Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.2 on date 03-02-2021 and time 21:12:14 (UTC) in region 5 km W Grammichele (CT)

A magnitude ML 2.2 earthquake occured in region: 5 km W Grammichele (CT), on

  • 03-02-2021 21:12:14 (UTC)
  • 03-02-2021 22:12:14 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.2050, 14.5840 at 26 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 5 13418 13418
Caltagirone CT 7 38686 52104
Mineo CT 12 5159 57263
Licodia Eubea CT 12 3081 60344
Mazzarrone CT 14 4078 64422
Vizzini CT 15 6241 70663
San Michele di Ganzaria CT 16 3245 73908
Mirabella Imbaccari CT 18 4912 78820
Niscemi CL 19 27558 106378
Palagonia CT 20 16608 122986

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km N of Vittoria (63339 inhabitants)
33 Km NE of Gela (75827 inhabitants)
34 Km NW of Ragusa (73313 inhabitants)
42 Km NW of Modica (54633 inhabitants)
56 Km SW of Catania (314555 inhabitants)
56 Km SE of Caltanissetta (63360 inhabitants)
65 Km W of Siracusa (122291 inhabitants)
69 Km SW of Acireale (52622 inhabitants)
89 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 2.2 2021-02-03
21:12:14		 37.2053 14.5837 26 2021-07-12
16:55:10		 Bollettino Sismico Italiano INGV 89960221
Reviewed
Rev100 		ML 2.2 2021-02-03
21:12:14		 37.2288 14.5542 28 2021-02-03
21:22:46		 Sala Sismica INGV-Roma 86818441
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-02-03 21:12:14 ± 0.17
Latitude 37.2053 ± 0.0063
Longitude 14.5837 ± 0.0079
Depth (km) 26 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 89960221

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 698
Semi-minor axis of confidence ellipse (meter) 139
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 59
Circular confidence region, given by single value of horizontal uncertainty (meter) 700.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 76
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) 0.36
Epicentral distance of station closest to the epicenter (degree) 0.10792
Epicentral distance of station farthest from the epicenter (degree) 0.86785
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 17
Magnitudes information

ML:2.2

Field Value
Value 2.2
Uncertainty 0.3
Num. used stations 32
Type of magnitude ML
Reference to an origin 89960221
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-05-17 03:10:15

ML:2.2

Field Value
Value 2.2
Uncertainty 0.2
Num. used stations 30
Type of magnitude ML
Reference to an origin 86818441
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-02-03 21:22:46
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MUCR.HHZ. 2021-02-03T21:12:44.10 0.6 undecidable manual S 15 96.3258 100 0.68 40
IV.HPAC.HHZ. 2021-02-03T21:12:36.76 0.3 undecidable manual S 144 68.1762 105 0.68 58
IV.HAVL.HHZ. 2021-02-03T21:12:33.31 0.3 undecidable manual S 120 54.9006 109 0.64 62
IV.HAGA.HHZ. 2021-02-03T21:12:31.80 0.6 undecidable manual S 80 51.2154 110 0.05 49
IV.MUCR.HHZ. 2021-02-03T21:12:31.98 0.3 undecidable manual P 15 96.3258 100 0.61 60
IV.SSY.HHZ. 2021-02-03T21:12:30.66 0.3 undecidable manual S 97 43.623 114 0.79 60
IV.CROCE.HHZ. 2021-02-03T21:12:29.20 0.6 undecidable manual S 186 41.625 115 -0.17 49
IV.PETRA.HHZ. 2021-02-03T21:12:29.21 0.3 undecidable manual P 330 80.9523 102 0.17 68
IV.HCRL.HHZ. 2021-02-03T21:12:29.50 0.6 undecidable manual S 78 40.5261 116 0.37 47
IT.LNT.HGZ. 2021-02-03T21:12:28.59 0.3 undecidable manual S 76 38.0286 118 0.05 76
IV.HPAC.HHZ. 2021-02-03T21:12:27.15 0.1 negative manual P 144 68.1762 105 0.02 95
IV.HMDC.HHZ. 2021-02-03T21:12:27.62 0.3 undecidable manual S 147 32.5452 122 0.36 70
IV.RESU.HHZ. 2021-02-03T21:12:27.84 0.3 undecidable manual P 317 67.4769 105 0.82 58
IV.HLNI.HHZ. 2021-02-03T21:12:26.22 0.3 undecidable manual S 58 29.9478 125 -0.47 68
IV.HAVL.HHZ. 2021-02-03T21:12:24.98 0.1 negative manual P 120 54.9006 109 -0.19 95
IV.RAFF.HHZ. 2021-02-03T21:12:24.80 0.3 undecidable manual S 276 19.6692 138 0.18 76
IV.CPTP.HHZ. 2021-02-03T21:12:24.07 0.3 undecidable manual P 301 43.4232 114 0.56 67
IV.ACATE.EHZ. 2021-02-03T21:12:24.96 0.3 undecidable manual S 200 21.4674 136 0.02 77
IV.HAGA.HHZ. 2021-02-03T21:12:24.16 0.3 undecidable manual P 80 51.2154 110 -0.47 67
IV.SSY.HHZ. 2021-02-03T21:12:23.54 0.1 negative manual P 97 43.623 114 -0.01 100
IV.CAGR.HHE. 2021-02-03T21:12:23.79 0.3 undecidable manual P 351 46.8198 112 -0.21 71
IV.HVZN.HNZ. 2021-02-03T21:12:23.75 0.6 undecidable manual S 104 11.9769 152 0.3 50
IV.HCRL.HHZ. 2021-02-03T21:12:22.81 0.1 negative manual P 78 40.5261 116 -0.31 94
IT.LNT.HGZ. 2021-02-03T21:12:22.42 0.3 undecidable manual P 76 38.0286 118 -0.35 70
IV.CROCE.HHZ. 2021-02-03T21:12:22.82 0.3 undecidable manual P 186 41.625 115 -0.44 70
IV.HLNI.HHZ. 2021-02-03T21:12:21.14 0.1 undecidable manual P 58 29.9478 125 -0.57 89
IV.HMDC.HHZ. 2021-02-03T21:12:21.82 0.1 negative manual P 147 32.5452 122 -0.22 99
IV.ACATE.EHZ. 2021-02-03T21:12:20.40 0.3 undecidable manual P 200 21.4674 136 -0.3 74
IV.HVZN.HNZ. 2021-02-03T21:12:19.55 0.1 undecidable manual P 104 11.9769 152 -0.29 100
IV.RAFF.HHZ. 2021-02-03T21:12:19.97 0.1 undecidable manual P 276 19.6692 138 -0.54 92
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.HVZN.HHN. ML:2.3 0.00108 1.26 AML other m 2021-02-03T21:12:23.98
IV.ACATE.HNE. ML:2.3 0.0008805000000000001 0.46 AML other m 2021-02-03T21:12:25.39
IV.RAFF.HHE. ML:2.2 0.0007386896 0.3072 AML other m 2021-02-03T21:12:25.18
IV.RAFF.HHN. ML:2.2 0.00082028345 0.2816 AML other m 2021-02-03T21:12:25.20
IV.ACATE.EHN. ML:2.2 0.00069086015 0.1792 AML other m 2021-02-03T21:12:25.64
IV.ACATE.HNN. ML:2.2 0.0007035 0.16 AML other m 2021-02-03T21:12:25.64
IV.HLNI.HHN. ML:2.6 0.001442418 0.1408 AML other m 2021-02-03T21:12:26.44
IV.HLNI.HHE. ML:2.4 0.00100663685 0.1152 AML other m 2021-02-03T21:12:26.71
IV.ACATE.EHE. ML:2.2 0.00082823525 0.2688 AML other m 2021-02-03T21:12:26.79
IV.HVZN.HNN. ML:2.3 0.0010500000000000002 1.48 AML other m 2021-02-03T21:12:26.21
IV.HMDC.HHN. ML:2.1 0.0004341114 0.128 AML other m 2021-02-03T21:12:27.84
IV.HMDC.HNE. ML:1.9 0.0002915 1.4 AML other m 2021-02-03T21:12:27.94
IV.HMDC.HHE. ML:2.1 0.000424 1.4 AML other m 2021-02-03T21:12:27.24
IV.HMDC.HNN. ML:2.1 0.00040165044999999997 0.2048 AML other m 2021-02-03T21:12:27.85
IV.HVZN.HHE. ML:2.2 0.0008675749500000001 0.3328 AML other m 2021-02-03T21:12:28.20
IV.HVZN.HNE. ML:2.2 0.0008251024 0.3328 AML other m 2021-02-03T21:12:28.20
IV.CROCE.HNN. ML:2.0 0.0002632849 0.2304 AML other m 2021-02-03T21:12:29.54
IV.CROCE.HHN. ML:1.9 0.00022383815000000002 0.2304 AML other m 2021-02-03T21:12:29.54
IV.CROCE.HHE. ML:2.0 0.00025643899999999996 0.2048 AML other m 2021-02-03T21:12:29.61
IV.CROCE.HNE. ML:2.0 0.00031096009999999997 0.1792 AML other m 2021-02-03T21:12:29.52
IV.HCRL.HHN. ML:2.8 0.0018919845 0.1664 AML other m 2021-02-03T21:12:29.73
IV.HCRL.HHE. ML:2.4 0.00082959085 0.1792 AML other m 2021-02-03T21:12:29.75
IV.SSY.HHE. ML:2.9 0.002060561 0.1536 AML other m 2021-02-03T21:12:30.81
IV.SSY.HHN. ML:3.0 0.00242 0.6 AML other m 2021-02-03T21:12:32.56
IV.HAGA.HHN. ML:2.0 0.000229 0.06 AML other m 2021-02-03T21:12:33.50
IV.HAVL.HHE. ML:2.4 0.000543568 0.2304 AML other m 2021-02-03T21:12:34.37
IV.HAGA.HHE. ML:2.0 0.00021050000000000002 1.14 AML other m 2021-02-03T21:12:34.96
IV.CPTP.HHE. ML:1.8 0.00018449999999999999 0.84 AML other m 2021-02-03T21:12:35.42
IV.HAVL.HHN. ML:2.6 0.0008215 0.78 AML other m 2021-02-03T21:12:35.83
IV.HPAC.HHN. ML:2.6 0.00063437765 0.3328 AML other m 2021-02-03T21:12:37.77
IV.HPAC.HHE. ML:2.5 0.0004860721 0.1408 AML other m 2021-02-03T21:12:39.26
IV.CPTP.HHN. ML:1.7 0.00011949999999999999 0.9 AML other m 2021-02-03T21:12:39.29
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