Earthquake with magnitude of ML 2.2 on date 30-11-2020 and time 23:02:11 (Italy) in region 2 km SW Ragalna (CT)

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

  • 30-11-2020 22:02:11 (UTC)
  • 30-11-2020 23:02:11 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.6230, 14.9250 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 2 3924 3924
Santa Maria di Licodia CT 3 7641 11565
Paternò CT 5 48228 59793
Biancavilla CT 5 24007 83800
Belpasso CT 6 28108 111908
Nicolosi CT 9 7463 119371
Adrano CT 9 36122 155493
Camporotondo Etneo CT 9 5023 160516
San Pietro Clarenza CT 10 7743 168259
Pedara CT 12 14102 182361
Mascalucia CT 13 31958 214319
Motta Sant'Anastasia CT 13 12116 226435
Misterbianco CT 13 49410 275845
Trecastagni CT 14 10910 286755
Gravina di Catania CT 14 25838 312593
Tremestieri Etneo CT 14 20589 333182
Viagrande CT 15 8563 341745
Sant'Agata li Battiati CT 15 9479 351224
San Giovanni la Punta CT 16 23060 374284
Centuripe EN 16 5470 379754
Aci Bonaccorsi CT 17 3524 383278
San Gregorio di Catania CT 17 11966 395244
Zafferana Etnea CT 18 9517 404761
Aci Sant'Antonio CT 18 17984 422745
Valverde CT 18 7840 430585
Aci Catena CT 19 29851 460436
Catania CT 20 314555 774991

Municipalities with at least 50000 inhabitants

An earthquake occurred to
20 Km NW of Catania (314555 inhabitants)
21 Km W of Acireale (52622 inhabitants)
71 Km NW of Siracusa (122291 inhabitants)
77 Km E of Caltanissetta (63360 inhabitants)
79 Km N of Ragusa (73313 inhabitants)
82 Km NE of Vittoria (63339 inhabitants)
83 Km SW of Reggio di Calabria (183035 inhabitants)
84 Km SW of Messina (238439 inhabitants)
86 Km NE of Gela (75827 inhabitants)
86 Km N of Modica (54633 inhabitants)
Recent and historical seismicity

These maps show the seismic activity in different time intervals, before the seismic event to which they refer. Data reported in the first two maps come from the analysis carried out in real time by the personnel of the INGV Operating Rooms, immediately after each earthquake. The third map shows data from 1985 to the date of the earthquake: the locations are reviewed by the seismological analysts of the INGV Italian Seismic Bulletin (Bollettino Sismico Italiano dell’INGV). The localization parameters (hypocentral coordinates and magnitude) are the best possible estimate with the data available to the INGV, but are constantly updated according to further data that become available. The location and magnitude parameters, subsequently reviewed by seismological analysts, may vary.

Earthquakes of the 3 days preceding this event

Earthquakes of the 3 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 0.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 72 hours preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is the epicenter of the current earthquake.
Earthquakes of the 90 days preceding this event

Earthquakes of the 90 days preceding this event

This map shows the earthquake epicenters with magnitude ≥ 2.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, in the 90 days preceding this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is 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 shows the earthquake epicenters with magnitude ≥ 3.0, localized with data recorded by the National Seismic Network and other collaborative networks both in Italy and in neighboring countries, from 1985 to the date of this event. The size of the circle indicates the different classes of magnitude. The colors indicate the different time intervals preceding the seismic event. The black and white star is 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 3.0, https://doi.org/10.13127/cpti/cpti15.3) since 1000 AD until 2019. The size of the square indicates the different classes of magnitude. For earthquakes with magnitude ≥ 6.0, it is also shown the year of occurrence and the magnitude value. The black and white star is the epicenter of the current earthquake.
Seismic hazard

Seismic hazard maps provide probabilistic estimates of the earthquake ground shaking exceeding a given threshold in a given geographic region within a given time window. Thus, it is not a deterministic prediction - a target that may be never reached given the complexity of the earthquake physical phenomenon - nor of the maximum expected earthquake since this has extremely low probabilities to occur.

In 2004, it was published the seismic hazard map of Italy (http://zonesismiche.mi.ingv.it) that provides a picture of the most hazardous geographic regions. The seismic hazard map of Italy (GdL MPS, 2004; rif. Ordinanza PCM del 28 aprile 2006, n. 3519, All. 1b) provides the 10% probability of exceedance in 50 years of the horizontal acceleration at rock sites (i.e., Vs30>800 m/s; cat. A, 3.2.1 of the D.M. 14.09.2005).

The colours indicate the various values of the ground acceleration that have 10% to be exceeded within 50 years. In general, the colours associated to low values of acceleration refer to areas that are less hazardous and stronger earthquakes repeat less frequently although they may still occur.

Seismic hazard map

Seismic hazard map

This map shows the seismic hazard map of Italy for the region where the earthquake occurred.
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 2020-11-30
22:02:11
37.6228 14.9248 9 2021-02-26
14:56:10
Bollettino Sismico Italiano INGV 85446281
Reviewed
Rev200
ML 1.9 2020-11-30
22:02:10
37.625 14.95 4 2021-01-28
15:47:01
Sala Operativa INGV_OE (Catania) 85118051
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-11-30 22:02:11 ± 0.09
Latitude 37.6228 ± 0.0063
Longitude 14.9248 ± 0.0091
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 85446281

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 772
Semi-minor axis of confidence ellipse (meter) 617
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 320
Circular confidence region, given by single value of horizontal uncertainty (meter) 770.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 63
Number of associated phases, regardless of their use for origin computation 29
Number of defining phases 29
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.35
Epicentral distance of station closest to the epicenter (degree) 0.03597
Epicentral distance of station farthest from the epicenter (degree) 0.68079
Number of stations at which the event was observed 20
Number of stations from which data was used for origin computation 20
Magnitudes information

ML:2.2

Field Value
Value 2.2
Uncertainty 0.2
Num. used stations 14
Type of magnitude ML
Reference to an origin 85446281
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-01-28 15:46:48

ML:1.9

Field Value
Value 1.9
Uncertainty 0.1
Num. used stations
Type of magnitude ML
Reference to an origin 85118051
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2020-11-30 23:34:25
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.HMDC.HHZ. 2020-11-30T22:02:34.89 0.6 undecidable manual S 190 0.6727 50 0.89 35
IV.HAVL.HHZ. 2020-11-30T22:02:34.69 0.6 undecidable manual S 167 0.6808 50 0.44 42
IV.SSY.HHZ. 2020-11-30T22:02:28.64 0.3 undecidable manual S 166 0.4793 50 0.37 66
IV.HMDC.HHZ. 2020-11-30T22:02:25.24 0.6 undecidable manual P 190 0.6727 50 0.93 35
IV.HAVL.HHZ. 2020-11-30T22:02:24.01 0.3 undecidable manual P 167 0.6808 50 -0.45 63
IV.RAFF.HHZ. 2020-11-30T22:02:23.19 0.3 undecidable manual P 228 0.5998 50 0.13 68
IV.HLNI.HHZ. 2020-11-30T22:02:22.54 0.3 undecidable manual S 189 0.2770 106 0.35 69
IV.SSY.HHZ. 2020-11-30T22:02:20.84 0.1 undecidable manual P 166 0.4793 50 -0.17 92
IV.AIO.HHZ. 2020-11-30T22:02:20.01 0.3 undecidable manual P 35 0.4245 50 -0.06 72
IV.EPOZ.HNZ. 2020-11-30T22:02:20.24 0.3 undecidable manual S 77 0.2140 110 0.36 70
IV.HVZN.HNZ. 2020-11-30T22:02:20.55 0.3 undecidable manual P 201 0.4739 50 -0.37 66
IV.AGST.EHE. 2020-11-30T22:02:19.46 0.3 undecidable manual P 147 0.4380 50 -0.83 57
IV.EVRN.HHZ. 2020-11-30T22:02:19.15 0.3 undecidable manual S 68 0.1799 114 0.51 68
IV.HAGA.HHZ. 2020-11-30T22:02:18.74 0.3 undecidable manual P 152 0.3840 50 -0.63 63
IV.GALF.HHZ. 2020-11-30T22:02:18.78 0.6 undecidable manual P 287 0.2968 50 0.9 38
IV.EFIU.HHE. 2020-11-30T22:02:17.27 0.6 undecidable manual P 53 0.2806 106 -0.29 47
IV.ECTS.HHZ. 2020-11-30T22:02:17.54 0.6 undecidable manual P 31 0.3022 50 -0.43 45
IV.EPOZ.HNZ. 2020-11-30T22:02:16.16 0.3 undecidable manual P 77 0.2140 110 -0.01 75
IV.EMSG.HHZ. 2020-11-30T22:02:16.10 0.3 undecidable manual P 6 0.1988 112 0.26 72
IV.HLNI.HHZ. 2020-11-30T22:02:16.90 0.3 undecidable manual P 189 0.2770 106 -0.6 65
IV.EPZF.HHZ. 2020-11-30T22:02:16.57 0.3 undecidable manual P 345 0.2077 111 0.54 67
IV.ESLN.HHZ. 2020-11-30T22:02:15.51 0.3 undecidable manual S 29 0.0809 134 0.08 76
IV.EVRN.HHZ. 2020-11-30T22:02:15.32 0.3 undecidable manual P 68 0.1799 114 -0.12 74
IV.ESML.HHZ. 2020-11-30T22:02:14.73 0.6 undecidable manual S 262 0.0360 155 0.3 49
IV.ECHR.HNZ. 2020-11-30T22:02:14.59 0.6 undecidable manual S 352 0.0639 141 -0.4 48
IV.ECHR.HNZ. 2020-11-30T22:02:13.04 0.3 undecidable manual P 352 0.0639 141 -0.31 73
IV.ENIC.HHZ. 2020-11-30T22:02:13.68 0.3 undecidable manual P 84 0.0773 136 0.14 75
IV.ESLN.HHZ. 2020-11-30T22:02:13.34 0.3 undecidable manual P 29 0.0809 134 -0.25 74
IV.ESML.HHZ. 2020-11-30T22:02:12.81 0.1 undecidable manual P 262 0.0360 155 -0.2 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ESLN.HHN. ML:2.3 0.0027300000000000002 1.5 AML other m 2020-11-30T22:02:15.02
IV.ESLN.HHE. ML:2.3 0.0029050000000000005 1.38 AML other m 2020-11-30T22:02:17.10
IV.ENIC.HHN. ML:2.3 0.002885 0.82 AML other m 2020-11-30T22:02:17.56
IV.ENIC.HNE. ML:2.4 0.003665 0.24 AML other m 2020-11-30T22:02:19.11
IV.ENIC.HHE. ML:2.3 0.0027949999999999997 0.16 AML other m 2020-11-30T22:02:19.22
IV.ENIC.HNN. ML:2.4 0.003515 0.96 AML other m 2020-11-30T22:02:19.44
IV.EPZF.HHN. ML:2.2 0.0009555 1.64 AML other m 2020-11-30T22:02:23.82
IV.HLNI.HHN. ML:1.6 0.00017085 0.52 AML other m 2020-11-30T22:02:23.19
IV.EPZF.HHE. ML:2.1 0.0009285 0.4 AML other m 2020-11-30T22:02:24.28
IV.HLNI.HHE. ML:1.5 0.0001445 0.56 AML other m 2020-11-30T22:02:25.30
IV.GALF.HHN. ML:2.1 0.000626 0.42 AML other m 2020-11-30T22:02:30.04
IV.GALF.HHE. ML:2.1 0.0005915 0.36 AML other m 2020-11-30T22:02:30.47
IV.SSY.HHE. ML:2.3 0.00046750000000000003 0.74 AML other m 2020-11-30T22:02:32.43
IV.SSY.HHN. ML:2.5 0.0007244999999999999 0.42 AML other m 2020-11-30T22:02:37.24
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Fault Plane solutions

Fault Plane solutions

The map reports the fault plane solutions for earthquakes in the region from 1977 to the date of this event. Red moment tensors are determined using the Regional Centroid Moment Tensor technique (RCMT, http://www.bo.ingv.it/RCMT) applied for earthquakes with magnitude larger than 4.5 in the Euro-Mediterranenan area. Occasionally, when a station azimuthal coverage exists RCMTs can be obtained also for earthquakes with magnitude down to 4.0. The gray moment tensors are obtained with the Time Domain Moment Tensor method (TDMT, http://terremoti.ingv.it/tdmt). This technique is applied to earthquakes with magnitude ML greater than 3.2, when it is possible. The size of symbols 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