Earthquake with magnitude of ML 1.8 on date 11-01-2021 and time 06:58:56 (Italy) in region 6 km N Ragalna (CT)

A magnitude ML 1.8 earthquake occured in region: 6 km N Ragalna (CT), on

  • 11-01-2021 05:58:56 (UTC)
  • 11-01-2021 06:58:56 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.684, 14.927 at 0 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
Ragalna CT 6 3924 3924
Biancavilla CT 7 24007 27931
Santa Maria di Licodia CT 8 7641 35572
Adrano CT 9 36122 71694
Belpasso CT 11 28108 99802
Nicolosi CT 12 7463 107265
PaternĂ² CT 12 48228 155493
Pedara CT 14 14102 169595
Bronte CT 14 19172 188767
Camporotondo Etneo CT 15 5023 193790
San Pietro Clarenza CT 15 7743 201533
Trecastagni CT 15 10910 212443
Zafferana Etnea CT 16 9517 221960
Mascalucia CT 17 31958 253918
Viagrande CT 17 8563 262481
Maletto CT 17 3920 266401
Milo CT 17 1087 267488
Tremestieri Etneo CT 18 20589 288077
Centuripe EN 18 5470 293547
Gravina di Catania CT 18 25838 319385
Aci Bonaccorsi CT 19 3524 322909
Santa Venerina CT 19 8592 331501
San Giovanni la Punta CT 19 23060 354561
Misterbianco CT 19 49410 403971
Motta Sant'Anastasia CT 19 12116 416087
Sant'Agata li Battiati CT 19 9479 425566
Aci Sant'Antonio CT 20 17984 443550

Municipalities with at least 50000 inhabitants

An earthquake occurred to
23 Km W of Acireale (52622 inhabitants)
25 Km NW of Catania (314555 inhabitants)
77 Km NW of Siracusa (122291 inhabitants)
79 Km SW of Reggio di Calabria (183035 inhabitants)
79 Km E of Caltanissetta (63360 inhabitants)
79 Km SW of Messina (238439 inhabitants)
86 Km N of Ragusa (73313 inhabitants)
89 Km NE of Vittoria (63339 inhabitants)
91 Km NE of Gela (75827 inhabitants)
93 Km N of Modica (54633 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 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 ( 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
ML 1.8 2021-01-11
37.684 14.927 0 2021-01-11
Sala Operativa INGV_OE (Catania) 86164821
Preferred location and magnitude until now.
Origin information


Field Value
Time (UTC) 2021-01-11 05:58:56
Latitude 37.6840
Longitude 14.9270
Depth (km) 0 (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 86164821


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) 200
Confidence level of the uncertainty (%) 68


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) 0.15
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 1.8
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 86164821
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2021-01-11 06:39:14
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