Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 20-12-2021 and time 23:34:15 (UTC) in region Isole Eolie (Messina)

A magnitude ML 2.0 earthquake occured in region: Isole Eolie (Messina), on

  • 20-12-2021 23:34:15 (UTC)
  • 21-12-2021 00:34:15 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 38.5270, 14.6380 at 9 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
Leni ME 17 696 696
Malfa ME 18 982 1678

Municipalities with at least 50000 inhabitants

An earthquake occurred to
88 Km W of Messina (238439 inhabitants)
99 Km NW of Reggio di Calabria (183035 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 2.0 2021-12-20
23:34:15		 38.5272 14.6385 9 2022-03-30
13:04:41		 Bollettino Sismico Italiano INGV 102278701
Reviewed
Rev200 		ML 1.8 2021-12-20
23:34:14		 38.527 14.633 15 2022-03-23
08:14:49		 Sala Operativa INGV_OE (Catania) 98768981
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-20 23:34:15 ± 0.09
Latitude 38.5272 ± 0.0099
Longitude 14.6385 ± 0.0046
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 102278701

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1085
Semi-minor axis of confidence ellipse (meter) 185
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 13
Circular confidence region, given by single value of horizontal uncertainty (meter) 1080.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 153
Number of associated phases, regardless of their use for origin computation 30
Number of defining phases 30
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) 0.06205
Epicentral distance of station farthest from the epicenter (degree) 1.19250
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 21
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 102278701
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-03-23 08:14:18

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 98768981
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2021-12-20 23:42:57
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.HLNI.HHZ. 2021-12-20T23:34:37.60 0.3 undecidable manual P 171 132.3675 50 0.21 57
IV.MUCR.HHZ. 2021-12-20T23:34:34.01 0.6 undecidable manual S 159 57.498 50 0.44 42
IV.MSFR.HHZ. 2021-12-20T23:34:32.55 0.6 undecidable manual S 184 54.9006 50 -0.33 43
IV.MCPD.HHZ. 2021-12-20T23:34:30.27 0.6 undecidable manual S 170 45.9207 50 -0.2 45
IV.CSLB.HHZ. 2021-12-20T23:34:29.94 0.3 undecidable manual P 218 82.6506 50 0.2 63
IV.AIO.HHZ. 2021-12-20T23:34:29.43 0.3 undecidable manual P 140 80.5638 50 0.02 66
IV.GIB.HHE. 2021-12-20T23:34:29.74 0.3 undecidable manual P 222 79.9644 50 0.42 61
IV.MSRU.HHE. 2021-12-20T23:34:29.74 0.3 undecidable manual P 111 81.0522 50 0.25 63
IV.PLLN.EHN. 2021-12-20T23:34:28.37 0.6 undecidable manual P 216 73.371 50 0.07 44
IV.MPNC.HHZ. 2021-12-20T23:34:28.60 0.3 undecidable manual P 124 75.1692 50 0.03 66
IV.IVLT.HHN. 2021-12-20T23:34:26.72 0.3 undecidable manual S 118 30.5472 106 0.34 66
3D.OEM4.HHN. 2021-12-20T23:34:26.73 0.6 undecidable manual S 116 29.4483 107 0.73 38
IV.IVGP.HHZ. 2021-12-20T23:34:26.50 0.6 undecidable manual S 117 31.5462 50 -0.14 47
IV.MSFR.HHZ. 2021-12-20T23:34:25.22 0.3 undecidable manual P 184 54.9006 50 -0.23 66
IV.MUCR.HHZ. 2021-12-20T23:34:25.92 0.3 undecidable manual P 159 57.498 50 0.07 68
IV.IACL.HHZ. 2021-12-20T23:34:24.14 0.6 undecidable manual S 272 24.6531 110 -0.27 46
3D.OEM8.HHN. 2021-12-20T23:34:24.08 0.6 undecidable manual S 105 25.0527 110 -0.46 45
IV.MCPD.HHZ. 2021-12-20T23:34:23.62 0.1 undecidable manual P 170 45.9207 50 -0.45 85
IV.IVPL.HHZ. 2021-12-20T23:34:22.29 0.3 undecidable manual P 119 34.0437 50 0.04 72
IV.IVLT.HHN. 2021-12-20T23:34:21.63 0.1 undecidable manual P 118 30.5472 106 -0.07 96
3D.OEM4.HHN. 2021-12-20T23:34:21.58 0.1 undecidable manual P 116 29.4483 107 0.1 94
IV.IVGP.HHZ. 2021-12-20T23:34:21.55 0.3 undecidable manual P 117 31.5462 50 -0.31 68
IV.ILOS.HHZ. 2021-12-20T23:34:21.76 0.3 undecidable manual P 108 28.3494 108 0.48 65
IV.IVCR.HHZ. 2021-12-20T23:34:21.52 0.3 undecidable manual P 115 30.9468 50 -0.23 69
3D.OEM7.HHZ. 2021-12-20T23:34:21.18 0.3 undecidable manual P 100 29.2485 107 -0.27 68
IV.IVUG.HHZ. 2021-12-20T23:34:21.95 0.3 undecidable manual P 116 33.5442 50 -0.21 68
IV.IACL.HHZ. 2021-12-20T23:34:20.67 0.1 undecidable manual P 272 24.6531 110 0.11 95
3D.OEM8.HHN. 2021-12-20T23:34:20.53 0.1 undecidable manual P 105 25.0527 110 -0.11 95
IV.IFIL.HHZ. 2021-12-20T23:34:19.30 0.6 undecidable manual S 307 6.8931 143 0.05 49
IV.IFIL.HHZ. 2021-12-20T23:34:17.59 0.1 negative manual P 307 6.8931 143 0.01 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.IFIL.HHN. ML:2.5 0.00569 0.16 AML other m 2021-12-20T23:34:19.44
IV.IFIL.HHE. ML:2.8 0.011300000000000001 0.1 AML other m 2021-12-20T23:34:20.13
IV.IACL.HHN. ML:2.0 0.0005989999999999999 1.32 AML other m 2021-12-20T23:34:25.05
IV.IACL.HHE. ML:2.1 0.000731 0.56 AML other m 2021-12-20T23:34:26.68
IV.IVGP.HHN. ML:1.7 0.0002245 0.98 AML other m 2021-12-20T23:34:28.39
IV.IVGP.HHE. ML:1.7 0.000257 0.56 AML other m 2021-12-20T23:34:29.37
IV.MCPD.HHN. ML:1.7 0.000147 1.36 AML other m 2021-12-20T23:34:31.81
IV.MCPD.HHE. ML:1.6 0.00011225 1.44 AML other m 2021-12-20T23:34:31.14
IV.MUCR.HHE. ML:2.1 0.0002545 1.12 AML other m 2021-12-20T23:34:35.66
IV.MUCR.HHN. ML:2.3 0.0004465 0.38 AML other m 2021-12-20T23:34:36.02
IV.MPNC.HHE. ML:2.1 0.000176 0.42 AML other m 2021-12-20T23:34:41.47
IV.AIO.HHE. ML:1.7 0.0000752 1.04 AML other m 2021-12-20T23:34:42.83
IV.MPNC.HHN. ML:2.0 0.0001715 0.48 AML other m 2021-12-20T23:34:42.95
IV.AIO.HHN. ML:1.8 0.00008815 0.54 AML other m 2021-12-20T23:34:43.22
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