Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of Md 2.0 on date 14-11-2021 and time 17:35:03 (Italy) in region 4 km SE Troina (EN)

A magnitude Md 2.0 earthquake occured in region: 4 km SE Troina (EN), on

  • 14-11-2021 16:35:03 (UTC)
  • 14-11-2021 17:35:03 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.7560, 14.6330 at 25 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
Troina EN 4 9373 9373
Gagliano Castelferrato EN 10 3593 12966
Regalbuto EN 11 7277 20243
San Teodoro ME 12 1403 21646
Cesarò ME 12 2439 24085
Cerami EN 13 2006 26091
Agira EN 14 8345 34436
Capizzi ME 17 3176 37612
Centuripe EN 18 5470 43082
Bronte CT 18 19172 62254
Maniace CT 20 3765 66019
Nissoria EN 20 3000 69019

Municipalities with at least 50000 inhabitants

An earthquake occurred to
49 Km NW of Catania (314555 inhabitants)
50 Km W of Acireale (52622 inhabitants)
58 Km NE of Caltanissetta (63360 inhabitants)
84 Km NE of Gela (75827 inhabitants)
90 Km N of Vittoria (63339 inhabitants)
93 Km N of Ragusa (73313 inhabitants)
95 Km SW of Messina (238439 inhabitants)
97 Km NW of Siracusa (122291 inhabitants)
97 Km W of Reggio di Calabria (183035 inhabitants)
100 Km N of Modica (54633 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 		Md 2.0 2021-11-14
16:35:03		 37.7558 14.6327 25 2022-03-30
13:04:37		 Bollettino Sismico Italiano INGV 100882291
Reviewed
Rev100 		Md 2.1 2021-11-14
16:35:02		 37.7562 14.5693 27 2021-11-14
16:48:10		 Sala Sismica INGV-Roma 97464941
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-11-14 16:35:03 ± 0.25
Latitude 37.7558 ± 0.0072
Longitude 14.6327 ± 0.0171
Depth (km) 25 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 100882291

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1509
Semi-minor axis of confidence ellipse (meter) 205
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 80
Circular confidence region, given by single value of horizontal uncertainty (meter) 1510.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 63
Number of associated phases, regardless of their use for origin computation 37
Number of defining phases 18
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.38
Epicentral distance of station closest to the epicenter (degree) 0.00000
Epicentral distance of station farthest from the epicenter (degree) 0.69248
Number of stations at which the event was observed 29
Number of stations from which data was used for origin computation 11
Magnitudes information

Md:2.0

Field Value
Value 2.0
Uncertainty 0.2
Num. used stations 9
Type of magnitude Md
Reference to an origin 100882291
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2022-02-11 16:36:33

Md:2.1

Field Value
Value 2.1
Uncertainty 0.2
Num. used stations 7
Type of magnitude Md
Reference to an origin 97464941
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2021-11-14 16:48:10
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SSY.HHZ. 2021-11-14T16:35:27.51 0.6 undecidable manual S 150 76.8675 102 0.81 47
IV.HVZN.HHZ. 2021-11-14T16:35:24.32 0.6 undecidable manual S 173 64.491 105 0.83 48
IV.HLNI.HHZ. 2021-11-14T16:35:20.11 0.3 undecidable manual S 155 49.8168 110 0.35 88
IV.MCPD.HHZ. 2021-11-14T16:35:18.17 0.6 undecidable manual S 12 41.3253 115 0.53 58
IV.MUCR.HHE. 2021-11-14T16:35:17.17 0.6 undecidable manual S 33 38.2284 117 0.26 61
IV.SSY.HHZ. 2021-11-14T16:35:16.44 0.3 undecidable manual P 150 76.8675 102 -0.38 84
IV.GIB.HHE. 2021-11-14T16:35:14.61 0.6 undecidable manual P 296 59.0964 107 0.44 56
IV.RAFF.HHZ. 2021-11-14T16:35:14.29 0.3 undecidable manual P 202 63.7917 105 -0.57 83
IV.CSLB.HHZ. 2021-11-14T16:35:14.41 0.3 undecidable manual P 292 54.2013 108 0.96 69
IV.MSFR.HHZ. 2021-11-14T16:35:14.98 0.6 undecidable manual S 353 31.0467 123 -0.27 62
IV.HVZN.HHZ. 2021-11-14T16:35:14.40 0.3 undecidable manual P 173 64.491 105 -0.56 83
IV.HLNI.HHZ. 2021-11-14T16:35:12.46 0.3 undecidable manual P 155 49.8168 110 -0.35 89
IV.MUCR.HHE. 2021-11-14T16:35:11.11 0.3 undecidable manual P 33 38.2284 117 -0.05 96
IV.MCPD.HHZ. 2021-11-14T16:35:11.21 0.3 undecidable manual P 12 41.3253 115 -0.38 89
IV.GALF.HHZ. 2021-11-14T16:35:11.07 0.6 undecidable manual S 229 7.6812 161 -0.18 65
IV.MSFR.HHZ. 2021-11-14T16:35:10.34 0.3 undecidable manual P 353 31.0467 123 0.14 95
IV.FREG.EHZ. 2021-11-14T16:35:08.73 3.0 undecidable manual Sn -0.63 0
IV.ESCV.HHZ. 2021-11-14T16:35:08.46 0.3 undecidable manual P 93 16.0728 144 -0.04 100
IV.GALF.HHZ. 2021-11-14T16:35:07.57 0.3 undecidable manual P 229 7.6812 161 -0.33 95
IV.MTMR.EHZ. 2021-11-14T16:35:03.03 3.0 undecidable manual Sn 2.64 0
IV.QLNO.HHZ. 2021-11-14T16:34:50.61 3.0 undecidable manual Pg 11.24 0
IV.PZUN.HHZ. 2021-11-14T16:34:48.57 3.0 undecidable manual Pg 11.49 0
IV.ORI.HHZ. 2021-11-14T16:34:47.95 3.0 undecidable manual Pn 0.3 0
IV.SARZ.HHZ. 2021-11-14T16:34:40.23 3.0 positive manual Pn 2.41 0
IX.CMP3.EHZ.02 2021-11-14T16:34:39.45 3.0 undecidable manual Pg 7.32 0
IV.MSSA.HHZ. 2021-11-14T16:34:39.21 3.0 negative manual Pg 10.36 0
IV.MTMR.EHZ. 2021-11-14T16:34:32.06 3.0 negative manual Pn 3.32 0
IV.SGO.HHZ. 2021-11-14T16:34:32.27 3.0 undecidable manual Pn -2.29 0
IV.CERA.HHZ. 2021-11-14T16:34:32.79 3.0 undecidable manual Sn -3.55 0
IV.BRSN.EHZ. 2021-11-14T16:34:31.64 3.0 undecidable manual Sg 2.65 0
IX.SNR3.EHZ.02 2021-11-14T16:34:30.81 3.0 positive manual Pn -1.12 0
IV.POFI.HHZ. 2021-11-14T16:34:28.92 3.0 undecidable manual Sn -2.01 0
IV.PE3.EHZ. 2021-11-14T16:34:12.78 3.0 undecidable manual Sn -0.71 0
IV.ASQU.HHZ. 2021-11-14T16:34:06.35 3.0 negative manual P -0.41 0
IV.MMO1.EHZ. 2021-11-14T16:33:59.48 3.0 undecidable manual P 0.57 0
IV.GAVE.EHZ. 2021-11-14T16:33:58.90 3.0 positive manual P 1.43 0
IV.MURB.HHZ. 2021-11-14T16:33:57.84 3.0 positive manual P 0.38 0
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
Waveforms Seismic signals in miniseed + resp format Download