Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 17-12-2021 and time 04:39:14 (Italy) in region Costa Siciliana nord orientale (Messina)

A magnitude ML 1.7 earthquake occured in region: Costa Siciliana nord orientale (Messina), on

  • 17-12-2021 03:39:14 (UTC)
  • 17-12-2021 04:39:14 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 38.3130, 15.1920 at 118 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
Milazzo ME 11 31646 31646
Merì ME 17 2338 33984
San Filippo del Mela ME 17 7115 41099
Pace del Mela ME 18 6239 47338
Venetico ME 18 3911 51249
Barcellona Pozzo di Gotto ME 19 41583 92832
Spadafora ME 19 5021 97853
Condrò ME 19 493 98346
Torregrotta ME 19 7431 105777
Terme Vigliatore ME 20 7395 113172
Gualtieri Sicaminò ME 20 1807 114979

Municipalities with at least 50000 inhabitants

An earthquake occurred to
34 Km W of Messina (238439 inhabitants)
46 Km NW of Reggio di Calabria (183035 inhabitants)
78 Km N of Acireale (52622 inhabitants)
90 Km N of Catania (314555 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 2021-12-17
03:39:14		 38.3128 15.1918 118 2022-03-30
13:04:29		 Bollettino Sismico Italiano INGV 99688011
Reviewed
Rev100 		ML 1.8 2021-12-17
03:39:13		 38.3723 15.1917 119 2021-12-17
03:58:18		 Sala Sismica INGV-Roma 98609281
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-12-17 03:39:14 ± 0.27
Latitude 38.3128 ± 0.0180
Longitude 15.1918 ± 0.0218
Depth (km) 118 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 99688011

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2057
Semi-minor axis of confidence ellipse (meter) 1443
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 148
Circular confidence region, given by single value of horizontal uncertainty (meter) 2060.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 83
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) 0.18166
Epicentral distance of station farthest from the epicenter (degree) 1.51626
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 11
Type of magnitude ML
Reference to an origin 99688011
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-03-14 17:12:14

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 10
Type of magnitude ML
Reference to an origin 98609281
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-12-17 03:58:18
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CAR1.HHN. 2021-12-17T03:39:56.74 0.6 undecidable manual S 40 136.5633 127 -0.18 40
IV.PLAC.HHE. 2021-12-17T03:39:52.47 0.6 undecidable manual S 82 109.4127 133 0.05 44
IV.MPAZ.HHZ. 2021-12-17T03:39:48.23 0.6 undecidable manual S 119 81.5517 142 -0.13 45
IV.JOPP.HHZ. 2021-12-17T03:39:46.26 0.6 undecidable manual S 61 68.4759 147 -0.48 43
TV.GMB1.HHE. 2021-12-17T03:39:46.21 0.6 undecidable manual S 106 56.6988 152 0.76 40
IV.MTTG.HHE. 2021-12-17T03:39:45.97 0.6 undecidable manual S 128 56.0994 152 0.58 42
IV.AIO.HHZ. 2021-12-17T03:39:44.63 0.6 undecidable manual S 175 38.0286 160 0.81 40
IV.MPNC.HHZ. 2021-12-17T03:39:43.19 0.6 undecidable manual S 143 23.1546 168 0.24 49
MN.TIP.HHN. 2021-12-17T03:39:42.28 0.3 undecidable manual P 54 166.1115 121 0.32 53
IV.GRIS.HNE. 2021-12-17T03:39:42.48 0.3 undecidable manual P 20 168.3093 120 0.29 52
IV.MSRU.HHZ. 2021-12-17T03:39:42.43 0.6 undecidable manual S 101 28.0497 165 -0.76 42
IV.CELI.HHE. 2021-12-17T03:39:42.48 0.3 undecidable manual P 43 166.0116 121 0.53 50
IV.CET2.HHZ. 2021-12-17T03:39:40.56 0.3 undecidable manual P 26 150.1386 124 0.29 57
IV.CAR1.HHN. 2021-12-17T03:39:38.97 0.3 undecidable manual P 40 136.5633 127 0.07 62
IV.PLAC.HHE. 2021-12-17T03:39:36.23 0.1 undecidable manual P 82 109.4127 133 -0.07 87
IV.FERC.HHE.00 2021-12-17T03:39:34.41 0.6 undecidable manual P 79 82.8504 142 0.35 43
IY.OPPI.HHE. 2021-12-17T03:39:33.42 0.3 undecidable manual P 94 71.373 146 0.2 68
IV.MPAZ.HHZ. 2021-12-17T03:39:33.69 0.1 undecidable manual P 119 81.5517 142 -0.27 88
IV.JOPP.HHZ. 2021-12-17T03:39:32.65 0.1 negative manual P 61 68.4759 147 -0.37 88
TV.GMB1.HHE. 2021-12-17T03:39:32.24 0.3 undecidable manual P 106 56.6988 152 -0.04 73
IV.MTTG.HHE. 2021-12-17T03:39:32.17 0.1 positive manual P 128 56.0994 152 -0.07 96
IV.AIO.HHZ. 2021-12-17T03:39:31.38 0.1 negative manual P 175 38.0286 160 0.04 100
IV.ECTS.HHZ. 2021-12-17T03:39:31.91 0.1 undecidable manual P 187 48.2184 156 0.1 97
IV.MUCR.HHE. 2021-12-17T03:39:31.78 0.3 undecidable manual P 223 40.8258 159 0.32 70
IV.MPNC.HHZ. 2021-12-17T03:39:30.42 0.1 undecidable manual P 143 23.1546 168 -0.41 95
IV.IVUG.HHE. 2021-12-17T03:39:30.60 0.6 undecidable manual P 297 20.1687 169 -0.16 51
IV.MSRU.HHZ. 2021-12-17T03:39:30.26 0.1 negative manual P 101 28.0497 165 -0.71 85
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MPNC.HHE. ML:1.8 0.000045664530000000005 0.9392 AML other m 2021-12-17T03:39:43.34
IV.MSRU.HHE. ML:1.9 0.00005669163500000001 0.3408 AML other m 2021-12-17T03:39:43.39
IV.MSRU.HHN. ML:1.8 0.00005180354 0.6016 AML other m 2021-12-17T03:39:43.02
IV.MPNC.HHN. ML:1.6 0.000029895444999999998 0.9008 AML other m 2021-12-17T03:39:43.91
IV.AIO.HHN. ML:1.3 0.000015734365 1.96 AML other m 2021-12-17T03:39:46.19
IV.JOPP.HHN. ML:1.9 0.00004272104 0.1616 AML other m 2021-12-17T03:39:46.61
IV.JOPP.HNN. ML:2.0 0.000057655035 0.4992 AML other m 2021-12-17T03:39:46.62
IV.JOPP.HNE. ML:1.7 0.000029386335 0.2192 AML other m 2021-12-17T03:39:46.73
IV.JOPP.HHE. ML:1.8 0.00004237228 0.84 AML other m 2021-12-17T03:39:47.09
IV.AIO.HHE. ML:1.3 0.000014756934999999998 0.24 AML other m 2021-12-17T03:39:47.21
IV.MPAZ.HHN. ML:1.6 0.00002048508 0.3008 AML other m 2021-12-17T03:39:48.80
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