Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 20-01-2021 and time 09:22:59 (UTC) in region Costa Siciliana nord orientale (Messina)

A magnitude ML 2.1 earthquake occured in region: Costa Siciliana nord orientale (Messina), on

  • 20-01-2021 09:22:59 (UTC)
  • 20-01-2021 10:22:59 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 38.3870, 15.3870 at 112 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
Villafranca Tirrena ME 17 8584 8584
Spadafora ME 18 5021 13605
Venetico ME 19 3911 17516

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km NW of Messina (238439 inhabitants)
38 Km NW of Reggio di Calabria (183035 inhabitants)
88 Km N of Acireale (52622 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 2021-01-20
09:22:59		 38.3868 15.3873 112 2021-07-12
16:54:56		 Bollettino Sismico Italiano INGV 86740731
Reviewed
Rev100 		ML 2.1 2021-01-20
09:22:59		 38.3765 15.3913 112 2021-01-20
09:33:57		 Sala Sismica INGV-Roma 86396421
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-20 09:22:59 ± 0.18
Latitude 38.3868 ± 0.0162
Longitude 15.3873 ± 0.0126
Depth (km) 112 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 86740731

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1810
Semi-minor axis of confidence ellipse (meter) 918
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 163
Circular confidence region, given by single value of horizontal uncertainty (meter) 1810.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 95
Number of associated phases, regardless of their use for origin computation 26
Number of defining phases 26
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0.15558
Epicentral distance of station farthest from the epicenter (degree) 1.22308
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 16
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.1
Num. used stations 9
Type of magnitude ML
Reference to an origin 86396421
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-01-20 09:33:57

ML:2.1

Field Value
Value 2.1
Uncertainty 0.2
Num. used stations 11
Type of magnitude ML
Reference to an origin 86740731
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-05-30 07:36:08
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PLAC.HHZ. 2021-01-20T09:23:34.20 0.6 undecidable manual S 85 91.6416 137 0.45 54
IV.SOI.EHE. 2021-01-20T09:23:30.80 0.3 undecidable manual S 121 67.7766 146 0.25 90
IV.JOPP.HHZ. 2021-01-20T09:23:28.40 0.3 undecidable manual S 60 49.617 154 -0.2 94
IV.AIO.HHE. 2021-01-20T09:23:28.90 0.6 undecidable manual S 196 48.0186 155 0.46 60
MN.CEL.HHZ. 2021-01-20T09:23:28.50 0.3 undecidable manual S 108 46.3203 156 0.22 94
IV.IVUG.HHE. 2021-01-20T09:23:27.90 0.3 undecidable manual S 272 34.9428 161 0.52 89
IV.SICLA.EHE. 2021-01-20T09:23:27.00 0.3 undecidable manual S 117 31.9458 163 -0.18 97
IV.MILZ.HHZ. 2021-01-20T09:23:26.30 0.6 undecidable manual S 227 18.6702 170 -0.19 66
IV.MPNC.HHE. 2021-01-20T09:23:26.50 0.6 undecidable manual S 186 26.8509 165 -0.38 62
IV.MSRU.HHE. 2021-01-20T09:23:26.20 0.3 undecidable manual S 142 17.2716 170 -0.24 98
IV.CET2.HHZ. 2021-01-20T09:23:23.40 0.3 undecidable manual P 21 135.7641 125 0.12 80
IV.SELL.HHZ. 2021-01-20T09:23:22.56 0.3 undecidable manual P 58 126.1737 127 0.25 79
IV.PLAC.HHZ. 2021-01-20T09:23:19.09 0.3 undecidable manual P 85 91.6416 137 -0.03 90
IV.IFIL.HHN. 2021-01-20T09:23:17.68 0.6 undecidable manual P 286 73.1712 144 0.02 62
IV.SOI.EHE. 2021-01-20T09:23:17.04 0.3 undecidable manual P 121 67.7766 146 -0.23 90
IV.AIO.HHE. 2021-01-20T09:23:16.37 0.3 undecidable manual P 196 48.0186 155 0.32 92
IV.NOV.HHE. 2021-01-20T09:23:16.28 0.3 undecidable manual P 209 45.4212 156 0.36 91
IV.MUCR.HHZ. 2021-01-20T09:23:16.42 0.6 undecidable manual P 230 58.7967 150 -0.26 60
MN.CEL.HHZ. 2021-01-20T09:23:15.99 0.3 undecidable manual P 108 46.3203 156 0.03 98
IV.IVUG.HHE. 2021-01-20T09:23:15.39 0.3 undecidable manual P 272 34.9428 161 -0.05 99
IV.JOPP.HHZ. 2021-01-20T09:23:15.87 0.3 undecidable manual P 60 49.617 154 -0.27 93
IV.IVPL.HHZ. 2021-01-20T09:23:15.46 0.3 undecidable manual P 268 35.4423 161 0 100
IV.MPNC.HHE. 2021-01-20T09:23:15.37 0.3 undecidable manual P 186 26.8509 165 0.22 97
IV.MSRU.HHE. 2021-01-20T09:23:14.49 0.3 undecidable manual P 142 17.2716 170 -0.41 95
IV.SICLA.EHE. 2021-01-20T09:23:14.97 0.3 undecidable manual P 117 31.9458 163 -0.35 93
IV.MILZ.HHZ. 2021-01-20T09:23:14.69 0.3 undecidable manual P 227 18.6702 170 -0.24 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.JOPP.HHN. ML:0.0 0.00009075 0.54 AML other m 2021-01-20T09:23:29.80
IV.JOPP.HHE. ML:0.0 0.00010120000000000001 0.64 AML other m 2021-01-20T09:23:30.30
MN.CEL.HNN. ML:0.0 0.00010889538 0.624 AML other m 2021-01-20T09:23:30.51
MN.CEL.HHN. ML:0.0 0.00011035 0.62 AML other m 2021-01-20T09:23:30.20
MN.CEL.HHE. ML:0.0 0.00007539999999999999 0.8 AML other m 2021-01-20T09:23:30.54
MN.CEL.HNE. ML:0.0 0.000097527375 0.1824 AML other m 2021-01-20T09:23:30.55
IV.PLAC.HHN. ML:0.0 0.00007205 0.48 AML other m 2021-01-20T09:23:34.42
IV.PLAC.HHE. ML:0.0 0.0000619 0.6 AML other m 2021-01-20T09:23:35.08
IV.PLAC.HNE. ML:0.0 0.00007507422499999999 0.3584 AML other m 2021-01-20T09:23:35.24
IV.MILZ.HHN. ML:0.0 0.00004708945 0.2816 AML other m 2021-01-20T09:23:28.53
IV.MILZ.HHE. ML:0.0 0.00005127689 0.096 AML other m 2021-01-20T09:23:27.60
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