Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.2 on date 12-09-2018 and time 09:23:26 (UTC) in region 2 km E Ragalna (CT)

A magnitude ML 2.2 earthquake occured in region: 2 km E Ragalna (CT), on

  • 12-09-2018 09:23:26 (UTC)
  • 12-09-2018 11:23:26 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.6270, 14.9660 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
Nicolosi CT 6 7463 39495
Santa Maria di Licodia CT 7 7641 47136
Camporotondo Etneo CT 7 5023 52159
Paternò CT 8 48228 100387
San Pietro Clarenza CT 8 7743 108130
Pedara CT 8 14102 122232
Biancavilla CT 9 24007 146239
Mascalucia CT 10 31958 178197
Trecastagni CT 10 10910 189107
Tremestieri Etneo CT 11 20589 209696
Gravina di Catania CT 11 25838 235534
Viagrande CT 12 8563 244097
Misterbianco CT 12 49410 293507
Adrano CT 12 36122 329629
San Giovanni la Punta CT 13 23060 352689
Sant'Agata li Battiati CT 13 9479 362168
Motta Sant'Anastasia CT 13 12116 374284
Aci Bonaccorsi CT 13 3524 377808
San Gregorio di Catania CT 14 11966 389774
Zafferana Etnea CT 14 9517 399291
Aci Sant'Antonio CT 14 17984 417275
Valverde CT 15 7840 425115
Aci Catena CT 16 29851 454966
Santa Venerina CT 17 8592 463558
Milo CT 17 1087 464645
Catania CT 17 314555 779200
Acireale CT 18 52622 831822
Aci Castello CT 18 18723 850545
Centuripe EN 20 5470 856015

Municipalities with at least 50000 inhabitants

An earthquake occurred to
17 Km NW of Catania (314555 inhabitants)
18 Km W of Acireale (52622 inhabitants)
69 Km NW of Siracusa (122291 inhabitants)
80 Km SW of Reggio di Calabria (183035 inhabitants)
81 Km N of Ragusa (73313 inhabitants)
81 Km E of Caltanissetta (63360 inhabitants)
82 Km SW of Messina (238439 inhabitants)
84 Km NE of Vittoria (63339 inhabitants)
87 Km N of Modica (54633 inhabitants)
89 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 2.2 2018-09-12
09:23:26		 37.6272 14.9662 6 2019-06-04
09:16:15		 Bollettino Sismico Italiano INGV 68221571
Reviewed
Rev200 		ML 2.2 2018-09-12
09:23:25		 37.652 14.953 3 2019-05-03
15:58:20		 Sala Operativa INGV-OE (Catania) 60859961
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-09-12 09:23:26 ± 0.1
Latitude 37.6272 ± 0.0063
Longitude 14.9662 ± 0.0114
Depth (km) 6 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 68221571

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 988
Semi-minor axis of confidence ellipse (meter) 406
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 292
Circular confidence region, given by single value of horizontal uncertainty (meter) 990.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 80
Number of associated phases, regardless of their use for origin computation 20
Number of defining phases 20
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.33
Epicentral distance of station closest to the epicenter (degree) 0.06655
Epicentral distance of station farthest from the epicenter (degree) 0.76622
Number of stations at which the event was observed 17
Number of stations from which data was used for origin computation 17
Magnitudes information

ML:2.2

Field Value
Value 2.2
Uncertainty 0.1
Num. used stations
Type of magnitude ML
Reference to an origin 60859961
Agency INGV
Autore Sala Operativa INGV-OE (Catania)
Time of creation (UTC) 2018-09-12 09:39:58

ML:2.2

Field Value
Value 2.2
Uncertainty 0.3
Num. used stations 26
Type of magnitude ML
Reference to an origin 68221571
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-05-03 15:57:51
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.MSRU.HHZ. 2018-09-12T09:23:42.32 0.6 undecidable manual P 34 85.0482 50 0.91 35
IV.MILZ.HHZ. 2018-09-12T09:23:40.10 1.0 undecidable manual P 18 75.1692 50 0.23 23
IV.HMDC.HHZ. 2018-09-12T09:23:39.93 0.3 undecidable manual P 192 75.8685 50 -0.06 70
IV.RAFF.HHZ. 2018-09-12T09:23:39.44 0.3 undecidable manual P 230 69.5748 50 0.42 66
IV.HLNI.HHZ. 2018-09-12T09:23:38.42 0.6 undecidable manual S 195 32.0457 101 0.81 41
IV.SSY.HHZ. 2018-09-12T09:23:36.23 0.3 undecidable manual P 170 52.9026 50 -0.22 71
IV.MUCR.HHZ. 2018-09-12T09:23:35.36 0.3 undecidable manual P 350 46.8198 50 -0.15 73
IV.NOV.HHZ. 2018-09-12T09:23:35.27 0.6 undecidable manual P 19 46.9197 50 -0.25 48
IV.AIO.HHZ. 2018-09-12T09:23:35.04 0.3 undecidable manual P 31 44.7219 50 -0.15 73
IV.GALF.HHZ. 2018-09-12T09:23:34.12 0.3 undecidable manual P 285 36.3414 100 0.45 69
IV.MNO.SHZ. 2018-09-12T09:23:34.75 0.3 undecidable manual P 325 41.2254 99 0.1 74
IV.HAGA.HHZ. 2018-09-12T09:23:34.28 0.3 undecidable manual P 156 41.4252 50 -0.4 70
IV.HLNI.HHZ. 2018-09-12T09:23:32.46 0.1 negative manual P 195 32.0457 101 -0.36 95
IV.EPZF.HHZ. 2018-09-12T09:23:31.31 0.3 undecidable manual P 336 23.8539 105 0.08 77
IV.EPOZ.HHZ. 2018-09-12T09:23:31.31 0.3 undecidable manual P 76 20.1687 108 0.79 63
IV.EMCN.HNE. 2018-09-12T09:23:29.95 0.3 undecidable manual P 18 19.1697 109 -0.38 73
IV.ESML.HHZ. 2018-09-12T09:23:29.81 0.3 undecidable manual S 263 7.6812 130 0.05 80
IV.ESLN.HHZ. 2018-09-12T09:23:29.85 0.3 undecidable manual S 6 7.3815 131 0.17 78
IV.ESLN.HHZ. 2018-09-12T09:23:27.92 0.1 negative manual P 6 7.3815 131 -0.32 100
IV.ESML.HHZ. 2018-09-12T09:23:27.94 0.1 negative manual P 263 7.6812 130 -0.35 99
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.EPOZ.HHE. ML:2.7 0.004085 1.56 AML other m 2018-09-12T09:23:38.91
IV.HLNI.HHN. ML:1.7 0.0002175 0.6 AML other m 2018-09-12T09:23:39.61
IV.EPZF.HHN. ML:2.6 0.00262 0.4 AML other m 2018-09-12T09:23:40.53
IV.EPZF.HHE. ML:2.6 0.002505 0.44 AML other m 2018-09-12T09:23:40.44
IV.EPOZ.HHN. ML:2.9 0.006189999999999999 1.42 AML other m 2018-09-12T09:23:41.80
IV.HAGA.HHE. ML:2.0 0.000299 0.7 AML other m 2018-09-12T09:23:41.76
IV.HAGA.HHN. ML:2.0 0.0003275 0.4 AML other m 2018-09-12T09:23:42.81
IV.MNO.SHN. ML:0.0 0.0009730000000000001 1.32 AML other m 2018-09-12T09:23:46.68
IV.AIO.HHN. ML:1.9 0.0002355 0.48 AML other m 2018-09-12T09:23:46.06
IV.GALF.HNN. ML:1.9 0.00028649999999999997 0.8 AML other m 2018-09-12T09:23:46.35
IV.GALF.HHE. ML:2.5 0.001245 1.42 AML other m 2018-09-12T09:23:46.05
IV.HLNI.HHE. ML:1.6 0.0001785 0.94 AML other m 2018-09-12T09:23:46.91
IV.MNO.SHE. ML:0.0 0.000569 1.32 AML other m 2018-09-12T09:23:46.98
IV.SSY.HHE. ML:2.5 0.0008145 1.32 AML other m 2018-09-12T09:23:47.89
IV.MUCR.HHN. ML:2.2 0.0004395 1.44 AML other m 2018-09-12T09:23:47.23
IV.GALF.HNE. ML:2.0 0.000402 0.54 AML other m 2018-09-12T09:23:47.70
IV.GALF.HHN. ML:2.4 0.0010035 0.5 AML other m 2018-09-12T09:23:47.35
IV.AIO.HHE. ML:1.8 0.000191 1.6 AML other m 2018-09-12T09:23:49.90
IV.MUCR.HHE. ML:2.2 0.000483 0.5 AML other m 2018-09-12T09:23:49.67
IV.SSY.HHN. ML:2.7 0.00126 0.32 AML other m 2018-09-12T09:23:51.08
IV.RAFF.HHE. ML:2.1 0.0002305 0.48 AML other m 2018-09-12T09:23:51.89
IV.RAFF.HHN. ML:1.9 0.000135 0.46 AML other m 2018-09-12T09:23:52.16
IV.MSRU.HHN. ML:1.9 0.00010035 0.32 AML other m 2018-09-12T09:24:02.28
IV.MSRU.HHE. ML:2.1 0.00015 1.44 AML other m 2018-09-12T09:24:02.24
IV.CAR1.HHE. ML:2.3 0.000057050000000000004 1.08 AML other m 2018-09-12T09:24:31.20
IV.CAR1.HHN. ML:2.3 0.00005225 0.42 AML other m 2018-09-12T09:24:38.49
IV.TDS.HHN. ML:2.3 0.000033549999999999996 0.42 AML other m 2018-09-12T09:24:44.15
IV.TDS.HHE. ML:2.2 0.000031549999999999994 1.5 AML other m 2018-09-12T09:24:44.17
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