Earthquake with magnitude of ML 2.1 on date 22-10-2020 and time 19:39:49 (Italy) in region 9 km NE Biancavilla (CT)

A magnitude ML 2.1 earthquake occured in region: 9 km NE Biancavilla (CT), on

  • 22-10-2020 17:39:49 (UTC)
  • 22-10-2020 19:39:49 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.711, 14.921 at 28 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
Biancavilla CT 9 24007 24007
Ragalna CT 9 3924 27931
Adrano CT 9 36122 64053
Santa Maria di Licodia CT 11 7641 71694
Bronte CT 12 19172 90866
Maletto CT 14 3920 94786
Belpasso CT 14 28108 122894
Nicolosi CT 14 7463 130357
Paternò CT 15 48228 178585
Pedara CT 16 14102 192687
Zafferana Etnea CT 16 9517 202204
Milo CT 17 1087 203291
Trecastagni CT 17 10910 214201
Camporotondo Etneo CT 18 5023 219224
San Pietro Clarenza CT 18 7743 226967
Centuripe EN 19 5470 232437
Randazzo CT 19 10900 243337
Viagrande CT 19 8563 251900
Mascalucia CT 19 31958 283858
Santa Venerina CT 19 8592 292450
Maniace CT 20 3765 296215
Tremestieri Etneo CT 20 20589 316804

Municipalities with at least 50000 inhabitants

An earthquake occurred to
24 Km W of Acireale (52622 inhabitants)
27 Km NW of Catania (314555 inhabitants)
78 Km SW of Messina (238439 inhabitants)
78 Km SW of Reggio di Calabria (183035 inhabitants)
79 Km NW of Siracusa (122291 inhabitants)
79 Km E of Caltanissetta (63360 inhabitants)
89 Km N of Ragusa (73313 inhabitants)
91 Km NE of Vittoria (63339 inhabitants)
93 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 2.1 2020-10-22
17:39:49
37.7107 14.9207 28 2021-02-26
14:56:19
Bollettino Sismico Italiano INGV 87156511
Reviewed
Rev200
ML 2.1 2020-10-22
17:39:49
37.718 14.888 21 2021-02-23
12:06:43
Sala Operativa INGV_OE (Catania) 84032591
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-22 17:39:49 ± 0.14
Latitude 37.7107 ± 0.0045
Longitude 14.9207 ± 0.0080
Depth (km) 28 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 87156511

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 633
Semi-minor axis of confidence ellipse (meter) 336
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 277
Circular confidence region, given by single value of horizontal uncertainty (meter) 630
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 40
Number of associated phases, regardless of their use for origin computation 49
Number of defining phases 49
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) 0.02518
Epicentral distance of station farthest from the epicenter (degree) 1.00544
Number of stations at which the event was observed 30
Number of stations from which data was used for origin computation 30
Magnitudes information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 48
Type of magnitude ML
Reference to an origin 87156511
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-02-14 18:20:41

ML:2.1

Field Value
Value 2.1
Uncertainty 0.1
Num. used stations
Type of magnitude ML
Reference to an origin 84032591
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2020-10-22 17:53:36
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.HPAC.HHZ. 2020-10-22T17:40:22.06 0.6 undecidable manual S 175 1.0054 100 -0.38 39
IV.IACL.HHZ. 2020-10-22T17:40:21.24 0.6 undecidable manual S 332 0.9344 101 0.88 34
IV.HAVL.HHZ. 2020-10-22T17:40:15.69 0.3 undecidable manual S 168 0.7671 103 0.18 63
IV.HMDC.HHZ. 2020-10-22T17:40:15.83 0.3 undecidable manual S 188 0.759 103 0.56 58
IV.SSY.HHZ. 2020-10-22T17:40:10.01 0.3 undecidable manual S 168 0.5657 108 0.25 65
IV.HPAC.HHZ. 2020-10-22T17:40:08.36 0.1 undecidable manual P 175 1.0054 100 -0.28 79
IV.CAGR.HHZ. 2020-10-22T17:40:08.11 0.6 undecidable manual S 255 0.3444 121 4.34 2
IV.AGST.EHZ. 2020-10-22T17:40:08.46 0.3 undecidable manual S 152 0.5153 110 0.13 67
IV.IACL.HHZ. 2020-10-22T17:40:07.34 0.1 undecidable manual P 332 0.9344 101 -0.1 82
IV.HCRL.HHZ. 2020-10-22T17:40:06.06 0.6 undecidable manual S 168 0.4362 114 -0.13 46
IV.HAGA.HHZ. 2020-10-22T17:40:06.77 0.3 undecidable manual S 156 0.4641 113 -0.17 68
IV.HLNI.HHZ. 2020-10-22T17:40:04.45 0.3 undecidable manual S 186 0.3642 119 0.18 69
IV.AIO.HHZ. 2020-10-22T17:40:04.39 0.3 undecidable manual S 43 0.3588 120 0.26 68
IV.HAVL.HHZ. 2020-10-22T17:40:04.43 0.1 undecidable manual P 168 0.7671 103 -0.21 84
IV.MSRU.HHZ. 2020-10-22T17:40:04.37 0.3 undecidable manual P 40 0.7213 104 0.5 60
IV.HMDC.HHZ. 2020-10-22T17:40:04.33 0.1 undecidable manual P 188 0.759 103 -0.17 85
IV.MTTG.HHZ. 2020-10-22T17:40:03.50 0.6 undecidable manual P 64 0.6808 105 0.3 42
IV.RAFF.HHZ. 2020-10-22T17:40:03.00 0.1 undecidable manual P 222 0.6592 106 0.16 87
IV.PETRA.HHZ. 2020-10-22T17:40:03.12 0.6 undecidable manual P 281 0.6484 106 0.45 41
IV.GALF.HHZ. 2020-10-22T17:40:02.38 0.6 undecidable manual S 270 0.2797 127 0.2 47
IV.SSY.HHZ. 2020-10-22T17:40:01.31 0.1 undecidable manual P 168 0.5657 108 -0.01 92
IV.EPOZ.HHZ. 2020-10-22T17:40:01.97 0.3 undecidable manual S 100 0.2149 135 1.23 47
IV.EFIU.HHZ. 2020-10-22T17:40:01.74 0.3 undecidable manual S 71 0.2419 132 0.43 67
IV.ECTS.HHZ. 2020-10-22T17:40:00.73 0.3 undecidable manual S 43 0.2329 133 -0.38 68
IV.AGST.EHZ. 2020-10-22T17:40:00.33 0.1 undecidable manual P 152 0.5153 110 -0.17 90
IV.ESML.HHZ. 2020-10-22T17:39:59.09 0.3 undecidable manual S 199 0.098 157 0.32 70
IV.EPIT.HHZ. 2020-10-22T17:39:59.53 0.3 undecidable manual S 47 0.1475 147 0.07 74
IV.EVRN.HHZ. 2020-10-22T17:39:59.20 0.3 undecidable manual S 97 0.1709 142 -0.68 63
IV.HCRL.HHZ. 2020-10-22T17:39:59.32 0.3 undecidable manual P 168 0.4362 114 0.06 70
IV.EPZF.HHZ. 2020-10-22T17:39:59.33 0.6 undecidable manual S 336 0.1241 151 0.22 48
IV.HAGA.HHZ. 2020-10-22T17:39:59.46 0.1 undecidable manual P 156 0.4641 113 -0.23 90
IV.MSFR.HHZ. 2020-10-22T17:39:58.98 0.1 undecidable manual P 321 0.4146 116 0.07 94
IV.CAGR.HHZ. 2020-10-22T17:39:58.89 0.1 undecidable manual P 255 0.3444 121 1.03 70
IV.AIO.HHZ. 2020-10-22T17:39:58.27 0.1 undecidable manual P 43 0.3588 120 0.2 92
IV.EVRN.HHZ. 2020-10-22T17:39:57.20 0.3 undecidable manual P 97 0.1709 142 1.59 39
IV.HLNI.HHZ. 2020-10-22T17:39:57.74 0.1 undecidable manual P 186 0.3642 119 -0.41 88
IV.MUCR.HHZ. 2020-10-22T17:39:57.41 0.1 undecidable manual P 354 0.3345 122 -0.3 90
IV.EPOZ.HHZ. 2020-10-22T17:39:56.28 0.1 undecidable manual P 100 0.2149 135 0.17 95
IV.EFIU.HHZ. 2020-10-22T17:39:56.62 0.3 undecidable manual P 71 0.2419 132 0.18 71
IV.ECTS.HHZ. 2020-10-22T17:39:56.10 0.3 undecidable manual P 43 0.2329 133 -0.23 70
IV.GALF.HHZ. 2020-10-22T17:39:56.81 0.1 undecidable manual P 270 0.2797 127 -0.14 94
IV.ENIC.HHZ. 2020-10-22T17:39:55.09 0.1 undecidable manual P 135 0.1124 154 0.01 100
IV.EPIT.HHZ. 2020-10-22T17:39:55.35 0.3 undecidable manual P 47 0.1475 147 -0.02 74
IV.EPZF.HHZ. 2020-10-22T17:39:54.57 0.1 positive manual P 336 0.1241 151 -0.6 86
IV.EMCN.HHZ. 2020-10-22T17:39:54.59 0.1 undecidable manual P 48 0.1205 152 -0.55 88
IV.ESML.HHZ. 2020-10-22T17:39:54.74 0.1 undecidable manual P 199 0.098 157 -0.24 96
IV.ESLN.HHZ. 2020-10-22T17:39:54.16 0.3 undecidable manual P 112 0.0459 169 -0.55 67
IV.EMSG.HHZ. 2020-10-22T17:39:54.64 0.1 positive manual P 12 0.1124 154 -0.44 91
IV.ECHR.HNZ. 2020-10-22T17:39:54.16 0.1 undecidable manual P 194 0.0252 174 -0.49 92
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.EPZF.HHE. ML:2.4 0.001305 0.48 AML other m 2020-10-22T17:39:59.75
IV.EMSG.HHE. ML:2.3 0.00098318855 0.2432 AML other m 2020-10-22T17:40:01.94
IV.EPZF.HHN. ML:2.3 0.00109 0.28 AML other m 2020-10-22T17:40:00.68
IV.ESML.HHE. ML:2.4 0.001165 0.26 AML other m 2020-10-22T17:40:01.20
IV.EPOZ.HHN. ML:2.1 0.0005775 0.16 AML other m 2020-10-22T17:40:02.67
IV.ENIC.HHE. ML:2.4 0.00124 0.18 AML other m 2020-10-22T17:40:03.75
IV.ENIC.HNE. ML:2.4 0.00144 0.16 AML other m 2020-10-22T17:40:03.85
IV.EPOZ.HHE. ML:2.1 0.00053532245 0.32 AML other m 2020-10-22T17:40:04.08
IV.EMSG.HHN. ML:2.3 0.0010371335 0.2048 AML other m 2020-10-22T17:40:01.13
IV.MUCR.HHE. ML:1.7 0.0001365 0.5 AML other m 2020-10-22T17:40:04.35
IV.GALF.HHN. ML:2.2 0.000636 0.3 AML other m 2020-10-22T17:40:04.77
IV.GALF.HHE. ML:2.5 0.00111 0.58 AML other m 2020-10-22T17:40:04.90
IV.HLNI.HHE. ML:1.9 0.000208 0.08 AML other m 2020-10-22T17:40:04.97
IV.HLNI.HHN. ML:1.9 0.00022020795 0.1024 AML other m 2020-10-22T17:40:04.83
IV.AIO.HHE. ML:2 0.0003023563 0.4096 AML other m 2020-10-22T17:40:04.92
IV.AIO.HHN. ML:1.9 0.0002045157 0.256 AML other m 2020-10-22T17:40:05.30
IV.ENIC.HHN. ML:2.4 0.001205 0.26 AML other m 2020-10-22T17:40:06.30
IV.MUCR.HHN. ML:1.6 0.00012367625 0.32 AML other m 2020-10-22T17:40:06.75
IV.ENIC.HNN. ML:2.4 0.0012412238 0.2176 AML other m 2020-10-22T17:40:06.21
IV.HAGA.HHE. ML:1.8 0.00013633895 0.2432 AML other m 2020-10-22T17:40:10.16
IV.HAGA.HHN. ML:1.8 0.00012456545 0.1024 AML other m 2020-10-22T17:40:11.56
IV.MSFR.HHN. ML:1.4 6.38E-5 0.72 AML other m 2020-10-22T17:40:08.24
IV.HCRL.HHE. ML:2 0.00020548875 0.0896 AML other m 2020-10-22T17:40:08.01
IV.MSFR.HHE. ML:1.5 7.16E-5 1.3 AML other m 2020-10-22T17:40:08.12
IV.AGST.EHE. ML:2.2 0.0002919991 0.2304 AML other m 2020-10-22T17:40:12.09
IV.HCRL.HHN. ML:1.9 0.0001693741 0.1408 AML other m 2020-10-22T17:40:09.91
IV.AGST.EHN. ML:2.2 0.0002956485 0.1408 AML other m 2020-10-22T17:40:12.04
IV.SSY.HHN. ML:2.9 0.0013106025 0.2048 AML other m 2020-10-22T17:40:12.22
IV.SSY.HHE. ML:2.5 0.00063094155 0.1536 AML other m 2020-10-22T17:40:10.39
IV.RAFF.HHE. ML:1.7 6.323332E-5 0.256 AML other m 2020-10-22T17:40:15.33
IV.HAVL.HHN. ML:2.7 0.0005640868 0.1408 AML other m 2020-10-22T17:40:16.89
IV.MSRU.HHN. ML:1.9 9.615E-5 0.28 AML other m 2020-10-22T17:40:17.03
IV.HMDC.HHE. ML:2.2 0.00020105085 0.1536 AML other m 2020-10-22T17:40:17.21
IV.HAVL.HHE. ML:2.5 0.00038144625 0.1664 AML other m 2020-10-22T17:40:16.76
IV.PETRA.HHE. ML:1.7 7.11E-5 0.44 AML other m 2020-10-22T17:40:18.30
IV.HMDC.HHN. ML:2.2 0.0001893604 0.128 AML other m 2020-10-22T17:40:18.10
IV.RAFF.HHN. ML:1.6 6.021835E-5 0.3968 AML other m 2020-10-22T17:40:19.55
IV.MSRU.HHE. ML:1.9 0.0001069 0.28 AML other m 2020-10-22T17:40:20.03
IV.IACL.HHN. ML:1.9 6.789473E-5 0.3968 AML other m 2020-10-22T17:40:24.98
IV.PETRA.HHN. ML:1.6 6.7399355E-5 0.4608 AML other m 2020-10-22T17:40:21.15
IV.IACL.HHE. ML:1.9 6.958152E-5 0.32 AML other m 2020-10-22T17:40:26.60
IV.HPAC.HHN. ML:2 8.63124605E-5 0.3584 AML other m 2020-10-22T17:40:26.58
IV.HPAC.HHE. ML:2.1 9.92772E-5 0.32 AML other m 2020-10-22T17:40:29.91
IV.GALF.HNE. ML:1.5 0.00011685155 0.7808 AML other m 2020-10-22T17:40:08.23
IV.GALF.HNN. ML:1.6 0.000118792075 0.4096 AML other m 2020-10-22T17:40:05.58
IV.MTTG.HHN. ML:1.6 5.648117E-5 0.6272 AML other m 2020-10-22T17:40:21.43
IV.HMDC.HNN. ML:2.1 0.00014020165 0.1152 AML other m 2020-10-22T17:40:18.04
IV.HMDC.HNE. ML:2.3 0.00024732765 0.3712 AML other m 2020-10-22T17:40:17.21
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