Earthquake with magnitude of ML 2.1 on date 22-08-2023 and time 01:17:09 (Italy) in region 2 km E Castiglione di Sicilia (CT)

A magnitude ML 2.1 earthquake occured in region: 2 km E Castiglione di Sicilia (CT), on

  • 21-08-2023 23:17:09 (UTC)
  • 22-08-2023 01:17:09 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.8770, 15.1460 at 14 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
Castiglione di Sicilia CT 2 3215 3215
Francavilla di Sicilia ME 3 3945 7160
Motta Camastra ME 3 845 8005
Linguaglossa CT 4 5403 13408
Gaggi ME 7 3184 16592
Graniti ME 7 1492 18084
Piedimonte Etneo CT 8 3963 22047
Moio Alcantara ME 9 717 22764
Malvagna ME 9 733 23497
Calatabiano CT 9 5308 28805
Fiumefreddo di Sicilia CT 11 9623 38428
Castelmola ME 12 1088 39516
Mongiuffi Melia ME 12 600 40116
Giardini-Naxos ME 12 9415 49531
Taormina ME 12 10960 60491
Roccafiorita ME 12 197 60688
Fondachelli-Fantina ME 13 1019 61707
Gallodoro ME 13 367 62074
Limina ME 13 836 62910
Roccella Valdemone ME 14 666 63576
Mascali CT 14 14282 77858
Letojanni ME 14 2861 80719
Antillo ME 14 919 81638
Sant'Alfio CT 15 1582 83220
Novara di Sicilia ME 16 1337 84557
Giarre CT 17 27659 112216
Santa Domenica Vittoria ME 17 980 113196
Riposto CT 17 14838 128034
Forza d'Agrò ME 17 911 128945
Milo CT 17 1087 130032
Randazzo CT 18 10900 140932
Sant'Alessio Siculo ME 18 1554 142486
Casalvecchio Siculo ME 18 842 143328
Savoca ME 19 1732 145060
Tripi ME 20 873 145933

Municipalities with at least 50000 inhabitants

An earthquake occurred to
29 Km N of Acireale (52622 inhabitants)
42 Km N of Catania (314555 inhabitants)
50 Km SW of Messina (238439 inhabitants)
51 Km SW of Reggio di Calabria (183035 inhabitants)
92 Km N of Siracusa (122291 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 2.1 2023-08-21
23:17:09
37.877 15.146 14 2023-08-21
23:24:21
Sala Operativa INGV_OE (Catania) 120365821
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2023-08-21 23:17:09
Latitude 37.8770
Longitude 15.1460
Depth (km) 14 (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 120365821

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) 400.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 113
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) 0.18
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:2.1

Field Value
Value 2.1
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 120365821
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2023-08-21 23:24:21
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
Waveforms Seismic signals in miniseed + resp format Download