Earthquake with magnitude of ML 1.6 on date 25-10-2021 and time 13:23:48 (Italy) in region 2 km NE Piedimonte Etneo (CT)

A magnitude ML 1.6 earthquake occured in region: 2 km NE Piedimonte Etneo (CT), on

  • 25-10-2021 11:23:48 (UTC)
  • 25-10-2021 13:23:48 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.819, 15.198 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
Piedimonte Etneo CT 2 3963 3963
Calatabiano CT 3 5308 9271
Fiumefreddo di Sicilia CT 3 9623 18894
Gaggi ME 5 3184 22078
Linguaglossa CT 5 5403 27481
Mascali CT 7 14282 41763
Giardini-Naxos ME 8 9415 51178
Castelmola ME 8 1088 52266
Taormina ME 8 10960 63226
Graniti ME 9 1492 64718
Motta Camastra ME 9 845 65563
Sant'Alfio CT 9 1582 67145
Riposto CT 10 14838 81983
Giarre CT 10 27659 109642
Castiglione di Sicilia CT 10 3215 112857
Francavilla di Sicilia ME 11 3945 116802
Letojanni ME 12 2861 119663
Mongiuffi Melia ME 12 600 120263
Gallodoro ME 13 367 120630
Milo CT 13 1087 121717
Roccafiorita ME 14 197 121914
Limina ME 15 836 122750
Santa Venerina CT 15 8592 131342
Moio Alcantara ME 16 717 132059
Zafferana Etnea CT 16 9517 141576
Forza d'Agrò ME 16 911 142487
Malvagna ME 17 733 143220
Sant'Alessio Siculo ME 17 1554 144774
Antillo ME 18 919 145693
Fondachelli-Fantina ME 19 1019 146712
Casalvecchio Siculo ME 19 842 147554
Savoca ME 20 1732 149286

Municipalities with at least 50000 inhabitants

An earthquake occurred to
23 Km N of Acireale (52622 inhabitants)
36 Km N of Catania (314555 inhabitants)
51 Km SW of Reggio di Calabria (183035 inhabitants)
52 Km SW of Messina (238439 inhabitants)
85 Km N of Siracusa (122291 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 2021-10-25
37.819 15.198 13 2021-10-25
Sala Operativa INGV_OE (Catania) 96979171
Preferred location and magnitude until now.
Origin information


Field Value
Time (UTC) 2021-10-25 11:23:48
Latitude 37.8190
Longitude 15.1980
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 96979171


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) 1000
Confidence level of the uncertainty (%) 68


Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 152
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) 0.1
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 0.1
Num. used stations
Type of magnitude ML
Reference to an origin 96979171
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2021-10-25 11:30:30
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