Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 08-05-2019 and time 03:10:05 (UTC) in region 7 km SW Grammichele (CT)

A magnitude ML 1.8 earthquake occured in region: 7 km SW Grammichele (CT), on

  • 08-05-2019 03:10:05 (UTC)
  • 08-05-2019 05:10:05 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.1690, 14.5840 at 21 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
Grammichele CT 7 13418 13418
Mazzarrone CT 10 4078 17496
Caltagirone CT 10 38686 56182
Licodia Eubea CT 11 3081 59263
Mineo CT 14 5159 64422
Vizzini CT 15 6241 70663
Acate RG 18 10954 81617
Niscemi CL 18 27558 109175
Monterosso Almo RG 18 3032 112207
Chiaramonte Gulfi RG 18 8238 120445
San Michele di Ganzaria CT 19 3245 123690

Municipalities with at least 50000 inhabitants

An earthquake occurred to
25 Km N of Vittoria (63339 inhabitants)
30 Km NW of Ragusa (73313 inhabitants)
32 Km E of Gela (75827 inhabitants)
38 Km NW of Modica (54633 inhabitants)
58 Km SW of Catania (314555 inhabitants)
59 Km SE of Caltanissetta (63360 inhabitants)
64 Km W of Siracusa (122291 inhabitants)
71 Km SW of Acireale (52622 inhabitants)
90 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 1.8 2019-05-08
03:10:05		 37.1693 14.5843 21 2019-11-13
14:30:51		 Bollettino Sismico Italiano INGV 69588881
Reviewed
Rev100 		ML 2.0 2019-05-08
03:10:05		 37.2432 14.5677 19 2019-05-08
03:18:21		 Sala Sismica INGV-Roma 68347461
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-05-08 03:10:05 ± 0.17
Latitude 37.1693 ± 0.0090
Longitude 14.5843 ± 0.0079
Depth (km) 21 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 69588881

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 804
Semi-minor axis of confidence ellipse (meter) 622
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 340
Circular confidence region, given by single value of horizontal uncertainty (meter) 800.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 100
Number of associated phases, regardless of their use for origin computation 36
Number of defining phases 36
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.44
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 1.15023
Number of stations at which the event was observed 22
Number of stations from which data was used for origin computation 22
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.4
Num. used stations 4
Type of magnitude ML
Reference to an origin 68347461
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-05-08 03:18:21

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 9
Type of magnitude ML
Reference to an origin 69588881
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-06-16 16:38:47
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.NOV.HHZ. 2019-05-08T03:10:36.58 0.6 undecidable manual S 27 106.9152 96 0.2 43
IV.MUCR.HHE. 2019-05-08T03:10:35.43 0.6 undecidable manual S 15 100.2219 97 0.83 37
IV.MSFR.HHZ. 2019-05-08T03:10:34.20 0.6 undecidable manual S 0 95.9262 97 0.74 38
IV.EPZF.HHZ. 2019-05-08T03:10:29.06 0.6 undecidable manual S 18 76.4679 99 0.73 40
IV.HPAC.HHZ. 2019-05-08T03:10:26.37 0.3 undecidable manual S 142 64.9905 101 1.06 50
IV.MPNC.HHN. 2019-05-08T03:10:25.93 0.1 undecidable manual P 32 127.6722 95 -0.48 77
IV.NOV.HHZ. 2019-05-08T03:10:23.35 0.1 undecidable manual P 27 106.9152 96 0.13 87
IV.AGST.EHE. 2019-05-08T03:10:23.45 0.6 undecidable manual S 80 57.5979 103 0.07 48
IV.ESML.HHE. 2019-05-08T03:10:23.66 0.6 undecidable manual S 27 56.1993 103 0.66 42
IV.PLLN.EHN. 2019-05-08T03:10:22.05 0.1 undecidable manual P 337 99.2229 97 0.01 90
IV.CLTA.HHZ. 2019-05-08T03:10:22.81 0.6 undecidable manual S 269 55.0005 103 0.1 49
IV.HAGA.HHZ. 2019-05-08T03:10:21.93 0.1 undecidable manual S 76 52.0035 104 0 99
IV.MUCR.HHE. 2019-05-08T03:10:21.85 0.1 undecidable manual P 15 100.2219 97 -0.34 84
IV.MSFR.HHZ. 2019-05-08T03:10:21.22 0.1 undecidable manual P 0 95.9262 97 -0.32 85
IV.SSY.HHZ. 2019-05-08T03:10:20.34 0.1 undecidable manual S 92 43.3233 108 0.65 84
IV.EPIT.HHN. 2019-05-08T03:10:19.32 0.1 undecidable manual P 30 82.4508 98 -0.16 90
IV.EPZF.HHZ. 2019-05-08T03:10:19.44 0.1 undecidable manual P 18 76.4679 99 0.87 74
IV.CPTP.HHZ. 2019-05-08T03:10:19.49 0.6 undecidable manual S 305 45.621 107 -0.8 39
IV.RESU.HHZ. 2019-05-08T03:10:18.36 0.1 undecidable manual P 319 70.4739 100 0.7 81
IV.EPOZ.HHZ. 2019-05-08T03:10:18.52 0.1 undecidable manual P 43 77.0673 99 -0.14 92
IV.ECHR.HHE. 2019-05-08T03:10:17.47 0.6 undecidable manual P 27 64.2912 101 0.76 40
IV.HPAC.HHZ. 2019-05-08T03:10:17.54 0.3 undecidable manual P 142 64.9905 101 0.71 59
IT.GEA.HGE. 2019-05-08T03:10:16.34 0.1 undecidable manual S 0.27 94
IV.CLTA.HHZ. 2019-05-08T03:10:15.16 0.1 undecidable manual P 269 55.0005 103 -0.17 95
IV.ESML.HHE. 2019-05-08T03:10:15.03 0.1 undecidable manual P 27 56.1993 103 -0.47 89
IV.CAGR.HHE. 2019-05-08T03:10:14.63 0.1 undecidable manual P 352 50.8158 105 -0.06 97
IV.RAFF.HHZ. 2019-05-08T03:10:14.74 0.6 undecidable manual S 287 20.4684 130 0.47 48
IV.HAGA.HHZ. 2019-05-08T03:10:14.24 0.1 undecidable manual P 76 52.0035 104 -0.63 85
IV.AGST.EHE. 2019-05-08T03:10:14.97 0.1 undecidable manual P 80 57.5979 103 -0.74 81
IV.CPTP.HHZ. 2019-05-08T03:10:13.03 0.1 undecidable manual P 305 45.621 107 -0.9 75
IV.SSY.HHZ. 2019-05-08T03:10:13.34 0.1 positive manual P 92 43.3233 108 -0.24 96
MN.VAE.HHZ. 2019-05-08T03:10:13.32 0.1 undecidable manual P 329 39.0276 110 0.36 95
IV.HVZN.HNE. 2019-05-08T03:10:12.39 0.1 undecidable manual S 85 11.6772 147 -0.31 100
IT.GEA.HGE. 2019-05-08T03:10:10.80 0.3 undecidable manual P -0.61 64
IV.HVZN.HNE. 2019-05-08T03:10:09.23 0.3 undecidable manual P 85 11.6772 147 -0.31 75
IV.RAFF.HHZ. 2019-05-08T03:10:09.98 0.1 positive manual P 287 20.4684 130 -0.48 94
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RAFF.HHE. ML:1.6 0.00023086485000000002 0.32 AML other m 2019-05-08T03:10:15.12
IV.RAFF.HHN. ML:1.9 0.00038375504999999996 0.2992 AML other m 2019-05-08T03:10:15.10
IV.SSY.HHE. ML:2.0 0.00029630484999999997 0.76 AML other m 2019-05-08T03:10:21.60
IV.SSY.HHN. ML:2.4 0.00074023565 1.4208 AML other m 2019-05-08T03:10:21.56
IV.HAGA.HHN. ML:1.8 0.0001523562 0.0992 AML other m 2019-05-08T03:10:22.10
IV.HAGA.HHE. ML:1.7 0.00010800570000000002 0.0992 AML other m 2019-05-08T03:10:22.12
IV.HPAC.HHE. ML:0.0 0.00015134561 0.2816 AML other m 2019-05-08T03:10:28.09
IV.HPAC.HHN. ML:0.0 0.00029135414999999996 1.2608 AML other m 2019-05-08T03:10:28.50
IV.CLTA.HHE. ML:1.3 0.000042651104999999996 2.16 AML other m 2019-05-08T03:10:24.32
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