Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.3 on date 17-01-2021 and time 06:30:09 (UTC) in region 10 km W Milo (CT)

A magnitude ML 1.3 earthquake occured in region: 10 km W Milo (CT), on

  • 17-01-2021 06:30:09 (UTC)
  • 17-01-2021 07:30:09 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.7460, 15.0080 at 0 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
Milo CT 10 1087 1087
Zafferana Etnea CT 10 9517 10604
Sant'Alfio CT 12 1582 12186
Santa Venerina CT 13 8592 20778
Ragalna CT 14 3924 24702
Nicolosi CT 15 7463 32165
Pedara CT 15 14102 46267
Trecastagni CT 16 10910 57177
Maletto CT 16 3920 61097
Giarre CT 16 27659 88756
Randazzo CT 16 10900 99656
Bronte CT 16 19172 118828
Linguaglossa CT 16 5403 124231
Mascali CT 17 14282 138513
Piedimonte Etneo CT 17 3963 142476
Biancavilla CT 17 24007 166483
Viagrande CT 17 8563 175046
Belpasso CT 17 28108 203154
Riposto CT 17 14838 217992
Moio Alcantara ME 18 717 218709
Santa Maria di Licodia CT 18 7641 226350
Adrano CT 18 36122 262472
Castiglione di Sicilia CT 18 3215 265687
Fiumefreddo di Sicilia CT 19 9623 275310
Aci Bonaccorsi CT 19 3524 278834
Aci Sant'Antonio CT 19 17984 296818
San Pietro Clarenza CT 19 7743 304561
Santa Domenica Vittoria ME 19 980 305541
Mascalucia CT 20 31958 337499
Tremestieri Etneo CT 20 20589 358088
Camporotondo Etneo CT 20 5023 363111
Malvagna ME 20 733 363844
Aci Catena CT 20 29851 393695

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km NW of Acireale (52622 inhabitants)
28 Km N of Catania (314555 inhabitants)
69 Km SW of Reggio di Calabria (183035 inhabitants)
69 Km SW of Messina (238439 inhabitants)
80 Km NW of Siracusa (122291 inhabitants)
88 Km E of Caltanissetta (63360 inhabitants)
94 Km N of Ragusa (73313 inhabitants)
98 Km NE of Vittoria (63339 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 1.3 2021-01-17
06:30:09		 37.7458 15.008 0 2021-07-12
16:54:55		 Bollettino Sismico Italiano INGV 86353811
Reviewed
Rev200 		ML 1.5 2021-01-17
06:30:08		 37.754 15.002 1 2021-03-04
14:50:13		 Sala Operativa INGV_OE (Catania) 86322001
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-17 06:30:09 ± 0.1
Latitude 37.7458 ± 0.0054
Longitude 15.0080 ± 0.0080
Depth (km) 0 (operator assigned)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 86353811

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 770
Semi-minor axis of confidence ellipse (meter) 440
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 305
Circular confidence region, given by single value of horizontal uncertainty (meter) 770.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 136
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 19
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.34
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.28688
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 15
Magnitudes information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 86322001
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2021-01-17 06:50:02

ML:1.3

Field Value
Value 1.3
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 86353811
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-01-18 15:09:02
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.AIO.HHZ. 2021-01-17T06:30:15.90 0.3 undecidable manual P 38 31.8459 90 0.25 69
IV.EMSG.HHZ. 2021-01-17T06:30:13.38 0.3 undecidable manual S 328 9.7791 91 0.72 62
IV.ESCV.HHN. 2021-01-17T06:30:13.07 0.3 undecidable manual P 270 16.872 90 0.4 68
IV.ECBD.HHN. 2021-01-17T06:30:12.77 0.3 undecidable manual S 61 7.881 91 0.76 61
IV.ECTS.HHZ. 2021-01-17T06:30:12.84 0.3 undecidable manual P 33 18.0708 90 -0.06 73
IV.EPZF.HHZ. 2021-01-17T06:30:12.61 0.3 undecidable manual P 303 15.7731 90 0.16 72
IV.ECHR.HHE. 2021-01-17T06:30:11.65 0.3 undecidable manual P 232 10.6782 91 0.24 71
IV.EMSG.HHZ. 2021-01-17T06:30:11.02 0.1 undecidable manual P 328 9.7791 91 -0.21 96
IV.ECZM.HHN. 2021-01-17T06:30:11.38 0.3 undecidable manual P 260 9.2796 91 0.25 71
IV.EMCN.HNZ. 2021-01-17T06:30:11.16 0.1 undecidable manual S 24 5.4945 91 -0.03 100
IV.ESLN.HHZ. 2021-01-17T06:30:11.96 0.1 undecidable manual S 207 6.4935 91 0.42 92
IV.ESLN.HHZ. 2021-01-17T06:30:10.33 0.1 positive manual P 207 6.4935 91 -0.26 95
IV.EMPL.HHZ. 2021-01-17T06:30:10.69 0.3 undecidable manual P 204 8.0808 91 -0.22 72
IV.ECBD.HHN. 2021-01-17T06:30:10.75 0.1 undecidable manual P 61 7.881 91 -0.1 98
IV.EPIT.HHN. 2021-01-17T06:30:10.75 0.1 undecidable manual P 30 8.3805 91 -0.22 96
IV.EMCN.HNZ. 2021-01-17T06:30:10.00 0.1 positive manual P 24 5.4945 91 -0.38 93
IV.ESVO.HHE. 2021-01-17T06:30:09.92 0.1 undecidable manual P 299 6.1938 91 -0.59 87
IV.HAGA.HHZ. 2021-01-17T06:30:09.60 3.0 undecidable manual P 0
IV.ECPN.HHZ. 2021-01-17T06:30:09.41 0.3 undecidable manual P 263 1.8981 93 -0.25 72
IV.EMFS.HHE. 2021-01-17T06:30:09.72 0.1 undecidable manual P 197 3.0969 92 -0.17 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.EMCN.HNE. ML:3.0 0.0045113185 0.08 AML other m 2021-01-17T06:30:11.30
IV.EMCN.HHE. ML:3.1 0.004570039 0.0832 AML other m 2021-01-17T06:30:11.30
IV.EMCN.HHN. ML:3.0 0.004167016999999999 0.0992 AML other m 2021-01-17T06:30:12.32
IV.EMCN.HNN. ML:3.0 0.0040872239999999995 0.0992 AML other m 2021-01-17T06:30:12.32
IV.EMSG.HHE. ML:2.1 0.002078711 0.2624 AML other m 2021-01-17T06:30:16.06
IV.EMSG.HHN. ML:2.0 0.00196 1.7 AML other m 2021-01-17T06:30:17.06
IV.EPZF.HHE. ML:1.7 0.0005515 0.52 AML other m 2021-01-17T06:30:19.66
IV.EPZF.HHN. ML:1.7 0.000634 1.66 AML other m 2021-01-17T06:30:20.08
IV.HAGA.HHN. ML:1.5 0.00008171621000000002 1.1008 AML other m 2021-01-17T06:30:09.46
IV.HAGA.HHE. ML:1.7 0.000120431165 1.1584 AML other m 2021-01-17T06:30:20.77
IV.ESLN.HHN. ML:0.0 0.001593606 0.6208 AML other m 2021-01-17T06:30:15.92
IV.ESLN.HHE. ML:0.0 0.0019851305 0.5216 AML other m 2021-01-17T06:30:17.70
IV.ECTS.HHE. ML:1.0 0.00009945875500000001 0.2592 AML other m 2021-01-17T06:30:16.81
IV.ECTS.HHN. ML:1.2 0.00013459739999999997 0.64 AML other m 2021-01-17T06:30:22.44
IV.AIO.HHN. ML:0.9 0.00003808652999999999 0.5408 AML other m 2021-01-17T06:30:26.10
IV.AIO.HHE. ML:1.1 0.000053574349999999996 0.7616 AML other m 2021-01-17T06:30:25.90
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