Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.6 on date 20-09-2019 and time 19:31:19 (UTC) in region 1 km NW Gangi (PA)

A magnitude ML 2.6 earthquake occured in region: 1 km NW Gangi (PA), on

  • 20-09-2019 19:31:19 (UTC)
  • 20-09-2019 21:31:19 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.8030, 14.2020 at 7 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 1 6811 6811
Geraci Siculo PA 8 1945 8756
Petralia Soprana PA 8 3360 12116
Petralia Sottana PA 10 2821 14937
Bompietro PA 11 1401 16338
Blufi PA 12 1029 17367
San Mauro Castelverde PA 13 1701 19068
Castel di Lucio ME 14 1294 20362
Sperlinga EN 14 805 21167
Castellana Sicula PA 14 3411 24578
Alimena PA 14 2032 26610
Polizzi Generosa PA 18 3407 30017
Castelbuono PA 18 8943 38960
Nicosia EN 18 13899 52859
Pettineo ME 20 1350 54209

Municipalities with at least 50000 inhabitants

An earthquake occurred to
37 Km NE of Caltanissetta (63360 inhabitants)
68 Km E of Bagheria (55387 inhabitants)
77 Km NE of Agrigento (59770 inhabitants)
81 Km E of Palermo (674435 inhabitants)
82 Km N of Gela (75827 inhabitants)
85 Km W of Catania (314555 inhabitants)
88 Km W of Acireale (52622 inhabitants)
99 Km N of Vittoria (63339 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 2.6 2019-09-20
19:31:19		 37.8032 14.2017 7 2020-02-28
16:42:08		 Bollettino Sismico Italiano INGV 73963961
Reviewed
Rev100 		ML 2.6 2019-09-20
19:31:19		 37.7937 14.2008 9 2019-09-20
19:46:43		 Sala Sismica INGV-Roma 72594271
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-09-20 19:31:19 ± 0.07
Latitude 37.8032 ± 0.0045
Longitude 14.2017 ± 0.0068
Depth (km) 7 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 73963961

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 495
Semi-minor axis of confidence ellipse (meter) 492
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 22
Circular confidence region, given by single value of horizontal uncertainty (meter) 490.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 32
Number of associated phases, regardless of their use for origin computation 61
Number of defining phases 61
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.25
Epicentral distance of station closest to the epicenter (degree) 0.07464
Epicentral distance of station farthest from the epicenter (degree) 1.40834
Number of stations at which the event was observed 47
Number of stations from which data was used for origin computation 47
Magnitudes information

ML:2.6

Field Value
Value 2.6
Uncertainty 0.3
Num. used stations 54
Type of magnitude ML
Reference to an origin 73963961
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-01-14 16:41:19

ML:2.6

Field Value
Value 2.6
Uncertainty 0.3
Num. used stations 54
Type of magnitude ML
Reference to an origin 72594271
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-09-20 19:46:42
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.CRJA.HHZ. 2019-09-20T19:31:52.80 1.0 undecidable manual S 270 104.9172 50 1.99 0
IV.IVPL.HHZ. 2019-09-20T19:31:48.90 1.0 undecidable manual S 47 93.0402 50 1.26 0
IV.AIO.HHZ. 2019-09-20T19:31:47.80 1.0 undecidable manual S 78 92.241 50 0.39 0
MN.CEL.HHZ. 2019-09-20T19:31:45.86 0.3 undecidable manual P 71 156.3213 50 0.39 0
IV.MTTG.HHE. 2019-09-20T19:31:42.71 0.6 undecidable manual P 80 132.9669 50 0.83 0
IV.HPAC.HHE. 2019-09-20T19:31:42.86 0.6 undecidable manual P 148 142.0467 50 -0.42 0
IV.ISPIC.EHZ. 2019-09-20T19:31:41.49 0.6 undecidable manual P 151 129.2706 50 0.19 0
IV.RAFF.HHZ. 2019-09-20T19:31:41.20 1.0 undecidable manual S 168 65.9895 50 0.8 5
IV.MSRU.HHZ. 2019-09-20T19:31:40.87 0.6 undecidable manual P 65 125.0859 50 0.21 0
IV.MUCR.HHZ. 2019-09-20T19:31:40.60 1.0 undecidable manual S 65 64.5909 50 0.57 7
IV.MMGO.HHN. 2019-09-20T19:31:39.40 0.6 undecidable manual P 262 108.6135 50 1.28 0
IV.CRJA.HHZ. 2019-09-20T19:31:39.02 0.3 undecidable manual P 270 104.9172 50 1.47 0
IV.MBFT.HHN. 2019-09-20T19:31:38.64 1.0 undecidable manual P 279 110.4006 50 0.24 0
IV.AGST.EHE. 2019-09-20T19:31:38.35 0.3 undecidable manual P 124 108.7134 50 0.22 0
IV.CROCE.HHE. 2019-09-20T19:31:38.31 0.6 undecidable manual P 165 111.5994 50 -0.26 0
IV.MPNC.HHZ. 2019-09-20T19:31:38.25 0.6 undecidable manual P 69 107.6145 50 0.28 0
IV.EPZF.HHZ. 2019-09-20T19:31:38.90 1.0 undecidable manual S 87 57.498 50 0.76 12
IV.SSY.HHZ. 2019-09-20T19:31:37.86 0.6 undecidable manual P 133 105.0171 50 0.3 0
MN.CLTB.HHN. 2019-09-20T19:31:37.32 0.6 undecidable manual P 254 90.0432 50 2.06 0
IV.ILLI.HHZ. 2019-09-20T19:31:37.08 0.3 undecidable manual P 42 96.5256 50 0.82 0
IV.HAGA.HHZ. 2019-09-20T19:31:37.45 0.6 undecidable manual P 124 101.6205 50 0.41 0
IV.AIO.HHZ. 2019-09-20T19:31:36.10 0.3 undecidable manual P 78 92.241 50 0.51 0
IV.IVPL.HHZ. 2019-09-20T19:31:36.16 0.6 undecidable manual P 47 93.0402 50 0.44 0
IV.IVGP.HHN. 2019-09-20T19:31:36.10 0.6 undecidable manual P 45 93.4398 50 0.32 0
IV.IFIL.HHN. 2019-09-20T19:31:35.67 0.6 undecidable manual P 21 90.4428 50 0.35 0
IV.ACATE.HNE. 2019-09-20T19:31:35.01 0.6 undecidable manual P 163 90.3429 50 -0.3 0
IV.IACL.HHE. 2019-09-20T19:31:34.37 0.6 undecidable manual P 9 82.0512 50 0.34 0
IV.NOV.HHZ. 2019-09-20T19:31:34.84 0.3 undecidable manual P 73 85.5477 50 0.28 0
IV.HVZN.HNZ. 2019-09-20T19:31:34.29 0.6 undecidable manual P 147 82.7505 50 0.15 0
IV.MNO.SHZ. 2019-09-20T19:31:34.40 1.0 undecidable manual S 72 45.5211 50 -0.54 22
IV.ENIC.HHZ. 2019-09-20T19:31:34.95 1.0 undecidable manual P 105 74.4699 50 2.1 0
IV.MSFR.HHZ. 2019-09-20T19:31:34.60 0.6 undecidable manual S 53 42.624 50 0.41 46
IV.CORL.HHZ. 2019-09-20T19:31:33.49 0.6 undecidable manual P 278 79.2651 50 -0.11 0
IV.HLNI.HHE. 2019-09-20T19:31:33.54 0.6 undecidable manual P 130 77.5668 50 0.2 0
IV.EMSG.HHZ. 2019-09-20T19:31:33.37 0.6 undecidable manual P 88 65.5899 50 1.88 6
IV.CLTA.HHZ. 2019-09-20T19:31:33.48 0.3 undecidable manual P 196 74.5698 50 0.6 3
IV.EPIT.HHN. 2019-09-20T19:31:32.95 1.0 undecidable manual P 89 74.9694 50 0.02 1
IV.RAFF.HHZ. 2019-09-20T19:31:31.61 0.3 undecidable manual P 168 65.9895 50 0.07 20
IV.EPZF.HHZ. 2019-09-20T19:31:31.32 0.3 undecidable manual P 87 57.498 50 1.08 32
IV.MUCR.HHZ. 2019-09-20T19:31:31.05 0.6 undecidable manual P 65 64.5909 50 -0.28 15
IV.SOLUN.HHZ. 2019-09-20T19:31:31.28 1.0 undecidable manual P 299 66.6777 50 -0.38 6
IV.ESML.HHE. 2019-09-20T19:31:30.73 1.0 undecidable manual P 109 62.8926 50 -0.35 9
IV.CMDO.HHZ. 2019-09-20T19:31:30.93 1.0 undecidable manual P 222 50.2164 50 1.81 10
IV.GALF.HHZ. 2019-09-20T19:31:30.90 1.0 undecidable manual S 108 33.6441 102 -0.45 23
IV.GIB.HHZ. 2019-09-20T19:31:29.30 0.3 undecidable manual S 324 25.8519 105 0.58 67
IV.CPTP.HHZ. 2019-09-20T19:31:29.56 1.0 undecidable manual P 184 44.0226 50 1.4 15
MN.VAE.HHZ. 2019-09-20T19:31:28.24 1.0 undecidable manual P 160 39.4272 50 0.79 20
IV.MNO.SHZ. 2019-09-20T19:31:28.07 0.3 undecidable manual P 72 45.5211 50 -0.32 68
IV.MSFR.HHZ. 2019-09-20T19:31:27.55 0.3 undecidable manual P 53 42.624 50 -0.41 70
IV.PLLN.EHZ. 2019-09-20T19:31:27.50 0.6 undecidable manual S 346 21.6672 108 0.17 49
IV.CSLB.HHZ. 2019-09-20T19:31:27.00 0.3 undecidable manual S 320 19.4694 110 0.37 71
IV.RESU.HHZ. 2019-09-20T19:31:27.71 0.6 undecidable manual S 216 21.4674 108 0.43 47
IV.CAGR.HHE. 2019-09-20T19:31:26.63 0.6 undecidable manual P 127 33.0447 102 0.44 47
IV.ALJA.HHZ. 2019-09-20T19:31:26.95 0.3 undecidable manual P 261 39.7269 50 -0.55 69
IV.GALF.HHZ. 2019-09-20T19:31:26.20 0.3 undecidable manual P 108 33.6441 102 -0.11 74
IV.GIB.HHZ. 2019-09-20T19:31:24.28 0.1 positive manual P 324 25.8519 105 -0.51 91
IV.CSLB.HHZ. 2019-09-20T19:31:23.15 0.1 positive manual P 320 19.4694 110 -0.44 93
IV.PETRA.HHZ. 2019-09-20T19:31:23.94 0.6 undecidable manual S 294 8.2806 130 0.73 42
IV.PLLN.EHZ. 2019-09-20T19:31:23.89 0.1 positive manual P 346 21.6672 108 -0.1 100
IV.RESU.HHZ. 2019-09-20T19:31:23.38 0.1 positive manual P 216 21.4674 108 -0.58 89
IV.PETRA.HHZ. 2019-09-20T19:31:21.53 0.1 positive manual P 294 8.2806 130 -0.08 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.PETRA.HHE. ML:2.8 0.011455 0.86 AML other m 2019-09-20T19:31:24.51
IV.PETRA.HHN. ML:2.9 0.013600000000000001 0.34 AML other m 2019-09-20T19:31:24.53
IV.CSLB.HHE. ML:2.2 0.00123 0.46 AML other m 2019-09-20T19:31:28.83
IV.CSLB.HHN. ML:2.1 0.00102752325 0.3456 AML other m 2019-09-20T19:31:28.94
IV.PLLN.EHE. ML:2.5 0.0023200000000000004 0.56 AML other m 2019-09-20T19:31:31.97
IV.GIB.HHN. ML:2.6 0.00235 0.44 AML other m 2019-09-20T19:31:32.86
IV.GIB.HHE. ML:2.6 0.0026007315000000004 0.8064 AML other m 2019-09-20T19:31:33.24
IV.RESU.HHN. ML:2.9 0.0058200000000000005 0.66 AML other m 2019-09-20T19:31:33.46
IV.PLLN.EHN. ML:2.6 0.00287 1.04 AML other m 2019-09-20T19:31:34.08
IV.RESU.HHE. ML:2.8 0.0049250000000000006 0.48 AML other m 2019-09-20T19:31:35.13
IV.MSFR.HHE. ML:2.1 0.0004485 1.34 AML other m 2019-09-20T19:31:36.20
IV.GALF.HNE. ML:1.9 0.00038025129999999996 0.4864 AML other m 2019-09-20T19:31:36.61
IV.GALF.HNN. ML:2.1 0.00054683905 0.384 AML other m 2019-09-20T19:31:37.77
IV.GALF.HHN. ML:3.0 0.003975 0.34 AML other m 2019-09-20T19:31:37.76
IV.GALF.HHE. ML:3.0 0.003995 1.32 AML other m 2019-09-20T19:31:38.73
IV.MSFR.HHN. ML:2.2 0.0005365 0.64 AML other m 2019-09-20T19:31:40.40
IV.MNO.SHE. ML:0.0 0.0011949999999999999 0.68 AML other m 2019-09-20T19:31:40.74
IV.MNO.SHN. ML:0.0 0.00109 0.56 AML other m 2019-09-20T19:31:40.52
IV.SOLUN.HHE. ML:3.0 0.001835 0.94 AML other m 2019-09-20T19:31:45.12
IV.SOLUN.HHN. ML:2.7 0.0009327295 0.7552 AML other m 2019-09-20T19:31:45.12
IV.MUCR.HHE. ML:2.4 0.0005235000000000001 0.54 AML other m 2019-09-20T19:31:46.45
IV.RAFF.HHE. ML:2.1 0.00023449999999999998 1.3 AML other m 2019-09-20T19:31:46.71
IV.RAFF.HHN. ML:2.0 0.00017209065000000002 0.6144 AML other m 2019-09-20T19:31:48.10
IV.MUCR.HHN. ML:2.5 0.0005800000000000001 0.68 AML other m 2019-09-20T19:31:48.38
IV.IACL.HHE. ML:2.8 0.000869 1.46 AML other m 2019-09-20T19:31:49.87
IV.CLTA.HHE. ML:2.1 0.00020250000000000002 0.96 AML other m 2019-09-20T19:31:50.20
IV.CPTP.HHN. ML:2.5 0.000997 0.86 AML other m 2019-09-20T19:31:50.89
IV.CORL.HHN. ML:2.6 0.0005926693000000001 0.4736 AML other m 2019-09-20T19:31:50.98
IV.EPZF.HHE. ML:2.5 0.00065 0.58 AML other m 2019-09-20T19:31:51.28
IV.CPTP.HHE. ML:2.4 0.00088 0.74 AML other m 2019-09-20T19:31:51.63
IV.EPZF.HHN. ML:2.7 0.0010950000000000003 0.52 AML other m 2019-09-20T19:31:52.22
IV.IVPL.HHN. ML:2.7 0.0005762010499999999 0.6912 AML other m 2019-09-20T19:31:51.90
IV.IACL.HHN. ML:2.8 0.000954 0.44 AML other m 2019-09-20T19:31:52.08
IV.IVPL.HHE. ML:2.8 0.0007645 0.52 AML other m 2019-09-20T19:31:53.95
IV.SSY.HHE. ML:3.2 0.00131 0.82 AML other m 2019-09-20T19:31:54.15
IV.CORL.HHE. ML:2.6 0.0005933201500000001 0.7168 AML other m 2019-09-20T19:31:54.63
IV.NOV.HHE. ML:3.0 0.00141 0.36 AML other m 2019-09-20T19:31:55.72
IV.ILLI.HHN. ML:3.8 0.00672 0.7 AML other m 2019-09-20T19:31:56.39
IV.CLTA.HHN. ML:1.9 0.00011195 1 AML other m 2019-09-20T19:31:56.96
IV.NOV.HHN. ML:3.1 0.00157 1.42 AML other m 2019-09-20T19:31:56.25
IV.AIO.HHN. ML:2.6 0.00042133635000000003 0.5376 AML other m 2019-09-20T19:31:57.46
IV.SSY.HHN. ML:3.4 0.0020999999999999994 0.3 AML other m 2019-09-20T19:31:58.16
IV.AIO.HHE. ML:2.4 0.00028976635 0.5632 AML other m 2019-09-20T19:32:00.34
IV.ILLI.HHE. ML:3.6 0.004615 1.38 AML other m 2019-09-20T19:32:00.80
IV.MPNC.HHN. ML:2.9 0.000687 0.54 AML other m 2019-09-20T19:32:02.77
IV.CRJA.HHN. ML:2.7 0.00042 1.06 AML other m 2019-09-20T19:32:06.41
IV.MSRU.HHE. ML:2.8 0.000482 0.56 AML other m 2019-09-20T19:32:07.08
IV.MPNC.HHE. ML:2.8 0.0006395 1.44 AML other m 2019-09-20T19:32:07.96
IV.MSRU.HHN. ML:2.7 0.0003205 1.24 AML other m 2019-09-20T19:32:08.10
IV.CRJA.HHE. ML:2.5 0.00032250000000000003 1.06 AML other m 2019-09-20T19:32:11.25
MN.CEL.HHE. ML:2.3 0.00010035 0.54 AML other m 2019-09-20T19:32:12.97
MN.CEL.HNN. ML:2.5 0.0001455 0.62 AML other m 2019-09-20T19:32:15.64
MN.CEL.HHN. ML:2.4 0.000117 0.54 AML other m 2019-09-20T19:32:15.95
MN.CEL.HNE. ML:2.4 0.00011177305 0.64 AML other m 2019-09-20T19:32:17.73
IV.CAR1.HHN. ML:2.6 0.00008361697000000001 0.4864 AML other m 2019-09-20T19:32:23.78
IV.CAR1.HHE. ML:2.6 0.00008499072 0.4736 AML other m 2019-09-20T19:32:25.88
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, /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