Earthquake with magnitude of ML 1.6 on date 17-03-2019 and time 21:06:09 (UTC) in region 7 km E Niscemi (CL)

A magnitude ML 1.6 earthquake occured in region: 7 km E Niscemi (CL), on

  • 17-03-2019 21:06:09 (UTC)
  • 17-03-2019 22:06:09 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.17, 14.46 at 22 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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.

Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Niscemi CL 7 27558 27558
Caltagirone CT 10 38686 66244
San Michele di Ganzaria CT 13 3245 69489
Mazzarrone CT 13 4078 73567
Acate RG 16 10954 84521
San Cono CT 16 2697 87218
Grammichele CT 17 13418 100636
Mirabella Imbaccari CT 18 4912 105548

Municipalities with at least 50000 inhabitants

An earthquake occurred to
21 Km NE of Gela (75827 inhabitants)
25 Km N of Vittoria (63339 inhabitants)
36 Km NW of Ragusa (73313 inhabitants)
44 Km NW of Modica (54633 inhabitants)
50 Km SE of Caltanissetta (63360 inhabitants)
67 Km SW of Catania (314555 inhabitants)
75 Km W of Siracusa (122291 inhabitants)
79 Km E of Agrigento (59770 inhabitants)
80 Km SW of Acireale (52622 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Rev 100 ML 1.6 2019-03-17
21:06:09
37.17 14.46 22 2019-03-17
21:13:36
Sala Sismica INGV-Roma 66645771
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-03-17 21:06:09 ± 0.37
Latitude 37.17 ± 0.01
Longitude 14.46 ± 0.02
Depth (km) 22 ± 6 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 66645771

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1790
Semi-minor axis of confidence ellipse (meter) 215
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 102
Circular confidence region, given by single value of horizontal uncertainty (meter) 1790
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 147
Number of associated phases, regardless of their use for origin computation 12
Number of defining phases 12
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) 0.14659
Epicentral distance of station farthest from the epicenter (degree) 0.65201
Number of stations at which the event was observed 7
Number of stations from which data was used for origin computation 7
Magnitude information

ML:1.6

Field Value
Value 1.6
Uncertainty 0.5
Num. used stations 4
Type of magnitude ML
Reference to an origin 66645771
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-03-17 21:13:36
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.HPAC.HHZ. 2019-03-17T21:06:31.87 0.3 undecidable manual S 134 0.652 100 0.81 56
IV.HAGA.HHZ. 2019-03-17T21:06:28.64 0.6 undecidable manual S 78 0.5693 102 0 47
IV.SSY.HHZ. 2019-03-17T21:06:27.14 0.6 undecidable manual S 91 0.4928 104 0.71 39
IV.HLNI.HHZ. 2019-03-17T21:06:23.07 0.6 undecidable manual S 61 0.3786 109 -0.11 50
IV.CROCE.HHZ. 2019-03-17T21:06:22.09 0.3 undecidable manual S 169 0.3399 112 -0.01 75
IV.HPAC.HHZ. 2019-03-17T21:06:21.69 0.3 positive manual P 134 0.652 100 -0.05 70
IV.HAGA.HHZ. 2019-03-17T21:06:19.84 0.1 undecidable manual P 78 0.5693 102 -0.5 87
IV.SSY.HHZ. 2019-03-17T21:06:18.96 0.1 undecidable manual P 91 0.4928 104 -0.11 96
IV.CPTP.HHZ. 2019-03-17T21:06:17.97 0.3 undecidable manual P 316 0.3345 112 1.47 44
IV.CROCE.HHZ. 2019-03-17T21:06:16.28 0.1 undecidable manual P 169 0.3399 112 -0.29 94
IV.HLNI.HHZ. 2019-03-17T21:06:16.75 0.1 positive manual P 61 0.3786 109 -0.44 92
IV.ACATE.EHZ. 2019-03-17T21:06:13.63 0.1 undecidable manual P 166 0.1466 138 -0.19 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.HLNI.HHN. ML:1.1 3.84E-5 0.5 AML other m 2019-03-17T21:06:23.85
IV.HLNI.HHE. ML:1.2 4.29E-5 1.24 AML other m 2019-03-17T21:06:26.20
IV.SSY.HHE. ML:1.9 0.00018 0.76 AML other m 2019-03-17T21:06:31.36
IV.SSY.HHN. ML:2.3 0.00042 0.44 AML other m 2019-03-17T21:06:32.88
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download