Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.2 on date 23-04-2020 and time 21:12:23 (Italy) in region 5 km SE Troina (EN)

A magnitude ML 2.2 earthquake occured in region: 5 km SE Troina (EN), on

  • 23-04-2020 19:12:23 (UTC)
  • 23-04-2020 21:12:23 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.7440, 14.6280 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
Troina EN 5 9373 9373
Gagliano Castelferrato EN 9 3593 12966
Regalbuto EN 10 7277 20243
Cerami EN 13 2006 22249
Agira EN 13 8345 30594
San Teodoro ME 13 1403 31997
Cesarò ME 14 2439 34436
Centuripe EN 17 5470 39906
Capizzi ME 18 3176 43082
Nissoria EN 18 3000 46082
Bronte CT 19 19172 65254

Municipalities with at least 50000 inhabitants

An earthquake occurred to
49 Km NW of Catania (314555 inhabitants)
50 Km W of Acireale (52622 inhabitants)
57 Km NE of Caltanissetta (63360 inhabitants)
82 Km NE of Gela (75827 inhabitants)
89 Km N of Vittoria (63339 inhabitants)
91 Km N of Ragusa (73313 inhabitants)
96 Km SW of Messina (238439 inhabitants)
96 Km NW of Siracusa (122291 inhabitants)
98 Km W of Reggio di Calabria (183035 inhabitants)
99 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 		ML 2.2 2020-04-23
19:12:23		 37.7443 14.6278 30 2020-07-18
21:08:40		 Bollettino Sismico Italiano INGV 80070061
Reviewed
Rev100 		ML 2.2 2020-04-23
19:12:23		 37.7525 14.6647 33 2020-04-23
19:22:47		 Sala Sismica INGV-Roma 78508061
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-04-23 19:12:23 ± 0.18
Latitude 37.7443 ± 0.0072
Longitude 14.6278 ± 0.0114
Depth (km) 30 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 80070061

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 999
Semi-minor axis of confidence ellipse (meter) 123
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 271
Circular confidence region, given by single value of horizontal uncertainty (meter) 1000.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 51
Number of associated phases, regardless of their use for origin computation 31
Number of defining phases 31
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.42
Epicentral distance of station closest to the epicenter (degree) 0.15828
Epicentral distance of station farthest from the epicenter (degree) 1.12235
Number of stations at which the event was observed 23
Number of stations from which data was used for origin computation 23
Magnitudes information

ML:2.2

Field Value
Value 2.2
Uncertainty 0.3
Num. used stations 36
Type of magnitude ML
Reference to an origin 80070061
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-07-13 10:32:32

ML:2.2

Field Value
Value 2.2
Uncertainty 0.3
Num. used stations 36
Type of magnitude ML
Reference to an origin 78508061
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2020-04-23 19:22:47
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MPNC.HHZ. 2020-04-23T19:12:48.96 0.6 undecidable manual S 55 77.5668 106 1.53 25
IV.SSY.HHZ. 2020-04-23T19:12:47.48 0.3 undecidable manual S 149 75.9684 106 0.45 63
IV.HAGA.HHZ. 2020-04-23T19:12:45.02 0.6 undecidable manual S 138 68.8755 108 -0.2 45
MN.CEL.HHZ. 2020-04-23T19:12:44.58 0.6 undecidable manual P 62 124.5864 54 0.58 36
IV.MSRU.HHZ. 2020-04-23T19:12:40.40 0.3 undecidable manual P 53 96.126 103 0.27 63
IV.HLNI.HHZ. 2020-04-23T19:12:40.01 0.3 undecidable manual S 154 48.9177 116 -0.25 69
IV.IFIL.HHZ. 2020-04-23T19:12:38.54 1.0 undecidable manual P 357 91.0422 103 -0.82 18
IV.MUCR.HHZ. 2020-04-23T19:12:37.74 0.3 undecidable manual S 33 39.5271 122 -0.33 69
IV.MPNC.HHZ. 2020-04-23T19:12:37.95 0.3 undecidable manual P 55 77.5668 106 0.61 59
IV.ACATE.EHZ. 2020-04-23T19:12:37.67 0.3 undecidable manual P 188 80.6637 105 -0.14 66
IV.IVPL.HHZ. 2020-04-23T19:12:37.54 0.1 undecidable manual P 24 76.5678 106 0.34 85
IV.MSFR.HHZ. 2020-04-23T19:12:36.11 0.3 undecidable manual S 354 32.2455 128 -0.37 69
IV.SSY.HHZ. 2020-04-23T19:12:36.68 0.1 undecidable manual P 149 75.9684 106 -0.44 84
IV.RESU.HHZ. 2020-04-23T19:12:36.14 0.6 undecidable manual P 258 51.3153 115 2.6 9
IV.RAFF.HHZ. 2020-04-23T19:12:35.42 0.1 undecidable manual P 202 62.3931 110 0.29 89
IV.CAGR.HHZ. 2020-04-23T19:12:35.23 0.3 undecidable manual S 220 17.5713 146 1.43 45
IV.HAGA.HHZ. 2020-04-23T19:12:35.41 0.3 undecidable manual P 138 68.8755 108 -0.66 59
IV.AIO.HHZ. 2020-04-23T19:12:34.59 0.3 undecidable manual P 64 58.6968 112 0.01 71
IV.EPZF.HHZ. 2020-04-23T19:12:34.37 0.6 undecidable manual S 66 21.9669 140 -0.12 49
IV.ECTS.HHZ. 2020-04-23T19:12:33.32 0.3 undecidable manual P 70 45.8208 118 0.53 65
IV.CSLB.HHZ. 2020-04-23T19:12:33.59 0.3 undecidable manual P 293 54.3012 113 -0.38 66
IV.PETRA.HHZ. 2020-04-23T19:12:33.00 0.3 undecidable manual P 283 46.0206 118 0.18 70
IV.PLLN.EHZ. 2020-04-23T19:12:33.36 0.3 undecidable manual P 303 50.616 115 -0.09 71
IV.HLNI.HHZ. 2020-04-23T19:12:32.52 0.1 undecidable manual P 154 48.9177 116 -0.68 81
IV.MUCR.HHZ. 2020-04-23T19:12:31.44 0.1 undecidable manual P 33 39.5271 122 -0.5 88
IV.ECHR.HHE. 2020-04-23T19:12:30.94 0.6 undecidable manual P 104 25.8519 135 0.66 43
IV.MSFR.HHZ. 2020-04-23T19:12:30.42 0.1 positive manual P 354 32.2455 128 -0.6 86
IV.ESML.HHZ. 2020-04-23T19:12:30.56 0.3 undecidable manual P 122 26.1516 135 0.25 72
IV.EMSG.HHZ. 2020-04-23T19:12:30.82 0.3 undecidable manual P 73 29.4483 131 0.13 73
IV.CAGR.HHZ. 2020-04-23T19:12:29.38 0.1 undecidable manual P 220 17.5713 146 -0.09 100
IV.EPZF.HHZ. 2020-04-23T19:12:29.79 0.1 undecidable manual P 66 21.9669 140 -0.09 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.CSLB.HHE. ML:1.3 0.00004145 0.44 AML other m 2020-04-23T19:12:35.57
IV.EPZF.HHE. ML:2.2 0.0006525 0.48 AML other m 2020-04-23T19:12:35.86
IV.CAGR.HHN. ML:2.3 0.0009725 0.82 AML other m 2020-04-23T19:12:36.99
IV.CAGR.HHE. ML:2.4 0.0011755 0.7 AML other m 2020-04-23T19:12:36.61
IV.MSFR.HHN. ML:1.7 0.00014450000000000002 0.44 AML other m 2020-04-23T19:12:37.02
IV.MSFR.HHE. ML:1.6 0.000127 0.94 AML other m 2020-04-23T19:12:37.49
IV.MUCR.HHN. ML:2.2 0.00046599999999999994 1.7 AML other m 2020-04-23T19:12:37.99
IV.ESML.HHN. ML:2.1 0.0004645 0.94 AML other m 2020-04-23T19:12:39.63
IV.ESML.HHE. ML:2.1 0.000495 1.26 AML other m 2020-04-23T19:12:39.99
IV.MUCR.HHE. ML:2.1 0.0003075 0.86 AML other m 2020-04-23T19:12:40.18
IV.EPZF.HHN. ML:2.4 0.0009559999999999999 0.36 AML other m 2020-04-23T19:12:40.13
IV.HLNI.HHE. ML:2.2 0.000359 1.28 AML other m 2020-04-23T19:12:41.11
IV.ECTS.HHE. ML:1.9 0.0001815 0.76 AML other m 2020-04-23T19:12:43.14
IV.HLNI.HHN. ML:2.2 0.000371 1.58 AML other m 2020-04-23T19:12:43.80
IV.HAGA.HHN. ML:2.5 0.0005175000000000001 0.36 AML other m 2020-04-23T19:12:45.47
IV.ECTS.HHN. ML:2.0 0.000253 1.08 AML other m 2020-04-23T19:12:45.44
IV.AIO.HHN. ML:1.9 0.00014250000000000002 0.38 AML other m 2020-04-23T19:12:45.67
IV.PLLN.EHE. ML:2.1 0.00026700000000000004 0.82 AML other m 2020-04-23T19:12:46.41
IV.HAGA.HHE. ML:2.4 0.000391 0.42 AML other m 2020-04-23T19:12:46.37
IV.PLLN.EHN. ML:2.2 0.000364 0.96 AML other m 2020-04-23T19:12:46.62
IV.CSLB.HHN. ML:1.4 0.000052699999999999993 0.68 AML other m 2020-04-23T19:12:46.45
IV.RAFF.HHE. ML:2.2 0.00029299999999999997 1.4 AML other m 2020-04-23T19:12:48.06
IV.PETRA.HHN. ML:1.8 0.0001615 1.42 AML other m 2020-04-23T19:12:48.23
IV.SSY.HHN. ML:3.2 0.001935 0.56 AML other m 2020-04-23T19:12:49.34
IV.PETRA.HHE. ML:1.9 0.00017099999999999998 0.36 AML other m 2020-04-23T19:12:49.40
IV.IVPL.HHN. ML:2.2 0.0002145 1.48 AML other m 2020-04-23T19:12:49.25
IV.RAFF.HHN. ML:2.2 0.00028700000000000004 0.42 AML other m 2020-04-23T19:12:50.18
IV.AIO.HHE. ML:1.8 0.00011 0.46 AML other m 2020-04-23T19:12:50.72
IV.MPNC.HHN. ML:2.2 0.0002245 0.46 AML other m 2020-04-23T19:12:51.53
IV.SSY.HHE. ML:2.8 0.000875 0.88 AML other m 2020-04-23T19:12:52.59
IV.IVPL.HHE. ML:2.2 0.0002035 0.34 AML other m 2020-04-23T19:12:52.26
IV.MPNC.HHE. ML:2.2 0.000237 1.32 AML other m 2020-04-23T19:12:52.98
IV.IFIL.HHE. ML:2.8 0.0007050000000000001 0.48 AML other m 2020-04-23T19:12:53.49
IV.MSRU.HHE. ML:2.2 0.00014450000000000002 0.74 AML other m 2020-04-23T19:12:55.70
IV.IFIL.HHN. ML:2.4 0.00029749999999999997 1.48 AML other m 2020-04-23T19:12:56.19
IV.MSRU.HHN. ML:2.1 0.00013450000000000002 1.14 AML other m 2020-04-23T19:12:57.74
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