Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 04-10-2023 and time 14:31:43 (Italy) in region 3 km N Roccella Valdemone (ME)

A magnitude ML 2.1 earthquake occured in region: 3 km N Roccella Valdemone (ME), on

  • 04-10-2023 12:31:43 (UTC)
  • 04-10-2023 14:31:43 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.9620, 15.0000 at 17 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
Roccella Valdemone ME 3 666 666
Santa Domenica Vittoria ME 6 980 1646
Malvagna ME 7 733 2379
Montalbano Elicona ME 7 2287 4666
Moio Alcantara ME 8 717 5383
Floresta ME 8 485 5868
Randazzo CT 10 10900 16768
San Piero Patti ME 10 2915 19683
Basicò ME 13 612 20295
Novara di Sicilia ME 13 1337 21632
Raccuja ME 13 1041 22673
Tripi ME 13 873 23546
Francavilla di Sicilia ME 14 3945 27491
Castiglione di Sicilia CT 14 3215 30706
Ucria ME 14 1058 31764
Fondachelli-Fantina ME 16 1019 32783
Librizzi ME 16 1660 34443
Motta Camastra ME 17 845 35288
Tortorici ME 17 6435 41723
Linguaglossa CT 18 5403 47126
Maletto CT 19 3920 51046
Mazzarrà Sant'Andrea ME 19 1531 52577
Falcone ME 19 2808 55385
Sinagra ME 19 2705 58090
Oliveri ME 19 2181 60271
Furnari ME 20 3784 64055
Montagnareale ME 20 1615 65670
Sant'Angelo di Brolo ME 20 3090 68760

Municipalities with at least 50000 inhabitants

An earthquake occurred to
41 Km NW of Acireale (52622 inhabitants)
52 Km N of Catania (314555 inhabitants)
55 Km SW of Messina (238439 inhabitants)
59 Km W of Reggio di Calabria (183035 inhabitants)
98 Km NE of Caltanissetta (63360 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 2.1 2023-10-04
12:31:43		 37.9618 15.0002 17 2023-10-04
12:39:21		 Sala Sismica INGV-Roma 121749441
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-10-04 12:31:43 ± 0.15
Latitude 37.9618 ± 0.0063
Longitude 15.0002 ± 0.0080
Depth (km) 17 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 121749441

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 747
Semi-minor axis of confidence ellipse (meter) 426
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 58
Circular confidence region, given by single value of horizontal uncertainty (meter) 750.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 90
Number of associated phases, regardless of their use for origin computation 36
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.28
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.60434
Number of stations at which the event was observed 27
Number of stations from which data was used for origin computation 12
Magnitude information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 52
Type of magnitude ML
Reference to an origin 121749441
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2023-10-04 12:39:21
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CAFE.HNZ. 2023-10-04T12:33:20.33 3.0 undecidable manual Sg 13.05 0
IV.MGR.HNZ. 2023-10-04T12:32:47.50 3.0 undecidable manual Sn 1.03 0
IV.SELL.HHZ. 2023-10-04T12:32:36.08 3.0 undecidable manual Sg 3.6 0
IV.SSY.HHZ. 2023-10-04T12:32:12.55 3.0 undecidable manual S 0.49 0
IV.SPS2.HHZ. 2023-10-04T12:32:12.70 3.0 negative manual Pn 1.14 0
IV.CET2.HHZ. 2023-10-04T12:32:11.62 3.0 undecidable manual Pn -0.48 0
IV.HAVL.HHZ. 2023-10-04T12:32:01.75 3.0 undecidable manual P -0.66 0
IV.ACATE.HNZ. 2023-10-04T12:32:01.28 3.0 negative manual P -1.24 0
IV.IVUG.HHZ. 2023-10-04T12:31:59.05 0.3 undecidable manual S 359 48.2184 100 0.41 65
IV.RAFF.HHZ. 2023-10-04T12:31:59.94 3.0 positive manual P -0.88 0
IV.SSY.HHZ. 2023-10-04T12:31:58.91 3.0 negative manual P -0.44 0
IV.IVPL.HHZ. 2023-10-04T12:31:58.49 0.3 undecidable manual S 358 46.0206 101 0.42 65
IV.SOI.EHZ. 2023-10-04T12:31:58.69 3.0 positive manual P -1.14 0
IT.LNT.HGZ. 2023-10-04T12:31:58.56 3.0 undecidable manual P 1.66 0
IV.PLLN.EHZ. 2023-10-04T12:31:55.97 3.0 undecidable manual P -0.69 0
IV.ISNA.HHZ. 2023-10-04T12:31:55.16 0.1 undecidable manual P 349 67.0773 97 0.18 88
IV.MRCB.HHZ. 2023-10-04T12:31:54.59 0.1 undecidable manual P 70 65.2902 97 -0.12 90
IV.MTTG.HHZ. 2023-10-04T12:31:54.05 0.1 undecidable manual P 86 61.3941 97 -0.06 91
IV.HLNI.HHZ. 2023-10-04T12:31:54.72 3.0 positive manual P -1.21 0
IV.EPZF.HHZ. 2023-10-04T12:31:52.27 0.3 undecidable manual S 219 19.7691 122 0.82 60
IV.IVUG.HHZ. 2023-10-04T12:31:52.05 0.1 undecidable manual P 359 48.2184 100 -0.05 94
IV.IVPL.HHZ. 2023-10-04T12:31:51.82 0.1 undecidable manual P 358 46.0206 101 0.05 94
IV.AIO.HHZ. 2023-10-04T12:31:51.70 0.3 undecidable manual S 87 20.3685 121 0.11 73
IV.EPOZ.HHZ. 2023-10-04T12:31:51.95 3.0 positive manual P 1.38 0
IV.GALF.HHZ. 2023-10-04T12:31:51.78 3.0 positive manual P -0.4 0
IV.ECTS.HHZ. 2023-10-04T12:31:50.26 0.1 undecidable manual S 130 13.7751 134 0.08 99
IV.LIBRI.HHZ. 2023-10-04T12:31:50.40 0.1 undecidable manual S 335 14.874 131 0 100
IV.NOV.HHZ. 2023-10-04T12:31:50.32 0.3 undecidable manual S 58 13.9749 134 0.1 73
IV.MUCR.HHZ. 2023-10-04T12:31:49.85 0.1 undecidable manual S 309 14.2746 133 -0.42 92
IV.ESVO.HHZ. 2023-10-04T12:31:48.53 0.1 undecidable manual P 193 21.4674 119 0.35 93
IV.LIBRI.HHZ. 2023-10-04T12:31:47.00 0.6 negative manual P 335 14.874 131 -0.35 47
IV.AIO.HHZ. 2023-10-04T12:31:47.84 0.1 positive manual P 87 20.3685 121 -0.19 96
IV.NOV.HHZ. 2023-10-04T12:31:47.10 0.1 positive manual P 58 13.9749 134 -0.14 98
IV.ECTS.HHZ. 2023-10-04T12:31:47.07 0.1 undecidable manual P 130 13.7751 134 -0.15 98
IV.EPZF.HHZ. 2023-10-04T12:31:47.64 0.1 negative manual P 219 19.7691 122 -0.31 93
IV.MUCR.HHZ. 2023-10-04T12:31:46.86 0.3 negative manual P 309 14.2746 133 -0.41 69
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MUCR.HHE. ML:2.5 0.00216 1.82 AML other m 2023-10-04T12:31:49.06
IV.MUCR.HHN. ML:2.5 0.00213 0.54 AML other m 2023-10-04T12:31:50.53
IV.NOV.HHE. ML:2.4 0.0019199999999999998 0.42 AML other m 2023-10-04T12:31:50.58
IV.NOV.HNE. ML:1.8 0.00044799999999999994 0.42 AML other m 2023-10-04T12:31:50.58
IV.LIBRI.HHN. ML:1.7 0.000368 0.4 AML other m 2023-10-04T12:31:50.56
IV.NOV.HHN. ML:2.4 0.00185 0.64 AML other m 2023-10-04T12:31:50.50
IV.NOV.HNN. ML:1.8 0.0004255 0.64 AML other m 2023-10-04T12:31:50.51
IV.ECTS.HHN. ML:2.6 0.00292 0.24 AML other m 2023-10-04T12:31:50.91
IV.ECTS.HHE. ML:2.3 0.00147 1.32 AML other m 2023-10-04T12:31:51.74
IV.LIBRI.HNN. ML:2.2 0.0011149999999999999 0.82 AML other m 2023-10-04T12:31:51.60
IV.LIBRI.HNE. ML:2.0 0.0007635 0.16 AML other m 2023-10-04T12:31:51.33
IV.AIO.HHE. ML:2.4 0.001625 0.18 AML other m 2023-10-04T12:31:51.87
IV.AIO.HHN. ML:2.4 0.0014849999999999998 0.2 AML other m 2023-10-04T12:31:52.01
IV.EPZF.HNE. ML:2.7 0.002935 0.54 AML other m 2023-10-04T12:31:52.62
IV.EPZF.HHE. ML:2.7 0.0030999999999999995 0.6 AML other m 2023-10-04T12:31:52.63
IV.LIBRI.HHE. ML:1.7 0.0003305 0.68 AML other m 2023-10-04T12:31:52.62
IV.EPZF.HNN. ML:2.5 0.0021349999999999997 0.86 AML other m 2023-10-04T12:31:52.99
IV.EPZF.HHN. ML:2.5 0.001955 1.1 AML other m 2023-10-04T12:31:53.01
IV.IVPL.HNN. ML:2.2 0.000398 0.38 AML other m 2023-10-04T12:31:59.44
IV.IVPL.HHN. ML:2.2 0.0004415 0.38 AML other m 2023-10-04T12:31:59.45
IV.IVUG.HHN. ML:2.1 0.000314 0.22 AML other m 2023-10-04T12:31:59.94
IV.IVPL.HNE. ML:2.2 0.00042300000000000004 0.74 AML other m 2023-10-04T12:32:00.65
IV.IVPL.HHE. ML:2.2 0.000425 0.76 AML other m 2023-10-04T12:32:00.66
IV.EPOZ.HHN. ML:2.1 0.0004955000000000001 0.48 AML other m 2023-10-04T12:32:00.44
IV.EPOZ.HNN. ML:2.1 0.00048450000000000007 0.42 AML other m 2023-10-04T12:32:00.68
IV.EPOZ.HHE. ML:2.2 0.000624 0.36 AML other m 2023-10-04T12:32:00.85
IV.IVUG.HHE. ML:1.9 0.000192 1.02 AML other m 2023-10-04T12:32:01.96
IV.MTTG.HHN. ML:1.9 0.0001455 1.32 AML other m 2023-10-04T12:32:03.84
IV.GALF.HHN. ML:2.4 0.0006054999999999999 1.3 AML other m 2023-10-04T12:32:03.96
IV.MTTG.HHE. ML:1.8 0.000119 0.54 AML other m 2023-10-04T12:32:04.35
IV.GALF.HNN. ML:2.1 0.000333 0.68 AML other m 2023-10-04T12:32:04.68
IV.GALF.HHE. ML:2.3 0.0005115 0.54 AML other m 2023-10-04T12:32:04.11
IV.HLNI.HHN. ML:1.6 0.00005895 0.58 AML other m 2023-10-04T12:32:05.47
IV.SOI.EHN. ML:1.6 0.00004215 1.16 AML other m 2023-10-04T12:32:05.33
IV.EPOZ.HNE. ML:2.3 0.000652 0.64 AML other m 2023-10-04T12:32:06.23
IV.HLNI.HHE. ML:1.5 0.000056 0.46 AML other m 2023-10-04T12:32:07.48
IV.MRCB.HHN. ML:1.6 0.00007065 0.96 AML other m 2023-10-04T12:32:08.22
IV.GALF.HNE. ML:2.0 0.0002455 0.48 AML other m 2023-10-04T12:32:09.40
IV.PLLN.EHN. ML:2.2 0.0002375 0.44 AML other m 2023-10-04T12:32:10.96
IV.MRCB.HHE. ML:1.6 0.0000663 0.72 AML other m 2023-10-04T12:32:11.13
IV.PLLN.EHE. ML:2.1 0.00020500000000000002 0.52 AML other m 2023-10-04T12:32:13.29
IV.SSY.HHE. ML:1.8 0.00008195 1.3 AML other m 2023-10-04T12:32:14.14
IV.RAFF.HHN. ML:1.8 0.00006625 0.48 AML other m 2023-10-04T12:32:15.32
IV.RAFF.HHE. ML:1.8 0.0000678 0.54 AML other m 2023-10-04T12:32:15.49
IV.SSY.HHN. ML:2.0 0.0001265 0.68 AML other m 2023-10-04T12:32:18.57
IV.HAVL.HHN. ML:2.1 0.00009645000000000001 0.52 AML other m 2023-10-04T12:32:18.30
IV.HAVL.HHE. ML:2.0 0.00007705 1.06 AML other m 2023-10-04T12:32:18.83
IV.SOI.EHE. ML:1.4 0.00003235000000000001 0.98 AML other m 2023-10-04T12:32:22.31
IV.CET2.HHE. ML:2.2 0.00004825 0.76 AML other m 2023-10-04T12:32:35.70
IV.CET2.HHN. ML:2.2 0.00004825 0.54 AML other m 2023-10-04T12:32:36.34
IV.SPS2.HHN. ML:1.9 0.00002465 1.7 AML other m 2023-10-04T12:32:42.00
IV.SPS2.HHE. ML:1.8 0.00001965 1.32 AML other m 2023-10-04T12:32:54.88
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
Waveforms Seismic signals in miniseed + resp format Download