Earthquake with magnitude of ML 1.0 on date 25-09-2020 and time 11:25:00 (UTC) in region 3 km SW Nicolosi (CT)

A magnitude ML 1.0 earthquake occured in region: 3 km SW Nicolosi (CT), on

  • 25-09-2020 11:25:00 (UTC)
  • 25-09-2020 13:25:00 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.6, 15.01 at 11 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
Nicolosi CT 3 7463 7463
San Pietro Clarenza CT 3 7743 15206
Belpasso CT 3 28108 43314
Camporotondo Etneo CT 3 5023 48337
Mascalucia CT 5 31958 80295
Pedara CT 5 14102 94397
Tremestieri Etneo CT 6 20589 114986
Gravina di Catania CT 6 25838 140824
Trecastagni CT 7 10910 151734
Ragalna CT 7 3924 155658
Sant'Agata li Battiati CT 7 9479 165137
San Giovanni la Punta CT 8 23060 188197
Viagrande CT 8 8563 196760
Misterbianco CT 8 49410 246170
Aci Bonaccorsi CT 9 3524 249694
San Gregorio di Catania CT 9 11966 261660
PaternĂ² CT 10 48228 309888
Motta Sant'Anastasia CT 10 12116 322004
Valverde CT 10 7840 329844
Aci Sant'Antonio CT 10 17984 347828
Santa Maria di Licodia CT 11 7641 355469
Aci Catena CT 12 29851 385320
Catania CT 12 314555 699875
Aci Castello CT 13 18723 718598
Biancavilla CT 13 24007 742605
Zafferana Etnea CT 14 9517 752122
Acireale CT 14 52622 804744
Santa Venerina CT 15 8592 813336
Milo CT 17 1087 814423
Adrano CT 17 36122 850545

Municipalities with at least 50000 inhabitants

An earthquake occurred to
12 Km NW of Catania (314555 inhabitants)
14 Km W of Acireale (52622 inhabitants)
65 Km NW of Siracusa (122291 inhabitants)
79 Km NE of Ragusa (73313 inhabitants)
80 Km SW of Reggio di Calabria (183035 inhabitants)
82 Km SW of Messina (238439 inhabitants)
83 Km NE of Vittoria (63339 inhabitants)
84 Km E of Caltanissetta (63360 inhabitants)
85 Km N of Modica (54633 inhabitants)
89 Km NE of Gela (75827 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 1.0 2020-09-25
11:25:00
37.6 15.01 11 2020-09-25
11:53:59
Sala Operativa INGV_OE (Catania) 83237751
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-25 11:25:00
Latitude 37.60
Longitude 15.01
Depth (km) 11 (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 83237751

Uncertainty

Field Value
Preferred uncertainty description
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) 0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 92
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
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
Num. used stations
Type of magnitude ML
Reference to an origin 83237751
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2020-09-25 11:53:59
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