Earthquake with magnitude of ML 2.3 on date 19-03-2021 and time 10:18:35 (Italy) in region Costa Catanese (Catania)

A magnitude ML 2.3 earthquake occured in region: Costa Catanese (Catania), on

  • 19-03-2021 09:18:35 (UTC)
  • 19-03-2021 10:18:35 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.6350, 15.2840 at 3 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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Acireale CT 11 52622 52622
Riposto CT 13 14838 67460
Aci Catena CT 13 29851 97311
Giarre CT 14 27659 124970
Santa Venerina CT 14 8592 133562
Aci Sant'Antonio CT 14 17984 151546
Aci Castello CT 15 18723 170269
Valverde CT 15 7840 178109
Mascali CT 16 14282 192391
Aci Bonaccorsi CT 16 3524 195915
Viagrande CT 17 8563 204478
Zafferana Etnea CT 17 9517 213995
San Gregorio di Catania CT 17 11966 225961
Sant'Alfio CT 17 1582 227543
Milo CT 18 1087 228630
San Giovanni la Punta CT 18 23060 251690
Trecastagni CT 18 10910 262600
Fiumefreddo di Sicilia CT 19 9623 272223
Tremestieri Etneo CT 20 20589 292812
Sant'Agata li Battiati CT 20 9479 302291
Pedara CT 20 14102 316393

Municipalities with at least 50000 inhabitants

An earthquake occurred to
11 Km E of Acireale (52622 inhabitants)
23 Km NE of Catania (314555 inhabitants)
62 Km SW of Reggio di Calabria (183035 inhabitants)
64 Km N of Siracusa (122291 inhabitants)
67 Km SW of Messina (238439 inhabitants)
93 Km NE of Ragusa (73313 inhabitants)
98 Km NE of Modica (54633 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 2.3 2021-03-19
09:18:35
37.6352 15.2838 3 2021-07-12
16:55:14
Bollettino Sismico Italiano INGV 90803421
Reviewed
Rev200
ML 2.6 2021-03-19
09:18:35
37.648 15.24 3 2021-06-04
22:41:45
Sala Operativa INGV_OE (Catania) 88275791
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-03-19 09:18:35 ± 0.17
Latitude 37.6352 ± 0.0054
Longitude 15.2838 ± 0.0114
Depth (km) 3 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 90803421

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 886
Semi-minor axis of confidence ellipse (meter) 599
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 291
Circular confidence region, given by single value of horizontal uncertainty (meter) 890.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 137
Number of associated phases, regardless of their use for origin computation 30
Number of defining phases 30
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.35
Epicentral distance of station closest to the epicenter (degree) 0.08364
Epicentral distance of station farthest from the epicenter (degree) 0.94699
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 21
Magnitudes information

ML:2.3

Field Value
Value 2.3
Uncertainty 0.4
Num. used stations 15
Type of magnitude ML
Reference to an origin 90803421
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-06-04 22:41:21

ML:2.6

Field Value
Value 2.6
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 88275791
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2021-03-19 09:50:45
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.RAFF.HHZ. 2021-03-19T09:19:04.99 0.6 undecidable manual S 241 0.8400 50 0.38 42
IV.HMDC.HHZ. 2021-03-19T09:19:03.45 0.6 undecidable manual S 211 0.7842 50 0.48 41
IV.HAVL.HHZ. 2021-03-19T09:19:00.84 0.6 undecidable manual S 191 0.6871 50 0.74 38
IV.HVZN.HHZ. 2021-03-19T09:18:59.11 0.6 undecidable manual S 225 0.6421 50 0.36 44
IV.SSY.HHZ. 2021-03-19T09:18:55.10 0.6 undecidable manual S 199 0.5054 50 0.39 45
IV.HPAC.HHZ. 2021-03-19T09:18:53.82 0.3 undecidable manual P 192 0.9470 50 -0.28 62
IV.RAFF.HHZ. 2021-03-19T09:18:51.36 0.3 undecidable manual P 241 0.8400 50 -0.91 51
IV.HLNI.HHZ. 2021-03-19T09:18:51.55 0.3 undecidable manual S 229 0.4344 93 -0.62 63
IV.IVPL.HHZ. 2021-03-19T09:18:51.45 0.3 undecidable manual P 342 0.7788 50 0.23 65
IV.SOI.EHE. 2021-03-19T09:18:51.18 0.6 undecidable manual P 54 0.7491 50 0.46 42
IV.HAGA.HHZ. 2021-03-19T09:18:50.04 0.3 undecidable manual S 196 0.3642 94 0.55 66
IV.HMDC.HHZ. 2021-03-19T09:18:50.86 0.3 undecidable manual P 211 0.7842 50 -0.47 62
IV.HAVL.HHZ. 2021-03-19T09:18:49.23 0.3 undecidable manual P 191 0.6871 50 -0.43 64
IV.MSRU.HHE. 2021-03-19T09:18:49.38 0.3 undecidable manual P 16 0.6529 50 0.31 66
IV.HVZN.HHZ. 2021-03-19T09:18:48.51 0.3 undecidable manual P 225 0.6421 50 -0.38 65
IV.MPNC.HHE. 2021-03-19T09:18:46.37 0.3 undecidable manual P 6 0.5135 50 -0.33 68
IV.SSY.HHZ. 2021-03-19T09:18:46.61 0.6 undecidable manual P 199 0.5054 50 0.05 48
IV.MTTG.HHE. 2021-03-19T09:18:45.79 0.6 undecidable manual P 42 0.4928 50 -0.55 43
IV.HCRL.HHZ. 2021-03-19T09:18:44.39 0.3 undecidable manual P 210 0.4047 93 -0.03 74
IV.HLNI.HHZ. 2021-03-19T09:18:44.32 0.6 undecidable manual P 229 0.4344 93 -0.77 40
IV.HAGA.HHZ. 2021-03-19T09:18:43.76 0.3 undecidable manual P 196 0.3642 94 0.22 71
IV.AIO.HHE. 2021-03-19T09:18:43.14 0.3 undecidable manual P 353 0.3381 94 0.19 72
IV.ECTS.HHZ. 2021-03-19T09:18:41.40 0.3 undecidable manual P 332 0.2779 95 -0.23 73
IV.ENIC.HHZ. 2021-03-19T09:18:40.51 0.3 undecidable manual P 269 0.2077 97 0.45 70
IV.EVRN.HNZ. 2021-03-19T09:18:40.16 0.3 undecidable manual S 295 0.1295 101 -0.32 73
IV.EPOZ.HHZ. 2021-03-19T09:18:39.59 0.3 undecidable manual S 296 0.0836 106 0.81 63
IV.EFIU.HHE. 2021-03-19T09:18:39.56 0.3 undecidable manual P 339 0.1646 98 0.44 71
IV.ESAL.HHE. 2021-03-19T09:18:38.93 0.3 undecidable manual P 315 0.1682 98 -0.27 73
IV.EPOZ.HHZ. 2021-03-19T09:18:37.60 0.1 undecidable manual P 296 0.0836 106 0.24 100
IV.EVRN.HNZ. 2021-03-19T09:18:37.97 0.1 negative manual P 295 0.1295 101 -0.37 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.EPOZ.HHN. ML:0.0 0.022459714999999998 1.3408 AML other m 2021-03-19T09:18:39.68
IV.EPOZ.HHE. ML:0.0 0.033424064999999996 0.2752 AML other m 2021-03-19T09:18:39.72
IV.EVRN.HNN. ML:3.5 0.0362 0.16 AML other m 2021-03-19T09:18:40.31
IV.EVRN.HHN. ML:3.5 0.039850000000000003 0.18 AML other m 2021-03-19T09:18:40.31
IV.EVRN.HHE. ML:3.1 0.016366244999999998 0.5408 AML other m 2021-03-19T09:18:40.49
IV.EVRN.HNE. ML:3.3 0.023850000000000003 1.26 AML other m 2021-03-19T09:18:42.84
IV.HAGA.HHN. ML:1.8 0.000249083 1.4592 AML other m 2021-03-19T09:18:50.81
IV.HLNI.HHN. ML:2.0 0.0002705647 0.1632 AML other m 2021-03-19T09:18:51.10
IV.HAGA.HHE. ML:1.9 0.000255141 0.5056 AML other m 2021-03-19T09:18:51.33
IV.HLNI.HHE. ML:2.0 0.00031368665 0.0992 AML other m 2021-03-19T09:18:52.53
IV.HCRL.HHE. ML:2.1 0.00035150000000000003 1.3 AML other m 2021-03-19T09:18:53.82
IV.HCRL.HHN. ML:2.1 0.000348 0.48 AML other m 2021-03-19T09:18:55.80
IV.SSY.HHE. ML:2.3 0.0004884728500000001 0.16 AML other m 2021-03-19T09:18:58.46
IV.HAVL.HHE. ML:2.3 0.00031899999999999995 0.58 AML other m 2021-03-19T09:19:02.17
IV.HMDC.HHE. ML:2.4 0.00028900000000000003 0.6 AML other m 2021-03-19T09:19:05.90
IV.HAVL.HHN. ML:2.3 0.00032599999999999996 1.26 AML other m 2021-03-19T09:19:08.75
IV.HMDC.HHN. ML:2.3 0.00024349999999999998 0.6 AML other m 2021-03-19T09:19:10.76
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, http://terremoti.ingv.it/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