Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 18-12-2023 and time 11:33:30 (UTC) in region Costa Calabra sud orientale (Reggio di Calabria)

A magnitude ML 1.6 earthquake occured in region: Costa Calabra sud orientale (Reggio di Calabria), on

  • 18-12-2023 11:33:30 (UTC)
  • 18-12-2023 12:33:30 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 38.0270, 16.3520 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
Bianco RC 19 4273 4273
Africo RC 20 3075 7348

Municipalities with at least 50000 inhabitants

An earthquake occurred to
63 Km E of Reggio di Calabria (183035 inhabitants)
72 Km E of Messina (238439 inhabitants)
100 Km S of Catanzaro (90612 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 1.6 2023-12-18
11:33:30		 38.0267 16.352 8 2023-12-18
11:42:16		 Sala Sismica INGV-Roma 124126861
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-12-18 11:33:30 ± 0.2
Latitude 38.0267 ± 0.0099
Longitude 16.3520 ± 0.0103
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 124126861

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1241
Semi-minor axis of confidence ellipse (meter) 523
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) 1240.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 246
Number of associated phases, regardless of their use for origin computation 21
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.52790
Number of stations at which the event was observed 14
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 124126861
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-12-18 11:42:16
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.GATE.HHZ. 2023-12-18T11:35:07.07 3.0 undecidable manual Sn 1.53 0
IV.CAFE.HHZ. 2023-12-18T11:34:56.46 3.0 undecidable manual Sn 3.84 0
MN.KEK.HHZ. 2023-12-18T11:34:54.33 3.0 undecidable manual Sn -6.35 0
IV.MMO1.EHZ. 2023-12-18T11:34:49.03 3.0 positive manual Pn 1.98 0
IV.MFNL.HHZ. 2023-12-18T11:34:39.38 3.0 undecidable manual Sg -0.4 0
IV.GIUL.HHZ. 2023-12-18T11:34:24.53 3.0 positive manual Pn -6.66 0
IV.TDS.HHZ. 2023-12-18T11:34:23.87 3.0 undecidable manual Sg 5.89 0
IV.MRCB.HHZ. 2023-12-18T11:33:49.72 1.0 undecidable manual S 285 58.5969 50 0 24
IV.GMB1.HHZ. 2023-12-18T11:33:47.35 0.6 undecidable manual S 289 49.3173 50 0.11 47
IV.PLAC.HHZ. 2023-12-18T11:33:46.23 0.6 undecidable manual S 9 47.5191 50 -0.52 43
IY.CNDF.HHE.00 2023-12-18T11:33:45.29 0.3 undecidable manual S 267 43.3233 50 -0.34 69
IY.OPPI.HHZ. 2023-12-18T11:33:45.11 0.6 undecidable manual S 312 40.0266 50 0.35 46
IV.MPAZ.HHE. 2023-12-18T11:33:42.05 0.6 undecidable manual S 255 31.2465 105 -0.14 49
IV.MRCB.HHZ. 2023-12-18T11:33:41.91 0.3 undecidable manual P 285 58.5969 50 0.12 70
IV.PLAC.HHZ. 2023-12-18T11:33:40.09 0.3 undecidable manual P 9 47.5191 50 0.01 73
IV.SOI.EHZ. 2023-12-18T11:33:40.48 0.6 undecidable manual S 281 26.5512 107 -0.12 49
IV.GMB1.HHZ. 2023-12-18T11:33:40.54 0.3 undecidable manual P 289 49.3173 50 0.17 70
IY.OPPI.HHZ. 2023-12-18T11:33:39.17 0.3 undecidable manual P 312 40.0266 50 0.24 71
IY.CNDF.HHE.00 2023-12-18T11:33:39.41 0.1 undecidable manual P 267 43.3233 50 -0.03 98
IV.MPAZ.HHE. 2023-12-18T11:33:37.57 0.3 undecidable manual P 255 31.2465 105 0.12 73
IV.SOI.EHZ. 2023-12-18T11:33:36.48 0.1 undecidable manual P 281 26.5512 107 -0.05 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.SOI.EHE. ML:1.4 0.0001495 1.38 AML other m 2023-12-18T11:33:40.73
IV.SOI.EHN. ML:1.3 0.00010585 0.3 AML other m 2023-12-18T11:33:41.15
IY.OPPI.HHN. ML:1.7 0.00017199999999999998 0.34 AML other m 2023-12-18T11:33:45.90
IY.OPPI.HHE. ML:1.8 0.000199 1.18 AML other m 2023-12-18T11:33:46.97
IV.GMB1.HHN. ML:1.8 0.00015900000000000002 1.4 AML other m 2023-12-18T11:33:47.84
IV.GMB1.HNN. ML:1.8 0.000184 1.42 AML other m 2023-12-18T11:33:47.85
IV.GMB1.HHE. ML:1.8 0.0001615 0.6 AML other m 2023-12-18T11:33:47.56
IV.GMB1.HNE. ML:1.6 0.00010125000000000001 0.88 AML other m 2023-12-18T11:33:48.60
IV.PLAC.HHE. ML:1.2 0.000040818145 0.2816 AML other m 2023-12-18T11:33:48.38
IV.PLAC.HHN. ML:1.2 0.0000497978 1.4208 AML other m 2023-12-18T11:33:48.12
IV.MRCB.HHE. ML:1.6 0.00008523490499999999 0.384 AML other m 2023-12-18T11:33:51.03
IV.MRCB.HHN. ML:1.5 0.00006961373500000002 1.2992 AML other m 2023-12-18T11:33:52.10
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