Earthquake with magnitude of ML 1.1 on date 24-09-2021 and time 14:33:08 (Italy) in region 5 km W Milo (CT)

A magnitude ML 1.1 earthquake occured in region: 5 km W Milo (CT), on

  • 24-09-2021 12:33:08 (UTC)
  • 24-09-2021 14:33:08 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.739, 15.066 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
Milo CT 5 1087 1087
Zafferana Etnea CT 6 9517 10604
Sant'Alfio CT 7 1582 12186
Santa Venerina CT 9 8592 20778
Giarre CT 11 27659 48437
Mascali CT 12 14282 62719
Riposto CT 12 14838 77557
Piedimonte Etneo CT 13 3963 81520
Pedara CT 13 14102 95622
Linguaglossa CT 13 5403 101025
Trecastagni CT 14 10910 111935
Fiumefreddo di Sicilia CT 14 9623 121558
Nicolosi CT 14 7463 129021
Viagrande CT 14 8563 137584
Aci Sant'Antonio CT 16 17984 155568
Aci Bonaccorsi CT 16 3524 159092
Ragalna CT 16 3924 163016
Aci Catena CT 17 29851 192867
Acireale CT 17 52622 245489
Castiglione di Sicilia CT 17 3215 248704
Calatabiano CT 17 5308 254012
Moio Alcantara ME 18 717 254729
Belpasso CT 18 28108 282837
Tremestieri Etneo CT 18 20589 303426
San Giovanni la Punta CT 18 23060 326486
Mascalucia CT 18 31958 358444
Valverde CT 18 7840 366284
San Pietro Clarenza CT 19 7743 374027
Randazzo CT 19 10900 384927
Francavilla di Sicilia ME 19 3945 388872
Gaggi ME 19 3184 392056
San Gregorio di Catania CT 20 11966 404022
Gravina di Catania CT 20 25838 429860
Camporotondo Etneo CT 20 5023 434883
Motta Camastra ME 20 845 435728
Sant'Agata li Battiati CT 20 9479 445207

Municipalities with at least 50000 inhabitants

An earthquake occurred to
17 Km NW of Acireale (52622 inhabitants)
26 Km N of Catania (314555 inhabitants)
65 Km SW of Reggio di Calabria (183035 inhabitants)
67 Km SW of Messina (238439 inhabitants)
78 Km N of Siracusa (122291 inhabitants)
93 Km E of Caltanissetta (63360 inhabitants)
95 Km N of Ragusa (73313 inhabitants)
99 Km NE of Vittoria (63339 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
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 the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Reviewed
Rev200
ML 1.1 2021-09-24
12:33:08
37.739 15.066 4 2021-09-24
12:38:52
Sala Operativa INGV_OE (Catania) 95831731
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-24 12:33:08
Latitude 37.7390
Longitude 15.0660
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 95831731

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
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 82
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) 0.09
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:1.1

Field Value
Value 1.1
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 95831731
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2021-09-24 12:38:52
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