Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.3 on date 20-11-2018 and time 05:55:19 (Italy) in region 9 km N Ragalna (CT)

A magnitude ML 2.3 earthquake occured in region: 9 km N Ragalna (CT), on

  • 20-11-2018 04:55:19 (UTC)
  • 20-11-2018 05:55:19 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.7130, 14.9420 at 27 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 9 3924 3924
Biancavilla CT 10 24007 27931
Adrano CT 11 36122 64053
Santa Maria di Licodia CT 12 7641 71694
Bronte CT 13 19172 90866
Nicolosi CT 13 7463 98329
Belpasso CT 14 28108 126437
Zafferana Etnea CT 14 9517 135954
Maletto CT 15 3920 139874
Pedara CT 15 14102 153976
Paternò CT 15 48228 202204
Milo CT 15 1087 203291
Trecastagni CT 16 10910 214201
Camporotondo Etneo CT 17 5023 219224
San Pietro Clarenza CT 17 7743 226967
Santa Venerina CT 18 8592 235559
Viagrande CT 18 8563 244122
Sant'Alfio CT 18 1582 245704
Mascalucia CT 18 31958 277662
Randazzo CT 18 10900 288562
Tremestieri Etneo CT 19 20589 309151
Aci Bonaccorsi CT 19 3524 312675
Gravina di Catania CT 20 25838 338513

Municipalities with at least 50000 inhabitants

An earthquake occurred to
23 Km NW of Acireale (52622 inhabitants)
27 Km NW of Catania (314555 inhabitants)
76 Km SW of Reggio di Calabria (183035 inhabitants)
76 Km SW of Messina (238439 inhabitants)
79 Km NW of Siracusa (122291 inhabitants)
81 Km E of Caltanissetta (63360 inhabitants)
90 Km N of Ragusa (73313 inhabitants)
92 Km NE of Vittoria (63339 inhabitants)
94 Km NE of Gela (75827 inhabitants)
96 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 2.3 2018-11-20
04:55:19		 37.7132 14.9422 27 2019-06-04
09:16:11		 Bollettino Sismico Italiano INGV 66300711
Reviewed
Rev100 		ML 2.3 2018-11-20
04:55:19		 37.7242 14.9128 30 2018-11-20
05:01:36		 Sala Sismica INGV-Roma 63221771
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-11-20 04:55:19 ± 0.18
Latitude 37.7132 ± 0.0072
Longitude 14.9422 ± 0.0125
Depth (km) 27 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 66300711

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1056
Semi-minor axis of confidence ellipse (meter) 482
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 269
Circular confidence region, given by single value of horizontal uncertainty (meter) 1060.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 85
Number of associated phases, regardless of their use for origin computation 30
Number of defining phases 30
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.49
Epicentral distance of station closest to the epicenter (degree) 0.03238
Epicentral distance of station farthest from the epicenter (degree) 0.76442
Number of stations at which the event was observed 15
Number of stations from which data was used for origin computation 15
Magnitudes information

ML:2.3

Field Value
Value 2.3
Uncertainty 0.2
Num. used stations 20
Type of magnitude ML
Reference to an origin 63221771
Agency INGV
Autore Sala Sismica INGV-Roma
Time of creation (UTC) 2018-11-20 05:01:36

ML:2.3

Field Value
Value 2.3
Uncertainty 0.2
Num. used stations 24
Type of magnitude ML
Reference to an origin 66300711
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-03-08 16:34:19
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.PLLN.EHZ. 2018-11-20T04:55:46.80 0.3 undecidable manual S 294 76.5678 104 3.64 3
IV.HMDC.HHZ. 2018-11-20T04:55:45.70 0.3 undecidable manual S 190 84.8484 102 0.38 61
IV.RAFF.HHZ. 2018-11-20T04:55:44.90 0.3 undecidable manual S 223 74.6697 104 2.24 20
IV.SSY.HHZ. 2018-11-20T04:55:40.10 0.1 undecidable manual S 169 62.6928 107 0.5 83
IV.MPNC.HHZ. 2018-11-20T04:55:39.30 0.3 undecidable manual S 37 59.9955 108 0.39 65
IV.AGST.EHZ. 2018-11-20T04:55:38.70 0.3 undecidable manual S 154 56.499 109 0.67 59
IV.CAGR.HHE. 2018-11-20T04:55:37.70 0.1 undecidable manual S 256 40.1265 118 3.7 4
IV.HAGA.HHZ. 2018-11-20T04:55:36.90 0.1 undecidable manual S 158 51.1155 111 0.24 90
IV.AIO.HHZ. 2018-11-20T04:55:34.20 0.1 undecidable manual S 42 38.3283 119 0.63 85
IV.HLNI.HHZ. 2018-11-20T04:55:34.00 0.1 undecidable manual S 189 40.9257 117 -0.19 93
IV.HMDC.HHZ. 2018-11-20T04:55:33.91 0.1 undecidable manual P 190 84.8484 102 -0.61 77
IV.PLLN.EHZ. 2018-11-20T04:55:33.88 0.1 negative manual P 294 76.5678 104 0.61 79
IV.RAFF.HHZ. 2018-11-20T04:55:32.72 0.1 undecidable manual P 223 74.6697 104 -0.27 86
IV.GALF.HHZ. 2018-11-20T04:55:32.30 0.1 undecidable manual S 270 32.9448 123 -0.05 97
IV.SSY.HHZ. 2018-11-20T04:55:31.07 0.1 undecidable manual P 169 62.6928 107 -0.15 90
IV.MPNC.HHZ. 2018-11-20T04:55:30.87 0.1 undecidable manual P 37 59.9955 108 0.05 93
IV.HAGA.HHZ. 2018-11-20T04:55:29.20 0.1 negative manual P 158 51.1155 111 -0.32 88
IV.AGST.EHZ. 2018-11-20T04:55:29.98 0.1 negative manual P 154 56.499 109 -0.33 87
IV.CAGR.HHE. 2018-11-20T04:55:28.70 0.1 undecidable manual P 256 40.1265 118 0.71 80
IV.ESML.HHZ. 2018-11-20T04:55:28.80 0.6 undecidable manual S 208 11.877 153 0.28 48
IV.EMCN.HNZ. 2018-11-20T04:55:28.90 0.3 undecidable manual S 43 11.7771 154 0.4 70
IV.EPZF.HHZ. 2018-11-20T04:55:28.90 0.1 undecidable manual S 329 14.3745 149 0.06 100
IV.ESLN.HHZ. 2018-11-20T04:55:27.50 0.3 undecidable manual S 128 3.5964 172 -0.34 72
IV.AIO.HHZ. 2018-11-20T04:55:27.86 0.1 positive manual P 42 38.3283 119 0.12 96
IV.HLNI.HHZ. 2018-11-20T04:55:27.63 0.1 negative manual P 189 40.9257 117 -0.47 87
IV.GALF.HHZ. 2018-11-20T04:55:26.31 0.1 negative manual P 270 32.9448 123 -0.72 81
IV.EPZF.HHZ. 2018-11-20T04:55:24.07 0.1 positive manual P 329 14.3745 149 -0.94 75
IV.ESML.HHZ. 2018-11-20T04:55:24.36 0.3 undecidable manual P 208 11.877 153 -0.46 69
IV.EMCN.HNZ. 2018-11-20T04:55:24.76 0.3 undecidable manual P 43 11.7771 154 -0.05 75
IV.ESLN.HHZ. 2018-11-20T04:55:23.84 0.1 negative manual P 128 3.5964 172 -0.59 89
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ESML.HHE. ML:0.0 0.0009140924 0.2208 AML other m 2018-11-20T04:55:30.42
IV.ESLN.HHN. ML:0.0 0.0012690644999999998 0.24 AML other m 2018-11-20T04:55:28.03
IV.ESLN.HHE. ML:0.0 0.0014449999999999999 0.76 AML other m 2018-11-20T04:55:28.60
IV.EPZF.HHE. ML:0.0 0.003757262 0.5984 AML other m 2018-11-20T04:55:29.38
IV.EPZF.HHN. ML:0.0 0.0017796259999999999 0.4416 AML other m 2018-11-20T04:55:29.45
IV.ESML.HHN. ML:0.0 0.000818419 0.5376 AML other m 2018-11-20T04:55:33.98
IV.GALF.HHN. ML:0.0 0.00038320425000000003 0.4608 AML other m 2018-11-20T04:55:33.64
IV.GALF.HHE. ML:0.0 0.0006843466 0.3808 AML other m 2018-11-20T04:55:34.27
IV.HLNI.HHN. ML:0.0 0.0004329653 0.2816 AML other m 2018-11-20T04:55:34.76
IV.AIO.HHE. ML:0.0 0.0006473826 0.3584 AML other m 2018-11-20T04:55:34.61
IV.HLNI.HHE. ML:0.0 0.0003413256 0.1984 AML other m 2018-11-20T04:55:35.10
IV.AIO.HHN. ML:0.0 0.00031333455 0.2176 AML other m 2018-11-20T04:55:35.93
IV.HAGA.HHE. ML:0.0 0.00022909059999999998 0.3584 AML other m 2018-11-20T04:55:37.22
IV.HAGA.HHN. ML:0.0 0.00018271334500000001 0.1984 AML other m 2018-11-20T04:55:39.72
IV.MPNC.HHN. ML:0.0 0.0002766363 0.3008 AML other m 2018-11-20T04:55:41.15
IV.MPNC.HHE. ML:0.0 0.00021593240000000003 0.4192 AML other m 2018-11-20T04:55:42.68
IV.HMDC.HHN. ML:0.0 0.000308378 0.3008 AML other m 2018-11-20T04:55:47.54
IV.HMDC.HHE. ML:0.0 0.00045231525000000004 0.2784 AML other m 2018-11-20T04:55:46.90
IV.PLLN.EHE. ML:0.0 0.00032175350000000004 0.5984 AML other m 2018-11-20T04:55:48.47
IV.PLLN.EHN. ML:0.0 0.00029714779999999994 0.9632 AML other m 2018-11-20T04:55:50.60
IV.GALF.HNE. ML:1.9 0.00024369165 0.4288 AML other m 2018-11-20T04:55:34.49
IV.AGST.EHE. ML:2.3 0.00039580965 0.24 AML other m 2018-11-20T04:55:42.09
IV.AGST.EHN. ML:2.2 0.0003500242 0.1216 AML other m 2018-11-20T04:55:39.76
IV.SSY.HHE. ML:2.8 0.0010113093000000003 0.1792 AML other m 2018-11-20T04:55:40.25
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