Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.3 on date 07-07-2021 and time 12:31:46 (Italy) in region 7 km E Gangi (PA)

A magnitude ML 2.3 earthquake occured in region: 7 km E Gangi (PA), on

  • 07-07-2021 10:31:46 (UTC)
  • 07-07-2021 12:31:46 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.8040, 14.2810 at 68 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
Gangi PA 7 6811 6811
Sperlinga EN 8 805 7616
Castel di Lucio ME 10 1294 8910
Nicosia EN 12 13899 22809
Geraci Siculo PA 13 1945 24754
San Mauro Castelverde PA 15 1701 26455
Petralia Soprana PA 15 3360 29815
Mistretta ME 16 4791 34606
Petralia Sottana PA 17 2821 37427
Bompietro PA 17 1401 38828
Capizzi ME 18 3176 42004
Pettineo ME 18 1350 43354
Blufi PA 19 1029 44383
Alimena PA 19 2032 46415
Reitano ME 20 806 47221
Motta d'Affermo ME 20 739 47960
Cerami EN 20 2006 49966

Municipalities with at least 50000 inhabitants

An earthquake occurred to
40 Km NE of Caltanissetta (63360 inhabitants)
74 Km E of Bagheria (55387 inhabitants)
79 Km W of Catania (314555 inhabitants)
81 Km W of Acireale (52622 inhabitants)
82 Km N of Gela (75827 inhabitants)
82 Km NE of Agrigento (59770 inhabitants)
88 Km E of Palermo (674435 inhabitants)
98 Km N of Vittoria (63339 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 2.3 2021-07-07
10:31:46		 37.8043 14.2808 69 2021-12-29
11:12:19		 Bollettino Sismico Italiano INGV 93910921
Reviewed
Rev100 		ML 2.2 2021-07-07
10:31:46		 37.7993 14.2393 64 2021-07-07
10:43:56		 Sala Sismica INGV-Roma 92352701
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-07-07 10:31:46 ± 0.3
Latitude 37.8043 ± 0.0135
Longitude 14.2808 ± 0.0182
Depth (km) 69 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 93910921

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1703
Semi-minor axis of confidence ellipse (meter) 810
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 46
Circular confidence region, given by single value of horizontal uncertainty (meter) 1700.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 69
Number of associated phases, regardless of their use for origin computation 40
Number of defining phases 40
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.48
Epicentral distance of station closest to the epicenter (degree) 0.21764
Epicentral distance of station farthest from the epicenter (degree) 1.07649
Number of stations at which the event was observed 25
Number of stations from which data was used for origin computation 25
Magnitudes information

ML:2.2

Field Value
Value 2.2
Uncertainty 0.3
Num. used stations 40
Type of magnitude ML
Reference to an origin 92352701
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-07-07 10:43:56

ML:2.3

Field Value
Value 2.3
Uncertainty 0.4
Num. used stations 31
Type of magnitude ML
Reference to an origin 93910921
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-09-12 07:51:25
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.HAVL.HHZ. 2021-07-07T10:32:20.95 0.6 undecidable manual S 141 119.4915 111 0.32 40
IV.HMDC.HHZ. 2021-07-07T10:32:17.14 0.6 undecidable manual S 155 103.7184 114 -0.34 40
IV.SSY.HHZ. 2021-07-07T10:32:16.76 0.3 undecidable manual S 136 100.122 115 -0.02 65
IV.HAGA.HHZ. 2021-07-07T10:32:15.35 0.3 undecidable manual S 127 96.0261 117 -0.65 56
IV.HVIT.HHZ. 2021-07-07T10:32:15.11 0.6 undecidable manual S 167 92.5407 118 -0.21 42
IV.HCRL.HHZ. 2021-07-07T10:32:13.80 0.3 undecidable manual S 131 87.8454 119 -0.63 58
IV.MUCR.HHZ. 2021-07-07T10:32:10.42 0.6 undecidable manual S 63 58.2972 133 1.16 30
IV.HLNI.HHZ. 2021-07-07T10:32:10.20 0.6 undecidable manual S 134 72.4719 126 -1.44 27
IV.ALJA.HHZ. 2021-07-07T10:32:08.62 0.6 undecidable manual S 263 46.62 140 1.09 32
IV.RESU.HHZ. 2021-07-07T10:32:06.20 0.6 undecidable manual S 228 26.2515 156 1.02 34
IV.HAVL.HHZ. 2021-07-07T10:32:05.92 0.6 undecidable manual P 141 119.4915 111 -0.24 39
IV.MSFR.HHZ. 2021-07-07T10:32:05.95 0.6 undecidable manual S 47 37.2294 147 -0.37 48
IV.GALF.HHZ. 2021-07-07T10:32:05.63 0.6 undecidable manual S 112 27.1506 155 0.37 44
IV.HMDC.HHZ. 2021-07-07T10:32:04.16 0.6 undecidable manual P 155 103.7184 114 -0.18 41
IV.PLLN.EHZ. 2021-07-07T10:32:04.18 0.6 undecidable manual S 330 24.1536 157 -0.81 44
IV.GIB.HHZ. 2021-07-07T10:32:04.55 0.6 undecidable manual S 313 30.3474 152 -1.02 39
IV.HAGA.HHZ. 2021-07-07T10:32:03.27 0.3 undecidable manual P 127 96.0261 117 -0.22 62
IV.SSY.HHZ. 2021-07-07T10:32:03.97 0.3 undecidable manual P 136 100.122 115 0.03 65
IV.ILOS.HHZ. 2021-07-07T10:32:03.24 0.1 positive manual P 39 91.9413 118 0.21 86
IV.CSLB.HHZ. 2021-07-07T10:32:03.56 0.6 undecidable manual S 307 24.4533 157 -1.47 32
IV.HCRL.HHZ. 2021-07-07T10:32:02.25 0.3 undecidable manual P 131 87.8454 119 -0.33 62
IV.HVIT.HHZ. 2021-07-07T10:32:02.88 0.6 undecidable manual P 167 92.5407 118 -0.21 42
IV.CLTA.HHZ. 2021-07-07T10:32:02.25 0.3 undecidable manual P 201 76.9674 124 0.82 56
IV.IVPL.HHZ. 2021-07-07T10:32:02.41 0.3 undecidable manual P 44 88.0452 119 -0.19 64
IV.CMDO.HHZ. 2021-07-07T10:32:00.49 0.6 undecidable manual P 227 55.2003 135 1.17 33
IV.RAFF.HHZ. 2021-07-07T10:32:00.26 0.1 positive manual P 174 64.8906 129 0.04 94
IV.EPZF.HHZ. 2021-07-07T10:32:00.29 0.3 undecidable manual P 87 50.5161 137 1.37 44
IV.MUCR.HHZ. 2021-07-07T10:32:00.38 0.1 undecidable manual P 63 58.2972 133 0.78 77
IV.HLNI.HHZ. 2021-07-07T10:32:00.53 0.3 undecidable manual P 134 72.4719 126 -0.44 63
IV.CPTP.HHZ. 2021-07-07T10:31:59.81 0.3 undecidable manual P 193 45.2214 141 1.33 46
IV.MCPD.HHZ. 2021-07-07T10:31:59.48 0.3 undecidable manual P 48 52.7028 136 0.38 67
IV.SOLUN.HHZ. 2021-07-07T10:31:59.62 0.6 undecidable manual P 296 72.7716 125 -1.38 27
IV.ALJA.HHZ. 2021-07-07T10:31:58.72 0.3 undecidable manual P 263 46.62 140 0.12 71
IV.MSFR.HHZ. 2021-07-07T10:31:58.05 0.1 undecidable manual P 47 37.2294 147 0.15 95
IV.GALF.HHZ. 2021-07-07T10:31:57.22 0.1 undecidable manual P 112 27.1506 155 -0.06 100
IV.CAGR.HHZ. 2021-07-07T10:31:57.88 0.3 undecidable manual P 136 27.9498 154 0.56 66
IV.RESU.HHZ. 2021-07-07T10:31:57.62 0.6 undecidable manual P 228 26.2515 156 0.38 46
IV.PLLN.EHZ. 2021-07-07T10:31:56.68 0.1 positive manual P 330 24.1536 157 -0.45 93
IV.GIB.HHZ. 2021-07-07T10:31:56.99 0.3 undecidable manual P 313 30.3474 152 -0.47 68
IV.CSLB.HHZ. 2021-07-07T10:31:56.46 0.1 positive manual P 307 24.4533 157 -0.69 86
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CSLB.HHE. ML:1.9 0.000132 0.72 AML other m 2021-07-07T10:32:04.11
IV.CSLB.HHN. ML:1.9 0.000131 0.42 AML other m 2021-07-07T10:32:04.37
IV.PLLN.EHE. ML:2.2 0.00027949999999999996 1.36 AML other m 2021-07-07T10:32:04.83
IV.PLLN.EHN. ML:2.3 0.00030500000000000004 0.48 AML other m 2021-07-07T10:32:04.75
IV.GIB.HHN. ML:2.2 0.00024397655000000002 0.4608 AML other m 2021-07-07T10:32:06.57
IV.GALF.HHE. ML:2.5 0.0005539005 0.6784 AML other m 2021-07-07T10:32:06.36
IV.MSFR.HHN. ML:1.7 0.0000715 1.7 AML other m 2021-07-07T10:32:06.89
IV.GALF.HHN. ML:2.5 0.00045850000000000003 0.36 AML other m 2021-07-07T10:32:06.77
IV.ILOS.HNN. ML:2.8 0.0005705982499999999 0.64 AML other m 2021-07-07T10:32:07.00
IV.ILOS.HHN. ML:2.9 0.00060759775 0.6592 AML other m 2021-07-07T10:32:07.02
IV.MSFR.HHE. ML:1.6 0.000057405295 0.2816 AML other m 2021-07-07T10:32:06.90
IV.GIB.HHE. ML:2.2 0.000247 1.32 AML other m 2021-07-07T10:32:08.79
IV.ALJA.HHE. ML:1.8 0.00008829999999999999 0.3 AML other m 2021-07-07T10:32:10.74
IV.RAFF.HHE. ML:1.8 0.00007185353999999999 0.32 AML other m 2021-07-07T10:32:11.49
IV.MUCR.HHN. ML:2.5 0.000373 0.74 AML other m 2021-07-07T10:32:11.88
IV.RAFF.HHN. ML:1.9 0.000086494125 0.2432 AML other m 2021-07-07T10:32:11.80
IV.EMPL.HHE. ML:2.5 0.0003292151 0.1984 AML other m 2021-07-07T10:32:12.15
IV.ALJA.HHN. ML:1.8 0.00009185 0.4 AML other m 2021-07-07T10:32:12.88
IV.HLNI.HHE. ML:2.1 0.00012599450000000002 0.0768 AML other m 2021-07-07T10:32:12.81
IV.EMPL.HHN. ML:2.6 0.00046857905 0.224 AML other m 2021-07-07T10:32:13.15
IV.HLNI.HHN. ML:2.1 0.0001295 0.14 AML other m 2021-07-07T10:32:13.12
IV.HCRL.HHN. ML:2.8 0.0004685 0.1 AML other m 2021-07-07T10:32:14.64
IV.HCRL.HHE. ML:2.8 0.0004815 0.12 AML other m 2021-07-07T10:32:14.66
IV.HAGA.HHE. ML:2.6 0.0002837173 0.16 AML other m 2021-07-07T10:32:15.60
IV.CLTA.HHN. ML:1.9 0.000081644885 0.1984 AML other m 2021-07-07T10:32:15.88
IV.IVPL.HHN. ML:2.1 0.000101990595 0.2176 AML other m 2021-07-07T10:32:16.35
IV.CLTA.HHE. ML:1.8 0.00006611644999999999 0.48 AML other m 2021-07-07T10:32:16.85
IV.SSY.HHE. ML:2.9 0.00059947005 0.1664 AML other m 2021-07-07T10:32:17.34
IV.ILOS.HNE. ML:2.8 0.0004896519499999999 0.6208 AML other m 2021-07-07T10:32:17.45
IV.ILOS.HHE. ML:2.8 0.0005306197499999999 0.6016 AML other m 2021-07-07T10:32:17.46
IV.SSY.HHN. ML:3.2 0.0012200000000000002 0.14 AML other m 2021-07-07T10:32:17.39
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