Earthquake with magnitude of ML 1.5 on date 18-11-2021 and time 10:56:50 (Italy) in region 5 km N Nicolosi (CT)

A magnitude ML 1.5 earthquake occured in region: 5 km N Nicolosi (CT), on

  • 18-11-2021 09:56:50 (UTC)
  • 18-11-2021 10:56:50 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.656, 15.02 at 8 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 5 7463 7463
Pedara CT 6 14102 21565
Trecastagni CT 7 10910 32475
Ragalna CT 8 3924 36399
Belpasso CT 8 28108 64507
Viagrande CT 8 8563 73070
Zafferana Etnea CT 9 9517 82587
San Pietro Clarenza CT 9 7743 90330
Mascalucia CT 10 31958 122288
Camporotondo Etneo CT 10 5023 127311
Tremestieri Etneo CT 10 20589 147900
Aci Bonaccorsi CT 10 3524 151424
Aci Sant'Antonio CT 11 17984 169408
San Giovanni la Punta CT 11 23060 192468
Gravina di Catania CT 11 25838 218306
Santa Venerina CT 11 8592 226898
Milo CT 11 1087 227985
Sant'Agata li Battiati CT 12 9479 237464
Aci Catena CT 12 29851 267315
Santa Maria di Licodia CT 12 7641 274956
Valverde CT 13 7840 282796
San Gregorio di Catania CT 13 11966 294762
Biancavilla CT 13 24007 318769
PaternĂ² CT 13 48228 366997
Acireale CT 14 52622 419619
Sant'Alfio CT 15 1582 421201
Misterbianco CT 15 49410 470611
Aci Castello CT 16 18723 489334
Adrano CT 16 36122 525456
Motta Sant'Anastasia CT 17 12116 537572
Giarre CT 17 27659 565231
Catania CT 18 314555 879786
Riposto CT 18 14838 894624
Mascali CT 19 14282 908906

Municipalities with at least 50000 inhabitants

An earthquake occurred to
14 Km W of Acireale (52622 inhabitants)
18 Km NW of Catania (314555 inhabitants)
70 Km NW of Siracusa (122291 inhabitants)
75 Km SW of Reggio di Calabria (183035 inhabitants)
76 Km SW of Messina (238439 inhabitants)
85 Km N of Ragusa (73313 inhabitants)
86 Km E of Caltanissetta (63360 inhabitants)
89 Km NE of Vittoria (63339 inhabitants)
91 Km N of Modica (54633 inhabitants)
94 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 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 1.5 2021-11-18
09:56:50
37.656 15.02 8 2021-11-18
10:06:46
Sala Operativa INGV_OE (Catania) 97549371
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-11-18 09:56:50
Latitude 37.6560
Longitude 15.0200
Depth (km) 8 (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 97549371

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) 300
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 59
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) 0.19
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:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 97549371
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2021-11-18 10:06:46
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