Earthquake with magnitude of ML 1.9 on date 02-10-2021 and time 08:30:58 (Italy) in region 2 km E Ragalna (CT)

A magnitude ML 1.9 earthquake occured in region: 2 km E Ragalna (CT), on

  • 02-10-2021 06:30:58 (UTC)
  • 02-10-2021 08:30:58 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.63, 14.965 at 3 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 2 3924 3924
Belpasso CT 4 28108 32032
Nicolosi CT 6 7463 39495
Santa Maria di Licodia CT 7 7641 47136
Camporotondo Etneo CT 8 5023 52159
PaternĂ² CT 8 48228 100387
San Pietro Clarenza CT 8 7743 108130
Pedara CT 9 14102 122232
Biancavilla CT 9 24007 146239
Mascalucia CT 10 31958 178197
Trecastagni CT 10 10910 189107
Tremestieri Etneo CT 11 20589 209696
Gravina di Catania CT 12 25838 235534
Viagrande CT 12 8563 244097
Adrano CT 12 36122 280219
Misterbianco CT 13 49410 329629
San Giovanni la Punta CT 13 23060 352689
Sant'Agata li Battiati CT 13 9479 362168
Motta Sant'Anastasia CT 13 12116 374284
Aci Bonaccorsi CT 13 3524 377808
Zafferana Etnea CT 14 9517 387325
Aci Sant'Antonio CT 15 17984 405309
San Gregorio di Catania CT 15 11966 417275
Valverde CT 15 7840 425115
Aci Catena CT 16 29851 454966
Santa Venerina CT 17 8592 463558
Milo CT 17 1087 464645
Catania CT 18 314555 779200
Aci Castello CT 18 18723 797923
Acireale CT 18 52622 850545
Centuripe EN 20 5470 856015

Municipalities with at least 50000 inhabitants

An earthquake occurred to
18 Km NW of Catania (314555 inhabitants)
18 Km W of Acireale (52622 inhabitants)
70 Km NW of Siracusa (122291 inhabitants)
80 Km SW of Reggio di Calabria (183035 inhabitants)
81 Km N of Ragusa (73313 inhabitants)
81 Km E of Caltanissetta (63360 inhabitants)
82 Km SW of Messina (238439 inhabitants)
85 Km NE of Vittoria (63339 inhabitants)
88 Km N of Modica (54633 inhabitants)
89 Km NE of Gela (75827 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 earthquake resentment in the area, expressed in terms of intensity on the MCS scale (Mercalli-Cancani-Sieberg). Intensities are determined using data from questionnaires collected on the website The intensities shown are determined considering all the reports received from each municipality, and are all the more reliable the greater the number of questionnaires. The collected data are subjected to an automatic statistical filter, but are not checked individually. In particular, intensities greater than or equal to the VI degree of the MCS or EMS scale require on-site verification by specialized personnel. The black star is the epicenter of the earthquake that occurred. This map is updated every time citizens fill out new questionnaires. The number of questionnaires processed to obtain this map, the date and time of the last update are shown at the top right.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
ML 1.9 2021-10-02
37.63 14.965 3 2021-10-02
Sala Operativa INGV_OE (Catania) 96124081
Preferred location and magnitude until now.
Origin information


Field Value
Time (UTC) 2021-10-02 06:30:58
Latitude 37.6300
Longitude 14.9650
Depth (km) 3 (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 96124081


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
Confidence level of the uncertainty (%) 68


Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 171
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) 0.24
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 1.9
Uncertainty 0.1
Num. used stations
Type of magnitude ML
Reference to an origin 96124081
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2021-10-02 06:51:46
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