Earthquake with magnitude of ML 1.8 on date 15-11-2021 and time 19:04:45 (Italy) in region 3 km SW Leonforte (EN)

A magnitude ML 1.8 earthquake occured in region: 3 km SW Leonforte (EN), on

  • 15-11-2021 18:04:45 (UTC)
  • 15-11-2021 19:04:45 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.623, 14.366 at 46 km depth.

The earthquake was located by: Sala Sismica INGV-Roma.

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
Leonforte EN 3 13439 13439
Assoro EN 5 5191 18630
Nissoria EN 8 3000 21630
Calascibetta EN 9 4528 26158
Enna EN 10 28019 54177
Valguarnera Caropepe EN 14 7866 62043
Nicosia EN 14 13899 75942
Agira EN 15 8345 84287
Sperlinga EN 16 805 85092
Villarosa EN 17 4937 90029
Gagliano Castelferrato EN 18 3593 93622

Municipalities with at least 50000 inhabitants

An earthquake occurred to
30 Km NE of Caltanissetta (63360 inhabitants)
63 Km N of Gela (75827 inhabitants)
65 Km W of Catania (314555 inhabitants)
71 Km W of Acireale (52622 inhabitants)
76 Km N of Vittoria (63339 inhabitants)
77 Km E of Agrigento (59770 inhabitants)
84 Km NW of Ragusa (73313 inhabitants)
91 Km SE of Bagheria (55387 inhabitants)
92 Km NW 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
Rev100
ML 1.8 2021-11-15
18:04:45
37.6232 14.3663 46 2021-11-15
18:31:38
Sala Sismica INGV-Roma 97483521
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-11-15 18:04:45 ± 0.22
Latitude 37.6232 ± 0.0117
Longitude 14.3663 ± 0.0182
Depth (km) 46 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 100 -> SURVEY-INGV
Event type earthquake
Origin ID 97483521

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1384
Semi-minor axis of confidence ellipse (meter) 1166
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 241
Circular confidence region, given by single value of horizontal uncertainty (meter) 1380
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 107
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 14
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.31
Epicentral distance of station closest to the epicenter (degree) 0
Epicentral distance of station farthest from the epicenter (degree) 0.72935
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 9
Magnitude information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 8
Type of magnitude ML
Reference to an origin 97483521
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-11-15 18:31:38
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.GIZZ.HHZ. 2021-11-15T18:05:45.37 3.0 undecidable manual Sg 1.16 0
IX.SCL3.EHZ.02 2021-11-15T18:05:37.49 3.0 undecidable manual Pn 1.63 0
IV.HAGA.HHZ. 2021-11-15T18:05:10.31 0.6 undecidable manual S 118 0.7114 103 0.34 45
IV.SSY.HHZ. 2021-11-15T18:05:10.89 0.3 undecidable manual S 129 0.7293 102 0.5 65
IV.HLNI.HHZ. 2021-11-15T18:05:04.60 0.3 undecidable manual S 124 0.4856 115 -0.26 74
IV.RAFF.HHE. 2021-11-15T18:05:03.39 0.3 undecidable manual S 180 0.4002 123 0.32 74
IV.MPNC.HHZ. 2021-11-15T18:05:01.58 3.0 undecidable manual P -1.39 0
IV.HAGA.HHZ. 2021-11-15T18:04:59.41 0.3 undecidable manual P 118 0.7114 103 -0.21 71
IV.GALF.HNZ. 2021-11-15T18:04:59.55 0.3 undecidable manual S 61 0.1808 150 0.1 80
IV.SSY.HHZ. 2021-11-15T18:04:59.97 0.1 undecidable manual P 129 0.7293 102 0.1 95
IV.CLTA.HHE. 2021-11-15T18:04:57.81 0.6 undecidable manual P 215 0.5648 110 0.12 50
IV.GIB.HHE. 2021-11-15T18:04:56.70 0.3 undecidable manual P 324 0.4551 118 0.41 72
IV.MSFR.HHE. 2021-11-15T18:04:56.39 0.3 undecidable manual P 23 0.4479 119 0.19 75
IV.HLNI.HHZ. 2021-11-15T18:04:55.94 0.1 undecidable manual P 124 0.4856 115 -0.74 86
IV.CSLB.HHZ. 2021-11-15T18:04:55.42 0.3 undecidable manual P 322 0.3975 123 -0.19 75
IV.RAFF.HHE. 2021-11-15T18:04:55.41 0.1 undecidable manual P 180 0.4002 123 -0.23 100
IV.GALF.HNZ. 2021-11-15T18:04:53.46 0.3 undecidable manual P 61 0.1808 150 -0.09 81
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.HLNI.HHE. ML:1.2 2.646032E-5 0.0896 AML other m 2021-11-15T18:05:06.82
IV.HLNI.HHN. ML:1.2 2.4895105E-5 0.0768 AML other m 2021-11-15T18:05:06.41
IV.HAGA.HHE. ML:1.8 7.5841665E-5 0.256 AML other m 2021-11-15T18:05:11.51
IV.HAGA.HHN. ML:1.8 7.922324E-5 0.0896 AML other m 2021-11-15T18:05:11.49
IV.SSY.HHE. ML:2 0.000105374025 0.1024 AML other m 2021-11-15T18:05:12.39
IV.SSY.HHN. ML:2.4 0.0002783078 0.0768 AML other m 2021-11-15T18:05:12.83
IV.SSY.HNE. ML:1.9 9.112659E-5 0.2304 AML other m 2021-11-15T18:05:14.21
IV.SSY.HNN. ML:1.9 9.150325E-5 0.1024 AML other m 2021-11-15T18:05:12.88
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