Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 23-04-2020 and time 12:25:18 (UTC) in region 3 km S Troina (EN)

A magnitude ML 2.0 earthquake occured in region: 3 km S Troina (EN), on

  • 23-04-2020 12:25:18 (UTC)
  • 23-04-2020 14:25:18 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.7600, 14.6020 at 20 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 3 9373 9373
Gagliano Castelferrato EN 8 3593 12966
Cerami EN 10 2006 14972
Regalbuto EN 12 7277 22249
Agira EN 13 8345 30594
San Teodoro ME 13 1403 31997
Cesarò ME 14 2439 34436
Capizzi ME 15 3176 37612
Nissoria EN 18 3000 40612
Nicosia EN 18 13899 54511
Centuripe EN 20 5470 59981

Municipalities with at least 50000 inhabitants

An earthquake occurred to
51 Km NW of Catania (314555 inhabitants)
52 Km W of Acireale (52622 inhabitants)
56 Km NE of Caltanissetta (63360 inhabitants)
83 Km NE of Gela (75827 inhabitants)
90 Km N of Vittoria (63339 inhabitants)
93 Km N of Ragusa (73313 inhabitants)
97 Km SW of Messina (238439 inhabitants)
99 Km NW of Siracusa (122291 inhabitants)
99 Km W of Reggio di Calabria (183035 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 2.0 2020-04-23
12:25:18		 37.7595 14.6015 20 2020-07-18
21:08:38		 Bollettino Sismico Italiano INGV 79747491
Reviewed
Rev100 		ML 2.0 2020-04-23
12:25:17		 37.7713 14.5228 23 2020-04-23
12:35:33		 Sala Sismica INGV-Roma 78500691
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-04-23 12:25:18 ± 0.21
Latitude 37.7595 ± 0.0099
Longitude 14.6015 ± 0.0137
Depth (km) 20 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 79747491

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1078
Semi-minor axis of confidence ellipse (meter) 919
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 305
Circular confidence region, given by single value of horizontal uncertainty (meter) 1080.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 123
Number of associated phases, regardless of their use for origin computation 16
Number of defining phases 16
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.39
Epicentral distance of station closest to the epicenter (degree) 0.05576
Epicentral distance of station farthest from the epicenter (degree) 0.70687
Number of stations at which the event was observed 12
Number of stations from which data was used for origin computation 12
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations 18
Type of magnitude ML
Reference to an origin 78500691
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-04-23 12:35:33

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations 20
Type of magnitude ML
Reference to an origin 79747491
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-07-12 21:47:41
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MUCR.HHZ. 2020-04-23T12:25:31.61 0.3 undecidable manual S 37 39.4272 108 0 76
IV.MPNC.HHZ. 2020-04-23T12:25:31.41 0.3 undecidable manual P 57 78.4659 98 -0.44 65
IV.MSFR.HHZ. 2020-04-23T12:25:30.18 0.6 undecidable manual S 358 30.4473 114 0.83 42
IV.EPZF.HHZ. 2020-04-23T12:25:29.33 0.6 undecidable manual S 72 23.5542 122 1.61 28
IV.RAFF.HHZ. 2020-04-23T12:25:29.41 0.1 positive manual P 200 63.1923 100 -0.11 98
IV.AIO.HHZ. 2020-04-23T12:25:28.94 0.3 undecidable manual P 67 60.0954 100 -0.11 73
IV.CSLB.HHZ. 2020-04-23T12:25:27.69 0.1 undecidable manual P 293 51.5151 103 -0.07 100
IV.PLLN.EHN. 2020-04-23T12:25:27.31 0.3 undecidable manual P 303 47.7189 104 0.12 74
IV.PETRA.HHN. 2020-04-23T12:25:26.87 0.3 undecidable manual P 281 43.4232 106 0.32 71
IV.EMSG.HHZ. 2020-04-23T12:25:25.04 0.3 undecidable manual P 77 31.2465 113 0.26 74
IV.MUCR.HHZ. 2020-04-23T12:25:25.50 0.1 positive manual P 37 39.4272 108 -0.46 93
IV.GALF.HHZ. 2020-04-23T12:25:24.72 0.6 undecidable manual S 210 6.1938 160 0.01 54
IV.MSFR.HHZ. 2020-04-23T12:25:24.37 0.1 positive manual P 358 30.4473 114 -0.29 98
IV.CAGR.HHZ. 2020-04-23T12:25:23.35 0.1 negative manual P 210 17.6712 131 0.36 98
IV.EPZF.HHZ. 2020-04-23T12:25:23.82 0.3 undecidable manual P 72 23.5542 122 0.11 78
IV.GALF.HHZ. 2020-04-23T12:25:21.40 0.1 negative manual P 210 6.1938 160 -0.58 96
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.GALF.HHN. ML:2.5 0.0024000000000000002 1.02 AML other m 2020-04-23T12:25:27.16
IV.GALF.HNN. ML:1.6 0.0003 0.98 AML other m 2020-04-23T12:25:27.17
IV.GALF.HNE. ML:1.5 0.00023349999999999998 1.8 AML other m 2020-04-23T12:25:28.98
IV.GALF.HHE. ML:2.4 0.0022512054999999998 0.2368 AML other m 2020-04-23T12:25:28.08
IV.EPZF.HHE. ML:2.0 0.0005914999999999999 0.46 AML other m 2020-04-23T12:25:29.81
IV.EPZF.HHN. ML:2.1 0.0006255 0.48 AML other m 2020-04-23T12:25:29.92
IV.MSFR.HHE. ML:1.4 0.0001083 0.46 AML other m 2020-04-23T12:25:30.54
IV.CAGR.HHE. ML:2.1 0.0007561107000000001 0.4864 AML other m 2020-04-23T12:25:30.61
IV.MSFR.HHN. ML:1.5 0.00013345 1.1 AML other m 2020-04-23T12:25:31.98
IV.MUCR.HHE. ML:2.0 0.0003125 0.32 AML other m 2020-04-23T12:25:31.80
IV.MUCR.HHN. ML:2.1 0.0004305 1.72 AML other m 2020-04-23T12:25:31.94
IV.CAGR.HHN. ML:2.1 0.0007335 1.3 AML other m 2020-04-23T12:25:32.88
IV.EMSG.HHE. ML:2.3 0.0008771241 0.4416 AML other m 2020-04-23T12:25:33.72
IV.EMSG.HHN. ML:2.4 0.0009845559500000001 0.7808 AML other m 2020-04-23T12:25:38.86
IV.AIO.HHN. ML:1.8 0.00011599999999999999 0.44 AML other m 2020-04-23T12:25:38.60
IV.AIO.HHE. ML:1.7 0.00009151811500000002 0.2624 AML other m 2020-04-23T12:25:40.43
IV.RAFF.HHN. ML:2.1 0.000243 0.52 AML other m 2020-04-23T12:25:41.74
IV.RAFF.HHE. ML:2.2 0.000305 0.54 AML other m 2020-04-23T12:25:43.59
IV.MPNC.HHE. ML:2.0 0.00014366665 0.5376 AML other m 2020-04-23T12:25:43.86
IV.MPNC.HHN. ML:2.1 0.0001811633 0.5376 AML other m 2020-04-23T12:25:45.47
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