Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 14-11-2021 and time 16:44:32 (UTC) in region 5 km NE Gagliano Castelferrato (EN)

A magnitude ML 1.7 earthquake occured in region: 5 km NE Gagliano Castelferrato (EN), on

  • 14-11-2021 16:44:32 (UTC)
  • 14-11-2021 17:44:32 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.7340, 14.5830 at 30 km depth.

The earthquake was located by: Bollettino Sismico Italiano INGV.

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.

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Municipalities within 20 km from the epicenter

Distances are determinated based on the geographic coordintes of the (Istat).
Municipality Region Dist Inh Cum Inh
Gagliano Castelferrato EN 5 3593 3593
Troina EN 6 9373 12966
Agira EN 10 8345 21311
Regalbuto EN 10 7277 28588
Cerami EN 11 2006 30594
Nissoria EN 15 3000 33594
Capizzi ME 16 3176 36770
Nicosia EN 16 13899 50669
San Teodoro ME 16 1403 52072
Cesarò ME 17 2439 54511
Assoro EN 18 5191 59702
Centuripe EN 19 5470 65172
Leonforte EN 20 13439 78611

Municipalities with at least 50000 inhabitants

An earthquake occurred to
51 Km NW of Catania (314555 inhabitants)
53 Km W of Acireale (52622 inhabitants)
53 Km NE of Caltanissetta (63360 inhabitants)
80 Km NE of Gela (75827 inhabitants)
87 Km N of Vittoria (63339 inhabitants)
91 Km N of Ragusa (73313 inhabitants)
98 Km NW of Siracusa (122291 inhabitants)
99 Km N of Modica (54633 inhabitants)
100 Km SW of Messina (238439 inhabitants)
100 Km NE of Agrigento (59770 inhabitants)
Recent and historical seismicity
Seismic hazard
Shakemap
Felt maps
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Bulletin
Rev1000 		ML 1.7 2021-11-14
16:44:32		 37.7342 14.583 30 2022-03-30
13:04:37		 Bollettino Sismico Italiano INGV 100882461
Reviewed
Rev100 		ML 1.8 2021-11-14
16:44:31		 37.7333 14.5207 33 2021-11-14
16:57:32		 Sala Sismica INGV-Roma 97465181
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-11-14 16:44:32 ± 0.31
Latitude 37.7342 ± 0.0126
Longitude 14.5830 ± 0.0250
Depth (km) 30 ± 3 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 100882461

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1661
Semi-minor axis of confidence ellipse (meter) 1524
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 88
Circular confidence region, given by single value of horizontal uncertainty (meter) 1660.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 113
Number of associated phases, regardless of their use for origin computation 26
Number of defining phases 15
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.41
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.54049
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 10
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 13
Type of magnitude ML
Reference to an origin 100882461
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-02-11 16:41:23

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 13
Type of magnitude ML
Reference to an origin 97465181
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-11-14 16:57:32
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
GU.CANO.HHZ. 2021-11-14T16:46:07.71 3.0 positive manual Pn -4.75 0
IV.IMOL.HNZ. 2021-11-14T16:45:59.61 3.0 negative manual Pn -3.1 0
AC.VLO.HHZ. 2021-11-14T16:45:54.39 3.0 undecidable manual Pg 13.02 0
IV.MTL1.HNZ. 2021-11-14T16:45:41.72 3.0 positive manual Pn -4.62 0
IV.NOCI.HHZ. 2021-11-14T16:45:30.34 3.0 positive manual Pn 4.57 0
IV.RCAV.EHZ. 2021-11-14T16:45:27.76 3.0 undecidable manual Pn 0.69 0
IV.MTCE.HHZ. 2021-11-14T16:45:25.00 3.0 undecidable manual Pn -4.62 0
IX.SCL3.EHZ.02 2021-11-14T16:45:21.11 3.0 positive manual Pn 4.92 0
IV.IMTC.HHZ. 2021-11-14T16:45:12.02 3.0 undecidable manual Pn 0.17 0
IV.IFOR.HHZ. 2021-11-14T16:45:10.61 3.0 positive manual Pn -1.09 0
IV.PIPA.HHZ. 2021-11-14T16:45:08.27 3.0 positive manual Pn -2.51 0
IV.MCPD.HHZ. 2021-11-14T16:44:48.30 0.6 undecidable manual S 17 44.7219 119 0.12 49
IV.MUCR.HHE. 2021-11-14T16:44:47.49 0.6 undecidable manual S 37 42.7239 120 -0.22 48
IV.MSFR.HHZ. 2021-11-14T16:44:45.56 0.6 undecidable manual S 1 33.2445 128 -0.06 51
IV.EPZF.HHZ. 2021-11-14T16:44:45.04 0.6 undecidable manual S 67 26.0517 135 0.88 40
IV.RESU.HHZ. 2021-11-14T16:44:43.64 0.6 undecidable manual P 258 47.2194 117 1.77 23
IV.RAFF.HHZ. 2021-11-14T16:44:43.36 0.3 undecidable manual P 199 59.9955 111 -0.31 69
IV.GIB.HHE. 2021-11-14T16:44:43.65 0.3 undecidable manual P 300 56.3991 113 0.49 66
IV.CSLB.HHE. 2021-11-14T16:44:42.36 0.6 undecidable manual P 296 51.2154 115 -0.07 49
IV.GALF.HHZ. 2021-11-14T16:44:41.26 0.6 undecidable manual S 209 2.997 174 -0.14 53
IV.MUCR.HHE. 2021-11-14T16:44:41.29 0.1 undecidable manual P 37 42.7239 120 0.03 100
IV.MCPD.HHZ. 2021-11-14T16:44:41.32 0.3 undecidable manual P 17 44.7219 119 -0.21 72
IV.MSFR.HHZ. 2021-11-14T16:44:39.60 0.3 undecidable manual P 1 33.2445 128 -0.45 70
IV.EPZF.HHZ. 2021-11-14T16:44:39.71 0.3 undecidable manual P 67 26.0517 135 0.5 70
IV.ESCV.HHZ. 2021-11-14T16:44:38.47 0.6 undecidable manual P 86 20.4684 143 -0.17 50
IV.GALF.HHZ. 2021-11-14T16:44:36.84 0.3 undecidable manual P 209 2.997 174 -0.77 66
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GALF.HHN. ML:2.2 0.00081776335 0.384 AML other m 2021-11-14T16:44:41.77
IV.GALF.HHE. ML:2.2 0.00082250165 0.2304 AML other m 2021-11-14T16:44:42.20
IV.GALF.HNN. ML:1.4 0.00014397369999999998 1.232 AML other m 2021-11-14T16:44:43.08
IV.ESCV.HHN. ML:2.0 0.00041799999999999997 0.36 AML other m 2021-11-14T16:44:45.48
IV.ESCV.HHE. ML:1.9 0.0003536566 1.7824 AML other m 2021-11-14T16:44:46.90
IV.MSFR.HHE. ML:1.3 0.00006145 1.64 AML other m 2021-11-14T16:44:46.02
IV.MSFR.HHN. ML:1.3 0.0000641 0.3 AML other m 2021-11-14T16:44:46.41
IV.GALF.HNE. ML:1.4 0.00014164135 0.7808 AML other m 2021-11-14T16:44:46.05
IV.MCPD.HHN. ML:1.6 0.00010455000000000001 0.26 AML other m 2021-11-14T16:44:48.78
IV.MCPD.HHE. ML:1.7 0.0001245 1.66 AML other m 2021-11-14T16:44:49.89
IV.EPZF.HHE. ML:1.8 0.00021611385 0.4608 AML other m 2021-11-14T16:44:52.00
IV.RAFF.HHE. ML:1.8 0.00010396917 0.3584 AML other m 2021-11-14T16:44:55.64
IV.RAFF.HHN. ML:1.8 0.0001266941 1.4496 AML other m 2021-11-14T16:44:56.00
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