Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 30-11-2020 and time 23:09:51 (Italy) in region 2 km SW Ragalna (CT)

A magnitude ML 1.8 earthquake occured in region: 2 km SW Ragalna (CT), on

  • 30-11-2020 22:09:51 (UTC)
  • 30-11-2020 23:09:51 (UTC +01:00) Italian time

and geographic coordinates (lat, lon) 37.6190, 14.9300 at 8 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.

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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 4 7641 11565
Belpasso CT 5 28108 39673
Paternò CT 5 48228 87901
Biancavilla CT 6 24007 111908
Nicolosi CT 9 7463 119371
Camporotondo Etneo CT 9 5023 124394
San Pietro Clarenza CT 10 7743 132137
Adrano CT 10 36122 168259
Pedara CT 12 14102 182361
Mascalucia CT 12 31958 214319
Motta Sant'Anastasia CT 12 12116 226435
Misterbianco CT 13 49410 275845
Trecastagni CT 13 10910 286755
Gravina di Catania CT 13 25838 312593
Tremestieri Etneo CT 13 20589 333182
Viagrande CT 15 8563 341745
Sant'Agata li Battiati CT 15 9479 351224
San Giovanni la Punta CT 15 23060 374284
Aci Bonaccorsi CT 16 3524 377808
Centuripe EN 17 5470 383278
San Gregorio di Catania CT 17 11966 395244
Aci Sant'Antonio CT 17 17984 413228
Zafferana Etnea CT 18 9517 422745
Valverde CT 18 7840 430585
Aci Catena CT 19 29851 460436
Catania CT 19 314555 774991
Santa Venerina CT 20 8592 783583

Municipalities with at least 50000 inhabitants

An earthquake occurred to
19 Km NW of Catania (314555 inhabitants)
21 Km W of Acireale (52622 inhabitants)
70 Km NW of Siracusa (122291 inhabitants)
78 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 N of Modica (54633 inhabitants)
86 Km NE of Gela (75827 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
Bulletin
Rev1000 		ML 1.8 2020-11-30
22:09:51		 37.6187 14.9305 8 2021-02-26
14:56:11		 Bollettino Sismico Italiano INGV 85465221
Reviewed
Rev200 		ML 1.8 2020-11-30
22:09:51		 37.605 14.907 11 2021-01-28
15:49:54		 Sala Operativa INGV_OE (Catania) 85117911
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-11-30 22:09:51 ± 0.08
Latitude 37.6187 ± 0.0054
Longitude 14.9305 ± 0.0068
Depth (km) 8 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 85465221

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 573
Semi-minor axis of confidence ellipse (meter) 556
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 76
Circular confidence region, given by single value of horizontal uncertainty (meter) 570.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 67
Number of associated phases, regardless of their use for origin computation 33
Number of defining phases 33
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.3
Epicentral distance of station closest to the epicenter (degree) 0.04047
Epicentral distance of station farthest from the epicenter (degree) 0.67629
Number of stations at which the event was observed 25
Number of stations from which data was used for origin computation 25
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.3
Num. used stations 16
Type of magnitude ML
Reference to an origin 85465221
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-01-28 15:49:42

ML:1.8

Field Value
Value 1.8
Uncertainty 0.1
Num. used stations
Type of magnitude ML
Reference to an origin 85117911
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2020-11-30 23:31:54
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.AGST.EHE. 2020-11-30T22:10:07.60 0.6 undecidable manual S 147 47.9187 50 0.1 52
IV.HAGA.HHZ. 2020-11-30T22:10:06.03 0.6 undecidable manual S 152 41.9247 50 0.12 52
IV.HAVL.HHZ. 2020-11-30T22:10:04.63 0.6 undecidable manual P 167 75.0693 50 -0.31 47
IV.HLNI.HHZ. 2020-11-30T22:10:03.14 0.6 undecidable manual S 190 30.4473 105 0.69 46
IV.RAFF.HHZ. 2020-11-30T22:10:03.66 0.3 undecidable manual P 229 66.5778 50 0.01 77
IV.HVZN.HNZ. 2020-11-30T22:10:01.23 0.6 undecidable manual P 201 52.4031 50 -0.23 50
IV.MSFR.HHZ. 2020-11-30T22:10:01.99 0.6 undecidable manual P 327 54.8007 50 0.17 51
IV.SSY.HHZ. 2020-11-30T22:10:01.53 1.0 undecidable manual P 166 52.7028 50 0.04 26
IV.AGST.EHE. 2020-11-30T22:10:00.65 0.3 undecidable manual P 147 47.9187 50 -0.11 78
IV.EPOZ.HHZ. 2020-11-30T22:10:00.50 0.6 undecidable manual S 75 23.4543 109 0.37 51
IV.CAGR.HHE. 2020-11-30T22:10:00.58 0.6 undecidable manual P 271 37.8288 50 1.37 33
IV.MUCR.HHE. 2020-11-30T22:10:00.42 1.0 undecidable manual P 354 47.3193 50 -0.25 25
IV.AIO.HHE. 2020-11-30T22:10:00.38 0.6 undecidable manual P 34 47.2194 50 -0.28 50
IV.HAGA.HHZ. 2020-11-30T22:09:59.59 0.6 undecidable manual P 152 41.9247 50 -0.25 51
IV.GALF.HHZ. 2020-11-30T22:09:59.34 0.6 undecidable manual P 288 33.5442 103 0.88 42
IV.EFIU.HHZ. 2020-11-30T22:09:57.72 0.6 undecidable manual P 52 31.0467 104 -0.25 52
IV.ECTS.HHZ. 2020-11-30T22:09:57.90 0.3 undecidable manual P 30 33.6441 103 -0.58 71
IV.EPOZ.HHZ. 2020-11-30T22:09:57.02 0.3 undecidable manual P 75 23.4543 109 0.52 75
IV.HLNI.HHZ. 2020-11-30T22:09:57.41 0.1 undecidable manual P 190 30.4473 105 -0.44 100
IV.EMSG.HHZ. 2020-11-30T22:09:56.69 0.6 undecidable manual P 4 22.4553 109 0.35 52
IV.ESLN.HHZ. 2020-11-30T22:09:56.15 0.6 undecidable manual S 25 9.1797 131 0.4 52
IV.EPZF.HHZ. 2020-11-30T22:09:56.94 0.3 undecidable manual P 344 23.6541 108 0.38 77
IV.EPIT.HHZ. 2020-11-30T22:09:56.71 0.3 undecidable manual P 27 24.0537 108 0.08 82
IV.EVRN.HHZ. 2020-11-30T22:09:55.58 0.3 undecidable manual P 66 19.6692 112 -0.22 80
IV.ECBD.HHN. 2020-11-30T22:09:55.79 0.3 undecidable manual P 37 22.5552 109 -0.56 74
IV.ECHR.HHZ. 2020-11-30T22:09:55.42 0.3 undecidable manual S 348 7.6812 136 0.04 85
IV.ENIC.HHZ. 2020-11-30T22:09:55.94 0.6 undecidable manual S 80 8.0808 134 0.45 52
IV.EMCN.HHN. 2020-11-30T22:09:55.82 0.6 undecidable manual P 25 21.1677 110 -0.26 53
IV.ESML.HHZ. 2020-11-30T22:09:54.28 0.3 undecidable manual S 269 4.4955 150 -0.43 79
IV.ENIC.HHZ. 2020-11-30T22:09:54.19 0.3 undecidable manual P 80 8.0808 134 0.36 79
IV.ESLN.HHZ. 2020-11-30T22:09:53.86 0.3 undecidable manual P 25 9.1797 131 -0.12 83
IV.ESML.HHZ. 2020-11-30T22:09:53.27 0.3 undecidable manual P 269 4.4955 150 -0.1 84
IV.ECHR.HHZ. 2020-11-30T22:09:53.44 0.3 undecidable manual P 348 7.6812 136 -0.32 80
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ESLN.HHE. ML:1.9 0.0012914749999999998 0.7808 AML other m 2020-11-30T22:09:55.34
IV.ENIC.HHN. ML:1.7 0.0007712756000000001 0.7424 AML other m 2020-11-30T22:09:55.19
IV.ENIC.HNN. ML:1.7 0.0008317687499999999 0.7808 AML other m 2020-11-30T22:09:55.67
IV.ESLN.HHN. ML:2.2 0.00229 0.52 AML other m 2020-11-30T22:09:56.58
IV.EVRN.HNN. ML:2.0 0.0007192776 0.6016 AML other m 2020-11-30T22:09:59.38
IV.EVRN.HHE. ML:1.8 0.00059350405 2.624 AML other m 2020-11-30T22:09:58.36
IV.EPOZ.HHE. ML:1.5 0.00022515465 0.7424 AML other m 2020-11-30T22:10:00.99
IV.EPOZ.HHN. ML:1.6 0.00024461095 0.4992 AML other m 2020-11-30T22:10:01.10
IV.HLNI.HHE. ML:1.2 0.000082672225 1.9584 AML other m 2020-11-30T22:10:02.57
IV.HLNI.HHN. ML:1.3 0.000098185265 3.456 AML other m 2020-11-30T22:10:01.25
IV.EPZF.HHN. ML:2.1 0.0008874999999999999 0.48 AML other m 2020-11-30T22:10:03.39
IV.EPZF.HHE. ML:2.0 0.0007135 1.62 AML other m 2020-11-30T22:10:04.03
IV.HAGA.HHN. ML:1.5 0.00010965895000000001 1.216 AML other m 2020-11-30T22:10:05.31
IV.HAGA.HHE. ML:1.6 0.000126618 0.96 AML other m 2020-11-30T22:10:06.13
IV.HAVL.HHN. ML:2.1 0.00017659189999999999 1.1392 AML other m 2020-11-30T22:10:15.66
IV.HAVL.HHE. ML:2.0 0.00013670470000000002 2.1632 AML other m 2020-11-30T22:10:16.44
TDMT - Time Domain Moment Tensor
Fault Plane solutions in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download