Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.6 on date 01-05-2019 and time 11:06:04 (Italy) in region 6 km SW Ramacca (CT)

A magnitude ML 1.6 earthquake occured in region: 6 km SW Ramacca (CT), on

  • 01-05-2019 09:06:04 (UTC)
  • 01-05-2019 11:06:04 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.3430, 14.6630 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
Ramacca CT 6 10894 10894
Palagonia CT 8 16608 27502
Mineo CT 9 5159 32661
Militello in Val di Catania CT 14 7443 40104
Grammichele CT 14 13418 53522
Castel di Iudica CT 17 4625 58147
Scordia CT 17 17095 75242
Caltagirone CT 18 38686 113928
Raddusa CT 19 3178 117106
Mirabella Imbaccari CT 19 4912 122018

Municipalities with at least 50000 inhabitants

An earthquake occurred to
42 Km W of Catania (314555 inhabitants)
45 Km N of Vittoria (63339 inhabitants)
47 Km N of Ragusa (73313 inhabitants)
48 Km NE of Gela (75827 inhabitants)
54 Km SW of Acireale (52622 inhabitants)
54 Km N of Modica (54633 inhabitants)
56 Km E of Caltanissetta (63360 inhabitants)
64 Km NW of Siracusa (122291 inhabitants)
95 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 1.6 2019-05-01
09:06:04		 37.343 14.6628 17 2019-11-13
14:30:51		 Bollettino Sismico Italiano INGV 69277481
Reviewed
Rev100 		ML 1.2 2019-05-01
09:06:04		 37.3517 14.6558 10 2019-05-01
09:16:35		 Sala Sismica INGV-Roma 68148621
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-05-01 09:06:04 ± 0.34
Latitude 37.3430 ± 0.0198
Longitude 14.6628 ± 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 69277481

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 2016
Semi-minor axis of confidence ellipse (meter) 1064
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 341
Circular confidence region, given by single value of horizontal uncertainty (meter) 2020.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 105
Number of associated phases, regardless of their use for origin computation 11
Number of defining phases 11
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.43
Epicentral distance of station closest to the epicenter (degree) 0.16637
Epicentral distance of station farthest from the epicenter (degree) 0.39570
Number of stations at which the event was observed 6
Number of stations from which data was used for origin computation 6
Magnitudes information

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations 4
Type of magnitude ML
Reference to an origin 68148621
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-05-01 09:16:35

ML:1.6

Field Value
Value 1.6
Uncertainty 0.3
Num. used stations 4
Type of magnitude ML
Reference to an origin 69277481
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-09-18 14:09:17
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.HAGA.HHE. 2019-05-01T09:06:18.99 0.6 undecidable manual S 98 43.9227 101 0.23 46
IV.SSY.HHZ. 2019-05-01T09:06:18.94 0.3 undecidable manual S 119 41.7249 101 0.76 57
IV.RAFF.HHZ. 2019-05-01T09:06:15.88 0.3 undecidable manual S 243 29.748 108 0.8 60
IV.HVZN.HNE. 2019-05-01T09:06:12.56 0.3 undecidable manual S 166 18.87 122 0.12 73
IV.SSY.HHZ. 2019-05-01T09:06:12.25 0.3 undecidable manual P 119 41.7249 101 -0.12 72
IV.HLNI.HHZ. 2019-05-01T09:06:12.37 0.1 undecidable manual S 88 18.4704 123 0.02 100
IV.HAGA.HHE. 2019-05-01T09:06:12.41 0.6 undecidable manual P 98 43.9227 101 -0.29 46
IV.GALF.HNZ. 2019-05-01T09:06:12.82 0.6 undecidable manual P 348 41.625 101 0.45 45
IV.RAFF.HHZ. 2019-05-01T09:06:10.11 0.1 positive manual P 243 29.748 108 -0.47 90
IV.HVZN.HNE. 2019-05-01T09:06:08.63 0.1 undecidable manual P 166 18.87 122 -0.43 94
IV.HLNI.HHZ. 2019-05-01T09:06:08.71 0.1 positive manual P 88 18.4704 123 -0.3 97
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.RAFF.HHN. ML:1.4 0.0001109513 0.2368 AML other m 2019-05-01T09:06:16.16
IV.RAFF.HHE. ML:1.4 0.000105837335 1.7952 AML other m 2019-05-01T09:06:16.98
IV.SSY.HHN. ML:2.2 0.00043338605 0.3008 AML other m 2019-05-01T09:06:20.25
IV.SSY.HHE. ML:1.8 0.0001818804 0.224 AML other m 2019-05-01T09:06:20.75
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