Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 24-04-2020 and time 03:29:11 (Italy) in region 1 km W Grammichele (CT)

A magnitude ML 2.0 earthquake occured in region: 1 km W Grammichele (CT), on

  • 24-04-2020 01:29:11 (UTC)
  • 24-04-2020 03:29:11 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.2180, 14.6210 at 22 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
Grammichele CT 2 13418 13418
Mineo CT 8 5159 18577
Caltagirone CT 10 38686 57263
Licodia Eubea CT 10 3081 60344
Vizzini CT 13 6241 66585
Mazzarrone CT 16 4078 70663
Militello in Val di Catania CT 17 7443 78106
Palagonia CT 17 16608 94714
San Michele di Ganzaria CT 19 3245 97959
Monterosso Almo RG 19 3032 100991
Mirabella Imbaccari CT 20 4912 105903
Ramacca CT 20 10894 116797

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km N of Vittoria (63339 inhabitants)
34 Km N of Ragusa (73313 inhabitants)
37 Km E of Gela (75827 inhabitants)
42 Km N of Modica (54633 inhabitants)
52 Km SW of Catania (314555 inhabitants)
58 Km SE of Caltanissetta (63360 inhabitants)
62 Km W of Siracusa (122291 inhabitants)
65 Km SW of Acireale (52622 inhabitants)
92 Km E of Agrigento (59770 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 2.0 2020-04-24
01:29:11		 37.218 14.6213 22 2020-07-18
21:08:36		 Bollettino Sismico Italiano INGV 78971971
Reviewed
Rev100 		ML 1.9 2020-04-24
01:29:11		 37.2198 14.6177 24 2020-04-24
01:37:43		 Sala Sismica INGV-Roma 78519461
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-04-24 01:29:11 ± 0.14
Latitude 37.2180 ± 0.0081
Longitude 14.6213 ± 0.0056
Depth (km) 22 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 78971971

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 742
Semi-minor axis of confidence ellipse (meter) 521
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 175
Circular confidence region, given by single value of horizontal uncertainty (meter) 740.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 59
Number of associated phases, regardless of their use for origin computation 32
Number of defining phases 32
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.08454
Epicentral distance of station farthest from the epicenter (degree) 0.90472
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:2.0

Field Value
Value 2.0
Uncertainty 0.2
Num. used stations 12
Type of magnitude ML
Reference to an origin 78971971
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-05-09 06:50:11

ML:1.9

Field Value
Value 1.9
Uncertainty 0.2
Num. used stations 13
Type of magnitude ML
Reference to an origin 78519461
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-04-24 01:37:43
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.AIO.HHE. 2020-04-24T01:29:40.56 0.6 undecidable manual S 33 99.3228 97 -0.23 41
IV.MUCR.HHE. 2020-04-24T01:29:39.81 0.6 undecidable manual S 14 94.1391 98 0.39 40
IV.GIB.HHE. 2020-04-24T01:29:29.04 0.3 undecidable manual P 329 100.4217 97 0.42 59
IV.AIO.HHE. 2020-04-24T01:29:28.38 0.6 undecidable manual P 33 99.3228 97 -0.09 42
IV.HAGA.HHZ. 2020-04-24T01:29:27.76 0.3 undecidable manual S 81 47.7189 107 0.48 64
IV.CSLB.HHZ. 2020-04-24T01:29:27.54 0.6 undecidable manual P 328 93.9393 98 -0.1 43
IV.PLLN.EHN. 2020-04-24T01:29:27.87 1.0 undecidable manual P 334 95.6376 98 -0.03 22
IV.MUCR.HHE. 2020-04-24T01:29:27.76 0.1 undecidable manual P 14 94.1391 98 0.09 85
IV.MSFR.HHZ. 2020-04-24T01:29:26.96 0.1 undecidable manual P 358 90.5427 98 -0.16 85
IV.SSY.HHZ. 2020-04-24T01:29:26.06 0.6 undecidable manual S 99 40.5261 111 0.59 42
IV.CPTP.HHZ. 2020-04-24T01:29:26.22 0.6 undecidable manual S 298 45.621 108 -0.53 43
IV.PETRA.HHN. 2020-04-24T01:29:25.91 0.3 undecidable manual P 327 81.5517 99 0.16 64
IT.GEA.HGE. 2020-04-24T01:29:24.15 0.3 undecidable manual S 237 32.5452 117 0.63 63
IT.LNT.HGE. 2020-04-24T01:29:24.03 0.3 undecidable manual S 77 34.5432 115 0.03 72
IV.HPAC.HHE. 2020-04-24T01:29:23.94 0.1 undecidable manual P 147 67.4769 102 0.32 86
IV.CLTA.HHN. 2020-04-24T01:29:22.29 0.1 undecidable manual P 264 58.6968 104 0 93
IV.CPTP.HHZ. 2020-04-24T01:29:21.04 0.1 positive manual P 298 45.621 108 0.68 79
IV.RAFF.HHZ. 2020-04-24T01:29:21.60 0.3 undecidable manual S 271 22.8549 128 0.26 70
IV.GALF.HHZ. 2020-04-24T01:29:21.82 0.1 undecidable manual P 355 54.9006 105 0.09 91
IV.ACATE.EHZ. 2020-04-24T01:29:21.37 0.3 undecidable manual S 206 24.0537 126 -0.22 71
IV.HLNI.HHZ. 2020-04-24T01:29:21.66 0.3 undecidable manual S 57 26.4513 123 -0.45 67
IV.HAGA.HHZ. 2020-04-24T01:29:20.45 0.1 positive manual P 81 47.7189 107 -0.21 90
IV.ESML.HHE. 2020-04-24T01:29:20.47 1.0 undecidable manual P 27 49.9167 107 -0.51 21
IV.HVZN.HHE. 2020-04-24T01:29:19.49 0.3 undecidable manual S 118 9.3795 154 0.45 69
IV.CAGR.HHE. 2020-04-24T01:29:19.99 0.6 undecidable manual P 347 46.1205 108 -0.44 43
IV.SSY.HHZ. 2020-04-24T01:29:19.84 0.1 positive manual P 99 40.5261 111 0.22 92
IT.GEA.HGE. 2020-04-24T01:29:18.15 0.1 undecidable manual P 237 32.5452 117 -0.34 90
IT.LNT.HGE. 2020-04-24T01:29:18.50 0.1 undecidable manual P 77 34.5432 115 -0.27 92
IV.HLNI.HHZ. 2020-04-24T01:29:17.24 0.1 positive manual P 57 26.4513 123 -0.44 90
IV.ACATE.EHZ. 2020-04-24T01:29:17.17 0.1 undecidable manual P 206 24.0537 126 -0.2 94
IV.RAFF.HHZ. 2020-04-24T01:29:16.73 0.1 positive manual P 271 22.8549 128 -0.5 89
IV.HVZN.HHE. 2020-04-24T01:29:15.85 0.1 undecidable manual P 118 9.3795 154 -0.05 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ACATE.EHE. ML:1.7 0.00024139480000000003 0.86 AML other m 2020-04-24T01:29:21.12
IV.RAFF.HHE. ML:2.0 0.00048761225 0.3 AML other m 2020-04-24T01:29:21.93
IV.RAFF.HHN. ML:1.9 0.0004101517 0.24 AML other m 2020-04-24T01:29:21.92
IV.HLNI.HHE. ML:2.2 0.00064889095 0.12 AML other m 2020-04-24T01:29:22.34
IV.ACATE.HNN. ML:1.9 0.00034755954999999997 0.2696 AML other m 2020-04-24T01:29:22.44
IV.HLNI.HHN. ML:2.1 0.00054950045 0.14 AML other m 2020-04-24T01:29:22.34
IV.ACATE.EHN. ML:1.8 0.00026497511500000006 0.16 AML other m 2020-04-24T01:29:22.45
IV.ACATE.HNE. ML:1.8 0.00027627200000000004 0.9496 AML other m 2020-04-24T01:29:23.02
IV.SSY.HHE. ML:2.2 0.00043968125 0.24 AML other m 2020-04-24T01:29:26.94
IV.HAGA.HHE. ML:2.0 0.00024550945000000003 0.2 AML other m 2020-04-24T01:29:28.79
IV.HAGA.HHN. ML:2.1 0.00030417135 0.26 AML other m 2020-04-24T01:29:29.01
IV.SSY.HHN. ML:2.5 0.00089196565 0.12 AML other m 2020-04-24T01:29:29.73
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