Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 11-01-2021 and time 06:51:20 (Italy) in region 7 km NW Milo (CT)

A magnitude ML 2.1 earthquake occured in region: 7 km NW Milo (CT), on

  • 11-01-2021 05:51:20 (UTC)
  • 11-01-2021 06:51:20 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.7550, 15.0420 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
Milo CT 7 1087 1087
Zafferana Etnea CT 9 9517 10604
Sant'Alfio CT 9 1582 12186
Santa Venerina CT 11 8592 20778
Giarre CT 13 27659 48437
Linguaglossa CT 13 5403 53840
Piedimonte Etneo CT 13 3963 57803
Mascali CT 14 14282 72085
Riposto CT 15 14838 86923
Pedara CT 15 14102 101025
Fiumefreddo di Sicilia CT 15 9623 110648
Trecastagni CT 16 10910 121558
Nicolosi CT 16 7463 129021
Castiglione di Sicilia CT 16 3215 132236
Moio Alcantara ME 16 717 132953
Randazzo CT 16 10900 143853
Ragalna CT 17 3924 147777
Viagrande CT 17 8563 156340
Maletto CT 18 3920 160260
Calatabiano CT 18 5308 165568
Aci Sant'Antonio CT 18 17984 183552
Francavilla di Sicilia ME 18 3945 187497
Malvagna ME 18 733 188230
Aci Bonaccorsi CT 18 3524 191754
Bronte CT 19 19172 210926
Aci Catena CT 19 29851 240777
Belpasso CT 19 28108 268885
Acireale CT 19 52622 321507
Santa Domenica Vittoria ME 19 980 322487
Motta Camastra ME 20 845 323332
Gaggi ME 20 3184 326516
Biancavilla CT 20 24007 350523
Tremestieri Etneo CT 20 20589 371112
Roccella Valdemone ME 20 666 371778

Municipalities with at least 50000 inhabitants

An earthquake occurred to
19 Km NW of Acireale (52622 inhabitants)
28 Km N of Catania (314555 inhabitants)
66 Km SW of Reggio di Calabria (183035 inhabitants)
67 Km SW of Messina (238439 inhabitants)
80 Km N of Siracusa (122291 inhabitants)
91 Km E of Caltanissetta (63360 inhabitants)
96 Km N of Ragusa (73313 inhabitants)
100 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 2.1 2021-01-11
05:51:20		 37.7553 15.0423 10 2021-07-12
16:54:55		 Bollettino Sismico Italiano INGV 86204411
Reviewed
Rev200 		ML 1.8 2021-01-11
05:51:19		 37.741 15.035 6 2021-03-02
14:31:36		 Sala Operativa INGV_OE (Catania) 86164451
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-11 05:51:20 ± 0.15
Latitude 37.7553 ± 0.0054
Longitude 15.0423 ± 0.0080
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 86204411

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 634
Semi-minor axis of confidence ellipse (meter) 380
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 273
Circular confidence region, given by single value of horizontal uncertainty (meter) 630.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 59
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 17
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) 0.04317
Epicentral distance of station farthest from the epicenter (degree) 0.31656
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations
Type of magnitude ML
Reference to an origin 86164451
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2021-01-11 05:57:55

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 12
Type of magnitude ML
Reference to an origin 86204411
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-03-02 14:57:59
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MUCR.HHZ. 2021-01-11T05:51:27.31 0.3 undecidable manual P 335 35.1426 50 0.17 69
IV.ENIC.HHZ. 2021-01-11T05:51:26.04 0.3 undecidable manual S 188 13.875 127 -0.19 71
IV.ECTS.HHZ. 2021-01-11T05:51:26.42 0.6 undecidable manual S 26 15.6732 124 -0.32 46
IV.EMSG.HHZ. 2021-01-11T05:51:25.79 0.6 undecidable manual S 312 10.878 134 0.34 46
IV.ECBD.HHN. 2021-01-11T05:51:24.46 0.6 undecidable manual S 54 4.7952 155 0.27 48
IV.ENIC.HHZ. 2021-01-11T05:51:24.14 0.3 undecidable manual P 188 13.875 127 0.45 68
IV.EPIT.HHN. 2021-01-11T05:51:24.71 0.6 undecidable manual S 11 6.3936 149 0.26 48
IV.EPZF.HHZ. 2021-01-11T05:51:24.30 0.3 undecidable manual P 295 17.9709 120 -0.08 73
IV.EPOZ.HHZ. 2021-01-11T05:51:24.60 0.3 undecidable manual P 126 15.7731 123 0.59 64
IV.ECHR.HHE. 2021-01-11T05:51:23.64 0.3 undecidable manual P 236 13.6752 127 -0.03 74
IV.EMSG.HHZ. 2021-01-11T05:51:23.21 0.1 undecidable manual P 312 10.878 134 -0.03 99
IV.EFIU.HHE. 2021-01-11T05:51:23.65 0.6 undecidable manual P 75 15.1737 124 -0.26 47
IV.ECTS.HHZ. 2021-01-11T05:51:23.69 0.3 undecidable manual P 26 15.6732 124 -0.3 70
IV.EVRN.HHZ. 2021-01-11T05:51:23.07 0.1 undecidable manual P 132 10.9779 133 -0.18 96
IV.EPIT.HHN. 2021-01-11T05:51:22.71 0.3 undecidable manual P 11 6.3936 149 0.05 75
IV.ESLN.HHZ. 2021-01-11T05:51:22.51 0.3 undecidable manual P 221 9.0798 139 -0.48 68
IV.ECBD.HHN. 2021-01-11T05:51:22.48 0.1 undecidable manual P 54 4.7952 155 -0.03 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.EMSG.HHN. ML:2.2 0.0019499999999999997 0.92 AML other m 2021-01-11T05:51:26.60
IV.ENIC.HHE. ML:2.2 0.00173 0.9 AML other m 2021-01-11T05:51:26.28
IV.ECTS.HHN. ML:1.7 0.00046499999999999997 0.9 AML other m 2021-01-11T05:51:27.67
IV.EVRN.HNE. ML:2.2 0.0016799999999999999 1.22 AML other m 2021-01-11T05:51:27.12
IV.EVRN.HHN. ML:2.2 0.001865 1.4 AML other m 2021-01-11T05:51:29.26
IV.EVRN.HNN. ML:2.2 0.0017999999999999997 1.36 AML other m 2021-01-11T05:51:29.27
IV.ECTS.HHE. ML:1.6 0.00035999999999999997 0.68 AML other m 2021-01-11T05:51:29.37
IV.EMSG.HHE. ML:2.3 0.00215 0.24 AML other m 2021-01-11T05:51:29.48
IV.EVRN.HHE. ML:2.2 0.00187 0.42 AML other m 2021-01-11T05:51:30.57
IV.ENIC.HHN. ML:2.2 0.0014299999999999998 0.62 AML other m 2021-01-11T05:51:30.88
IV.MUCR.HHE. ML:1.4 0.0001056 0.44 AML other m 2021-01-11T05:51:36.13
IV.MUCR.HHN. ML:1.5 0.000124 0.66 AML other m 2021-01-11T05:51:42.14
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