Earthquake with magnitude of ML 1.9 on date 18-06-2021 and time 09:41:21 (Italy) in region 2 km N Motta Sant'Anastasia (CT)

A magnitude ML 1.9 earthquake occured in region: 2 km N Motta Sant'Anastasia (CT), on

  • 18-06-2021 07:41:21 (UTC)
  • 18-06-2021 09:41:21 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.531, 14.969 at 6 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
Motta Sant'Anastasia CT 2 12116 12116
Misterbianco CT 4 49410 61526
Camporotondo Etneo CT 5 5023 66549
San Pietro Clarenza CT 7 7743 74292
Belpasso CT 7 28108 102400
PaternĂ² CT 8 48228 150628
Gravina di Catania CT 9 25838 176466
Mascalucia CT 9 31958 208424
Sant'Agata li Battiati CT 10 9479 217903
Tremestieri Etneo CT 11 20589 238492
Nicolosi CT 11 7463 245955
Catania CT 11 314555 560510
Ragalna CT 11 3924 564434
Santa Maria di Licodia CT 12 7641 572075
San Giovanni la Punta CT 12 23060 595135
Pedara CT 13 14102 609237
San Gregorio di Catania CT 13 11966 621203
Trecastagni CT 14 10910 632113
Viagrande CT 14 8563 640676
Aci Bonaccorsi CT 15 3524 644200
Valverde CT 15 7840 652040
Biancavilla CT 15 24007 676047
Aci Castello CT 16 18723 694770
Aci Sant'Antonio CT 16 17984 712754
Aci Catena CT 17 29851 742605
Adrano CT 19 36122 778727
Acireale CT 20 52622 831349

Municipalities with at least 50000 inhabitants

An earthquake occurred to
11 Km W of Catania (314555 inhabitants)
20 Km SW of Acireale (52622 inhabitants)
60 Km NW of Siracusa (122291 inhabitants)
71 Km N of Ragusa (73313 inhabitants)
75 Km NE of Vittoria (63339 inhabitants)
77 Km N of Modica (54633 inhabitants)
80 Km E of Caltanissetta (63360 inhabitants)
82 Km NE of Gela (75827 inhabitants)
88 Km SW of Reggio di Calabria (183035 inhabitants)
90 Km SW of Messina (238439 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 2021-06-18
07:41:21
37.531 14.969 6 2021-06-18
07:53:01
Sala Operativa INGV_OE (Catania) 91482991
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-06-18 07:41:21
Latitude 37.5310
Longitude 14.9690
Depth (km) 6 (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 91482991

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) 142
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) 0.32
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 0.3
Num. used stations
Type of magnitude ML
Reference to an origin 91482991
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2021-06-18 07:53:01
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