Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.7 on date 30-08-2023 and time 16:27:32 (UTC) in region 10 km SE Maletto (CT)

A magnitude ML 2.7 earthquake occured in region: 10 km SE Maletto (CT), on

  • 30-08-2023 16:27:32 (UTC)
  • 30-08-2023 18:27:32 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.7840, 14.9600 at 27 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
Maletto CT 10 3920 3920
Randazzo CT 11 10900 14820
Bronte CT 11 19172 33992
Santa Domenica Vittoria ME 15 980 34972
Moio Alcantara ME 15 717 35689
Milo CT 15 1087 36776
Maniace CT 16 3765 40541
Zafferana Etnea CT 16 9517 50058
Sant'Alfio CT 17 1582 51640
Ragalna CT 17 3924 55564
Roccella Valdemone ME 17 666 56230
Malvagna ME 17 733 56963
Adrano CT 18 36122 93085
Linguaglossa CT 18 5403 98488
Biancavilla CT 18 24007 122495
Castiglione di Sicilia CT 18 3215 125710
Santa Venerina CT 19 8592 134302
Piedimonte Etneo CT 20 3963 138265
Santa Maria di Licodia CT 20 7641 145906
Nicolosi CT 20 7463 153369

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km NW of Acireale (52622 inhabitants)
33 Km NW of Catania (314555 inhabitants)
70 Km SW of Messina (238439 inhabitants)
70 Km SW of Reggio di Calabria (183035 inhabitants)
85 Km E of Caltanissetta (63360 inhabitants)
86 Km NW of Siracusa (122291 inhabitants)
98 Km N of Ragusa (73313 inhabitants)
100 Km NE of Vittoria (63339 inhabitants)
Recent and historical seismicity

These maps show the seismic activity in different time intervals, before the seismic event to which they refer. Data reported in the first two maps come from the analysis carried out in real time by the personnel of the INGV Operating Rooms, immediately after each earthquake. The third map shows data from 1985 to the date of the earthquake: the locations are reviewed by the seismological analysts of the INGV Italian Seismic Bulletin (Bollettino Sismico Italiano dell’INGV). The localization parameters (hypocentral coordinates and magnitude) are the best possible estimate with the data available to the INGV, but are constantly updated according to further data that become available. The location and magnitude parameters, subsequently reviewed by seismological analysts, may vary.

Earthquakes of the 3 days preceding this event

Earthquakes of the 3 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 0.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 72 hours preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes of the 90 days preceding this event

Earthquakes of the 90 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 2.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 90 days preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes from 1985 to the date of the event

Earthquakes from 1985 to the date of the event

This map shows the earthquake epicenters with magnitude ≥ 3.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, from 1985 to the date of this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes since 1000 AD until 2019

Earthquakes since 1000 AD until 2019

This map shows the epicenters of the historical earthquakes catalogue CPT15 (Catalogo Parametrico dei Terremoti Italiani, 2015 version 3.0, https://doi.org/10.13127/cpti/cpti15.3) since 1000 AD until 2019. The size of the square indicates the different classes of magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The black and white star is the epicenter of the current earthquake.
Seismic hazard

Seismic hazard maps provide probabilistic estimates of the earthquake ground shaking exceeding a given threshold in a given geographic region within a given time window. Thus, it is not a deterministic prediction - a target that may be never reached given the complexity of the earthquake physical phenomenon - nor of the maximum expected earthquake since this has extremely low probabilities to occur.

In 2004, it was published the seismic hazard map of Italy (http://zonesismiche.mi.ingv.it) that provides a picture of the most hazardous geographic regions. The seismic hazard map of Italy (GdL MPS, 2004; rif. Ordinanza PCM del 28 aprile 2006, n. 3519, All. 1b) provides the 10% probability of exceedance in 50 years of the horizontal acceleration at rock sites (i.e., Vs30>800 m/s; cat. A, 3.2.1 of the D.M. 14.09.2005).

The colours indicate the various values of the ground acceleration that have 10% to be exceeded within 50 years. In general, the colours associated to low values of acceleration refer to areas that are less hazardous and stronger earthquakes repeat less frequently although they may still occur.

Seismic hazard map

Seismic hazard map

This map shows the seismic hazard map of Italy for the region where the earthquake occurred.
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		ML 2.7 2023-08-30
16:27:32		 37.784 14.9597 27 2024-09-10
16:44:19		 Bollettino Sismico Italiano INGV 121609671
Reviewed
Rev200 		ML 2.7 2023-08-30
16:27:32		 37.785 14.95 22 2024-09-10
14:29:05		 Sala Operativa INGV_OE (Catania) 120616451
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-08-30 16:27:32 ± 0.08
Latitude 37.7840 ± 0.0036
Longitude 14.9597 ± 0.0057
Depth (km) 27 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 121609671

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 550
Semi-minor axis of confidence ellipse (meter) 195
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 109
Circular confidence region, given by single value of horizontal uncertainty (meter) 550.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 35
Number of associated phases, regardless of their use for origin computation 49
Number of defining phases 49
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0.01529
Epicentral distance of station farthest from the epicenter (degree) 1.00904
Number of stations at which the event was observed 33
Number of stations from which data was used for origin computation 33
Magnitudes information

ML:2.7

Field Value
Value 2.7
Uncertainty 0.3
Num. used stations 60
Type of magnitude ML
Reference to an origin 121609671
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2024-09-10 14:35:43

ML:2.7

Field Value
Value 2.7
Uncertainty 0.3
Num. used stations
Type of magnitude ML
Reference to an origin 120616451
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2023-08-30 17:05:09
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.HMDC.HHZ. 2023-08-30T16:28:00.30 0.6 undecidable manual S 190 92.8404 101 0.42 39
IV.HAVL.HHZ. 2023-08-30T16:27:59.80 0.6 undecidable manual S 171 92.5407 101 -0.01 42
IV.HSRS.HHZ. 2023-08-30T16:27:56.70 0.6 undecidable manual S 163 80.0643 103 0.15 43
IV.MPNC.HHN. 2023-08-30T16:27:50.10 0.6 undecidable manual S 40 52.9026 111 0.51 42
IV.CROCE.HHZ. 2023-08-30T16:27:50.63 0.3 undecidable manual P 200 111.999 99 -0.48 56
IV.SOI.EHZ. 2023-08-30T16:27:49.77 0.3 undecidable manual P 71 101.0211 100 0.33 59
IV.HLNI.HHZ. 2023-08-30T16:27:48.50 0.3 undecidable manual S 189 48.9177 113 -0.11 68
IV.HVIT.HHZ. 2023-08-30T16:27:48.39 0.3 undecidable manual P 204 95.9262 101 -0.27 60
IV.CSLB.HHZ. 2023-08-30T16:27:47.01 0.3 undecidable manual P 282 80.7636 103 0.63 55
IV.HAVL.HHZ. 2023-08-30T16:27:47.68 0.3 undecidable manual P 171 92.5407 101 -0.48 58
IV.HMDC.HHZ. 2023-08-30T16:27:47.85 0.1 undecidable manual P 190 92.8404 101 -0.35 80
IV.HSRS.HHZ. 2023-08-30T16:27:46.09 0.3 undecidable manual P 163 80.0643 103 -0.19 63
IV.RAFF.HHZ. 2023-08-30T16:27:46.82 0.1 undecidable manual P 220 81.4518 103 0.33 81
IV.MSRU.HHZ. 2023-08-30T16:27:45.24 0.3 undecidable manual P 42 71.6727 105 0.22 64
IV.HVZN.HHZ. 2023-08-30T16:27:44.72 0.3 undecidable manual P 198 70.5738 105 -0.13 65
IV.NOV.HHZ. 2023-08-30T16:27:44.30 0.6 undecidable manual S 30 31.1466 125 -0.14 46
IV.LIBRI.HHZ. 2023-08-30T16:27:44.80 0.6 undecidable manual S 355 33.3444 123 -0.12 47
IV.MUCR.HHZ. 2023-08-30T16:27:43.80 0.6 undecidable manual S 345 29.748 127 -0.32 45
IV.MPNC.HHN. 2023-08-30T16:27:42.33 0.1 undecidable manual P 40 52.9026 111 0.07 91
IV.EPMN.HHZ. 2023-08-30T16:27:42.30 0.6 undecidable manual S 78 19.4694 140 0.17 48
IV.ECBD.HHN. 2023-08-30T16:27:41.40 0.6 undecidable manual S 92 11.0778 155 0.48 45
IV.HLNI.HHZ. 2023-08-30T16:27:41.56 0.3 undecidable manual P 189 48.9177 113 -0.13 68
IV.ESCV.HHZ. 2023-08-30T16:27:41.60 0.6 undecidable manual S 252 13.2756 151 0.42 45
IV.ECTS.HHZ. 2023-08-30T16:27:41.70 0.3 undecidable manual S 52 17.871 143 -0.15 71
IV.EMSG.HHZ. 2023-08-30T16:27:40.20 0.6 undecidable manual S 348 4.1958 170 -0.16 49
IV.EMNR.HHZ. 2023-08-30T16:27:40.80 0.6 undecidable manual S 58 6.8931 164 0.28 47
IV.GALF.HHZ. 2023-08-30T16:27:40.29 0.1 positive manual P 257 35.4423 121 0.46 86
IV.MSFR.HHZ. 2023-08-30T16:27:40.72 0.1 undecidable manual P 311 42.5241 116 -0.07 94
IV.EMFS.HHE. 2023-08-30T16:27:40.30 0.6 undecidable manual S 155 7.881 162 -0.3 47
IV.EPZF.HNZ. 2023-08-30T16:27:40.90 0.6 undecidable manual S 296 10.0788 157 0.1 48
IV.LIBRI.HHZ. 2023-08-30T16:27:39.21 0.3 undecidable manual P 355 33.3444 123 -0.35 67
IV.NOV.HHZ. 2023-08-30T16:27:39.23 0.1 positive manual P 30 31.1466 125 -0.05 95
IV.EPOZ.HHZ. 2023-08-30T16:27:38.87 0.3 undecidable manual P 122 23.6541 134 0.49 66
IV.MUCR.HHZ. 2023-08-30T16:27:38.82 0.1 negative manual P 345 29.748 127 -0.28 91
IV.EFIU.HHZ. 2023-08-30T16:27:38.33 0.3 undecidable manual P 88 21.9669 136 0.12 72
IV.ESML.HHZ. 2023-08-30T16:27:38.36 0.3 undecidable manual P 201 19.6692 140 0.39 67
IV.EPMN.HHZ. 2023-08-30T16:27:37.85 0.1 positive manual P 78 19.4694 140 -0.09 95
IV.ECZM.HHZ. 2023-08-30T16:27:37.03 0.1 undecidable manual P 220 7.5813 162 -0.02 100
IV.EMNR.HHZ. 2023-08-30T16:27:37.02 0.1 undecidable manual P 58 6.8931 164 0 100
IV.ESCV.HHZ. 2023-08-30T16:27:37.27 0.1 positive manual P 252 13.2756 151 -0.13 97
IV.ESVO.HHZ. 2023-08-30T16:27:37.07 0.1 undecidable manual P 223 1.6983 176 0.19 97
IV.ECBD.HHN. 2023-08-30T16:27:37.36 0.1 undecidable manual P 92 11.0778 155 0.11 97
IV.ECTS.HHZ. 2023-08-30T16:27:37.55 0.1 undecidable manual P 52 17.871 143 -0.24 93
IV.ESAL.HHZ. 2023-08-30T16:27:37.93 0.1 negative manual P 102 15.6732 146 0.34 92
IV.EPZF.HNZ. 2023-08-30T16:27:36.92 0.1 undecidable manual P 296 10.0788 157 -0.26 95
IV.EMFS.HHE. 2023-08-30T16:27:36.92 0.1 undecidable manual P 155 7.881 162 -0.14 97
IV.EMFO.HHZ. 2023-08-30T16:27:36.87 0.3 undecidable manual P 115 12.6762 152 -0.48 67
IV.EMCN.HHN. 2023-08-30T16:27:36.99 0.1 undecidable manual P 83 6.4935 165 -0.02 100
IV.EMSG.HHZ. 2023-08-30T16:27:36.76 0.1 undecidable manual P 348 4.1958 170 -0.16 98
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.EMSG.HHE. ML:0.0 0.010858182 0.1792 AML other m 2023-08-30T16:27:40.58
IV.EPZF.HNE. ML:0.0 0.005564039 0.4096 AML other m 2023-08-30T16:27:41.34
IV.EPZF.HHE. ML:0.0 0.006217779499999999 0.3712 AML other m 2023-08-30T16:27:41.36
IV.EPZF.HNN. ML:0.0 0.0039296025000000005 0.2944 AML other m 2023-08-30T16:27:41.53
IV.EPZF.HHN. ML:0.0 0.0034103265 0.3584 AML other m 2023-08-30T16:27:41.54
IV.ESVO.HHE. ML:0.0 0.0036800139999999997 0.2304 AML other m 2023-08-30T16:27:43.45
IV.ESCV.HHE. ML:0.0 0.0021313205 0.2304 AML other m 2023-08-30T16:27:42.76
IV.ESVO.HHN. ML:0.0 0.0048251295 0.2944 AML other m 2023-08-30T16:27:42.28
IV.EPMN.HHE. ML:0.0 0.0050517705 0.2944 AML other m 2023-08-30T16:27:42.74
IV.ESAL.HHE. ML:0.0 0.0031573115 0.5504 AML other m 2023-08-30T16:27:47.49
IV.ESCV.HHN. ML:0.0 0.003451855 0.2432 AML other m 2023-08-30T16:27:42.85
IV.EPMN.HHN. ML:0.0 0.0023818145 0.2304 AML other m 2023-08-30T16:27:43.52
IV.EFIU.HHE. ML:0.0 0.0010067385 0.64 AML other m 2023-08-30T16:27:45.98
IV.EFIU.HNE. ML:0.0 0.00093318675 0.3712 AML other m 2023-08-30T16:27:45.99
IV.EFIU.HHN. ML:0.0 0.00083810935 0.4352 AML other m 2023-08-30T16:27:44.92
IV.ESML.HHN. ML:2.3 0.0010249999999999999 0.54 AML other m 2023-08-30T16:27:44.36
IV.ESML.HNN. ML:2.4 0.00115 0.54 AML other m 2023-08-30T16:27:44.36
IV.ESML.HHE. ML:2.6 0.0016899999999999999 0.72 AML other m 2023-08-30T16:27:44.42
IV.ESML.HNE. ML:2.6 0.00183 0.7 AML other m 2023-08-30T16:27:44.42
IV.ESAL.HHN. ML:0.0 0.0027245620000000003 0.2816 AML other m 2023-08-30T16:27:45.30
IV.EFIU.HNN. ML:0.0 0.0008343387 0.3328 AML other m 2023-08-30T16:27:44.96
IV.EMSG.HHN. ML:0.0 0.0090580705 0.2304 AML other m 2023-08-30T16:27:46.57
IV.GALF.HNE. ML:2.4 0.0008805000000000001 1.52 AML other m 2023-08-30T16:27:47.17
IV.GALF.HHE. ML:2.8 0.0018549999999999999 1.44 AML other m 2023-08-30T16:27:48.18
IV.EPOZ.HHN. ML:0.0 0.00099943605 0.4608 AML other m 2023-08-30T16:27:46.17
IV.EPOZ.HNN. ML:0.0 0.0011508435 0.448 AML other m 2023-08-30T16:27:46.18
IV.EPOZ.HNE. ML:2.4 0.0011600000000000002 1.6 AML other m 2023-08-30T16:27:53.04
IV.EPOZ.HHE. ML:2.4 0.0010545 1.38 AML other m 2023-08-30T16:27:53.04
IV.GALF.HHN. ML:2.8 0.0018599999999999999 0.52 AML other m 2023-08-30T16:27:56.23
IV.GALF.HNN. ML:2.4 0.0008545 0.96 AML other m 2023-08-30T16:27:57.83
IV.NOV.HHE. ML:0.0 0.001462863 0.2944 AML other m 2023-08-30T16:27:44.67
IV.MUCR.HHN. ML:0.0 0.00058619645 0.4096 AML other m 2023-08-30T16:27:55.87
IV.NOV.HNE. ML:0.0 0.00034718975 0.3072 AML other m 2023-08-30T16:27:44.67
IV.MUCR.HHE. ML:0.0 0.001057893 0.3072 AML other m 2023-08-30T16:27:44.77
IV.NOV.HHN. ML:0.0 0.0011203284999999998 0.2304 AML other m 2023-08-30T16:27:45.94
IV.NOV.HNN. ML:2.2 0.0005325 0.6 AML other m 2023-08-30T16:27:58.05
IV.LIBRI.HHE. ML:2.6 0.001265 0.4 AML other m 2023-08-30T16:27:58.48
IV.LIBRI.HNE. ML:2.8 0.0020150000000000003 0.94 AML other m 2023-08-30T16:27:58.51
IV.LIBRI.HHN. ML:2.5 0.0011099999999999999 0.52 AML other m 2023-08-30T16:27:58.57
IV.LIBRI.HNN. ML:2.9 0.0025999999999999994 1.24 AML other m 2023-08-30T16:27:59.30
IV.HLNI.HNE. ML:3.0 0.002255 0.12 AML other m 2023-08-30T16:28:02.45
IV.HLNI.HHE. ML:3.0 0.0025150000000000003 0.12 AML other m 2023-08-30T16:28:02.45
IV.HLNI.HNN. ML:2.9 0.0017250000000000002 1.08 AML other m 2023-08-30T16:28:03.88
IV.HLNI.HHN. ML:2.9 0.0018199999999999998 1.08 AML other m 2023-08-30T16:28:03.88
IV.MSRU.HNN. ML:2.8 0.0010055 0.62 AML other m 2023-08-30T16:28:09.55
IV.MSRU.HHN. ML:2.8 0.0009715 0.62 AML other m 2023-08-30T16:28:09.55
IV.HSRS.HHE. ML:2.9 0.0010049999999999998 1.02 AML other m 2023-08-30T16:28:11.55
IV.MSRU.HHE. ML:2.8 0.0009325000000000001 0.62 AML other m 2023-08-30T16:28:11.11
IV.HVZN.HHN. ML:3.0 0.001585 1.46 AML other m 2023-08-30T16:28:11.16
IV.HVZN.HNN. ML:3.1 0.0017900000000000001 1.5 AML other m 2023-08-30T16:28:11.94
IV.MSRU.HNE. ML:2.8 0.0009015 0.62 AML other m 2023-08-30T16:28:11.11
IV.HSRS.HHN. ML:2.9 0.0009895000000000001 0.34 AML other m 2023-08-30T16:28:11.50
IV.HVZN.HHE. ML:3.1 0.001915 1.36 AML other m 2023-08-30T16:28:12.75
IV.HVZN.HNE. ML:3.1 0.002 1.34 AML other m 2023-08-30T16:28:12.78
IV.RAFF.HHN. ML:2.8 0.0006990000000000001 0.84 AML other m 2023-08-30T16:28:13.62
IV.RAFF.HNE. ML:2.5 0.00040100000000000004 0.36 AML other m 2023-08-30T16:28:13.25
IV.RAFF.HHE. ML:2.8 0.000839 0.42 AML other m 2023-08-30T16:28:13.28
IV.RAFF.HNN. ML:2.4 0.000338 0.38 AML other m 2023-08-30T16:28:13.32
IV.HVIT.HHN. ML:2.8 0.0006965 0.8 AML other m 2023-08-30T16:28:14.57
IV.HVIT.HHE. ML:2.8 0.000635 0.92 AML other m 2023-08-30T16:28:16.22
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Fault Plane solutions

Fault Plane solutions

The map reports the fault plane solutions for earthquakes in the region from 1977 to the date of this event. Red moment tensors are determined using the Regional Centroid Moment Tensor technique (RCMT, http://www.bo.ingv.it/RCMT) applied for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when a station azimuthal coverage exists RCMTs can be obtained also for earthquakes with magnitude down to 4.0. The gray moment tensors are obtained with the Time Domain Moment Tensor method (TDMT, /tdmt). This technique is applied to earthquakes with magnitude ML greater than 3.2, when it is possible. The size of symbols scales with the calculated moment magnitude Mw.
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