Earthquake with magnitude of ML 1.6 on date 05-09-2021 and time 12:45:57 (Italy) in region 10 km E Bronte (CT)

A magnitude ML 1.6 earthquake occured in region: 10 km E Bronte (CT), on

  • 05-09-2021 10:45:57 (UTC)
  • 05-09-2021 12:45:57 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.756, 14.935 at 2 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
Bronte CT 10 19172 19172
Maletto CT 10 3920 23092
Adrano CT 14 36122 59214
Randazzo CT 14 10900 70114
Biancavilla CT 14 24007 94121
Ragalna CT 14 3924 98045
Santa Maria di Licodia CT 16 7641 105686
Maniace CT 16 3765 109451
Zafferana Etnea CT 16 9517 118968
Milo CT 16 1087 120055
Nicolosi CT 18 7463 127518
Santa Domenica Vittoria ME 18 980 128498
Sant'Alfio CT 19 1582 130080
Belpasso CT 19 28108 158188
Pedara CT 19 14102 172290
Moio Alcantara ME 19 717 173007
Santa Venerina CT 20 8592 181599
Trecastagni CT 20 10910 192509
PaternĂ² CT 20 48228 240737

Municipalities with at least 50000 inhabitants

An earthquake occurred to
26 Km NW of Acireale (52622 inhabitants)
31 Km NW of Catania (314555 inhabitants)
73 Km SW of Messina (238439 inhabitants)
74 Km SW of Reggio di Calabria (183035 inhabitants)
82 Km E of Caltanissetta (63360 inhabitants)
84 Km NW of Siracusa (122291 inhabitants)
94 Km N of Ragusa (73313 inhabitants)
96 Km NE of Vittoria (63339 inhabitants)
98 Km NE of Gela (75827 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 earthquake resentment in the area, expressed in terms of intensity on the MCS scale (Mercalli-Cancani-Sieberg). Intensities are determined using data from questionnaires collected on the website The intensities shown are determined considering all the reports received from each municipality, and are all the more reliable the greater the number of questionnaires. The collected data are subjected to an automatic statistical filter, but are not checked individually. In particular, intensities greater than or equal to the VI degree of the MCS or EMS scale require on-site verification by specialized personnel. The black star is the epicenter of the earthquake that occurred. This map is updated every time citizens fill out new questionnaires. The number of questionnaires processed to obtain this map, the date and time of the last update are shown at the top right.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
ML 1.6 2021-09-05
37.756 14.935 2 2021-09-05
Sala Operativa INGV_OE (Catania) 95069751
Preferred location and magnitude until now.
Origin information


Field Value
Time (UTC) 2021-09-05 10:45:57
Latitude 37.7560
Longitude 14.9350
Depth (km) 2 (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 95069751


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) 196
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) 0.06
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 1.6
Uncertainty 0.5
Num. used stations
Type of magnitude ML
Reference to an origin 95069751
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2021-09-05 10:51:21
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