Earthquake with magnitude of ML 1.9 on date 02-10-2021 and time 06:30:58 (UTC) 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
Biancavilla CT 9 24007 132137
Pedara CT 9 14102 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
Acireale CT 18 52622 831822
Aci Castello CT 18 18723 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
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 1.9 2021-10-02
06:30:58
37.63 14.965 3 2021-10-02
06:51:46
Sala Operativa INGV_OE (Catania) 96124081
Preferred location and magnitude until now.
Origin information

Origin

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

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) 400
Confidence level of the uncertainty (%) 68

Quality

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

ML:1.9

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
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download