Earthquake with magnitude of ML 1.9 on date 12-05-2021 and time 16:41:37 (Italy) in region 8 km E Castel di Iudica (CT)

A magnitude ML 1.9 earthquake occured in region: 8 km E Castel di Iudica (CT), on

  • 12-05-2021 14:41:37 (UTC)
  • 12-05-2021 16:41:37 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.467, 14.733 at 10 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 8 4625 4625
Ramacca CT 10 10894 15519
Catenanuova EN 12 4866 20385
Palagonia CT 15 16608 36993
Centuripe EN 17 5470 42463
Raddusa CT 18 3178 45641
PaternĂ² CT 20 48228 93869

Municipalities with at least 50000 inhabitants

An earthquake occurred to
32 Km W of Catania (314555 inhabitants)
42 Km W of Acireale (52622 inhabitants)
59 Km E of Caltanissetta (63360 inhabitants)
60 Km N of Vittoria (63339 inhabitants)
60 Km N of Ragusa (73313 inhabitants)
62 Km NE of Gela (75827 inhabitants)
67 Km NW of Siracusa (122291 inhabitants)
68 Km N of Modica (54633 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
ML 1.9 2021-05-12
14:41:37
37.4667 14.7327 10 2021-05-12
14:49:01
Sala Sismica INGV-Roma 90024771
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-05-12 14:41:37 ± 0.18
Latitude 37.4667 ± 0.0081
Longitude 14.7327 ± 0.0125
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 90024771

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1220
Semi-minor axis of confidence ellipse (meter) 756
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 237
Circular confidence region, given by single value of horizontal uncertainty (meter) 1220
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 149
Number of associated phases, regardless of their use for origin computation 15
Number of defining phases 13
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.24
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.41099
Number of stations at which the event was observed 10
Number of stations from which data was used for origin computation 8
Magnitude information

ML:1.9

Field Value
Value 1.9
Uncertainty 0.2
Num. used stations 14
Type of magnitude ML
Reference to an origin 90024771
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-05-12 14:49:01
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.FERC.HNZ. 2021-05-12T14:42:03.20 3.0 undecidable manual P -0.06 0
IV.HAVL.HHZ. 2021-05-12T14:41:57.74 3.0 undecidable manual P 0
IV.SSY.HHZ. 2021-05-12T14:41:52.69 0.6 undecidable manual S 139 0.411 50 0.56 42
IV.HAGA.HHZ. 2021-05-12T14:41:51.27 0.3 undecidable manual S 118 0.3813 50 0.01 72
IV.HVZN.HHZ. 2021-05-12T14:41:48.85 0.6 undecidable manual S 183 0.2887 50 0.35 46
IV.HCRL.HHZ. 2021-05-12T14:41:48.86 0.3 undecidable manual S 128 0.3004 50 0 74
IV.HAGA.HHZ. 2021-05-12T14:41:45.26 0.6 undecidable manual P 118 0.3813 50 -0.1 48
IV.SSY.HHZ. 2021-05-12T14:41:45.67 1.0 positive manual P 139 0.411 50 -0.19 23
IV.EMSG.HHZ. 2021-05-12T14:41:45.77 0.6 undecidable manual P 26 0.3939 50 0.2 46
IV.HLNI.HHZ. 2021-05-12T14:41:44.82 0.6 undecidable manual S 137 0.1619 120 0.36 47
IV.HCRL.HHZ. 2021-05-12T14:41:43.64 0.1 undecidable manual P 128 0.3004 50 -0.34 92
IV.GALF.HHZ. 2021-05-12T14:41:43.92 0.6 undecidable manual P 332 0.277 50 0.34 46
IT.LNT.HGE. 2021-05-12T14:41:43.28 0.6 undecidable manual P 130 0.2788 50 -0.32 46
IV.HVZN.HHZ. 2021-05-12T14:41:43.45 0.3 positive manual P 183 0.2887 50 -0.32 69
IV.HLNI.HHZ. 2021-05-12T14:41:41.38 0.1 negative manual P 137 0.1619 120 -0.06 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.HLNI.HHN. ML:1.7 0.0004235 1.48 AML other m 2021-05-12T14:41:45.13
IV.HLNI.HHE. ML:1.8 0.0005425 0.96 AML other m 2021-05-12T14:41:45.46
IV.HCRL.HHN. ML:2 0.0003905 1.12 AML other m 2021-05-12T14:41:49.29
IV.HCRL.HHE. ML:2.1 0.0004845 0.44 AML other m 2021-05-12T14:41:49.11
IV.GALF.HHN. ML:1.9 0.0003935 0.42 AML other m 2021-05-12T14:41:50.46
IV.HAGA.HHN. ML:1.7 0.0001595 0.96 AML other m 2021-05-12T14:41:51.91
IV.HVZN.HNE. ML:1.8 0.0002555 0.68 AML other m 2021-05-12T14:41:51.44
IV.HVZN.HHE. ML:1.8 0.0002765 0.7 AML other m 2021-05-12T14:41:51.45
IV.HVZN.HHN. ML:1.8 0.00031 0.42 AML other m 2021-05-12T14:41:51.74
IV.HVZN.HNN. ML:2 0.0004645 0.4 AML other m 2021-05-12T14:41:51.74
IV.HAGA.HHE. ML:1.8 0.0002135 0.6 AML other m 2021-05-12T14:41:51.39
IV.SSY.HHE. ML:2.4 0.0008055 1.76 AML other m 2021-05-12T14:41:53.01
IV.SSY.HHN. ML:2.7 0.001395 0.24 AML other m 2021-05-12T14:41:53.62
IV.GALF.HHE. ML:1.7 0.0002375 0.48 AML other m 2021-05-12T14:41:54.95
IV.HAVL.HHN. ML:2.1 0.000226 1.04 AML other m 2021-05-12T14:41:59.17
IV.HAVL.HHE. ML:2.1 0.0002475 1.36 AML other m 2021-05-12T14:41:59.16
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