Earthquake with magnitude of ML 1.2 on date 11-09-2021 and time 13:18:16 (UTC) in region 5 km W Zafferana Etnea (CT)

A magnitude ML 1.2 earthquake occured in region: 5 km W Zafferana Etnea (CT), on

  • 11-09-2021 13:18:16 (UTC)
  • 11-09-2021 15:18:16 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.695, 15.044 at 12 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
Zafferana Etnea CT 5 9517 9517
Milo CT 7 1087 10604
Santa Venerina CT 8 8592 19196
Pedara CT 9 14102 33298
Nicolosi CT 9 7463 40761
Trecastagni CT 9 10910 51671
Viagrande CT 10 8563 60234
Sant'Alfio CT 11 1582 61816
Ragalna CT 12 3924 65740
Aci Bonaccorsi CT 12 3524 69264
Aci Sant'Antonio CT 12 17984 87248
Belpasso CT 13 28108 115356
Giarre CT 13 27659 143015
Aci Catena CT 13 29851 172866
Tremestieri Etneo CT 13 20589 193455
Mascalucia CT 14 31958 225413
San Pietro Clarenza CT 14 7743 233156
San Giovanni la Punta CT 14 23060 256216
Acireale CT 14 52622 308838
Camporotondo Etneo CT 14 5023 313861
Valverde CT 15 7840 321701
Riposto CT 15 14838 336539
Gravina di Catania CT 15 25838 362377
Mascali CT 15 14282 376659
San Gregorio di Catania CT 15 11966 388625
Sant'Agata li Battiati CT 15 9479 398104
Santa Maria di Licodia CT 16 7641 405745
Biancavilla CT 16 24007 429752
Piedimonte Etneo CT 17 3963 433715
Aci Castello CT 18 18723 452438
PaternĂ² CT 18 48228 500666
Fiumefreddo di Sicilia CT 18 9623 510289
Linguaglossa CT 19 5403 515692
Adrano CT 19 36122 551814
Misterbianco CT 20 49410 601224

Municipalities with at least 50000 inhabitants

An earthquake occurred to
14 Km NW of Acireale (52622 inhabitants)
22 Km N of Catania (314555 inhabitants)
70 Km SW of Reggio di Calabria (183035 inhabitants)
72 Km SW of Messina (238439 inhabitants)
74 Km N of Siracusa (122291 inhabitants)
89 Km E of Caltanissetta (63360 inhabitants)
90 Km N of Ragusa (73313 inhabitants)
94 Km NE of Vittoria (63339 inhabitants)
96 Km N of Modica (54633 inhabitants)
99 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 1.2 2021-09-11
13:18:16
37.695 15.044 12 2021-09-11
13:24:12
Sala Operativa INGV_OE (Catania) 95304861
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-11 13:18:16
Latitude 37.6950
Longitude 15.0440
Depth (km) 12 (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 95304861

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) 700
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 120
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

ML:1.2

Field Value
Value 1.2
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 95304861
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2021-09-11 13:24:12
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