Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.5 on date 21-12-2023 and time 20:48:31 (UTC) in region Costa Siciliana nord orientale (Messina)

A magnitude ML 1.5 earthquake occured in region: Costa Siciliana nord orientale (Messina), on

  • 21-12-2023 20:48:31 (UTC)
  • 21-12-2023 21:48:31 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 38.1440, 15.1250 at 8 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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
Terme Vigliatore ME 3 7395 7395
Furnari ME 4 3784 11179
Falcone ME 5 2808 13987
Rodì Milici ME 5 2056 16043
Mazzarrà Sant'Andrea ME 6 1531 17574
Oliveri ME 6 2181 19755
Barcellona Pozzo di Gotto ME 8 41583 61338
Castroreale ME 9 2504 63842
Basicò ME 11 612 64454
Tripi ME 11 873 65327
Merì ME 11 2338 67665
San Filippo del Mela ME 13 7115 74780
Milazzo ME 14 31646 106426
Santa Lucia del Mela ME 14 4650 111076
Patti ME 14 13431 124507
Novara di Sicilia ME 14 1337 125844
Librizzi ME 15 1660 127504
Montagnareale ME 16 1615 129119
Montalbano Elicona ME 16 2287 131406
Pace del Mela ME 16 6239 137645
Gualtieri Sicaminò ME 17 1807 139452
San Piero Patti ME 17 2915 142367
Fondachelli-Fantina ME 18 1019 143386
Condrò ME 18 493 143879

Municipalities with at least 50000 inhabitants

An earthquake occurred to
38 Km W of Messina (238439 inhabitants)
46 Km W of Reggio di Calabria (183035 inhabitants)
59 Km N of Acireale (52622 inhabitants)
71 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
Reviewed
Rev100 		ML 1.5 2023-12-21
20:48:31		 38.1443 15.1247 8 2023-12-21
20:55:48		 Sala Sismica INGV-Roma 124186201
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-12-21 20:48:31 ± 0.09
Latitude 38.1443 ± 0.0045
Longitude 15.1247 ± 0.0046
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 124186201

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 460
Semi-minor axis of confidence ellipse (meter) 237
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 2
Circular confidence region, given by single value of horizontal uncertainty (meter) 460.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 111
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.2
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.60165
Number of stations at which the event was observed 11
Number of stations from which data was used for origin computation 10
Magnitude information

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations 8
Type of magnitude ML
Reference to an origin 124186201
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-12-21 20:55:48
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.FIAM.HHZ. 2023-12-21T20:49:37.38 3.0 positive manual Pn -1.85 0
IV.IFIL.HHZ. 2023-12-21T20:48:43.29 0.6 undecidable manual P 314 66.7776 50 0.12 45
IV.MRCB.HHZ. 2023-12-21T20:48:40.28 0.6 negative manual P 88 50.5161 50 -0.38 44
IV.MUCR.HHZ. 2023-12-21T20:48:39.52 0.3 undecidable manual S 243 24.6531 107 -0.4 69
IV.MPNC.HHZ. 2023-12-21T20:48:38.22 0.6 undecidable manual S 89 19.869 111 -0.16 49
IV.AIO.HHZ. 2023-12-21T20:48:38.68 0.6 undecidable manual S 154 21.3675 109 -0.19 48
IV.LIBRI.HHZ. 2023-12-21T20:48:37.86 0.6 undecidable manual S 249 18.3705 112 -0.03 50
3D.OEM9.HNZ. 2023-12-21T20:48:37.36 0.6 undecidable manual P 337 29.4483 104 0.28 47
IV.IVUG.HHE. 2023-12-21T20:48:37.25 0.3 undecidable manual P 337 30.4473 104 -0.03 74
IV.IVGP.HHE. 2023-12-21T20:48:37.28 0.3 undecidable manual P 333 31.4463 103 -0.19 71
IV.ECTS.HHZ. 2023-12-21T20:48:37.38 0.3 undecidable manual P 181 29.1486 104 0.36 69
IV.MUCR.HHZ. 2023-12-21T20:48:36.24 0.1 positive manual P 243 24.6531 107 0.09 98
IV.MPNC.HHZ. 2023-12-21T20:48:35.35 0.1 undecidable manual P 89 19.869 111 0.09 99
IV.LIBRI.HHZ. 2023-12-21T20:48:35.17 0.3 positive manual P 249 18.3705 112 0.2 73
IV.AIO.HHZ. 2023-12-21T20:48:35.58 0.1 positive manual P 154 21.3675 109 0.03 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.LIBRI.HHE. ML:1.3 0.0001625 0.48 AML other m 2023-12-21T20:48:38.30
IV.LIBRI.HHN. ML:1.2 0.000132 0.26 AML other m 2023-12-21T20:48:38.56
IV.LIBRI.HNN. ML:1.6 0.00033150000000000003 1.34 AML other m 2023-12-21T20:48:38.10
IV.AIO.HHE. ML:1.6 0.00028500000000000004 0.84 AML other m 2023-12-21T20:48:38.84
IV.AIO.HHN. ML:1.8 0.0005380000000000001 0.16 AML other m 2023-12-21T20:48:38.95
IV.LIBRI.HNE. ML:1.6 0.000303 1.48 AML other m 2023-12-21T20:48:39.04
IV.MUCR.HHE. ML:1.4 0.000151 0.16 AML other m 2023-12-21T20:48:40.13
IV.MUCR.HHN. ML:1.6 0.00023050000000000002 0.36 AML other m 2023-12-21T20:48:40.80
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