Earthquake with magnitude of ML 1.0 on date 08-05-2021 and time 11:24:03 (UTC) in region 2 km NE Biancavilla (CT)

A magnitude ML 1.0 earthquake occured in region: 2 km NE Biancavilla (CT), on

  • 08-05-2021 11:24:03 (UTC)
  • 08-05-2021 13:24:03 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.655, 14.882 at 4 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
Biancavilla CT 2 24007 24007
Santa Maria di Licodia CT 4 7641 31648
Adrano CT 4 36122 67770
Ragalna CT 6 3924 71694
PaternĂ² CT 9 48228 119922
Belpasso CT 11 28108 148030
Centuripe EN 13 5470 153500
Nicolosi CT 14 7463 160963
Camporotondo Etneo CT 15 5023 165986
San Pietro Clarenza CT 16 7743 173729
Bronte CT 16 19172 192901
Pedara CT 16 14102 207003
Motta Sant'Anastasia CT 18 12116 219119
Mascalucia CT 18 31958 251077
Trecastagni CT 18 10910 261987
Misterbianco CT 18 49410 311397
Tremestieri Etneo CT 19 20589 331986
Gravina di Catania CT 19 25838 357824
Catenanuova EN 19 4866 362690
Viagrande CT 20 8563 371253
Maletto CT 20 3920 375173

Municipalities with at least 50000 inhabitants

An earthquake occurred to
25 Km NW of Catania (314555 inhabitants)
26 Km W of Acireale (52622 inhabitants)
74 Km E of Caltanissetta (63360 inhabitants)
75 Km NW of Siracusa (122291 inhabitants)
82 Km N of Ragusa (73313 inhabitants)
84 Km SW of Reggio di Calabria (183035 inhabitants)
84 Km NE of Vittoria (63339 inhabitants)
84 Km SW of Messina (238439 inhabitants)
86 Km NE of Gela (75827 inhabitants)
89 Km N of Modica (54633 inhabitants)
Recent and historical seismicity
Seismic hazard
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 ( 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 1.0 2021-05-08
37.655 14.882 4 2021-05-08
Sala Operativa INGV_OE (Catania) 89912221
Preferred location and magnitude until now.
Origin information


Field Value
Time (UTC) 2021-05-08 11:24:03
Latitude 37.6550
Longitude 14.8820
Depth (km) 4 (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 89912221


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) 600
Confidence level of the uncertainty (%) 68


Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 189
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) 0.05
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
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 89912221
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2021-05-08 11:40:21
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download