Earthquake with magnitude of ML 1.0 on date 12-07-2021 and time 17:19:49 (Italy) in region 3 km W Zafferana Etnea (CT)

A magnitude ML 1.0 earthquake occured in region: 3 km W Zafferana Etnea (CT), on

  • 12-07-2021 15:19:49 (UTC)
  • 12-07-2021 17:19:49 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.7, 15.074 at 4 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 3 9517 9517
Milo CT 5 1087 10604
Santa Venerina CT 6 8592 19196
Sant'Alfio CT 8 1582 20778
Trecastagni CT 9 10910 31688
Pedara CT 9 14102 45790
Viagrande CT 10 8563 54353
Nicolosi CT 10 7463 61816
Giarre CT 10 27659 89475
Aci Sant'Antonio CT 11 17984 107459
Aci Bonaccorsi CT 12 3524 110983
Riposto CT 12 14838 125821
Aci Catena CT 12 29851 155672
Mascali CT 13 14282 169954
Acireale CT 13 52622 222576
Tremestieri Etneo CT 14 20589 243165
San Giovanni la Punta CT 14 23060 266225
Mascalucia CT 14 31958 298183
Valverde CT 14 7840 306023
Ragalna CT 14 3924 309947
Belpasso CT 15 28108 338055
San Pietro Clarenza CT 15 7743 345798
Piedimonte Etneo CT 15 3963 349761
San Gregorio di Catania CT 15 11966 361727
Gravina di Catania CT 15 25838 387565
Sant'Agata li Battiati CT 16 9479 397044
Fiumefreddo di Sicilia CT 16 9623 406667
Camporotondo Etneo CT 16 5023 411690
Linguaglossa CT 17 5403 417093
Aci Castello CT 17 18723 435816
Santa Maria di Licodia CT 19 7641 443457
Biancavilla CT 19 24007 467464
Calatabiano CT 19 5308 472772

Municipalities with at least 50000 inhabitants

An earthquake occurred to
13 Km NW of Acireale (52622 inhabitants)
22 Km N of Catania (314555 inhabitants)
68 Km SW of Reggio di Calabria (183035 inhabitants)
69 Km SW of Messina (238439 inhabitants)
74 Km N of Siracusa (122291 inhabitants)
91 Km NE of Ragusa (73313 inhabitants)
92 Km E of Caltanissetta (63360 inhabitants)
96 Km NE of Vittoria (63339 inhabitants)
97 Km N of Modica (54633 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 1.0 2021-07-12
15:19:49
37.7 15.074 4 2021-07-12
15:24:59
Sala Operativa INGV_OE (Catania) 92673791
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-07-12 15:19:49
Latitude 37.7000
Longitude 15.0740
Depth (km) 4 (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 92673791

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) 200
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 110
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) 0.21
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

Field Value
Value 1
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 92673791
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2021-07-12 15:24:59
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