Earthquake with magnitude of ML 1.2 on date 26-09-2021 and time 22:47:42 (Italy) in region 2 km SW Zafferana Etnea (CT)

A magnitude ML 1.2 earthquake occured in region: 2 km SW Zafferana Etnea (CT), on

  • 26-09-2021 20:47:42 (UTC)
  • 26-09-2021 22:47:42 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.675, 15.095 at 2 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 2 9517 9517
Santa Venerina CT 4 8592 18109
Milo CT 6 1087 19196
Trecastagni CT 7 10910 30106
Viagrande CT 7 8563 38669
Pedara CT 7 14102 52771
Aci Sant'Antonio CT 8 17984 70755
Aci Bonaccorsi CT 9 3524 74279
Sant'Alfio CT 9 1582 75861
Nicolosi CT 9 7463 83324
Aci Catena CT 9 29851 113175
Acireale CT 9 52622 165797
Giarre CT 10 27659 193456
San Giovanni la Punta CT 11 23060 216516
Valverde CT 11 7840 224356
Tremestieri Etneo CT 11 20589 244945
Riposto CT 12 14838 259783
Mascalucia CT 12 31958 291741
San Gregorio di Catania CT 12 11966 303707
San Pietro Clarenza CT 13 7743 311450
Mascali CT 13 14282 325732
Sant'Agata li Battiati CT 13 9479 335211
Gravina di Catania CT 13 25838 361049
Belpasso CT 14 28108 389157
Aci Castello CT 14 18723 407880
Camporotondo Etneo CT 14 5023 412903
Ragalna CT 15 3924 416827
Piedimonte Etneo CT 17 3963 420790
Fiumefreddo di Sicilia CT 17 9623 430413
Misterbianco CT 19 49410 479823
Catania CT 19 314555 794378
Linguaglossa CT 19 5403 799781
Santa Maria di Licodia CT 19 7641 807422

Municipalities with at least 50000 inhabitants

An earthquake occurred to
9 Km NW of Acireale (52622 inhabitants)
19 Km N of Catania (314555 inhabitants)
68 Km SW of Reggio di Calabria (183035 inhabitants)
71 Km N of Siracusa (122291 inhabitants)
71 Km SW of Messina (238439 inhabitants)
89 Km NE of Ragusa (73313 inhabitants)
93 Km E of Caltanissetta (63360 inhabitants)
95 Km NE of Vittoria (63339 inhabitants)
95 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 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 http://www.hsit.it. 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
Reviewed
Rev200
ML 1.2 2021-09-26
20:47:42
37.675 15.095 2 2021-09-26
20:57:19
Sala Operativa INGV_OE (Catania) 95918481
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-26 20:47:42
Latitude 37.6750
Longitude 15.0950
Depth (km) 2 (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 95918481

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) 88
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) 0.07
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 0.1
Num. used stations
Type of magnitude ML
Reference to an origin 95918481
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2021-09-26 20:57:19
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