Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 30-04-2023 and time 23:06:52 (Italy) in region Stretto di Messina (Reggio di Calabria, Messina)

A magnitude ML 1.8 earthquake occured in region: Stretto di Messina (Reggio di Calabria, Messina), on

  • 30-04-2023 21:06:52 (UTC)
  • 30-04-2023 23:06:52 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.8840, 15.4030 at 33 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
Sant'Alessio Siculo ME 6 1554 1554
Forza d'Agrò ME 7 911 2465
Santa Teresa di Riva ME 8 9377 11842
Letojanni ME 8 2861 14703
Furci Siculo ME 9 3382 18085
Gallodoro ME 10 367 18452
Savoca ME 10 1732 20184
Roccalumera ME 10 4141 24325
Casalvecchio Siculo ME 11 842 25167
Taormina ME 11 10960 36127
Castelmola ME 11 1088 37215
Mongiuffi Melia ME 11 600 37815
Nizza di Sicilia ME 12 3667 41482
Giardini-Naxos ME 12 9415 50897
Pagliara ME 12 1170 52067
Roccafiorita ME 13 197 52264
Limina ME 13 836 53100
Alì Terme ME 14 2539 55639
Mandanici ME 15 601 56240
Graniti ME 15 1492 57732
Fiumedinisi ME 16 1409 59141
Gaggi ME 16 3184 62325
Alì ME 16 768 63093
Calatabiano CT 17 5308 68401
Antillo ME 17 919 69320
Scaletta Zanclea ME 19 2140 71460
Itala ME 19 1640 73100
Fiumefreddo di Sicilia CT 20 9623 82723

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km SW of Reggio di Calabria (183035 inhabitants)
37 Km NE of Acireale (52622 inhabitants)
37 Km SW of Messina (238439 inhabitants)
51 Km NE of Catania (314555 inhabitants)
92 Km N of Siracusa (122291 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 1.8 2023-04-30
21:06:52		 37.8842 15.403 33 2024-03-01
17:18:08		 Bollettino Sismico Italiano INGV 117375491
Reviewed
Rev100 		ML 1.8 2023-04-30
21:06:52		 37.8823 15.3963 34 2023-04-30
21:25:42		 Sala Sismica INGV-Roma 116914761
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-04-30 21:06:52 ± 0.1
Latitude 37.8842 ± 0.0045
Longitude 15.4030 ± 0.0080
Depth (km) 33 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 117375491

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 647
Semi-minor axis of confidence ellipse (meter) 403
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 307
Circular confidence region, given by single value of horizontal uncertainty (meter) 650.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 108
Number of associated phases, regardless of their use for origin computation 30
Number of defining phases 29
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.25
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.95058
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 16
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 117375491
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2023-05-15 09:42:14

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 116914761
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-04-30 21:25:42
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.HAVL.HHZ. 2023-04-30T21:07:23.52 0.6 undecidable manual S 194 105.5166 54 0.45 52
IV.HSRS.HHE. 2023-04-30T21:07:19.09 0.6 undecidable manual S 190 89.244 106 -0.28 56
IV.SSY.HHZ. 2023-04-30T21:07:18.68 0.6 undecidable manual S 200 85.6476 106 0.23 57
IV.HLNI.HHZ. 2023-04-30T21:07:16.24 0.6 undecidable manual S 218 75.5688 109 0.35 56
IV.HCRL.HHE. 2023-04-30T21:07:15.86 0.6 undecidable manual S 206 74.1702 109 0.31 57
IV.HAGA.HHE. 2023-04-30T21:07:14.43 0.3 undecidable manual S 198 69.9744 110 -0.05 91
IV.HAVL.HHZ. 2023-04-30T21:07:09.88 0.3 undecidable manual P 194 105.5166 54 -0.18 82
IV.MSRU.HHE. 2023-04-30T21:07:08.63 0.3 undecidable manual S 12 43.1235 123 0.59 84
IV.HSRS.HHE. 2023-04-30T21:07:08.33 0.3 undecidable manual P 190 89.244 106 0.4 81
IV.MILZ.HHE. 2023-04-30T21:07:08.73 0.6 undecidable manual S 341 45.5211 121 0.14 62
IY.CNDF.HHE.00 2023-04-30T21:07:07.71 0.3 undecidable manual S 71 41.8248 124 -0.06 95
IV.SSY.HHZ. 2023-04-30T21:07:06.89 0.3 undecidable manual P 200 85.6476 106 -0.5 80
IV.HLNI.HHZ. 2023-04-30T21:07:05.49 0.3 undecidable manual P 218 75.5688 109 -0.42 83
IV.HCRL.HHE. 2023-04-30T21:07:05.52 0.3 undecidable manual P 206 74.1702 109 -0.19 87
IV.HAGA.HHE. 2023-04-30T21:07:04.68 0.3 undecidable manual P 198 69.9744 110 -0.42 84
IV.EPMN.HHZ. 2023-04-30T21:07:04.06 0.3 undecidable manual S 250 20.9679 145 0.34 93
IV.MPNC.HHE. 2023-04-30T21:07:04.94 0.3 undecidable manual S 351 29.4483 135 -0.24 94
IV.SOI.EHE. 2023-04-30T21:07:04.15 0.3 undecidable manual P 70 60.6948 114 0.37 87
IV.EFIU.HNZ. 2023-04-30T21:07:03.43 0.3 undecidable manual S 238 19.869 146 -0.12 98
IV.AIO.HHZ. 2023-04-30T21:07:02.76 0.3 undecidable manual S 303 17.7711 149 -0.48 92
IV.MPAZ.HHE. 2023-04-30T21:07:02.86 0.3 undecidable manual P 82 53.4021 117 0.1 93
IY.CNDF.HHE.00 2023-04-30T21:07:01.12 0.3 undecidable manual P 71 41.8248 124 -0.11 94
IV.MSRU.HHE. 2023-04-30T21:07:01.44 0.3 undecidable manual P 12 43.1235 123 0.05 95
IV.MILZ.HHE. 2023-04-30T21:07:01.79 0.3 undecidable manual P 341 45.5211 121 0.09 94
IV.EPOZ.HHZ. 2023-04-30T21:07:00.36 1.0 undecidable manual P 219 30.1476 134 0.55 29
IV.EPMN.HHZ. 2023-04-30T21:06:59.08 0.3 undecidable manual P 250 20.9679 145 0.19 96
IV.MPNC.HHE. 2023-04-30T21:06:59.37 0.3 undecidable manual P 351 29.4483 135 -0.37 92
IV.AIO.HHZ. 2023-04-30T21:06:58.56 0.3 undecidable manual P 303 17.7711 149 -0.05 100
IV.EFIU.HNZ. 2023-04-30T21:06:58.98 0.3 undecidable manual P 238 19.869 146 0.19 97
IV.ARMO.HNZ. 2023-04-30T21:06:58.27 3.0 undecidable manual P 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.AIO.HHE. ML:1.6 0.00015849999999999998 1.22 AML other m 2023-04-30T21:07:03.76
IV.AIO.HHN. ML:1.7 0.000178 0.6 AML other m 2023-04-30T21:07:04.66
IV.EPMN.HHN. ML:1.6 0.0001515 1.34 AML other m 2023-04-30T21:07:05.06
IV.EPMN.HHE. ML:1.7 0.0002 0.24 AML other m 2023-04-30T21:07:05.22
IV.HLNI.HHE. ML:1.6 0.00004825 0.7 AML other m 2023-04-30T21:07:16.57
IV.HLNI.HHN. ML:1.4 0.00003184793 0.1024 AML other m 2023-04-30T21:07:16.92
IV.SSY.HNN. ML:2.0 0.000104104765 0.1152 AML other m 2023-04-30T21:07:19.36
IV.SSY.HHE. ML:1.8 0.00006966734499999999 1.216 AML other m 2023-04-30T21:07:19.60
IV.SSY.HNE. ML:1.9 0.000099715455 1.0112 AML other m 2023-04-30T21:07:21.47
IV.SSY.HHN. ML:2.1 0.00013780205 1.744 AML other m 2023-04-30T21:07:20.90
IV.HAVL.HHN. ML:2.0 0.0000840335 0.2688 AML other m 2023-04-30T21:07:23.80
IV.HAVL.HHE. ML:1.8 0.000058127419999999996 1.7184 AML other m 2023-04-30T21:07:23.94
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