Earthquake with magnitude of ML 1.3 on date 10-01-2021 and time 07:00:52 (UTC) in region 4 km NW Sant'Alfio (CT)

A magnitude ML 1.3 earthquake occured in region: 4 km NW Sant'Alfio (CT), on

  • 10-01-2021 07:00:52 (UTC)
  • 10-01-2021 08:00:52 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.77, 15.12 at 8 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 4 1582 1582
Milo CT 5 1087 2669
Piedimonte Etneo CT 7 3963 6632
Mascali CT 7 14282 20914
Giarre CT 7 27659 48573
Zafferana Etnea CT 8 9517 58090
Linguaglossa CT 9 5403 63493
Fiumefreddo di Sicilia CT 9 9623 73116
Riposto CT 9 14838 87954
Santa Venerina CT 9 8592 96546
Calatabiano CT 12 5308 101854
Castiglione di Sicilia CT 13 3215 105069
Gaggi ME 14 3184 108253
Francavilla di Sicilia ME 15 3945 112198
Motta Camastra ME 15 845 113043
Moio Alcantara ME 16 717 113760
Giardini-Naxos ME 16 9415 123175
Graniti ME 17 1492 124667
Trecastagni CT 17 10910 135577
Pedara CT 17 14102 149679
Castelmola ME 17 1088 150767
Viagrande CT 18 8563 159330
Taormina ME 18 10960 170290
Malvagna ME 18 733 171023
Acireale CT 18 52622 223645
Aci Sant'Antonio CT 18 17984 241629
Aci Catena CT 18 29851 271480
Nicolosi CT 19 7463 278943
Aci Bonaccorsi CT 19 3524 282467
Randazzo CT 19 10900 293367

Municipalities with at least 50000 inhabitants

An earthquake occurred to
18 Km N of Acireale (52622 inhabitants)
30 Km N of Catania (314555 inhabitants)
60 Km SW of Reggio di Calabria (183035 inhabitants)
61 Km SW of Messina (238439 inhabitants)
80 Km N of Siracusa (122291 inhabitants)
98 Km E of Caltanissetta (63360 inhabitants)
100 Km NE of Ragusa (73313 inhabitants)
Recent and historical Seismicity
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled 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 1.3 2021-01-10
07:00:52
37.77 15.12 8 2021-01-10
07:13:15
Sala Operativa INGV_OE (Catania) 86137561
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-01-10 07:00:52
Latitude 37.77
Longitude 15.12
Depth (km) 8 (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 86137561

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) 700
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 86
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) 0.06
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:1.3

Field Value
Value 1.3
Uncertainty 0.4
Num. used stations
Type of magnitude ML
Reference to an origin 86137561
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2021-01-10 07:13:15
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download