Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 02-09-2021 and time 19:49:06 (Italy) in region 6 km NE Caltagirone (CT)

A magnitude ML 2.1 earthquake occured in region: 6 km NE Caltagirone (CT), on

  • 02-09-2021 17:49:06 (UTC)
  • 02-09-2021 19:49:06 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.2810, 14.5490 at 28 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
Caltagirone CT 6 38686 38686
Mirabella Imbaccari CT 10 4912 43598
Grammichele CT 11 13418 57016
San Michele di Ganzaria CT 11 3245 60261
Mineo CT 13 5159 65420
San Cono CT 16 2697 68117
Ramacca CT 17 10894 79011
Aidone EN 18 4889 83900
Palagonia CT 18 16608 100508
Licodia Eubea CT 19 3081 103589
Piazza Armerina EN 20 21886 125475

Municipalities with at least 50000 inhabitants

An earthquake occurred to
36 Km NE of Gela (75827 inhabitants)
37 Km N of Vittoria (63339 inhabitants)
43 Km NW of Ragusa (73313 inhabitants)
49 Km SE of Caltanissetta (63360 inhabitants)
50 Km NW of Modica (54633 inhabitants)
54 Km SW of Catania (314555 inhabitants)
66 Km SW of Acireale (52622 inhabitants)
70 Km W of Siracusa (122291 inhabitants)
85 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 2.1 2021-09-02
17:49:06		 37.2807 14.5493 28 2022-03-30
13:04:08		 Bollettino Sismico Italiano INGV 96205791
Reviewed
Rev100 		ML 2.1 2021-09-02
17:49:07		 37.2772 14.5572 19 2021-09-02
17:56:59		 Sala Sismica INGV-Roma 94966741
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-02 17:49:06 ± 0.12
Latitude 37.2807 ± 0.0045
Longitude 14.5493 ± 0.0057
Depth (km) 28 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 96205791

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 553
Semi-minor axis of confidence ellipse (meter) 254
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 42
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) 60
Number of associated phases, regardless of their use for origin computation 39
Number of defining phases 39
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.26
Epicentral distance of station closest to the epicenter (degree) 0.16008
Epicentral distance of station farthest from the epicenter (degree) 0.85076
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 23
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 40
Type of magnitude ML
Reference to an origin 96205791
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-01-03 10:50:16

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 40
Type of magnitude ML
Reference to an origin 94966741
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-09-02 17:56:59
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.HPAC.HHZ. 2021-09-02T17:49:30.34 0.6 undecidable manual S 146 76.7676 104 0.36 42
IV.HAVL.HHZ. 2021-09-02T17:49:26.61 0.6 undecidable manual S 125 61.8936 108 0.44 42
IV.HSRS.HHZ. 2021-09-02T17:49:26.48 0.3 undecidable manual S 109 62.9925 108 0.04 69
IV.ISPIC.EHZ. 2021-09-02T17:49:26.92 0.6 undecidable manual S 150 63.6918 108 0.29 44
IV.EMPL.HHZ. 2021-09-02T17:49:25.24 0.6 undecidable manual S 40 57.6978 110 0.14 46
IV.CLTA.HHZ. 2021-09-02T17:49:24.09 0.3 undecidable manual S 255 53.6019 111 0 70
IV.SSY.HHZ. 2021-09-02T17:49:23.36 0.3 undecidable manual S 106 48.3183 114 0.59 62
IV.GALF.HHZ. 2021-09-02T17:49:22.82 0.6 undecidable manual S 2 47.7189 114 0.19 46
IV.MCPD.HHZ. 2021-09-02T17:49:22.59 0.1 undecidable manual P 10 94.4388 101 -0.12 86
IV.MUCR.HHZ. 2021-09-02T17:49:22.15 0.1 positive manual P 19 89.244 102 0.23 85
IV.HMDC.HHZ. 2021-09-02T17:49:21.33 0.6 undecidable manual S 150 41.2254 118 0.26 46
IV.HCRL.HHZ. 2021-09-02T17:49:21.65 0.3 undecidable manual S 89 42.624 117 0.24 69
IV.CSLB.HHZ. 2021-09-02T17:49:20.80 0.6 undecidable manual P 329 84.7485 103 -0.44 41
IV.MSFR.HHZ. 2021-09-02T17:49:20.99 0.1 undecidable manual P 3 83.6496 103 -0.09 88
IV.HPAC.HHZ. 2021-09-02T17:49:19.98 0.1 negative manual P 146 76.7676 104 -0.07 90
IV.HSRS.HHZ. 2021-09-02T17:49:18.20 0.3 undecidable manual P 109 62.9925 108 0.19 67
IV.HVIT.HHZ. 2021-09-02T17:49:18.99 0.3 undecidable manual S 184 32.0457 125 0.01 74
IV.ACATE.EHZ. 2021-09-02T17:49:18.00 0.6 undecidable manual S 189 28.749 129 -0.29 47
IV.HLNI.HHZ. 2021-09-02T17:49:17.98 0.3 undecidable manual S 75 29.4483 128 -0.44 68
IV.CLTA.HHZ. 2021-09-02T17:49:17.08 0.1 positive manual P 255 53.6019 111 0.43 87
IV.ISPIC.EHZ. 2021-09-02T17:49:17.99 0.1 undecidable manual P 150 63.6918 108 -0.13 91
IV.HAVL.HHZ. 2021-09-02T17:49:17.59 0.1 negative manual P 125 61.8936 108 -0.26 89
IV.RAFF.HHZ. 2021-09-02T17:49:17.31 0.6 undecidable manual S 249 17.7711 144 1.08 36
MN.VAE.HHZ. 2021-09-02T17:49:17.55 0.6 undecidable manual S 320 27.1506 131 -0.39 46
IV.EMPL.HHZ. 2021-09-02T17:49:17.55 0.3 undecidable manual P 40 57.6978 110 0.32 66
IV.GALF.HHZ. 2021-09-02T17:49:16.09 0.1 negative manual P 2 47.7189 114 0.28 91
IV.HVZN.HHZ. 2021-09-02T17:49:16.19 0.6 undecidable manual S 128 18.5703 142 -0.17 49
IV.HAGA.HHZ. 2021-09-02T17:49:16.40 0.6 undecidable manual P 89 53.4021 111 -0.22 46
IV.SSY.HHZ. 2021-09-02T17:49:15.77 0.1 negative manual P 106 48.3183 114 -0.12 94
IV.CAGR.HHE. 2021-09-02T17:49:14.63 0.3 undecidable manual P 353 38.1285 120 0.14 71
IV.CPTP.HHZ. 2021-09-02T17:49:14.88 0.6 undecidable manual P 293 36.9297 121 0.55 44
IV.HCRL.HHZ. 2021-09-02T17:49:14.72 0.1 undecidable manual P 89 42.624 117 -0.38 90
IV.HMDC.HHZ. 2021-09-02T17:49:14.68 0.1 negative manual P 150 41.2254 118 -0.23 93
MN.VAE.HHZ. 2021-09-02T17:49:13.20 0.3 undecidable manual P 320 27.1506 131 0.1 73
IV.HVIT.HHZ. 2021-09-02T17:49:13.47 0.1 negative manual P 184 32.0457 125 -0.23 94
IV.HVZN.HHZ. 2021-09-02T17:49:12.10 0.1 negative manual P 128 18.5703 142 -0.08 99
IV.ACATE.EHZ. 2021-09-02T17:49:12.87 0.3 undecidable manual P 189 28.749 129 -0.43 68
IV.RAFF.HHZ. 2021-09-02T17:49:12.08 0.1 positive manual P 249 17.7711 144 -0.03 100
IV.HLNI.HHZ. 2021-09-02T17:49:12.90 0.1 negative manual P 75 29.4483 128 -0.48 90
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RAFF.HHN. ML:1.9 0.0003875 0.26 AML other m 2021-09-02T17:49:17.48
IV.RAFF.HHE. ML:1.5 0.00014235409999999998 0.1024 AML other m 2021-09-02T17:49:17.95
IV.HVZN.HHN. ML:2.2 0.0007775000000000001 0.7 AML other m 2021-09-02T17:49:18.26
IV.HVZN.HNN. ML:2.2 0.0007475 0.7 AML other m 2021-09-02T17:49:18.26
IV.HLNI.HHN. ML:2.1 0.0004305 1.04 AML other m 2021-09-02T17:49:18.35
IV.HVZN.HHE. ML:2.2 0.0006855 0.3 AML other m 2021-09-02T17:49:18.48
IV.HVZN.HNE. ML:2.1 0.0006385000000000001 0.3 AML other m 2021-09-02T17:49:18.48
IV.HLNI.HHE. ML:1.8 0.00022250000000000001 0.48 AML other m 2021-09-02T17:49:18.83
IV.HVIT.HHN. ML:2.6 0.001465 0.28 AML other m 2021-09-02T17:49:19.43
IV.HVIT.HHE. ML:2.2 0.0005655 0.18 AML other m 2021-09-02T17:49:19.75
IV.ACATE.HNN. ML:2.1 0.00046699999999999997 0.72 AML other m 2021-09-02T17:49:20.52
IV.ACATE.EHN. ML:2.4 0.0008305 0.72 AML other m 2021-09-02T17:49:20.52
IV.ACATE.HNE. ML:2.0 0.00035950000000000006 0.76 AML other m 2021-09-02T17:49:20.98
IV.ACATE.EHE. ML:2.2 0.0005800000000000001 0.76 AML other m 2021-09-02T17:49:20.60
IV.HCRL.HHN. ML:2.4 0.0006094999999999999 0.18 AML other m 2021-09-02T17:49:21.73
IV.HMDC.HHE. ML:1.8 0.0001705 0.32 AML other m 2021-09-02T17:49:21.86
IV.HCRL.HHE. ML:2.2 0.0004195 0.74 AML other m 2021-09-02T17:49:22.06
IV.HAGA.HHE. ML:2.3 0.00038 0.32 AML other m 2021-09-02T17:49:24.14
IV.HMDC.HHN. ML:1.8 0.000191 0.62 AML other m 2021-09-02T17:49:24.45
IV.HAGA.HHN. ML:2.2 0.000371 0.48 AML other m 2021-09-02T17:49:24.46
IV.SSY.HHE. ML:2.7 0.0012850000000000001 0.7 AML other m 2021-09-02T17:49:25.36
IV.SSY.HHN. ML:3.0 0.002645 0.26 AML other m 2021-09-02T17:49:25.21
IV.GALF.HHN. ML:2.1 0.0003085 0.42 AML other m 2021-09-02T17:49:26.23
IV.GALF.HHE. ML:2.0 0.0002395 0.46 AML other m 2021-09-02T17:49:26.47
IV.EMPL.HHE. ML:2.7 0.000988 0.32 AML other m 2021-09-02T17:49:27.17
IV.EMPL.HHN. ML:2.8 0.0012850000000000001 0.28 AML other m 2021-09-02T17:49:27.36
IV.HAVL.HHE. ML:2.4 0.0005075 0.3 AML other m 2021-09-02T17:49:27.60
IV.HSRS.HHE. ML:2.2 0.0002495 0.24 AML other m 2021-09-02T17:49:27.54
IV.CLTA.HHE. ML:2.0 0.00018449999999999999 0.64 AML other m 2021-09-02T17:49:27.22
IV.CLTA.HHN. ML:1.6 0.00009209999999999999 0.52 AML other m 2021-09-02T17:49:27.66
IV.ISPIC.EHE. ML:2.1 0.00022 0.98 AML other m 2021-09-02T17:49:27.75
IV.ISPIC.EHN. ML:2.2 0.0002755 1.24 AML other m 2021-09-02T17:49:27.20
IV.HAVL.HHN. ML:2.4 0.00048499999999999997 1.36 AML other m 2021-09-02T17:49:27.21
IV.HSRS.HHN. ML:2.0 0.000174 0.78 AML other m 2021-09-02T17:49:28.40
IV.MUCR.HHE. ML:2.2 0.0001815 0.52 AML other m 2021-09-02T17:49:34.83
IV.MUCR.HHN. ML:2.0 0.00010334999999999999 0.3 AML other m 2021-09-02T17:49:36.22
IV.MCPD.HHE. ML:1.9 0.0000802 0.46 AML other m 2021-09-02T17:49:36.00
IV.CSLB.HHE. ML:1.2 0.0000178 0.32 AML other m 2021-09-02T17:49:38.35
IV.CSLB.HHN. ML:1.2 0.000019 0.36 AML other m 2021-09-02T17:49:38.96
IV.MCPD.HHN. ML:1.7 0.00005125 0.76 AML other m 2021-09-02T17:49:38.55
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