Earthquake with magnitude of ML 1.2 on date 07-09-2021 and time 02:51:45 (UTC) in region 2 km NE Sant'Alfio (CT)

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

  • 07-09-2021 02:51:45 (UTC)
  • 07-09-2021 04:51:45 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.7550, 15.1590 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
Sant'Alfio CT 2 1582 1582
Mascali CT 3 14282 15864
Giarre CT 4 27659 43523
Riposto CT 5 14838 58361
Milo CT 5 1087 59448
Piedimonte Etneo CT 6 3963 63411
Fiumefreddo di Sicilia CT 6 9623 73034
Santa Venerina CT 8 8592 81626
Zafferana Etnea CT 8 9517 91143
Linguaglossa CT 10 5403 96546
Calatabiano CT 10 5308 101854
Gaggi ME 13 3184 105038
Giardini-Naxos ME 14 9415 114453
Castiglione di Sicilia CT 15 3215 117668
Taormina ME 15 10960 128628
Castelmola ME 16 1088 129716
Motta Camastra ME 16 845 130561
Acireale CT 16 52622 183183
Graniti ME 16 1492 184675
Francavilla di Sicilia ME 17 3945 188620
Trecastagni CT 17 10910 199530
Aci Sant'Antonio CT 17 17984 217514
Viagrande CT 17 8563 226077
Aci Catena CT 17 29851 255928
Pedara CT 18 14102 270030
Aci Bonaccorsi CT 18 3524 273554
Moio Alcantara ME 19 717 274271
Letojanni ME 19 2861 277132
Nicolosi CT 19 7463 284595
Mongiuffi Melia ME 20 600 285195
Valverde CT 20 7840 293035

Municipalities with at least 50000 inhabitants

An earthquake occurred to
16 Km N of Acireale (52622 inhabitants)
29 Km N of Catania (314555 inhabitants)
58 Km SW of Reggio di Calabria (183035 inhabitants)
60 Km SW of Messina (238439 inhabitants)
78 Km N of Siracusa (122291 inhabitants)
100 Km NE of Ragusa (73313 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev200
ML 1.2 2021-09-07
02:51:45
37.755 15.159 4 2021-09-07
03:28:14
Sala Operativa INGV_OE (Catania) 95134301
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-07 02:51:45
Latitude 37.7550
Longitude 15.1590
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 95134301

Uncertainty

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) 300.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 116
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) 0.22
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

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 95134301
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2021-09-07 03:28:14
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download