Earthquake with magnitude of ML 1.1 on date 11-08-2020 and time 18:24:08 (Italy) in region 6 km E Randazzo (CT)

A magnitude ML 1.1 earthquake occured in region: 6 km E Randazzo (CT), on

  • 11-08-2020 16:24:08 (UTC)
  • 11-08-2020 18:24:08 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.86, 15.01 at 13 km depth.

The earthquake was located by: Sala Operativa INGV_OE (Catania).

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
Randazzo CT 6 10900 10900
Moio Alcantara ME 6 717 11617
Santa Domenica Vittoria ME 8 980 12597
Malvagna ME 8 733 13330
Roccella Valdemone ME 8 666 13996
Castiglione di Sicilia CT 11 3215 17211
Linguaglossa CT 12 5403 22614
Francavilla di Sicilia ME 13 3945 26559
Maletto CT 13 3920 30479
Motta Camastra ME 15 845 31324
Piedimonte Etneo CT 16 3963 35287
Floresta ME 17 485 35772
Bronte CT 17 19172 54944
Maniace CT 17 3765 58709
Sant'Alfio CT 18 1582 60291
Milo CT 18 1087 61378
Montalbano Elicona ME 19 2287 63665
Gaggi ME 19 3184 66849
Fiumefreddo di Sicilia CT 19 9623 76472
Graniti ME 20 1492 77964
Calatabiano CT 20 5308 83272
Zafferana Etnea CT 20 9517 92789

Municipalities with at least 50000 inhabitants

An earthquake occurred to
31 Km NW of Acireale (52622 inhabitants)
40 Km N of Catania (314555 inhabitants)
61 Km SW of Messina (238439 inhabitants)
63 Km W of Reggio di Calabria (183035 inhabitants)
92 Km N of Siracusa (122291 inhabitants)
92 Km E of Caltanissetta (63360 inhabitants)
Recent and historical Seismicity
Seismic hazard
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 ( 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
ML 1.1 2020-08-11
37.86 15.01 13 2020-08-11
Sala Operativa INGV_OE (Catania) 81884651
Preferred location and magnitude until now.
Origin information


Field Value
Time (UTC) 2020-08-11 16:24:08
Latitude 37.86
Longitude 15.01
Depth (km) 13 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 200 -> SURVEY-INGV-CT#SeismPicker_SO-OE
Event type earthquake
Origin ID 81884651


Field Value
Preferred uncertainty description horizontal uncertainty
Semi-major axis of confidence ellipse (meter)
Semi-minor axis of confidence ellipse (meter)
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi)
Circular confidence region, given by single value of horizontal uncertainty (meter) 1300
Confidence level of the uncertainty (%) 68


Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 137
Number of associated phases, regardless of their use for origin computation 1
Number of defining phases 1
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.09
Epicentral distance of station closest to the epicenter (degree)
Epicentral distance of station farthest from the epicenter (degree)
Number of stations at which the event was observed 0
Number of stations from which data was used for origin computation 0
Magnitude information


Field Value
Value 1.1
Uncertainty 0.3
Num. used stations
Type of magnitude ML
Reference to an origin 81884651
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2020-08-11 18:18:23
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download