Earthquake with magnitude of ML 1.7 on date 17-09-2020 and time 19:37:56 (Italy) in region 1 km W Zafferana Etnea (CT)

A magnitude ML 1.7 earthquake occured in region: 1 km W Zafferana Etnea (CT), on

  • 17-09-2020 17:37:56 (UTC)
  • 17-09-2020 19:37:56 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.7, 15.09 at 5 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 1 9517 9517
Milo CT 4 1087 10604
Santa Venerina CT 4 8592 19196
Sant'Alfio CT 7 1582 20778
Trecastagni CT 9 10910 31688
Pedara CT 9 14102 45790
Giarre CT 9 27659 73449
Viagrande CT 9 8563 82012
Aci Sant'Antonio CT 10 17984 99996
Nicolosi CT 11 7463 107459
Aci Bonaccorsi CT 11 3524 110983
Riposto CT 11 14838 125821
Aci Catena CT 11 29851 155672
Acireale CT 11 52622 208294
Mascali CT 12 14282 222576
San Giovanni la Punta CT 13 23060 245636
Valverde CT 13 7840 253476
Tremestieri Etneo CT 13 20589 274065
Mascalucia CT 14 31958 306023
San Gregorio di Catania CT 14 11966 317989
San Pietro Clarenza CT 15 7743 325732
Piedimonte Etneo CT 15 3963 329695
Gravina di Catania CT 15 25838 355533
Sant'Agata li Battiati CT 15 9479 365012
Ragalna CT 15 3924 368936
Belpasso CT 15 28108 397044
Fiumefreddo di Sicilia CT 15 9623 406667
Camporotondo Etneo CT 16 5023 411690
Aci Castello CT 16 18723 430413
Linguaglossa CT 17 5403 435816
Calatabiano CT 19 5308 441124
Santa Maria di Licodia CT 20 7641 448765

Municipalities with at least 50000 inhabitants

An earthquake occurred to
11 Km NW of Acireale (52622 inhabitants)
21 Km N of Catania (314555 inhabitants)
67 Km SW of Reggio di Calabria (183035 inhabitants)
69 Km SW of Messina (238439 inhabitants)
73 Km N of Siracusa (122291 inhabitants)
91 Km NE of Ragusa (73313 inhabitants)
93 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
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled 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 1.7 2020-09-17
17:37:56
37.7 15.09 5 2020-09-17
17:49:01
Sala Operativa INGV_OE (Catania) 82988731
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-17 17:37:56
Latitude 37.70
Longitude 15.09
Depth (km) 5 (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 82988731

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) 69
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) 0.26
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:1.7

Field Value
Value 1.7
Uncertainty
Num. used stations
Type of magnitude ML
Reference to an origin 82988731
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2020-09-17 17:49:01
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download