Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 04-10-2020 and time 13:35:55 (Italy) in region 11 km N Ragalna (CT)

A magnitude ML 2.0 earthquake occured in region: 11 km N Ragalna (CT), on

  • 04-10-2020 11:35:55 (UTC)
  • 04-10-2020 13:35:55 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.7290, 14.9490 at 10 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 11 3924 3924
Biancavilla CT 12 24007 27931
Bronte CT 12 19172 47103
Adrano CT 13 36122 83225
Maletto CT 13 3920 87145
Santa Maria di Licodia CT 14 7641 94786
Zafferana Etnea CT 14 9517 104303
Nicolosi CT 14 7463 111766
Milo CT 15 1087 112853
Belpasso CT 15 28108 140961
Pedara CT 16 14102 155063
Randazzo CT 17 10900 165963
Trecastagni CT 17 10910 176873
Paternò CT 17 48228 225101
Sant'Alfio CT 17 1582 226683
Santa Venerina CT 17 8592 235275
Viagrande CT 18 8563 243838
Camporotondo Etneo CT 19 5023 248861
San Pietro Clarenza CT 19 7743 256604
Maniace CT 19 3765 260369
Mascalucia CT 20 31958 292327

Municipalities with at least 50000 inhabitants

An earthquake occurred to
23 Km NW of Acireale (52622 inhabitants)
28 Km NW of Catania (314555 inhabitants)
74 Km SW of Reggio di Calabria (183035 inhabitants)
74 Km SW of Messina (238439 inhabitants)
80 Km NW of Siracusa (122291 inhabitants)
82 Km E of Caltanissetta (63360 inhabitants)
91 Km N of Ragusa (73313 inhabitants)
94 Km NE of Vittoria (63339 inhabitants)
96 Km NE of Gela (75827 inhabitants)
98 Km N of Modica (54633 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 2.0 2020-10-04
11:35:55		 37.7287 14.9492 10 2021-02-26
14:56:15		 Bollettino Sismico Italiano INGV 86260641
Reviewed
Rev200 		ML 1.7 2020-10-04
11:35:54		 37.721 14.954 7 2021-01-19
11:15:55		 Sala Operativa INGV_OE (Catania) 83494671
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-10-04 11:35:55 ± 0.12
Latitude 37.7287 ± 0.0063
Longitude 14.9492 ± 0.0091
Depth (km) 10 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 86260641

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 818
Semi-minor axis of confidence ellipse (meter) 698
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 96
Circular confidence region, given by single value of horizontal uncertainty (meter) 820.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 56
Number of associated phases, regardless of their use for origin computation 25
Number of defining phases 25
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.31
Epicentral distance of station closest to the epicenter (degree) 0.03327
Epicentral distance of station farthest from the epicenter (degree) 0.57916
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:2.0

Field Value
Value 2.0
Uncertainty 0.2
Num. used stations 24
Type of magnitude ML
Reference to an origin 86260641
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-01-19 11:15:46

ML:1.7

Field Value
Value 1.7
Uncertainty 0.1
Num. used stations
Type of magnitude ML
Reference to an origin 83494671
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2020-10-04 11:41:51
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SSY.HHZ. 2020-10-04T11:36:07.58 0.6 undecidable manual P 170 64.2912 50 0.79 38
IV.GALF.HHZ. 2020-10-04T11:36:02.36 0.3 undecidable manual P 267 33.6441 50 0.29 71
IV.MUCR.HHZ. 2020-10-04T11:36:02.17 0.3 undecidable manual P 349 35.4423 50 -0.18 73
IV.AIO.HHZ. 2020-10-04T11:36:02.72 0.6 undecidable manual P 43 36.6411 50 0.19 48
IV.EPZF.HHZ. 2020-10-04T11:36:01.68 0.6 undecidable manual S 323 13.2756 126 0.65 44
IV.EMSG.HHZ. 2020-10-04T11:36:00.52 0.6 undecidable manual S 0 10.1787 134 0.31 49
IV.EFIU.HHZ. 2020-10-04T11:36:00.63 1.0 undecidable manual P 73 23.8539 112 0.16 25
IV.EPOZ.HNZ. 2020-10-04T11:36:00.25 0.3 undecidable manual P 107 21.9669 114 0.14 75
IV.EMCN.HHZ. 2020-10-04T11:36:00.83 0.6 undecidable manual S 47 10.1787 134 0.64 45
IV.ECTS.HHZ. 2020-10-04T11:35:59.71 1.0 undecidable manual P 41 22.6551 113 -0.54 23
IV.ECPN.HHZ. 2020-10-04T11:35:59.69 0.6 undecidable manual S 63 3.6963 159 0.76 43
IV.ENIC.HHZ. 2020-10-04T11:35:59.12 0.6 undecidable manual P 150 12.4764 128 0.64 45
IV.ECHR.HNZ. 2020-10-04T11:35:59.84 0.6 undecidable manual S 214 5.6943 150 0.61 46
IV.EPZF.HHZ. 2020-10-04T11:35:58.18 0.1 undecidable manual P 323 13.2756 126 -0.43 95
IV.ESML.HHZ. 2020-10-04T11:35:58.60 0.3 undecidable manual P 207 13.6752 126 -0.08 77
IV.ESLN.HHZ. 2020-10-04T11:35:58.64 0.6 undecidable manual S 151 4.4955 155 -0.4 49
IV.EVRN.HHZ. 2020-10-04T11:35:58.73 0.6 undecidable manual P 105 16.9719 120 -0.49 47
IV.ECBD.HHZ. 2020-10-04T11:35:58.33 0.6 undecidable manual P 65 13.2756 126 -0.28 49
IV.EPIT.HHZ. 2020-10-04T11:35:58.56 0.6 undecidable manual P 46 13.1757 127 -0.03 52
IV.ECHR.HNZ. 2020-10-04T11:35:57.18 0.1 undecidable manual P 214 5.6943 150 -0.39 98
IV.ESLN.HHZ. 2020-10-04T11:35:57.15 0.1 undecidable manual P 151 4.4955 155 -0.31 99
IV.EMSG.HHZ. 2020-10-04T11:35:57.90 0.1 positive manual P 0 10.1787 134 -0.24 100
IV.ECPN.HHZ. 2020-10-04T11:35:57.33 0.6 undecidable manual P 63 3.6963 159 -0.07 52
IV.EMCN.HHZ. 2020-10-04T11:35:57.85 0.6 undecidable manual P 47 10.1787 134 -0.27 50
IV.ECNE.HHZ. 2020-10-04T11:35:57.69 0.6 undecidable manual P 49 6.1938 148 0.08 52
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ESLN.HHN. ML:2.3 0.0033058255000000003 0.32 AML other m 2020-10-04T11:35:59.32
IV.ESLN.HHE. ML:2.0 0.0018700725 0.1984 AML other m 2020-10-04T11:36:01.69
IV.EMCN.HHE. ML:2.1 0.0014838632999999999 0.1984 AML other m 2020-10-04T11:36:01.71
IV.EMCN.HNE. ML:2.1 0.0014886476 0.1984 AML other m 2020-10-04T11:36:01.72
IV.EPZF.HHE. ML:1.8 0.00069 0.32 AML other m 2020-10-04T11:36:02.09
IV.EPZF.HHN. ML:2.0 0.000989 0.38 AML other m 2020-10-04T11:36:02.62
IV.EMSG.HHN. ML:2.0 0.001315 0.48 AML other m 2020-10-04T11:36:03.05
IV.EMSG.HHE. ML:2.0 0.001405 0.18 AML other m 2020-10-04T11:36:03.50
IV.ESML.HHE. ML:1.9 0.0009105000000000001 1.76 AML other m 2020-10-04T11:36:03.92
IV.ENIC.HHE. ML:2.0 0.00128 0.66 AML other m 2020-10-04T11:36:04.57
IV.ENIC.HNE. ML:2.1 0.001435 0.64 AML other m 2020-10-04T11:36:04.81
IV.EMCN.HHN. ML:2.2 0.001828551 0.3584 AML other m 2020-10-04T11:36:05.59
IV.EMCN.HNN. ML:2.1 0.0017468565000000004 0.3456 AML other m 2020-10-04T11:36:05.59
IV.ENIC.HHN. ML:2.1 0.001335 0.42 AML other m 2020-10-04T11:36:06.88
IV.ENIC.HNN. ML:2.1 0.0014199999999999998 0.66 AML other m 2020-10-04T11:36:06.70
IV.ESML.HHN. ML:2.0 0.0009774999999999999 0.54 AML other m 2020-10-04T11:36:07.75
IV.ECTS.HHE. ML:1.6 0.00023700000000000001 0.72 AML other m 2020-10-04T11:36:08.55
IV.ECTS.HHN. ML:1.6 0.000265 0.72 AML other m 2020-10-04T11:36:09.33
IV.AIO.HHE. ML:1.4 0.0001022 0.3 AML other m 2020-10-04T11:36:09.81
IV.GALF.HHN. ML:2.2 0.0006145 0.36 AML other m 2020-10-04T11:36:11.75
IV.MUCR.HHN. ML:1.5 0.00012575 0.58 AML other m 2020-10-04T11:36:12.37
IV.GALF.HHE. ML:2.0 0.00044750000000000004 0.42 AML other m 2020-10-04T11:36:12.95
IV.AIO.HHN. ML:1.5 0.00011424999999999999 0.64 AML other m 2020-10-04T11:36:14.09
IV.MUCR.HHE. ML:1.5 0.0001305 1.32 AML other m 2020-10-04T11:36:15.11
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