Earthquake with magnitude of Md 1.6 on date 18-06-2021 and time 08:15:11 (Italy) in region 7 km SE Castel di Iudica (CT)

A magnitude Md 1.6 earthquake occured in region: 7 km SE Castel di Iudica (CT), on

  • 18-06-2021 06:15:11 (UTC)
  • 18-06-2021 08:15:11 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.465, 14.716 at 11 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
Castel di Iudica CT 7 4625 4625
Ramacca CT 9 10894 15519
Catenanuova EN 12 4866 20385
Palagonia CT 15 16608 36993
Raddusa CT 16 3178 40171
Centuripe EN 18 5470 45641

Municipalities with at least 50000 inhabitants

An earthquake occurred to
33 Km W of Catania (314555 inhabitants)
43 Km W of Acireale (52622 inhabitants)
58 Km E of Caltanissetta (63360 inhabitants)
59 Km N of Vittoria (63339 inhabitants)
60 Km N of Ragusa (73313 inhabitants)
61 Km NE of Gela (75827 inhabitants)
67 Km N of Modica (54633 inhabitants)
68 Km NW of Siracusa (122291 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web 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
Reviewed
Rev100
Md 1.6 2021-06-18
06:15:11
37.4648 14.7163 11 2021-06-18
06:27:17
Sala Sismica INGV-Roma 91480271
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-06-18 06:15:11 ± 0.19
Latitude 37.4648 ± 0.0090
Longitude 14.7163 ± 0.0045
Depth (km) 11 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 91480271

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1044
Semi-minor axis of confidence ellipse (meter) 308
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 360
Circular confidence region, given by single value of horizontal uncertainty (meter) 1040
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 248
Number of associated phases, regardless of their use for origin computation 36
Number of defining phases 16
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
Epicentral distance of station farthest from the epicenter (degree) 0.59895
Number of stations at which the event was observed 27
Number of stations from which data was used for origin computation 8
Magnitude information

Md:1.6

Field Value
Value 1.6
Uncertainty 0.2
Num. used stations 8
Type of magnitude Md
Reference to an origin 91480271
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-06-18 06:27:17
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.GIZZ.HHZ. 2021-06-18T06:15:36.17 3.0 undecidable manual Sn -6.41 0
IV.HAVL.HHZ. 2021-06-18T06:15:32.47 0.1 undecidable manual S 147 0.5989 50 0.41 85
IV.HMDC.HHZ. 2021-06-18T06:15:29.26 0.1 undecidable manual S 174 0.5081 50 -0.11 92
IV.HVIT.HHZ. 2021-06-18T06:15:28.77 0.1 undecidable manual S 198 0.4964 50 -0.25 90
IV.SSY.HHZ. 2021-06-18T06:15:26.68 0.1 undecidable manual S 137 0.4182 50 -0.02 96
IV.RAFF.HHZ. 2021-06-18T06:15:25.57 0.1 undecidable manual S 229 0.3714 50 0.27 92
IV.HAGA.HHZ. 2021-06-18T06:15:25.81 0.1 undecidable manual S 117 0.3921 50 -0.11 94
IV.HAVL.HHZ. 2021-06-18T06:15:23.21 0.6 undecidable manual P 147 0.5989 50 -0.28 44
IV.HCRL.HHZ. 2021-06-18T06:15:23.61 0.1 undecidable manual S 126 0.3103 50 0.12 96
IV.TDS.HHZ. 2021-06-18T06:15:22.20 3.0 undecidable manual Sn -7.51 0
IV.HMDC.HHZ. 2021-06-18T06:15:21.87 1.0 positive manual P 174 0.5081 50 -0.06 23
IV.HVIT.HHZ. 2021-06-18T06:15:21.41 0.1 undecidable manual P 198 0.4964 50 -0.32 88
IV.SSY.HHZ. 2021-06-18T06:15:20.34 0.3 negative manual P 137 0.4182 50 -0.05 71
IV.RAFF.HHZ. 2021-06-18T06:15:19.77 0.1 positive manual P 229 0.3714 50 0.18 93
IV.HAGA.HHZ. 2021-06-18T06:15:19.86 1.0 undecidable manual P 117 0.3921 50 -0.08 24
IV.HLNI.HHZ. 2021-06-18T06:15:19.34 0.1 undecidable manual S 133 0.17 120 0.04 100
IV.HCRL.HHZ. 2021-06-18T06:15:18.46 0.6 positive manual P 126 0.3103 50 -0.08 48
GU.PZZ.HHZ. 2021-06-18T06:15:17.14 3.0 positive manual Pg 11.94 0
IV.HLNI.HHZ. 2021-06-18T06:15:16.18 0.1 negative manual P 133 0.17 120 0.06 100
IV.PTRP.HHZ. 2021-06-18T06:15:03.42 3.0 undecidable manual Sn -6.64 0
GU.BURY.HHZ. 2021-06-18T06:14:58.13 3.0 undecidable manual Pn -0.11 0
IV.EUCT.HNZ. 2021-06-18T06:14:55.40 3.0 positive manual Pg 3.14 0
CH.FUORN.HHZ. 2021-06-18T06:14:53.71 3.0 undecidable manual Pn -5.9 0
IV.COLB.HHZ. 2021-06-18T06:14:46.43 3.0 undecidable manual Sg 0.27 0
IV.NOCI.HHZ. 2021-06-18T06:14:46.04 3.0 negative manual Pg 4.56 0
IV.SANR.HNZ. 2021-06-18T06:14:40.69 3.0 undecidable manual Pg -0.97 0
IV.MNTV.EHZ. 2021-06-18T06:14:38.10 3.0 negative manual Pn -2.05 0
IV.SENA.HHZ. 2021-06-18T06:14:36.74 3.0 positive manual Pn -9.99 0
IV.MRB1.HHZ. 2021-06-18T06:14:35.29 3.0 undecidable manual Sn -9.99 0
IV.MMN.HHZ. 2021-06-18T06:14:32.08 3.0 positive manual Pn -9.99 0
IV.TST01.HHZ. 2021-06-18T06:14:21.09 3.0 undecidable manual Sn -6.09 0
IV.MRB1.HHZ. 2021-06-18T06:14:14.42 3.0 undecidable manual Pn -8.22 0
IV.RMP.HHZ. 2021-06-18T06:14:00.91 3.0 positive manual P -9.89 0
IV.MMO1.EHZ. 2021-06-18T06:13:55.12 3.0 undecidable manual P -5.52 0
IV.FAGN.HHZ. 2021-06-18T06:13:54.82 3.0 undecidable manual P -7.41 0
IV.FIAM.HNZ. 2021-06-18T06:13:53.01 3.0 undecidable manual P -9.99 0
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.HLNI.HHZ. Md:1.2 9 END duration s
IV.HCRL.HHZ. Md:1.5 13 END duration s
IV.RAFF.HHZ. Md:1.6 13 END duration s
IV.HAGA.HHZ. Md:1.6 13 END duration s
IV.SSY.HHZ. Md:1.6 14 END duration s
IV.HMDC.HHZ. Md:1.8 17 END duration s
IV.HAVL.HHZ. Md:1.9 18 END duration s
IV.HVIT.HHZ. Md:1.8 18 END duration s
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