Earthquake with magnitude of ML 2.0 on date 22-10-2020 and time 15:13:47 (Italy) in region 9 km N Ragalna (CT)

A magnitude ML 2.0 earthquake occured in region: 9 km N Ragalna (CT), on

  • 22-10-2020 13:13:47 (UTC)
  • 22-10-2020 15:13:47 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.711, 14.936 at 26 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 11 7641 71694
Bronte CT 13 19172 90866
Nicolosi CT 13 7463 98329
Belpasso CT 14 28108 126437
Maletto CT 15 3920 130357
Zafferana Etnea CT 15 9517 139874
Pedara CT 15 14102 153976
Paternò CT 15 48228 202204
Milo CT 16 1087 203291
Trecastagni CT 16 10910 214201
Camporotondo Etneo CT 17 5023 219224
San Pietro Clarenza CT 17 7743 226967
Viagrande CT 18 8563 235530
Santa Venerina CT 18 8592 244122
Mascalucia CT 18 31958 276080
Randazzo CT 19 10900 286980
Sant'Alfio CT 19 1582 288562
Tremestieri Etneo CT 19 20589 309151
Aci Bonaccorsi CT 20 3524 312675
Centuripe EN 20 5470 318145
Gravina di Catania CT 20 25838 343983

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)
77 Km SW of Messina (238439 inhabitants)
79 Km NW of Siracusa (122291 inhabitants)
81 Km E of Caltanissetta (63360 inhabitants)
89 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 3 days preceding this event

Earthquakes of the 3 days preceding this event *

This map reports the earthquake epicenters located in the 72 hours (3 days) preceding the time of the current earthquake occurrence, using the data acquired by the Italian National Seismic Network and by other collaborating networks in Italy and in the neighbouring countries. 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 90 days preceding this event

Earthquakes of the 90 days preceding this event *

This map reports the Magnitudo ≥ 1.0 earthquake epicenters located in the 90 days preceding the time of the current earthquake occurrence, 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 from 1985 to the date of the event

Earthquakes from 1985 to the date of the event *

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 2019

Earthquakes since 1000 AD until 2019 *

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
Preliminary map of the earthquake effects from the web questionnaire

Preliminary map of the earthquake effects from the web 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
Bulletin
Rev1000
ML 2.0 2020-10-22
13:13:47
37.7113 14.9363 26 2021-02-26
14:56:18
Bollettino Sismico Italiano INGV 87122481
Reviewed
Rev200
ML 2.1 2020-10-22
13:13:46
37.713 14.883 22 2021-02-23
10:59:57
Sala Operativa INGV_OE (Catania) 84028691
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-22 13:13:47 ± 0.14
Latitude 37.7113 ± 0.0054
Longitude 14.9363 ± 0.0102
Depth (km) 26 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 87122481

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 945
Semi-minor axis of confidence ellipse (meter) 151
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 259
Circular confidence region, given by single value of horizontal uncertainty (meter) 940
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 98
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) 0.37
Epicentral distance of station closest to the epicenter (degree) 0.03148
Epicentral distance of station farthest from the epicenter (degree) 0.76532
Number of stations at which the event was observed 19
Number of stations from which data was used for origin computation 19
Magnitudes information

ML:2

Field Value
Value 2
Uncertainty 0.4
Num. used stations 20
Type of magnitude ML
Reference to an origin 87122481
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-02-13 18:50:27

ML:2.1

Field Value
Value 2.1
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 84028691
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2020-10-22 13:25:28
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.HAVL.HHZ. 2020-10-22T13:14:12.73 0.3 undecidable manual S 169 0.7653 102 0.12 66
IV.HMDC.HHZ. 2020-10-22T13:14:12.92 0.3 undecidable manual S 189 0.7617 102 0.42 62
IV.SSY.HHZ. 2020-10-22T13:14:07.33 0.6 undecidable manual S 169 0.5639 107 0.51 42
IV.CAGR.HHZ. 2020-10-22T13:14:05.36 0.6 undecidable manual S 256 0.357 117 4.26 2
IV.HAGA.HHZ. 2020-10-22T13:14:03.79 0.3 undecidable manual S 158 0.4605 111 -0.11 72
IV.HCRL.HHN. 2020-10-22T13:14:03.23 0.3 undecidable manual S 170 0.4344 112 0.02 72
IV.MSFR.HHZ. 2020-10-22T13:14:02.54 0.3 undecidable manual S 320 0.4218 113 -0.31 69
IV.MUCR.HHZ. 2020-10-22T13:14:01.25 0.3 undecidable manual S 352 0.3354 119 0.71 63
IV.HMDC.HHZ. 2020-10-22T13:14:01.21 0.3 undecidable manual P 189 0.7617 102 -0.53 62
IV.AIO.HHZ. 2020-10-22T13:14:01.40 0.3 undecidable manual S 42 0.3498 118 0.48 68
IV.HLNI.HHE. 2020-10-22T13:14:01.42 0.3 undecidable manual S 188 0.366 117 0.06 73
IV.HAVL.HHZ. 2020-10-22T13:14:01.42 0.3 undecidable manual P 169 0.7653 102 -0.39 64
IV.PETRA.HHZ. 2020-10-22T13:14:00.60 0.3 undecidable manual P 281 0.6601 104 0.55 62
IV.RAFF.HHZ. 2020-10-22T13:13:59.97 0.3 undecidable manual P 223 0.6682 104 -0.21 67
IV.SSY.HHZ. 2020-10-22T13:13:58.35 0.1 undecidable manual P 169 0.5639 107 -0.11 94
IV.HAGA.HHZ. 2020-10-22T13:13:57.04 0.3 undecidable manual P 158 0.4605 111 0.26 69
IV.ESML.HHZ. 2020-10-22T13:13:56.22 0.3 undecidable manual S 206 0.1034 154 0.56 67
IV.MSFR.HHZ. 2020-10-22T13:13:56.18 0.3 undecidable manual P 320 0.4218 113 0.01 74
IV.HCRL.HHN. 2020-10-22T13:13:56.11 0.1 undecidable manual P 170 0.4344 112 -0.27 94
IV.CAGR.HHZ. 2020-10-22T13:13:56.19 0.1 undecidable manual P 256 0.357 117 1.03 71
IV.AIO.HHZ. 2020-10-22T13:13:55.31 0.1 undecidable manual P 42 0.3498 118 0.25 95
IV.MUCR.HHZ. 2020-10-22T13:13:54.40 0.1 undecidable manual P 352 0.3354 119 -0.44 91
IV.HLNI.HHE. 2020-10-22T13:13:54.82 0.1 undecidable manual P 188 0.366 117 -0.49 90
IV.GALF.HHZ. 2020-10-22T13:13:53.95 0.3 undecidable manual P 270 0.2923 123 -0.26 72
IV.ECBD.HHN. 2020-10-22T13:13:52.29 0.3 undecidable manual P 60 0.1367 147 -0.02 78
IV.ESML.HHZ. 2020-10-22T13:13:52.02 0.3 undecidable manual P 206 0.1034 154 0 78
IV.EPIT.HHZ. 2020-10-22T13:13:52.49 0.1 undecidable manual P 44 0.1376 146 0.18 100
IV.EPZF.HHZ. 2020-10-22T13:13:51.63 0.1 undecidable manual P 331 0.1286 148 -0.6 90
IV.ECHR.HNZ. 2020-10-22T13:13:51.22 0.1 undecidable manual P 216 0.0315 172 -0.43 98
IV.EMSG.HHZ. 2020-10-22T13:13:51.70 0.3 undecidable manual P 6 0.1097 152 -0.37 73
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.MUCR.HHE. ML:0 0.00010425858 0.5184 AML other m 2020-10-22T13:14:01.37
IV.AIO.HHE. ML:2 0.0002835 1.56 AML other m 2020-10-22T13:14:02.95
IV.AIO.HHN. ML:1.8 0.00017195005 0.3648 AML other m 2020-10-22T13:14:02.92
IV.MUCR.HHN. ML:0 9.8274115E-5 0.4224 AML other m 2020-10-22T13:14:03.31
IV.MSFR.HHN. ML:1.2 3.9801385E-5 0.9856 AML other m 2020-10-22T13:14:10.04
IV.MSFR.HHE. ML:1.3 5.125E-5 0.3 AML other m 2020-10-22T13:14:05.05
IV.CAGR.HHE. ML:2.3 0.000627 1.36 AML other m 2020-10-22T13:14:06.91
IV.CAGR.HHN. ML:2.2 0.0004 1.24 AML other m 2020-10-22T13:14:06.31
IV.SSY.HHE. ML:2.4 0.00054 0.62 AML other m 2020-10-22T13:14:07.50
IV.SSY.HHN. ML:2.8 0.0011135 0.26 AML other m 2020-10-22T13:14:10.52
IV.RAFF.HHN. ML:1.6 5.59E-5 0.42 AML other m 2020-10-22T13:14:11.12
IV.RAFF.HHE. ML:1.8 8.165E-5 0.48 AML other m 2020-10-22T13:14:12.20
IV.HAVL.HHN. ML:2.5 0.0003845 0.8 AML other m 2020-10-22T13:14:13.99
IV.HAVL.HHE. ML:2.3 0.000251 1.4 AML other m 2020-10-22T13:14:14.87
IV.HMDC.HHE. ML:2.2 0.000176 0.26 AML other m 2020-10-22T13:14:14.31
IV.HMDC.HHN. ML:2 0.0001305 0.8 AML other m 2020-10-22T13:14:14.61
IV.PETRA.HHE. ML:1.6 6.02E-5 0.38 AML other m 2020-10-22T13:14:15.23
IV.PETRA.HHN. ML:1.6 5.81E-5 0.74 AML other m 2020-10-22T13:14:18.24
IV.PIPA.HHE. ML:2.2 3.12E-5 0.06 AML other m 2020-10-22T13:14:52.19
IV.PIPA.HHN. ML:2.2 3.055E-5 0.54 AML other m 2020-10-22T13:14:52.42
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Fault Plane solutions

Fault Plane solutions *

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 miniseed + resp format Download