Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 31-08-2019 and time 00:48:10 (Italy) in region 3 km NW Caltagirone (CT)

A magnitude ML 1.7 earthquake occured in region: 3 km NW Caltagirone (CT), on

  • 30-08-2019 22:48:10 (UTC)
  • 31-08-2019 00:48:10 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.2580, 14.4950 at 17 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 3 38686 38686
San Michele di Ganzaria CT 7 3245 41931
Mirabella Imbaccari CT 9 4912 46843
San Cono CT 12 2697 49540
Grammichele CT 14 13418 62958
Niscemi CL 16 27558 90516
Mineo CT 18 5159 95675
Piazza Armerina EN 18 21886 117561
Aidone EN 18 4889 122450

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km NE of Gela (75827 inhabitants)
35 Km N of Vittoria (63339 inhabitants)
42 Km NW of Ragusa (73313 inhabitants)
46 Km SE of Caltanissetta (63360 inhabitants)
50 Km NW of Modica (54633 inhabitants)
59 Km SW of Catania (314555 inhabitants)
71 Km SW of Acireale (52622 inhabitants)
74 Km W of Siracusa (122291 inhabitants)
81 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 1.7 2019-08-30
22:48:10		 37.2578 14.4948 17 2019-11-13
14:31:02		 Bollettino Sismico Italiano INGV 72516591
Reviewed
Rev100 		ML 1.6 2019-08-30
22:48:10		 37.2762 14.4817 10 2019-08-30
22:54:27		 Sala Sismica INGV-Roma 71950751
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-08-30 22:48:10 ± 0.22
Latitude 37.2578 ± 0.0099
Longitude 14.4948 ± 0.0136
Depth (km) 17 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 72516591

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1139
Semi-minor axis of confidence ellipse (meter) 477
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 55
Circular confidence region, given by single value of horizontal uncertainty (meter) 1140.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 49
Number of associated phases, regardless of their use for origin computation 23
Number of defining phases 23
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.49
Epicentral distance of station closest to the epicenter (degree) 0.11152
Epicentral distance of station farthest from the epicenter (degree) 0.83997
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 15
Magnitudes information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 14
Type of magnitude ML
Reference to an origin 71950751
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-08-30 22:54:27

ML:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 14
Type of magnitude ML
Reference to an origin 72516591
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-09-27 15:37:46
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.ISPIC.EHZ. 2019-08-30T22:48:31.48 0.6 undecidable manual S 146 64.1913 96 0.83 38
IV.SSY.HHZ. 2019-08-30T22:48:28.88 0.6 undecidable manual S 102 52.3032 98 1.37 31
IV.MUCR.HHZ. 2019-08-30T22:48:27.15 0.3 undecidable manual P 21 93.24 94 0.35 66
IV.CROCE.HHZ. 2019-08-30T22:48:26.47 0.6 undecidable manual S 176 47.3193 99 0.28 48
IV.EPZF.HHZ. 2019-08-30T22:48:24.58 0.3 undecidable manual P 27 70.374 96 1.28 48
IV.PETRA.HHN. 2019-08-30T22:48:23.91 0.3 undecidable manual P 332 72.0723 95 0.35 68
IT.GEA.HGE. 2019-08-30T22:48:22.20 0.6 undecidable manual S 216 27.4503 109 1.16 35
IV.HLNI.HHZ. 2019-08-30T22:48:22.86 0.6 undecidable manual S 73 34.743 104 -0.05 51
IV.ACATE.EHE. 2019-08-30T22:48:21.18 0.3 undecidable manual S 179 25.9518 111 0.52 70
IV.ISPIC.EHZ. 2019-08-30T22:48:21.96 0.1 undecidable manual P 146 64.1913 96 -0.38 92
IV.HAGA.HHZ. 2019-08-30T22:48:20.77 0.3 undecidable manual P 87 58.3971 97 -0.68 63
IV.GALF.HHZ. 2019-08-30T22:48:20.39 0.1 undecidable manual P 7 50.616 98 0.12 100
IV.HVZN.HHE. 2019-08-30T22:48:20.19 0.3 undecidable manual S 114 21.3675 117 0.64 69
IV.SSY.HHZ. 2019-08-30T22:48:20.29 0.3 undecidable manual P 102 52.3032 98 -0.24 72
IV.CROCE.HHZ. 2019-08-30T22:48:19.56 0.6 undecidable manual P 176 47.3193 99 -0.2 50
IV.CAGR.HHE. 2019-08-30T22:48:18.54 0.3 undecidable manual P 1 40.4262 101 -0.18 74
IV.CPTP.HHZ. 2019-08-30T22:48:18.08 0.1 undecidable manual P 300 33.6441 105 0.37 97
IV.HLNI.HHZ. 2019-08-30T22:48:17.17 0.1 positive manual P 73 34.743 104 -0.7 86
IV.RAFF.HHZ. 2019-08-30T22:48:17.70 0.3 undecidable manual S 251 12.3765 136 0.11 80
IT.GEA.HGE. 2019-08-30T22:48:16.12 0.1 undecidable manual P 216 27.4503 109 -0.68 90
IV.ACATE.EHE. 2019-08-30T22:48:16.16 0.3 undecidable manual P 179 25.9518 111 -0.42 74
IV.HVZN.HHE. 2019-08-30T22:48:15.59 0.1 undecidable manual P 114 21.3675 117 -0.34 100
IV.RAFF.HHZ. 2019-08-30T22:48:13.94 0.1 negative manual P 251 12.3765 136 -0.87 84
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RAFF.HHN. ML:1.6 0.000359 0.24 AML other m 2019-08-30T22:48:17.91
IV.RAFF.HHE. ML:1.4 0.0002185 0.48 AML other m 2019-08-30T22:48:18.44
IV.HLNI.HHN. ML:2.0 0.00041000000000000005 0.2 AML other m 2019-08-30T22:48:23.21
IV.HLNI.HHE. ML:1.8 0.000212 0.48 AML other m 2019-08-30T22:48:23.78
IV.CROCE.HHN. ML:1.4 0.00007045 1.24 AML other m 2019-08-30T22:48:27.99
IV.CROCE.HHE. ML:1.3 0.00005225 1.04 AML other m 2019-08-30T22:48:28.06
IV.SSY.HHE. ML:1.8 0.0001625 0.84 AML other m 2019-08-30T22:48:29.95
IV.GALF.HHN. ML:1.4 0.00006755 0.6 AML other m 2019-08-30T22:48:31.41
IV.SSY.HHN. ML:2.2 0.000411 1.12 AML other m 2019-08-30T22:48:31.15
IV.ISPIC.EHE. ML:1.8 0.00011793 1.28 AML other m 2019-08-30T22:48:31.74
IV.ISPIC.EHN. ML:1.8 0.00010505 0.18 AML other m 2019-08-30T22:48:31.82
IV.HAGA.HHN. ML:1.7 0.00009565 1.6 AML other m 2019-08-30T22:48:32.99
IV.HAGA.HHE. ML:1.6 0.00008915000000000001 0.4 AML other m 2019-08-30T22:48:32.20
IV.GALF.HHE. ML:1.4 0.0000617 0.34 AML other m 2019-08-30T22:48:33.87
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