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) 37.71, 14.94 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.

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
Milo CT 15 1087 155063
Paternò CT 15 48228 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

These maps show the seismicity for different time windows. The earthquake locations reported in these maps are determined in quasi real-time by the personnel on duty in the seismic surveillance center of INGV in Rome. Note that the earthquake source parameters (hypocentral location and magnitude) are the best estimates obstained with the available data and they are adjourned as additional data become available. The source parameters obtained by the personnel on duty are then revised by the group in charge of the INGV Seismic Bulletin (Bollettino Sismico Italiano dell’INGV).

Earthquakes of the last three days (72 hours)

Earthquakes of the last three days (72 hours) *

This map reports the earthquake epicenters located in the past 72 hours (3 days) from the time this page has been generated. The radius of the circle representing the earthquake on the map scales with magnitude. The color depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours). The open star shows the epicenter of the current earthquake.
Earthquakes of the last 90 days

Earthquakes of the last 90 days *

This map reports the Magnitudo ≥ 1.0 earthquake epicenters located using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radii of the circles representing the epicenters on the map scale with magnitude. The color of each circle depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours; blue = all other earthquakes). The open star shows the epicenter of the current earthquake.
Earthquakes since 1985

Earthquakes since 1985 *

This map reports the Magnitudo ≥ 2.5 earthquake epicenters located using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. The radii of the circles representing the epicenters on the map scale with magnitude. The color of each circle depends on the time of occurrence of the earthquakes with respect to the time of generation of the map (red = 1 hour; orange = 24 hours; yellow = 72 hours; blue = all other earthquakes). The open star shows the epicenter of the current earthquake.
Earthquakes since 1000 AD until 2014

Earthquakes since 1000 AD until 2014 *

This map shows the epicenters of the historical earthquakes catalogue CPT15 (Catalogo Parametrico dei Terremoti Italiani, 2015 version https://emidius.mi.ingv.it/CPTI15-DBMI15/) with estimated magnitude ≥ 5.0 since 1000 AD until 2014. The epicenters are represented by squares which sides scale with the estimated earthquake magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The open star shows the epicenter of the current earthquake.
Seismic hazard
Shakemap
Felt maps
The earthquake effects in MCS scale as obtained from the compiled questionnaire

The earthquake effects in MCS scale as obtained from the compiled questionnaire *

This map shows the distribution of the effects of the earthquake on the territory in terms of the MCS (Mercalli-Cancani-Sieberg) intensity scale. The intensities are determined using the data provided in the questionnaire (http://www.haisentitoilterremoto.it/) that are analysed using robust statistical techniques since they are not verified individually. Specifically, the assignment of MCS intensities greater or equal the VI degree of the MCS scale require opportune in situ verification by professional experts. The purple start shows the epicenter. This map is prepared every so often that the population fill in new questionnaires. The number of questionnaires used to determine the map and the date and time of the last adjournment are shown in the upper right part of the panel.
Locations history
Type Magnitude Date and Time (UTC) Latitude Longitude Depth (km) Published time (UTC) Author Location ID
Rev 1000 ML 2.3 2018-11-20
04:55:19
37.71 14.94 27 2019-06-04
09:16:11
Bollettino Sismico Italiano INGV 66300711
Rev 100 ML 2.3 2018-11-20
04:55:19
37.72 14.91 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 37.71 ± 0.01
Longitude 14.94 ± 0.01
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
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 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

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
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.PLLN.EHZ. 2018-11-20T04:55:46.80 0.3 undecidable manual S 294 0.6898 104 3.64 3
IV.HMDC.HHZ. 2018-11-20T04:55:45.70 0.3 undecidable manual S 190 0.7644 102 0.38 61
IV.RAFF.HHZ. 2018-11-20T04:55:44.90 0.3 undecidable manual S 223 0.6727 104 2.24 20
IV.SSY.HHZ. 2018-11-20T04:55:40.10 0.1 undecidable manual S 169 0.5648 107 0.5 83
IV.MPNC.HHZ. 2018-11-20T04:55:39.30 0.3 undecidable manual S 37 0.5405 108 0.39 65
IV.AGST.EHZ. 2018-11-20T04:55:38.70 0.3 undecidable manual S 154 0.509 109 0.67 59
IV.CAGR.HHE. 2018-11-20T04:55:37.70 0.1 undecidable manual S 256 0.3615 118 3.7 4
IV.HAGA.HHZ. 2018-11-20T04:55:36.90 0.1 undecidable manual S 158 0.4605 111 0.24 90
IV.AIO.HHZ. 2018-11-20T04:55:34.20 0.1 undecidable manual S 42 0.3453 119 0.63 85
IV.HLNI.HHZ. 2018-11-20T04:55:34.00 0.1 undecidable manual S 189 0.3687 117 -0.19 93
IV.PLLN.EHZ. 2018-11-20T04:55:33.88 0.1 negative manual P 294 0.6898 104 0.61 79
IV.HMDC.HHZ. 2018-11-20T04:55:33.91 0.1 undecidable manual P 190 0.7644 102 -0.61 77
IV.GALF.HHZ. 2018-11-20T04:55:32.30 0.1 undecidable manual S 270 0.2968 123 -0.05 97
IV.RAFF.HHZ. 2018-11-20T04:55:32.72 0.1 undecidable manual P 223 0.6727 104 -0.27 86
IV.SSY.HHZ. 2018-11-20T04:55:31.07 0.1 undecidable manual P 169 0.5648 107 -0.15 90
IV.MPNC.HHZ. 2018-11-20T04:55:30.87 0.1 undecidable manual P 37 0.5405 108 0.05 93
IV.AGST.EHZ. 2018-11-20T04:55:29.98 0.1 negative manual P 154 0.509 109 -0.33 87
IV.HAGA.HHZ. 2018-11-20T04:55:29.20 0.1 negative manual P 158 0.4605 111 -0.32 88
IV.EPZF.HHZ. 2018-11-20T04:55:28.90 0.1 undecidable manual S 329 0.1295 149 0.06 100
IV.ESML.HHZ. 2018-11-20T04:55:28.80 0.6 undecidable manual S 208 0.107 153 0.28 48
IV.CAGR.HHE. 2018-11-20T04:55:28.70 0.1 undecidable manual P 256 0.3615 118 0.71 80
IV.EMCN.HNZ. 2018-11-20T04:55:28.90 0.3 undecidable manual S 43 0.1061 154 0.4 70
IV.HLNI.HHZ. 2018-11-20T04:55:27.63 0.1 negative manual P 189 0.3687 117 -0.47 87
IV.AIO.HHZ. 2018-11-20T04:55:27.86 0.1 positive manual P 42 0.3453 119 0.12 96
IV.ESLN.HHZ. 2018-11-20T04:55:27.50 0.3 undecidable manual S 128 0.0324 172 -0.34 72
IV.GALF.HHZ. 2018-11-20T04:55:26.31 0.1 negative manual P 270 0.2968 123 -0.72 81
IV.EPZF.HHZ. 2018-11-20T04:55:24.07 0.1 positive manual P 329 0.1295 149 -0.94 75
IV.ESML.HHZ. 2018-11-20T04:55:24.36 0.3 undecidable manual P 208 0.107 153 -0.46 69
IV.EMCN.HNZ. 2018-11-20T04:55:24.76 0.3 undecidable manual P 43 0.1061 154 -0.05 75
IV.ESLN.HHZ. 2018-11-20T04:55:23.84 0.1 negative manual P 128 0.0324 172 -0.59 89
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ESML.HHE. ML:0 0.0009140924 0.2208 AML other m 2018-11-20T04:55:30.42
IV.ESLN.HHN. ML:0 0.0012690645 0.24 AML other m 2018-11-20T04:55:28.03
IV.ESLN.HHE. ML:0 0.001445 0.76 AML other m 2018-11-20T04:55:28.60
IV.EPZF.HHE. ML:0 0.003757262 0.5984 AML other m 2018-11-20T04:55:29.38
IV.EPZF.HHN. ML:0 0.001779626 0.4416 AML other m 2018-11-20T04:55:29.45
IV.ESML.HHN. ML:0 0.000818419 0.5376 AML other m 2018-11-20T04:55:33.98
IV.GALF.HHN. ML:0 0.00038320425 0.4608 AML other m 2018-11-20T04:55:33.64
IV.GALF.HHE. ML:0 0.0006843466 0.3808 AML other m 2018-11-20T04:55:34.27
IV.HLNI.HHN. ML:0 0.0004329653 0.2816 AML other m 2018-11-20T04:55:34.76
IV.AIO.HHE. ML:0 0.0006473826 0.3584 AML other m 2018-11-20T04:55:34.61
IV.HLNI.HHE. ML:0 0.0003413256 0.1984 AML other m 2018-11-20T04:55:35.10
IV.AIO.HHN. ML:0 0.00031333455 0.2176 AML other m 2018-11-20T04:55:35.93
IV.HAGA.HHE. ML:0 0.0002290906 0.3584 AML other m 2018-11-20T04:55:37.22
IV.HAGA.HHN. ML:0 0.000182713345 0.1984 AML other m 2018-11-20T04:55:39.72
IV.MPNC.HHN. ML:0 0.0002766363 0.3008 AML other m 2018-11-20T04:55:41.15
IV.MPNC.HHE. ML:0 0.0002159324 0.4192 AML other m 2018-11-20T04:55:42.68
IV.HMDC.HHN. ML:0 0.000308378 0.3008 AML other m 2018-11-20T04:55:47.54
IV.HMDC.HHE. ML:0 0.00045231525 0.2784 AML other m 2018-11-20T04:55:46.90
IV.PLLN.EHE. ML:0 0.0003217535 0.5984 AML other m 2018-11-20T04:55:48.47
IV.PLLN.EHN. ML:0 0.0002971478 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 0.0010113093 0.1792 AML other m 2018-11-20T04:55:40.25
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Focal Mechanisms

Focal Mechanisms *

This map reports the focal mechanisms since 1977 in the region. The white and red beach ball symbols are mechanisms determined using the Regional Centroid Moment Tensor (RCMT, http://www.bo.ingv.it/RCMT) and are determined for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when there is a good source-receiver geometry of the target earthquake, the RCMT can be obtained also for earthquakes with magnitude larger than 4.0. The blue and white beach ball symbols indicate the mechanisms obtained from application of the Time Domain Moment Tensor (TDMT, http://terremoti.ingv.it/tdmt.html). This technique is used for M ≥ 3.5. The size of the beach ball sysmbol scales with the calculated moment magnitude, Mw.
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 full SEED format Download