Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.1 on date 28-08-2020 and time 02:55:33 (Italy) in region Costa Catanese (Catania)

A magnitude ML 2.1 earthquake occured in region: Costa Catanese (Catania), on

  • 28-08-2020 00:55:33 (UTC)
  • 28-08-2020 02:55:33 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.63, 15.25 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
Acireale CT 7 52622 52622
Aci Catena CT 10 29851 82473
Aci Sant'Antonio CT 11 17984 100457
Santa Venerina CT 11 8592 109049
Riposto CT 12 14838 123887
Giarre CT 12 27659 151546
Valverde CT 12 7840 159386
Aci Castello CT 12 18723 178109
Aci Bonaccorsi CT 13 3524 181633
Viagrande CT 13 8563 190196
San Gregorio di Catania CT 14 11966 202162
Zafferana Etnea CT 14 9517 211679
Mascali CT 15 14282 225961
San Giovanni la Punta CT 15 23060 249021
Trecastagni CT 15 10910 259931
Milo CT 15 1087 261018
Sant'Alfio CT 15 1582 262600
Pedara CT 17 14102 276702
Tremestieri Etneo CT 17 20589 297291
Sant'Agata li Battiati CT 17 9479 306770
Fiumefreddo di Sicilia CT 18 9623 316393
Gravina di Catania CT 18 25838 342231
Mascalucia CT 18 31958 374189
Nicolosi CT 19 7463 381652

Municipalities with at least 50000 inhabitants

An earthquake occurred to
7 Km E of Acireale (52622 inhabitants)
20 Km NE of Catania (314555 inhabitants)
63 Km SW of Reggio di Calabria (183035 inhabitants)
64 Km N of Siracusa (122291 inhabitants)
68 Km SW of Messina (238439 inhabitants)
91 Km NE of Ragusa (73313 inhabitants)
96 Km NE of Modica (54633 inhabitants)
99 Km NE of Vittoria (63339 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 2.1 2020-08-28
00:55:33		 37.63 15.25 8 2020-11-19
12:37:04		 Bollettino Sismico Italiano INGV 83880951
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-08-28 00:55:33 ± 0.32
Latitude 37.63 ± 0.01
Longitude 15.25 ± 0.02
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 83880951

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 1805
Semi-minor axis of confidence ellipse (meter) 597
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 304
Circular confidence region, given by single value of horizontal uncertainty (meter) 1800
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 228
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) 0.38
Epicentral distance of station closest to the epicenter (degree) 0.05936
Epicentral distance of station farthest from the epicenter (degree) 0.50362
Number of stations at which the event was observed 16
Number of stations from which data was used for origin computation 16
Magnitude information

ML:2.1

Field Value
Value 2.1
Uncertainty 0.3
Num. used stations 13
Type of magnitude ML
Reference to an origin 83880951
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-10-18 09:45:27
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance Takeoff_angle Residual Weight
IV.HLNI.HHZ. 2020-08-28T00:55:48.87 0.6 undecidable manual S 226 0.4119 50 0.05 48
IV.NOV.HHZ. 2020-08-28T00:55:48.79 0.6 undecidable manual S 348 0.4029 50 0.24 47
IV.EPZF.HHZ. 2020-08-28T00:55:47.33 0.6 undecidable manual S 302 0.3615 50 0 47
IV.AIO.HHE. 2020-08-28T00:55:46.90 0.6 undecidable manual S 358 0.3372 50 0.3 46
IV.ESML.HHE. 2020-08-28T00:55:44.26 0.6 undecidable manual S 267 0.2914 103 -0.62 42
IV.ECTS.HHZ. 2020-08-28T00:55:44.15 0.6 undecidable manual S 338 0.2671 104 0.17 48
IV.MUCR.HHE. 2020-08-28T00:55:43.89 0.6 undecidable manual P 324 0.5036 50 0.03 47
IV.NOV.HHZ. 2020-08-28T00:55:41.99 0.1 undecidable manual P 348 0.4029 50 -0.14 94
IV.AIO.HHE. 2020-08-28T00:55:41.58 0.1 undecidable manual P 358 0.3372 50 0.57 85
IV.HLNI.HHZ. 2020-08-28T00:55:41.97 0.6 undecidable manual P 226 0.4119 50 -0.32 45
IV.ENIC.HHN. 2020-08-28T00:55:41.15 0.6 undecidable manual S 269 0.1781 111 0.44 46
IV.ESML.HHE. 2020-08-28T00:55:40.91 0.1 undecidable manual P 267 0.2914 103 0.89 76
IV.EPZF.HHZ. 2020-08-28T00:55:40.79 0.1 undecidable manual P 302 0.3615 50 -0.64 81
IV.ECHR.HHE. 2020-08-28T00:55:39.56 0.1 undecidable manual P 281 0.2689 104 0.02 99
IV.ECTS.HHZ. 2020-08-28T00:55:39.11 0.1 undecidable manual P 338 0.2671 104 -0.38 93
IV.ESLN.HHZ. 2020-08-28T00:55:39.17 0.1 undecidable manual P 285 0.223 107 0.61 87
IV.EMSG.HHN. 2020-08-28T00:55:39.99 1.0 undecidable manual P 309 0.2995 103 -0.22 24
IV.ENIC.HHN. 2020-08-28T00:55:38.23 1.0 undecidable manual P 269 0.1781 111 0.62 22
IV.EPIT.HHN. 2020-08-28T00:55:38.70 0.1 undecidable manual P 320 0.232 106 -0.05 100
IV.ECBD.HHN. 2020-08-28T00:55:38.46 0.1 undecidable manual P 319 0.1934 109 0.54 89
IV.EFIU.HHE. 2020-08-28T00:55:37.00 0.1 undecidable manual P 350 0.1583 113 -0.19 99
IV.EVRN.HHN. 2020-08-28T00:55:37.64 0.6 undecidable manual S 302 0.1034 123 -0.5 47
IV.EPOZ.HHZ. 2020-08-28T00:55:36.63 0.6 undecidable manual S 309 0.0594 139 -0.22 51
IV.EPOZ.HHZ. 2020-08-28T00:55:35.03 0.1 positive manual P 309 0.0594 139 -0.35 98
IV.EVRN.HHN. 2020-08-28T00:55:35.31 0.3 undecidable manual P 302 0.1034 123 -0.81 62
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.EPOZ.HNE. ML:2.2 0.002915 0.3 AML other m 2020-08-28T00:55:37.13
IV.EPOZ.HHE. ML:2.2 0.003325 0.36 AML other m 2020-08-28T00:55:37.10
IV.EPOZ.HHN. ML:2.2 0.003395 0.78 AML other m 2020-08-28T00:55:37.74
IV.EPOZ.HNN. ML:2.1 0.002585 0.78 AML other m 2020-08-28T00:55:37.35
IV.EVRN.HNE. ML:2.1 0.00176 0.34 AML other m 2020-08-28T00:55:37.81
IV.EVRN.HHE. ML:2.2 0.001895 1.64 AML other m 2020-08-28T00:55:37.83
IV.EVRN.HHN. ML:2.3 0.00266 0.68 AML other m 2020-08-28T00:55:38.71
IV.EVRN.HNN. ML:2.3 0.00282 0.68 AML other m 2020-08-28T00:55:38.71
IV.ENIC.HHE. ML:0 0.000667 0.34 AML other m 2020-08-28T00:55:44.60
IV.ENIC.HHN. ML:2 0.000879 0.34 AML other m 2020-08-28T00:55:44.59
IV.ENIC.HNN. ML:1.8 0.0005876063 1.05 AML other m 2020-08-28T00:55:41.85
IV.HLNI.HHN. ML:1.1 3.4831825E-5 1.6 AML other m 2020-08-28T00:55:50.65
IV.HLNI.HHE. ML:0.8 2.2408195E-5 0.22 AML other m 2020-08-28T00:55:49.54
TDMT - Time Domain Moment Tensor
Focal Mechanism in the area
Download
Type Description Link
QuakeML - small Event, Origin, FocalMechanism Download
QuakeML - full Event, Origin, FocalMechanism, Amplitude, Arrival, Pick, Station Magnitude Download