Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.4 on date 09-12-2020 and time 18:37:34 (Italy) in region 12 km N Ragalna (CT)

A magnitude ML 2.4 earthquake occured in region: 12 km N Ragalna (CT), on

  • 09-12-2020 17:37:34 (UTC)
  • 09-12-2020 18:37:34 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.7310, 14.9790 at 10 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 12 3924 3924
Zafferana Etnea CT 12 9517 13441
Milo CT 12 1087 14528
Nicolosi CT 14 7463 21991
Biancavilla CT 14 24007 45998
Bronte CT 14 19172 65170
Pedara CT 14 14102 79272
Sant'Alfio CT 15 1582 80854
Maletto CT 15 3920 84774
Adrano CT 15 36122 120896
Santa Venerina CT 15 8592 129488
Santa Maria di Licodia CT 15 7641 137129
Trecastagni CT 15 10910 148039
Belpasso CT 15 28108 176147
Randazzo CT 17 10900 187047
Viagrande CT 17 8563 195610
San Pietro Clarenza CT 18 7743 203353
Giarre CT 18 27659 231012
Paternò CT 18 48228 279240
Camporotondo Etneo CT 18 5023 284263
Mascalucia CT 19 31958 316221
Aci Bonaccorsi CT 19 3524 319745
Aci Sant'Antonio CT 19 17984 337729
Tremestieri Etneo CT 19 20589 358318
Linguaglossa CT 19 5403 363721
Mascali CT 19 14282 378003
Piedimonte Etneo CT 20 3963 381966
San Giovanni la Punta CT 20 23060 405026
Moio Alcantara ME 20 717 405743
Riposto CT 20 14838 420581

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km NW of Acireale (52622 inhabitants)
27 Km NW of Catania (314555 inhabitants)
72 Km SW of Reggio di Calabria (183035 inhabitants)
72 Km SW of Messina (238439 inhabitants)
80 Km NW of Siracusa (122291 inhabitants)
85 Km E of Caltanissetta (63360 inhabitants)
92 Km N of Ragusa (73313 inhabitants)
95 Km NE of Vittoria (63339 inhabitants)
98 Km NE of Gela (75827 inhabitants)
99 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 2020-12-09
17:37:34		 37.7308 14.9788 10 2021-02-26
14:56:19		 Bollettino Sismico Italiano INGV 87263091
Reviewed
Rev200 		ML 1.9 2020-12-09
17:37:34		 37.737 14.968 5 2021-02-18
01:52:33		 Sala Operativa INGV_OE (Catania) 85321181
Reviewed
Rev200 		ML 2.0 2020-12-09
17:37:34		 37.738 14.968 5 2021-02-18
01:52:12		 Sala Operativa INGV_OE (Catania) 85320941
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-12-09 17:37:34 ± 0.08
Latitude 37.7308 ± 0.0045
Longitude 14.9788 ± 0.0068
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 87263091

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 560
Semi-minor axis of confidence ellipse (meter) 461
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 80
Circular confidence region, given by single value of horizontal uncertainty (meter) 560.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 52
Number of associated phases, regardless of their use for origin computation 27
Number of defining phases 27
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0.01439
Epicentral distance of station farthest from the epicenter (degree) 0.77881
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 19
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.1
Num. used stations
Type of magnitude ML
Reference to an origin 85320941
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2020-12-09 17:49:54

ML:2.4

Field Value
Value 2.4
Uncertainty 0.2
Num. used stations 36
Type of magnitude ML
Reference to an origin 87263091
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-02-18 01:51:27

ML:1.9

Field Value
Value 1.9
Uncertainty 0.1
Num. used stations
Type of magnitude ML
Reference to an origin 85321181
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2020-12-09 17:58:39
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.HAVL.HHZ. 2020-12-09T17:37:49.44 0.3 undecidable manual P 172 86.4468 50 -0.3 62
IV.SSY.HHZ. 2020-12-09T17:37:46.92 0.3 undecidable manual P 172 64.0914 50 0.63 58
IV.MPNC.HHZ. 2020-12-09T17:37:45.81 0.6 undecidable manual P 35 56.499 50 0.69 39
IV.HAGA.HHZ. 2020-12-09T17:37:44.05 0.3 undecidable manual P 163 51.8037 50 -0.35 65
IV.HLNI.HHZ. 2020-12-09T17:37:42.80 0.3 undecidable manual P 193 43.4232 50 -0.3 67
IV.GALF.HHZ. 2020-12-09T17:37:42.40 0.3 undecidable manual P 267 36.2415 50 0.4 66
IV.MUCR.HHZ. 2020-12-09T17:37:41.84 0.3 undecidable manual P 345 35.8419 50 -0.09 71
IV.EPZF.HHZ. 2020-12-09T17:37:41.13 0.6 undecidable manual S 314 14.874 122 0.23 47
IV.EVRN.HHZ. 2020-12-09T17:37:40.71 0.6 undecidable manual S 108 14.4744 123 -0.07 49
IV.EMCN.HHZ. 2020-12-09T17:37:39.09 0.6 undecidable manual S 36 8.2806 139 -0.04 50
IV.ECHR.HHE. 2020-12-09T17:37:39.31 0.6 undecidable manual S 230 7.5813 141 0.32 47
IV.EMSG.HHZ. 2020-12-09T17:37:39.82 0.6 undecidable manual S 346 10.2786 132 0.19 48
IV.EPOZ.HHZ. 2020-12-09T17:37:39.45 0.3 undecidable manual P 109 19.5693 116 0.32 69
IV.EPIT.HHN. 2020-12-09T17:37:39.39 0.6 undecidable manual S 37 11.2776 130 -0.48 45
IV.ESML.HHZ. 2020-12-09T17:37:38.41 0.3 undecidable manual P 215 15.2736 122 0.04 74
IV.EVRN.HHZ. 2020-12-09T17:37:38.06 0.6 undecidable manual P 108 14.4744 123 -0.19 48
IV.ENIC.HHZ. 2020-12-09T17:37:38.13 0.6 undecidable manual P 161 11.6772 129 0.34 47
IV.ECPN.HHZ. 2020-12-09T17:37:38.66 0.6 undecidable manual S 25 1.5984 170 0.56 45
IV.ESLN.HHZ. 2020-12-09T17:37:38.45 0.6 undecidable manual S 185 4.1958 156 0.09 50
IV.EPIT.HHN. 2020-12-09T17:37:37.81 0.1 undecidable manual P 37 11.2776 130 0.09 98
IV.EMCN.HHZ. 2020-12-09T17:37:37.26 0.1 undecidable manual P 36 8.2806 139 -0.03 100
IV.EMSG.HHZ. 2020-12-09T17:37:37.52 0.1 positive manual P 346 10.2786 132 -0.06 99
IV.ECBD.HHN. 2020-12-09T17:37:37.60 0.1 undecidable manual P 60 10.878 131 -0.07 99
IV.EPZF.HHZ. 2020-12-09T17:37:37.86 0.1 undecidable manual P 314 14.874 122 -0.45 90
IV.ESLN.HHZ. 2020-12-09T17:37:36.58 0.1 undecidable manual P 185 4.1958 156 -0.27 96
IV.ECHR.HHE. 2020-12-09T17:37:36.88 0.1 undecidable manual P 230 7.5813 141 -0.33 94
IV.ECPN.HHZ. 2020-12-09T17:37:36.84 0.3 undecidable manual P 25 1.5984 170 0.14 74
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ESLN.HHN. ML:2.6 0.0071449999999999994 1.02 AML other m 2020-12-09T17:37:38.14
IV.ESLN.HHE. ML:2.6 0.006875 0.24 AML other m 2020-12-09T17:37:39.35
IV.EMCN.HNN. ML:2.5 0.0046099999999999995 0.16 AML other m 2020-12-09T17:37:39.82
IV.EMCN.HHN. ML:2.5 0.004445 0.16 AML other m 2020-12-09T17:37:39.82
IV.EMSG.HHE. ML:2.6 0.00484 0.58 AML other m 2020-12-09T17:37:41.10
IV.EVRN.HNN. ML:2.6 0.003665 0.36 AML other m 2020-12-09T17:37:42.94
IV.EVRN.HHN. ML:2.6 0.003685 0.38 AML other m 2020-12-09T17:37:42.95
IV.ESML.HHE. ML:2.4 0.0024699999999999995 1.7 AML other m 2020-12-09T17:37:42.95
IV.EPZF.HHN. ML:2.6 0.0035 0.3 AML other m 2020-12-09T17:37:43.04
IV.EVRN.HNE. ML:2.4 0.0024449999999999997 0.44 AML other m 2020-12-09T17:37:43.00
IV.EVRN.HHE. ML:2.6 0.0035800000000000003 0.44 AML other m 2020-12-09T17:37:43.01
IV.ENIC.HHE. ML:2.5 0.0034000000000000002 0.22 AML other m 2020-12-09T17:37:43.64
IV.ENIC.HNE. ML:2.6 0.004405 0.22 AML other m 2020-12-09T17:37:43.65
IV.EMSG.HHN. ML:2.5 0.00428 0.16 AML other m 2020-12-09T17:37:44.33
IV.ENIC.HHN. ML:2.4 0.0033200000000000005 0.2 AML other m 2020-12-09T17:37:44.70
IV.ENIC.HNN. ML:2.5 0.00401 0.68 AML other m 2020-12-09T17:37:44.61
IV.EMCN.HNE. ML:2.4 0.003705 0.34 AML other m 2020-12-09T17:37:45.17
IV.EMCN.HHE. ML:2.4 0.00378 0.34 AML other m 2020-12-09T17:37:45.17
IV.EPOZ.HHN. ML:2.4 0.001935 0.34 AML other m 2020-12-09T17:37:45.47
IV.EPZF.HHE. ML:2.4 0.0025499999999999997 0.38 AML other m 2020-12-09T17:37:45.69
IV.EPOZ.HHE. ML:2.2 0.001245 0.94 AML other m 2020-12-09T17:37:46.66
IV.ESML.HHN. ML:2.4 0.0023 1.16 AML other m 2020-12-09T17:37:46.79
IV.MUCR.HHN. ML:1.9 0.0002875 0.4 AML other m 2020-12-09T17:37:52.54
IV.MUCR.HHE. ML:2.1 0.000479 0.44 AML other m 2020-12-09T17:37:52.77
IV.HLNI.HHE. ML:1.8 0.00019800000000000002 0.78 AML other m 2020-12-09T17:37:53.60
IV.GALF.HNN. ML:1.8 0.000235 0.52 AML other m 2020-12-09T17:37:53.57
IV.GALF.HHE. ML:2.6 0.0014750000000000002 0.96 AML other m 2020-12-09T17:37:53.84
IV.GALF.HNE. ML:1.8 0.000224 1.04 AML other m 2020-12-09T17:37:53.90
IV.HLNI.HHN. ML:1.9 0.000236 1.18 AML other m 2020-12-09T17:37:54.74
IV.GALF.HHN. ML:2.6 0.00163 1.18 AML other m 2020-12-09T17:37:56.13
IV.MPNC.HHE. ML:2.2 0.0003765 0.52 AML other m 2020-12-09T17:38:08.10
IV.MPNC.HHN. ML:2.1 0.000308 1 AML other m 2020-12-09T17:38:08.00
IV.SSY.HHE. ML:2.8 0.0012349999999999998 0.76 AML other m 2020-12-09T17:38:09.60
IV.SSY.HHN. ML:3.0 0.00197 1.74 AML other m 2020-12-09T17:38:11.06
IV.HAVL.HHE. ML:2.7 0.0006265000000000001 1.46 AML other m 2020-12-09T17:38:15.25
IV.HAVL.HHN. ML:2.6 0.0005409999999999999 0.18 AML other m 2020-12-09T17:38:16.68
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