Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 09-09-2019 and time 05:32:21 (Italy) in region 2 km NW Caltagirone (CT)

A magnitude ML 1.7 earthquake occured in region: 2 km NW Caltagirone (CT), on

  • 09-09-2019 03:32:21 (UTC)
  • 09-09-2019 05:32:21 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.2480, 14.4940 at 18 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 2 38686 38686
San Michele di Ganzaria CT 7 3245 41931
Mirabella Imbaccari CT 10 4912 46843
San Cono CT 12 2697 49540
Grammichele CT 13 13418 62958
Niscemi CL 15 27558 90516
Mineo CT 18 5159 95675
Piazza Armerina EN 19 21886 117561
Mazzarrone CT 19 4078 121639
Aidone EN 19 4889 126528

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km NE of Gela (75827 inhabitants)
33 Km N of Vittoria (63339 inhabitants)
42 Km NW of Ragusa (73313 inhabitants)
47 Km SE of Caltanissetta (63360 inhabitants)
49 Km NW of Modica (54633 inhabitants)
60 Km SW of Catania (314555 inhabitants)
72 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 2019-09-09
03:32:21		 37.248 14.4943 18 2020-02-28
16:41:49		 Bollettino Sismico Italiano INGV 72313891
Reviewed
Rev100 		ML 1.7 2019-09-09
03:32:22		 37.2617 14.4997 11 2019-09-09
03:44:11		 Sala Sismica INGV-Roma 72246631
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-09-09 03:32:21 ± 0.09
Latitude 37.2480 ± 0.0054
Longitude 14.4943 ± 0.0045
Depth (km) 18 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 72313891

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 535
Semi-minor axis of confidence ellipse (meter) 152
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 353
Circular confidence region, given by single value of horizontal uncertainty (meter) 530.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 42
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.19
Epicentral distance of station closest to the epicenter (degree) 0.10792
Epicentral distance of station farthest from the epicenter (degree) 0.69158
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:1.7

Field Value
Value 1.7
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 72313891
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-09-11 14:12:45

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 10
Type of magnitude ML
Reference to an origin 72246631
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-09-09 03:44:11
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.HPAC.HHZ. 2019-09-09T03:32:35.32 0.6 undecidable manual P 141 76.7676 96 0.04 49
IV.HLNI.HHZ. 2019-09-09T03:32:34.17 0.3 undecidable manual S 71 35.1426 107 0.08 80
IV.CPTP.HHZ. 2019-09-09T03:32:33.86 0.6 undecidable manual S 301 34.2435 107 0.01 54
IV.CMDO.HHZ. 2019-09-09T03:32:33.42 0.1 undecidable manual P 292 63.8916 98 0.12 100
IV.ISPIC.EHZ. 2019-09-09T03:32:33.28 0.6 undecidable manual P 145 63.2922 98 0.07 50
IV.RESU.HHZ. 2019-09-09T03:32:32.77 0.6 undecidable manual P 319 58.6968 99 0.26 49
IV.ESML.HHE. 2019-09-09T03:32:32.04 0.6 undecidable manual P 39 53.3022 100 0.35 48
IV.GALF.HHE. 2019-09-09T03:32:31.24 0.6 undecidable manual P 7 51.7038 100 -0.22 50
IV.SSY.HHZ. 2019-09-09T03:32:31.52 0.3 undecidable manual P 101 52.2033 100 0 78
IV.ACATE.EHE. 2019-09-09T03:32:31.79 0.6 undecidable manual S 179 24.8529 116 0.27 52
IV.CLTA.HHZ. 2019-09-09T03:32:30.95 0.3 undecidable manual P 258 48.1185 101 0.05 78
IV.HVZN.HHE. 2019-09-09T03:32:30.78 0.3 undecidable manual S 112 20.9679 121 0.16 81
IV.CAGR.HHE. 2019-09-09T03:32:29.99 0.3 undecidable manual P 1 41.5251 103 0.08 79
IV.RAFF.HHZ. 2019-09-09T03:32:29.14 0.6 undecidable manual S 256 11.9769 140 0.35 53
IV.HLNI.HHZ. 2019-09-09T03:32:28.54 0.3 undecidable manual P 71 35.1426 107 -0.43 74
IV.CPTP.HHZ. 2019-09-09T03:32:28.86 0.6 undecidable manual P 301 34.2435 107 0.03 54
IT.GEA.HGZ. 2019-09-09T03:32:27.55 1.0 undecidable manual P 217 26.5512 114 -0.17 26
IV.ACATE.EHE. 2019-09-09T03:32:27.30 0.3 undecidable manual P 179 24.8529 116 -0.19 79
IV.HVZN.HHE. 2019-09-09T03:32:26.92 0.3 undecidable manual P 112 20.9679 121 -0.05 82
IV.RAFF.HHZ. 2019-09-09T03:32:25.32 0.3 undecidable manual P 256 11.9769 140 -0.59 73
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RAFF.HHE. ML:1.5 0.0002314239 0.2208 AML other m 2019-09-09T03:32:29.22
IV.RAFF.HHN. ML:1.6 0.00030167854999999996 0.2384 AML other m 2019-09-09T03:32:29.29
IV.HLNI.HHN. ML:1.9 0.0003195074 0.2 AML other m 2019-09-09T03:32:34.59
IV.HLNI.HHE. ML:1.7 0.00018762645 0.2192 AML other m 2019-09-09T03:32:34.76
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