45
IT.LNT.HGZ. 2021-01-03T23:20:40.32 0.3 undecidable manual P 172 46.5201 110 -0.22 68
IV.EPIT.HHZ. 2021-01-03T23:20:40.83 0.6 undecidable manual S 43 16.0728 142 0.47 46
IV.ECHR.HNZ. 2021-01-03T23:20:39.49 0.6 undecidable manual S 221 2.6973 173 0.53 45
IV.EMSG.HHZ. 2021-01-03T23:20:39.80 0.6 undecidable manual S 7 12.9759 148 -0.09 50
IV.EMCN.HNZ. 2021-01-03T23:20:39.30 0.6 undecidable manual S 43 13.0758 148 -0.6 43
IV.HLNI.HHZ. 2021-01-03T23:20:39.20 0.1 undecidable manual P 188 39.8268 114 -0.38 89
IV.AIO.HHZ. 2021-01-03T23:20:39.62 0.1 negative manual P 42 39.627 114 0.06 95
IV.MUCR.HHZ. 2021-01-03T23:20:38.91 0.1 positive manual P 352 37.9287 116 -0.41 89
IV.ESLN.HHZ. 2021-01-03T23:20:38.99 0.6 undecidable manual S 109 3.8961 170 -0.01 51
IV.ESML.HHZ. 2021-01-03T23:20:38.99 0.6 undecidable manual S 206 10.6782 153 -0.59 44
IV.GALF.HHZ. 2021-01-03T23:20:38.40 0.1 negative manual P 271 32.1456 120 -0.13 96
IV.ECTS.HHZ. 2021-01-03T23:20:37.51 0.1 negative manual P 40 25.6521 127 -0.2 94
IV.EPOZ.HHZ. 2021-01-03T23:20:37.74 0.1 negative manual P 99 22.755 131 0.39 92
IV.EFIU.HHZ. 2021-01-03T23:20:37.94 0.1 negative manual P 69 26.1516 127 0.18 96
IV.EPIT.HHZ. 2021-01-03T23:20:36.55 0.1 undecidable manual P 43 16.0728 142 -0.1 98
IV.ECPN.HHZ. 2021-01-03T23:20:36.08 0.3 undecidable manual P 47 6.3936 163 0.12 75
IV.ECBD.HHZ. 2021-01-03T23:20:36.38 0.1 negative manual P 58 15.873 143 -0.25 95
IV.EVRN.HHZ. 2021-01-03T23:20:36.56 0.1 negative manual P 95 17.871 139 -0.26 94
IV.EMSG.HHZ. 2021-01-03T23:20:36.12 0.1 positive manual P 7 12.9759 148 -0.26 96
IV.ECNE.HHZ. 2021-01-03T23:20:36.24 0.3 undecidable manual P 42 9.0798 157 0.14 74
IV.EMCN.HNZ. 2021-01-03T23:20:36.12 0.1 positive manual P 43 13.0758 148 -0.26 95
IV.EPZF.HHZ. 2021-01-03T23:20:36.09 0.1 positive manual P 333 14.7741 145 -0.44 92
IV.ENIC.HHZ. 2021-01-03T23:20:36.13 0.3 undecidable manual P 136 11.2776 152 -0.11 74
IV.ESLN.HHZ. 2021-01-03T23:20:35.59 0.1 negative manual P 109 3.8961 170 -0.27 97
IV.ESML.HHZ. 2021-01-03T23:20:35.83 0.1 negative manual P 206 10.6782 153 -0.37 94
IV.ECHR.HNZ. 2021-01-03T23:20:35.70 0.1 positive manual P 221 2.6973 173 -0.14 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ESLN.HHN. ML:2.2 0.0009722155499999999 0.1152 AML other m 2021-01-03T23:20:39.10
IV.ESLN.HHE. ML:2.3 0.001197888 0.3328 AML other m 2021-01-03T23:20:39.26
IV.EMCN.HNN. ML:2.4 0.0013940475000000002 0.7168 AML other m 2021-01-03T23:20:39.61
IV.EMSG.HHE. ML:2.9 0.004560000000000001 0.54 AML other m 2021-01-03T23:20:40.41
IV.EVRN.HHN. ML:2.5 0.001588554 0.1792 AML other m 2021-01-03T23:20:40.81
IV.EPZF.HHN. ML:2.6 0.0019763644999999997 0.832 AML other m 2021-01-03T23:20:40.49
IV.EMSG.HHN. ML:2.8 0.0037949999999999998 0.78 AML other m 2021-01-03T23:20:40.59
IV.EVRN.HNE. ML:2.4 0.0013182749999999998 0.3712 AML other m 2021-01-03T23:20:41.21
IV.EVRN.HNN. ML:2.7 0.0023695775 0.192 AML other m 2021-01-03T23:20:41.14
IV.ENIC.HHE. ML:2.8 0.0033660499999999998 0.1536 AML other m 2021-01-03T23:20:41.26
IV.EPZF.HHE. ML:2.4 0.0013061766 0.2944 AML other m 2021-01-03T23:20:41.31
IV.ENIC.HHN. ML:2.7 0.002948789 0.2304 AML other m 2021-01-03T23:20:41.38
IV.EVRN.HHE. ML:2.7 0.002416539 0.2432 AML other m 2021-01-03T23:20:41.84
IV.ECTS.HHN. ML:2.4 0.001113655 0.3712 AML other m 2021-01-03T23:20:42.52
IV.ECTS.HHE. ML:2.6 0.0016567984999999999 0.5632 AML other m 2021-01-03T23:20:43.16
IV.GALF.HNE. ML:1.8 0.00023245705 0.6144 AML other m 2021-01-03T23:20:45.18
IV.GALF.HHE. ML:2.6 0.0016414525 0.3584 AML other m 2021-01-03T23:20:45.00
IV.GALF.HNN. ML:1.9 0.00026487405000000003 0.448 AML other m 2021-01-03T23:20:44.84
IV.GALF.HHN. ML:2.8 0.0020685435 0.5248 AML other m 2021-01-03T23:20:44.83
IV.MUCR.HHN. ML:1.9 0.0002528792 0.32 AML other m 2021-01-03T23:20:45.09
IV.MUCR.HHE. ML:2.1 0.00036382425 0.3072 AML other m 2021-01-03T23:20:45.46
IV.AIO.HHN. ML:2.5 0.0009625 0.56 AML other m 2021-01-03T23:20:46.76
IV.HLNI.HHE. ML:2.2 0.00045850000000000003 0.6 AML other m 2021-01-03T23:20:46.56
IV.HLNI.HHN. ML:2.2 0.000422 0.88 AML other m 2021-01-03T23:20:46.34
IV.AIO.HHE. ML:2.6 0.0011149999999999999 0.98 AML other m 2021-01-03T23:20:46.41
IV.MSFR.HHE. ML:1.7 0.00012487835 0.896 AML other m 2021-01-03T23:20:47.71
IV.MSFR.HHN. ML:1.7 0.00013285724999999998 0.2304 AML other m 2021-01-03T23:20:47.61
IV.HCRL.HHN. ML:2.3 0.00048112275 0.4224 AML other m 2021-01-03T23:20:47.85
IV.HCRL.HHE. ML:2.2 0.0003708321 0.4224 AML other m 2021-01-03T23:20:48.12
IV.SSY.HHN. ML:3.0 0.0019050500000000001 0.4864 AML other m 2021-01-03T23:20:51.94
IV.MPNC.HHE. ML:2.5 0.000606 0.36 AML other m 2021-01-03T23:20:52.44
IV.MPNC.HHN. ML:2.3 0.0003479011 0.5376 AML other m 2021-01-03T23:20:52.28
IV.MILZ.HHE. ML:2.4 0.00045554340000000007 0.2944 AML other m 2021-01-03T23:20:53.66
IV.MILZ.HHN. ML:2.4 0.00037694650000000003 0.3584 AML other m 2021-01-03T23:20:53.50
IV.IVPL.HHN. ML:2.4 0.0003364342 0.7936 AML other m 2021-01-03T23:20:56.68
IV.IVPL.HHE. ML:2.4 0.0003374197 0.4224 AML other m 2021-01-03T23:20:56.52
IV.RAFF.HHN. ML:2.2 0.00023150000000000002 0.56 AML other m 2021-01-03T23:20:56.53
IV.RAFF.HHE. ML:2.4 0.000354 0.48 AML other m 2021-01-03T23:20:56.64
IV.HMDC.HNE. ML:2.4 0.00033497569999999996 0.6784 AML other m 2021-01-03T23:20:57.91
IV.HAVL.HHE. ML:2.8 0.000823 0.22 AML other m 2021-01-03T23:20:57.99
IV.HMDC.HHN. ML:2.3 0.00023667594999999996 0.3712 AML other m 2021-01-03T23:20:57.98
IV.HMDC.HNN. ML:2.4 0.00030528529999999997 0.64 AML other m 2021-01-03T23:20:57.00
IV.HMDC.HHE. ML:2.4 0.00034750000000000004 1.2 AML other m 2021-01-03T23:20:58.83
IV.HAVL.HHN. ML:3.0 0.00115 1.24 AML other m 2021-01-03T23:20:58.98
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