Earthquake with magnitude of ML 1.4 on date 17-09-2021 and time 15:35:54 (Italy) in region 12 km W Milo (CT)

A magnitude ML 1.4 earthquake occured in region: 12 km W Milo (CT), on

  • 17-09-2021 13:35:54 (UTC)
  • 17-09-2021 15:35:54 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.767, 14.993 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
Milo CT 12 1087 1087
Zafferana Etnea CT 13 9517 10604
Maletto CT 13 3920 14524
Randazzo CT 13 10900 25424
Sant'Alfio CT 14 1582 27006
Bronte CT 14 19172 46178
Moio Alcantara ME 16 717 46895
Santa Venerina CT 16 8592 55487
Linguaglossa CT 16 5403 60890
Ragalna CT 16 3924 64814
Santa Domenica Vittoria ME 17 980 65794
Piedimonte Etneo CT 17 3963 69757
Nicolosi CT 17 7463 77220
Castiglione di Sicilia CT 17 3215 80435
Giarre CT 17 27659 108094
Pedara CT 18 14102 122196
Biancavilla CT 18 24007 146203
Malvagna ME 18 733 146936
Mascali CT 18 14282 161218
Adrano CT 18 36122 197340
Trecastagni CT 18 10910 208250
Roccella Valdemone ME 19 666 208916
Riposto CT 19 14838 223754
Santa Maria di Licodia CT 19 7641 231395
Fiumefreddo di Sicilia CT 19 9623 241018
Maniace CT 19 3765 244783
Belpasso CT 19 28108 272891
Viagrande CT 20 8563 281454
Francavilla di Sicilia ME 20 3945 285399

Municipalities with at least 50000 inhabitants

An earthquake occurred to
23 Km NW of Acireale (52622 inhabitants)
30 Km N of Catania (314555 inhabitants)
69 Km SW of Messina (238439 inhabitants)
69 Km SW of Reggio di Calabria (183035 inhabitants)
83 Km NW of Siracusa (122291 inhabitants)
87 Km E of Caltanissetta (63360 inhabitants)
96 Km N of Ragusa (73313 inhabitants)
99 Km NE of Vittoria (63339 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 1.4 2021-09-17
37.767 14.993 2 2021-09-17
Sala Operativa INGV_OE (Catania) 95548551
Preferred location and magnitude until now.
Origin information


Field Value
Time (UTC) 2021-09-17 13:35:54
Latitude 37.7670
Longitude 14.9930
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 95548551


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) 300
Confidence level of the uncertainty (%) 68


Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 60
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) 0.23
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 1.4
Uncertainty 0.1
Num. used stations
Type of magnitude ML
Reference to an origin 95548551
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2021-09-17 13:48:28
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