Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 20-01-2020 and time 00:12:38 (Italy) in region 1 km N Riposto (CT)

A magnitude ML 1.7 earthquake occured in region: 1 km N Riposto (CT), on

  • 19-01-2020 23:12:38 (UTC)
  • 20-01-2020 00:12:38 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.7440, 15.2040 at 32 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
Riposto CT 1 14838 14838
Mascali CT 2 14282 29120
Giarre CT 2 27659 56779
Sant'Alfio CT 5 1582 58361
Fiumefreddo di Sicilia CT 6 9623 67984
Piedimonte Etneo CT 8 3963 71947
Milo CT 8 1087 73034
Santa Venerina CT 8 8592 81626
Calatabiano CT 9 5308 86934
Zafferana Etnea CT 10 9517 96451
Linguaglossa CT 12 5403 101854
Giardini-Naxos ME 13 9415 111269
Gaggi ME 13 3184 114453
Taormina ME 14 10960 125413
Castelmola ME 14 1088 126501
Acireale CT 15 52622 179123
Aci Catena CT 17 29851 208974
Aci Sant'Antonio CT 17 17984 226958
Graniti ME 17 1492 228450
Castiglione di Sicilia CT 17 3215 231665
Motta Camastra ME 17 845 232510
Viagrande CT 17 8563 241073
Trecastagni CT 18 10910 251983
Letojanni ME 18 2861 254844
Aci Bonaccorsi CT 18 3524 258368
Francavilla di Sicilia ME 19 3945 262313
Pedara CT 19 14102 276415
Mongiuffi Melia ME 19 600 277015
Valverde CT 19 7840 284855
Gallodoro ME 19 367 285222

Municipalities with at least 50000 inhabitants

An earthquake occurred to
15 Km N of Acireale (52622 inhabitants)
29 Km NE of Catania (314555 inhabitants)
56 Km SW of Reggio di Calabria (183035 inhabitants)
59 Km SW of Messina (238439 inhabitants)
76 Km N of Siracusa (122291 inhabitants)
100 Km NE 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 1.7 2020-01-19
23:12:38		 37.7437 15.2037 32 2020-07-18
21:08:31		 Bollettino Sismico Italiano INGV 78037001
Reviewed
Rev100 		ML 1.6 2020-01-19
23:12:39		 37.7222 15.2548 9 2020-01-19
23:32:59		 Sala Sismica INGV-Roma 75665161
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-01-19 23:12:38 ± 0.14
Latitude 37.7437 ± 0.0054
Longitude 15.2037 ± 0.0114
Depth (km) 32 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 78037001

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 755
Semi-minor axis of confidence ellipse (meter) 681
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 283
Circular confidence region, given by single value of horizontal uncertainty (meter) 760.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 139
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) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.07285
Epicentral distance of station farthest from the epicenter (degree) 1.04321
Number of stations at which the event was observed 18
Number of stations from which data was used for origin computation 18
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 9
Type of magnitude ML
Reference to an origin 78037001
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-04-21 19:41:14

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 17
Type of magnitude ML
Reference to an origin 75665161
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-01-19 23:32:59
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.HPAC.HHZ. 2020-01-19T23:12:58.08 0.6 undecidable manual P 187 115.7952 54 0.28 42
IV.HLNI.HHZ. 2020-01-19T23:12:56.02 0.3 undecidable manual S 214 52.6029 116 -0.51 67
IV.HAGA.HHZ. 2020-01-19T23:12:55.98 0.3 undecidable manual S 185 51.0156 117 -0.18 73
IV.MPNC.HHZ. 2020-01-19T23:12:54.50 0.3 undecidable manual S 16 46.5201 120 -0.6 67
IV.MUCR.HHE. 2020-01-19T23:12:54.69 0.6 undecidable manual S 319 44.0226 121 0.17 50
MN.CEL.HHZ. 2020-01-19T23:12:53.86 0.3 undecidable manual P 46 83.25 106 0.47 64
IV.EPZF.HHZ. 2020-01-19T23:12:52.01 0.6 undecidable manual S 286 31.6461 131 0.15 52
IV.IVPL.HHZ. 2020-01-19T23:12:52.01 0.6 undecidable manual P 345 72.8715 109 0.15 47
IV.GALF.HHZ. 2020-01-19T23:12:50.43 0.1 undecidable manual P 266 55.9995 115 0.98 76
IV.SSY.HHZ. 2020-01-19T23:12:50.87 0.3 undecidable manual P 190 65.9895 111 0 74
IV.AIO.HHZ. 2020-01-19T23:12:50.18 0.3 undecidable manual S 6 25.3524 138 -0.48 72
IV.MSRU.HHE. 2020-01-19T23:12:50.85 0.6 undecidable manual P 25 63.5919 112 0.33 46
IV.ENIC.HHE. 2020-01-19T23:12:49.67 0.6 undecidable manual S 232 20.2686 145 -0.14 52
IV.HLNI.HHZ. 2020-01-19T23:12:48.78 0.3 undecidable manual P 214 52.6029 116 -0.2 72
IV.MPNC.HHZ. 2020-01-19T23:12:48.00 0.3 undecidable manual P 16 46.5201 120 -0.16 74
IT.LNT.HGZ. 2020-01-19T23:12:48.94 0.6 undecidable manual P 199 53.502 116 -0.17 49
IV.HAGA.HHZ. 2020-01-19T23:12:48.63 0.3 undecidable manual P 185 51.0156 117 -0.13 74
IV.EPOZ.HHZ. 2020-01-19T23:12:48.98 0.6 undecidable manual S 190 8.0808 165 0.58 48
IV.EVRN.HNN. 2020-01-19T23:12:48.45 0.6 undecidable manual S 225 8.4804 164 0.02 54
IV.MUCR.HHE. 2020-01-19T23:12:47.79 0.3 undecidable manual P 319 44.0226 121 -0.03 76
IV.EPZF.HHZ. 2020-01-19T23:12:45.84 0.6 undecidable manual P 286 31.6461 131 -0.44 47
IV.ENIC.HHE. 2020-01-19T23:12:45.39 0.6 undecidable manual P 232 20.2686 145 0.29 51
IV.EPIT.HHN. 2020-01-19T23:12:45.30 0.6 undecidable manual P 300 14.874 153 0.62 47
IV.EMSG.HHN. 2020-01-19T23:12:45.48 1.0 undecidable manual P 291 23.8539 140 0.04 27
IV.AIO.HHZ. 2020-01-19T23:12:45.31 0.1 undecidable manual P 6 25.3524 138 -0.28 100
IV.EPOZ.HHZ. 2020-01-19T23:12:44.26 0.3 undecidable manual P 190 8.0808 165 -0.03 81
IV.EVRN.HNN. 2020-01-19T23:12:44.16 0.6 undecidable manual P 225 8.4804 164 -0.15 53
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.AIO.HHN. ML:1.6 0.0001566416 0.2304 AML other m 2020-01-19T23:12:51.80
IV.AIO.HHE. ML:1.5 0.00011580375 0.2176 AML other m 2020-01-19T23:12:51.85
IV.EPZF.HHN. ML:2.3 0.0006206234000000001 0.32 AML other m 2020-01-19T23:12:53.93
IV.HLNI.HHN. ML:1.7 0.00010654861 0.0768 AML other m 2020-01-19T23:12:56.57
IV.HAGA.HHN. ML:1.7 0.00011736087000000001 0.0768 AML other m 2020-01-19T23:12:56.93
IV.MPNC.HHN. ML:1.8 0.00013386770000000002 0.384 AML other m 2020-01-19T23:12:57.72
IV.HLNI.HHE. ML:1.8 0.00011574816500000001 0.0768 AML other m 2020-01-19T23:12:57.67
IV.HAGA.HHE. ML:1.7 0.00009802289 0.1792 AML other m 2020-01-19T23:12:58.34
IV.MPNC.HHE. ML:1.8 0.0001418694 0.5376 AML other m 2020-01-19T23:12:59.05
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