Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.4 on date 21-09-2023 and time 11:14:13 (UTC) in region Stretto di Messina (Reggio di Calabria, Messina)

A magnitude ML 1.4 earthquake occured in region: Stretto di Messina (Reggio di Calabria, Messina), on

  • 21-09-2023 11:14:13 (UTC)
  • 21-09-2023 13:14:13 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.9300, 15.6720 at 34 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
Roghudi RC 8 1104 1104
Motta San Giovanni RC 9 6208 7312
Montebello Ionico RC 10 6214 13526
Melito di Porto Salvo RC 10 11355 24881
San Lorenzo RC 17 2640 27521
Bagaladi RC 17 1039 28560
Condofuri RC 19 5113 33673
Cardeto RC 19 1641 35314

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km S of Reggio di Calabria (183035 inhabitants)
31 Km SE of Messina (238439 inhabitants)
57 Km NE of Acireale (52622 inhabitants)
70 Km NE 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 1.4 2023-09-21
11:14:13		 37.9295 15.6717 34 2023-09-21
11:29:39		 Sala Sismica INGV-Roma 121311261
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-09-21 11:14:13 ± 0.17
Latitude 37.9295 ± 0.0099
Longitude 15.6717 ± 0.0080
Depth (km) 34 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 121311261

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1052
Semi-minor axis of confidence ellipse (meter) 431
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 157
Circular confidence region, given by single value of horizontal uncertainty (meter) 1050.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 191
Number of associated phases, regardless of their use for origin computation 19
Number of defining phases 19
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) 0.07734
Epicentral distance of station farthest from the epicenter (degree) 0.79500
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitude information

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations 6
Type of magnitude ML
Reference to an origin 121311261
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-09-21 11:29:39
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.EPMN.HHZ. 2023-09-21T11:14:30.00 0.6 undecidable manual S 255 44.9217 123 0.54 42
IV.PLAC.HHZ. 2023-09-21T11:14:29.14 0.6 undecidable manual P 49 88.245 54 0.47 40
IV.SOI.EHZ. 2023-09-21T11:14:28.15 0.6 undecidable manual S 64 37.0296 129 0.4 44
IV.AIO.HHZ. 2023-09-21T11:14:28.26 0.6 undecidable manual S 277 38.628 127 0.18 46
IV.MRCB.HHZ. 2023-09-21T11:14:25.74 0.6 undecidable manual S 6 25.9518 139 0.13 48
IY.CNDF.HHE. 2023-09-21T11:14:24.26 0.6 undecidable manual S 63 18.1707 150 -0.14 49
IT.ARMO.HNE. 2023-09-21T11:14:24.36 0.6 undecidable manual S 12 16.6722 152 0.16 48
IV.MILZ.HHE. 2023-09-21T11:14:23.77 0.1 undecidable manual P 315 54.0015 118 0 93
IV.MTTG.HHZ. 2023-09-21T11:14:23.20 0.6 undecidable manual S 17 8.5803 165 -0.2 49
IV.EPMN.HHZ. 2023-09-21T11:14:22.27 0.1 undecidable manual P 255 44.9217 123 -0.29 89
IV.SOI.EHZ. 2023-09-21T11:14:21.67 0.3 negative manual P 64 37.0296 129 0.1 71
IV.MPNC.HHE. 2023-09-21T11:14:21.60 0.1 undecidable manual P 311 36.8298 129 0.06 96
IV.AIO.HHZ. 2023-09-21T11:14:21.86 0.1 undecidable manual P 277 38.628 127 0.09 95
IT.SAAM.HNE. 2023-09-21T11:14:20.24 0.1 undecidable manual P 16 28.0497 137 -0.32 92
IV.MRCB.HHZ. 2023-09-21T11:14:20.25 0.1 negative manual P 6 25.9518 139 -0.09 97
IV.GMB1.HHE. 2023-09-21T11:14:20.76 0.1 undecidable manual P 25 29.8479 135 0.02 98
IT.ARMO.HNE. 2023-09-21T11:14:19.51 0.1 undecidable manual P 12 16.6722 152 -0.01 100
IY.CNDF.HHE. 2023-09-21T11:14:19.67 0.1 undecidable manual P 63 18.1707 150 0.03 99
IV.MTTG.HHZ. 2023-09-21T11:14:18.84 0.1 negative manual P 17 8.5803 165 -0.22 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MTTG.HHE. ML:1.6 0.0001705 1.02 AML other m 2023-09-21T11:14:23.79
IV.MTTG.HHN. ML:1.6 0.00016 0.38 AML other m 2023-09-21T11:14:23.61
IV.MRCB.HHN. ML:1.3 0.00007209999999999999 0.28 AML other m 2023-09-21T11:14:26.11
IV.MRCB.HHE. ML:1.6 0.0001245 0.7 AML other m 2023-09-21T11:14:26.00
IV.SOI.EHE. ML:1.3 0.0000519 0.58 AML other m 2023-09-21T11:14:28.61
IV.SOI.EHN. ML:1.2 0.00003885 1.36 AML other m 2023-09-21T11:14:29.83
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