Earthquake with magnitude of ML 1.2 on date 11-09-2021 and time 06:07:32 (UTC) in region 11 km N Ragalna (CT)

A magnitude ML 1.2 earthquake occured in region: 11 km N Ragalna (CT), on

  • 11-09-2021 06:07:32 (UTC)
  • 11-09-2021 08:07:32 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.726, 14.942 at 9 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
Ragalna CT 11 3924 3924
Biancavilla CT 11 24007 27931
Bronte CT 12 19172 47103
Adrano CT 12 36122 83225
Santa Maria di Licodia CT 13 7641 90866
Maletto CT 13 3920 94786
Nicolosi CT 14 7463 102249
Zafferana Etnea CT 15 9517 111766
Belpasso CT 15 28108 139874
Milo CT 15 1087 140961
Pedara CT 16 14102 155063
PaternĂ² CT 17 48228 203291
Randazzo CT 17 10900 214191
Trecastagni CT 17 10910 225101
Santa Venerina CT 18 8592 233693
Sant'Alfio CT 18 1582 235275
Camporotondo Etneo CT 18 5023 240298
San Pietro Clarenza CT 19 7743 248041
Viagrande CT 19 8563 256604
Maniace CT 19 3765 260369
Mascalucia CT 20 31958 292327

Municipalities with at least 50000 inhabitants

An earthquake occurred to
23 Km NW of Acireale (52622 inhabitants)
28 Km NW of Catania (314555 inhabitants)
75 Km SW of Reggio di Calabria (183035 inhabitants)
75 Km SW of Messina (238439 inhabitants)
80 Km NW of Siracusa (122291 inhabitants)
82 Km E of Caltanissetta (63360 inhabitants)
91 Km N of Ragusa (73313 inhabitants)
93 Km NE of Vittoria (63339 inhabitants)
95 Km NE of Gela (75827 inhabitants)
98 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 2021-09-11
06:07:32
37.726 14.942 9 2021-09-11
06:17:20
Sala Operativa INGV_OE (Catania) 95291711
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-09-11 06:07:32
Latitude 37.7260
Longitude 14.9420
Depth (km) 9 (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 95291711

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) 500
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) 0.12
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 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 95291711
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2021-09-11 06:17:20
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