Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 19-04-2019 and time 23:20:29 (Italy) in region 2 km S Ragalna (CT)

A magnitude ML 1.8 earthquake occured in region: 2 km S Ragalna (CT), on

  • 19-04-2019 21:20:29 (UTC)
  • 19-04-2019 23:20:29 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.6140, 14.9410 at 6 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
Ragalna CT 2 3924 3924
Belpasso CT 4 28108 32032
Santa Maria di Licodia CT 5 7641 39673
Paternò CT 5 48228 87901
Biancavilla CT 7 24007 111908
Nicolosi CT 8 7463 119371
Camporotondo Etneo CT 8 5023 124394
San Pietro Clarenza CT 9 7743 132137
Pedara CT 11 14102 146239
Adrano CT 11 36122 182361
Mascalucia CT 11 31958 214319
Motta Sant'Anastasia CT 12 12116 226435
Misterbianco CT 12 49410 275845
Gravina di Catania CT 12 25838 301683
Trecastagni CT 12 10910 312593
Tremestieri Etneo CT 12 20589 333182
Sant'Agata li Battiati CT 14 9479 342661
Viagrande CT 14 8563 351224
San Giovanni la Punta CT 14 23060 374284
Aci Bonaccorsi CT 15 3524 377808
San Gregorio di Catania CT 16 11966 389774
Aci Sant'Antonio CT 16 17984 407758
Valverde CT 17 7840 415598
Zafferana Etnea CT 17 9517 425115
Centuripe EN 18 5470 430585
Aci Catena CT 18 29851 460436
Catania CT 18 314555 774991
Aci Castello CT 19 18723 793714
Santa Venerina CT 19 8592 802306
Milo CT 20 1087 803393
Acireale CT 20 52622 856015

Municipalities with at least 50000 inhabitants

An earthquake occurred to
18 Km NW of Catania (314555 inhabitants)
20 Km W of Acireale (52622 inhabitants)
69 Km NW of Siracusa (122291 inhabitants)
79 Km E of Caltanissetta (63360 inhabitants)
79 Km N of Ragusa (73313 inhabitants)
82 Km NE of Vittoria (63339 inhabitants)
83 Km SW of Reggio di Calabria (183035 inhabitants)
84 Km SW of Messina (238439 inhabitants)
85 Km N of Modica (54633 inhabitants)
86 Km NE of Gela (75827 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 1.8 2019-04-19
21:20:29		 37.6145 14.9408 6 2019-08-22
08:25:15		 Bollettino Sismico Italiano INGV 71278911
Reviewed
Rev100 		ML 2.1 2019-04-19
21:20:29		 37.6233 14.9452 8 2019-04-19
21:29:23		 Sala Sismica INGV-Roma 67755911
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2019-04-19 21:20:29 ± 0.13
Latitude 37.6145 ± 0.0090
Longitude 14.9408 ± 0.0136
Depth (km) 6 ± 2 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 71278911

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1177
Semi-minor axis of confidence ellipse (meter) 849
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 51
Circular confidence region, given by single value of horizontal uncertainty (meter) 1180.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 78
Number of associated phases, regardless of their use for origin computation 18
Number of defining phases 18
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) 0.06565
Epicentral distance of station farthest from the epicenter (degree) 0.60344
Number of stations at which the event was observed 13
Number of stations from which data was used for origin computation 13
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.1
Num. used stations 4
Type of magnitude ML
Reference to an origin 67755911
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2019-04-19 21:29:23

ML:1.8

Field Value
Value 1.8
Uncertainty 0.4
Num. used stations 5
Type of magnitude ML
Reference to an origin 71278911
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-08-08 16:30:52
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SSY.HHZ. 2019-04-19T21:20:47.41 0.6 undecidable manual S 167 52.0035 50 0.54 44
IV.HAGA.HHZ. 2019-04-19T21:20:43.79 0.6 undecidable manual S 153 41.1255 98 0 50
IV.RAFF.HHZ. 2019-04-19T21:20:41.92 0.1 undecidable manual P 230 66.9774 50 0.14 93
IV.MNO.SHZ. 2019-04-19T21:20:38.48 0.3 undecidable manual P 329 41.2254 98 0.76 61
IV.MUCR.HHE. 2019-04-19T21:20:38.52 0.6 undecidable manual P 353 47.9187 50 -0.31 46
IV.SSY.HHZ. 2019-04-19T21:20:38.92 0.3 undecidable manual P 167 52.0035 50 -0.55 65
IV.EMSG.HHZ. 2019-04-19T21:20:37.40 0.6 undecidable manual S 2 22.8549 104 -0.18 50
IV.HAGA.HHZ. 2019-04-19T21:20:37.34 0.3 undecidable manual P 153 41.1255 98 -0.36 70
IV.GALF.HHE. 2019-04-19T21:20:36.80 0.3 undecidable manual P 288 34.5432 100 0.4 70
IV.EPZF.HHZ. 2019-04-19T21:20:34.41 0.6 undecidable manual P 342 24.3534 104 0.01 52
IV.EPOZ.HHE. 2019-04-19T21:20:34.53 0.3 undecidable manual P 74 22.6551 105 0.47 70
IV.EPIT.HHN. 2019-04-19T21:20:34.31 0.3 undecidable manual P 25 24.0537 104 -0.03 77
IV.EMSG.HHZ. 2019-04-19T21:20:34.33 0.6 undecidable manual P 2 22.8549 104 0.22 50
IV.ENIC.HHZ. 2019-04-19T21:20:33.72 0.6 undecidable manual S 75 7.2927 129 1.08 37
IV.EMCN.HNE. 2019-04-19T21:20:33.56 0.3 undecidable manual P 23 21.2676 106 -0.23 74
IV.ECHR.HHE. 2019-04-19T21:20:33.08 0.6 undecidable manual S 343 8.3805 125 0.16 51
IV.ECHR.HHE. 2019-04-19T21:20:30.57 0.1 undecidable manual P 343 8.3805 125 -0.85 83
IV.ENIC.HHZ. 2019-04-19T21:20:30.96 0.1 undecidable manual P 75 7.2927 129 -0.3 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ENIC.HHE. ML:0.0 0.0023020214999999998 0.2304 AML other m 2019-04-19T21:20:38.64
IV.ENIC.HHN. ML:0.0 0.002600225 0.2048 AML other m 2019-04-19T21:20:36.40
IV.EMSG.HHN. ML:2.2 0.0010046374999999998 0.2944 AML other m 2019-04-19T21:20:43.53
IV.EPZF.HHE. ML:1.8 0.00045493975 0.4992 AML other m 2019-04-19T21:20:44.61
IV.HAGA.HHN. ML:1.2 0.000055807974999999997 0.384 AML other m 2019-04-19T21:20:52.82
IV.HAGA.HHE. ML:1.2 0.00005475453 0.4224 AML other m 2019-04-19T21:20:53.59
IV.SSY.HHN. ML:2.2 0.00037568355 0.2048 AML other m 2019-04-19T21:20:52.56
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