Earthquake with magnitude of ML 1.2 on date 29-08-2021 and time 06:07:03 (Italy) in region 2 km NE Biancavilla (CT)

A magnitude ML 1.2 earthquake occured in region: 2 km NE Biancavilla (CT), on

  • 29-08-2021 04:07:03 (UTC)
  • 29-08-2021 06:07:03 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.652, 14.893 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
Ragalna CT 5 3924 35572
Adrano CT 5 36122 71694
PaternĂ² CT 8 48228 119922
Belpasso CT 10 28108 148030
Nicolosi CT 13 7463 155493
Centuripe EN 14 5470 160963
Camporotondo Etneo CT 14 5023 165986
San Pietro Clarenza CT 15 7743 173729
Pedara CT 15 14102 187831
Bronte CT 16 19172 207003
Mascalucia CT 17 31958 238961
Motta Sant'Anastasia CT 17 12116 251077
Trecastagni CT 17 10910 261987
Misterbianco CT 18 49410 311397
Tremestieri Etneo CT 18 20589 331986
Gravina di Catania CT 18 25838 357824
Viagrande CT 19 8563 366387
Zafferana Etnea CT 19 9517 375904
Sant'Agata li Battiati CT 20 9479 385383
San Giovanni la Punta CT 20 23060 408443
Aci Bonaccorsi CT 20 3524 411967
Maletto CT 20 3920 415887
Catenanuova EN 20 4866 420753

Municipalities with at least 50000 inhabitants

An earthquake occurred to
24 Km NW of Catania (314555 inhabitants)
25 Km W of Acireale (52622 inhabitants)
75 Km NW of Siracusa (122291 inhabitants)
75 Km E of Caltanissetta (63360 inhabitants)
82 Km N of Ragusa (73313 inhabitants)
83 Km SW of Reggio di Calabria (183035 inhabitants)
84 Km SW of Messina (238439 inhabitants)
84 Km NE of Vittoria (63339 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 1.2 2021-08-29
37.652 14.893 4 2021-08-29
Sala Operativa INGV_OE (Catania) 94773981
Preferred location and magnitude until now.
Origin information


Field Value
Time (UTC) 2021-08-29 04:07:03
Latitude 37.6520
Longitude 14.8930
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 94773981


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) 1600
Confidence level of the uncertainty (%) 68


Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 168
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) 0.14
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 1.2
Uncertainty 0.3
Num. used stations
Type of magnitude ML
Reference to an origin 94773981
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2021-08-29 04:25:59
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