Earthquake with magnitude of ML 1.6 on date 31-12-2018 and time 04:34:58 (Italy) in region 8 km N Ragalna (CT)

A magnitude ML 1.6 earthquake occured in region: 8 km N Ragalna (CT), on

  • 31-12-2018 03:34:58 (UTC)
  • 31-12-2018 04:34:58 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.7, 14.94 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 8 3924 3924
Biancavilla CT 9 24007 27931
Adrano CT 10 36122 64053
Santa Maria di Licodia CT 10 7641 71694
Nicolosi CT 13 7463 79157
Belpasso CT 13 28108 107265
Bronte CT 13 19172 126437
PaternĂ² CT 14 48228 174665
Pedara CT 14 14102 188767
Zafferana Etnea CT 15 9517 198284
Maletto CT 16 3920 202204
Trecastagni CT 16 10910 213114
Milo CT 16 1087 214201
Camporotondo Etneo CT 16 5023 219224
San Pietro Clarenza CT 16 7743 226967
Viagrande CT 17 8563 235530
Mascalucia CT 18 31958 267488
Santa Venerina CT 18 8592 276080
Tremestieri Etneo CT 18 20589 296669
Sant'Alfio CT 19 1582 298251
Aci Bonaccorsi CT 19 3524 301775
Gravina di Catania CT 19 25838 327613
Centuripe EN 19 5470 333083
San Giovanni la Punta CT 20 23060 356143
Randazzo CT 20 10900 367043
Aci Sant'Antonio CT 20 17984 385027

Municipalities with at least 50000 inhabitants

An earthquake occurred to
23 Km W of Acireale (52622 inhabitants)
26 Km NW of Catania (314555 inhabitants)
77 Km SW of Reggio di Calabria (183035 inhabitants)
77 Km SW of Messina (238439 inhabitants)
78 Km NW of Siracusa (122291 inhabitants)
80 Km E of Caltanissetta (63360 inhabitants)
88 Km N of Ragusa (73313 inhabitants)
91 Km NE of Vittoria (63339 inhabitants)
93 Km NE of Gela (75827 inhabitants)
95 Km N of Modica (54633 inhabitants)
Recent and historical Seismicity
Seismic hazard
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 ( 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 1.6 2018-12-31
37.7 14.94 0 2018-12-31
Sala Operativa INGV-OE (Catania) 64377521
Preferred location and magnitude until now.
Origin information


Field Value
Time (UTC) 2018-12-31 03:34:58 ± 0
Latitude 37.70
Longitude 14.94
Depth (km) 0 ± 0 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 200 -> SURVEY-INGV-CT
Event type earthquake
Origin ID 64377521


Field Value
Preferred uncertainty description
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) 0
Confidence level of the uncertainty (%) 68


Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree)
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)
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 1.6
Uncertainty 0
Num. used stations
Type of magnitude ML
Reference to an origin 64377521
Agency INGV
Autore Sala Operativa INGV-OE (Catania)
Time of creation (UTC) 2018-12-31 05:20:34
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download