Earthquake with magnitude of ML 2.5 on date 18-12-2018 and time 10:31:40 (Italy) in region 12 km N Ragalna (CT)

A magnitude ML 2.5 earthquake occured in region: 12 km N Ragalna (CT), on

  • 18-12-2018 09:31:40 (UTC)
  • 18-12-2018 10:31:40 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.74, 14.97 at 9 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.

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 12 3924 3924
Zafferana Etnea CT 13 9517 13441
Bronte CT 13 19172 32613
Milo CT 13 1087 33700
Biancavilla CT 14 24007 57707
Maletto CT 14 3920 61627
Adrano CT 14 36122 97749
Nicolosi CT 15 7463 105212
Santa Maria di Licodia CT 15 7641 112853
Pedara CT 16 14102 126955
Sant'Alfio CT 16 1582 128537
Randazzo CT 16 10900 139437
Belpasso CT 16 28108 167545
Santa Venerina CT 16 8592 176137
Trecastagni CT 17 10910 187047
Viagrande CT 18 8563 195610
PaternĂ² CT 19 48228 243838
San Pietro Clarenza CT 19 7743 251581
Camporotondo Etneo CT 19 5023 256604
Giarre CT 19 27659 284263
Linguaglossa CT 20 5403 289666
Mascalucia CT 20 31958 321624
Moio Alcantara ME 20 717 322341
Aci Bonaccorsi CT 20 3524 325865
Maniace CT 20 3765 329630
Santa Domenica Vittoria ME 20 980 330610

Municipalities with at least 50000 inhabitants

An earthquake occurred to
22 Km NW of Acireale (52622 inhabitants)
28 Km NW of Catania (314555 inhabitants)
73 Km SW of Reggio di Calabria (183035 inhabitants)
73 Km SW of Messina (238439 inhabitants)
81 Km NW of Siracusa (122291 inhabitants)
84 Km E of Caltanissetta (63360 inhabitants)
93 Km N of Ragusa (73313 inhabitants)
95 Km NE of Vittoria (63339 inhabitants)
98 Km NE of Gela (75827 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
Rev 1000 ML 2.5 2018-12-18
09:31:40
37.74 14.97 9 2019-06-04
09:16:18
Bollettino Sismico Italiano INGV 69023131
Rev 200 ML 1.9 2018-12-18
09:31:40
37.73 14.98 4 2019-05-30
08:42:14
Sala Operativa INGV-OE (Catania) 63980851
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2018-12-18 09:31:40 ± 0.14
Latitude 37.74 ± 0.01
Longitude 14.97 ± 0.01
Depth (km) 9 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 69023131

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1060
Semi-minor axis of confidence ellipse (meter) 762
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 83
Circular confidence region, given by single value of horizontal uncertainty (meter) 1060
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 66
Number of associated phases, regardless of their use for origin computation 17
Number of defining phases 17
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.43
Epicentral distance of station closest to the epicenter (degree) 0.04407
Epicentral distance of station farthest from the epicenter (degree) 0.58456
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:2.5

Field Value
Value 2.5
Uncertainty 0.3
Num. used stations 13
Type of magnitude ML
Reference to an origin 69023131
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2019-05-30 08:41:36

ML:1.9

Field Value
Value 1.9
Uncertainty 0.1
Num. used stations
Type of magnitude ML
Reference to an origin 63980851
Agency INGV
Autore Sala Operativa INGV-OE (Catania)
Time of creation (UTC) 2018-12-18 10:10:27
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.SSY.HHZ. 2018-12-18T09:31:51.41 0.3 undecidable manual P 172 0.5846 50 -0.86 54
IV.HAGA.HHZ. 2018-12-18T09:31:50.23 0.3 undecidable manual P 162 0.4757 50 -0.17 69
IV.EPOZ.HHZ. 2018-12-18T09:31:49.82 0.6 undecidable manual S 110 0.1871 114 1.32 31
IV.AIO.HHE. 2018-12-18T09:31:48.36 0.3 undecidable manual P 42 0.3148 50 0.71 61
IV.GALF.HHZ. 2018-12-18T09:31:48.31 0.3 undecidable manual P 265 0.3175 50 0.61 63
IV.HLNI.HHE. 2018-12-18T09:31:48.67 0.3 undecidable manual P 191 0.3948 50 -0.36 67
IV.MUCR.HHZ. 2018-12-18T09:31:47.58 0.1 undecidable manual P 347 0.3148 50 -0.08 96
IV.ESML.HHZ. 2018-12-18T09:31:47.65 0.3 undecidable manual S 210 0.1376 121 0.85 59
IV.EPZF.HHZ. 2018-12-18T09:31:46.60 0.3 undecidable manual S 315 0.1232 124 0.26 72
IV.EPOZ.HHZ. 2018-12-18T09:31:45.27 0.1 undecidable manual P 110 0.1871 114 0.1 98
IV.ESML.HHZ. 2018-12-18T09:31:44.30 0.1 undecidable manual P 210 0.1376 121 0.11 99
IV.ESLN.HHZ. 2018-12-18T09:31:44.03 0.3 undecidable manual S 172 0.0441 152 -0.21 74
IV.EMCN.HNE. 2018-12-18T09:31:44.88 0.3 undecidable manual S 44 0.0755 138 -0.08 76
IV.EMSG.HHZ. 2018-12-18T09:31:43.16 0.1 undecidable manual P 351 0.0854 134 -0.11 100
IV.EPZF.HHZ. 2018-12-18T09:31:43.63 0.1 undecidable manual P 315 0.1232 124 -0.29 95
IV.EMCN.HNE. 2018-12-18T09:31:42.96 0.3 undecidable manual P 44 0.0755 138 -0.16 74
IV.ESLN.HHZ. 2018-12-18T09:31:42.17 0.1 undecidable manual P 172 0.0441 152 -0.54 91
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ESLN.HHN. ML:2.6 0.0070126715 0.3648 AML other m 2018-12-18T09:31:44.26
IV.ESLN.HHE. ML:2.8 0.011283835 0.2048 AML other m 2018-12-18T09:31:44.28
IV.EMSG.HHN. ML:2.6 0.0054539765 0.224 AML other m 2018-12-18T09:31:50.10
IV.EMSG.HHE. ML:2.5 0.0042119775 0.3392 AML other m 2018-12-18T09:31:49.61
IV.EPZF.HHN. ML:2.4 0.0029762425 0.256 AML other m 2018-12-18T09:31:48.75
IV.EPZF.HHE. ML:2.3 0.001998082 0.2624 AML other m 2018-12-18T09:31:48.41
IV.EPOZ.HHE. ML:2.8 0.004325639 0.7424 AML other m 2018-12-18T09:31:51.16
IV.EPOZ.HHN. ML:2.6 0.002800573 0.4352 AML other m 2018-12-18T09:31:50.09
IV.MUCR.HHN. ML:1.9 0.0003464878 0.544 AML other m 2018-12-18T09:32:01.37
IV.MUCR.HHE. ML:1.9 0.0003216946 0.6208 AML other m 2018-12-18T09:31:56.79
IV.HAGA.HHE. ML:1.6 9.313033E-5 0.4224 AML other m 2018-12-18T09:32:06.78
IV.SSY.HHN. ML:2.7 0.00094061635 0.224 AML other m 2018-12-18T09:32:07.60
IV.SSY.HHE. ML:2.3 0.00035059655 0.2624 AML other m 2018-12-18T09:32:07.02
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download