Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 2.0 on date 17-09-2020 and time 19:37:56 (Italy) in region 3 km S Zafferana Etnea (CT)

A magnitude ML 2.0 earthquake occured in region: 3 km S Zafferana Etnea (CT), on

  • 17-09-2020 17:37:56 (UTC)
  • 17-09-2020 19:37:56 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.6720, 15.1030 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
Zafferana Etnea CT 3 9517 9517
Santa Venerina CT 4 8592 18109
Milo CT 6 1087 19196
Trecastagni CT 6 10910 30106
Viagrande CT 7 8563 38669
Pedara CT 7 14102 52771
Aci Sant'Antonio CT 8 17984 70755
Aci Bonaccorsi CT 8 3524 74279
Aci Catena CT 8 29851 104130
Acireale CT 9 52622 156752
Sant'Alfio CT 9 1582 158334
Nicolosi CT 9 7463 165797
Giarre CT 10 27659 193456
San Giovanni la Punta CT 10 23060 216516
Valverde CT 10 7840 224356
Tremestieri Etneo CT 11 20589 244945
Riposto CT 11 14838 259783
Mascalucia CT 12 31958 291741
San Gregorio di Catania CT 12 11966 303707
Sant'Agata li Battiati CT 13 9479 313186
Mascali CT 13 14282 327468
Gravina di Catania CT 13 25838 353306
San Pietro Clarenza CT 13 7743 361049
Aci Castello CT 13 18723 379772
Belpasso CT 14 28108 407880
Camporotondo Etneo CT 14 5023 412903
Ragalna CT 15 3924 416827
Fiumefreddo di Sicilia CT 17 9623 426450
Piedimonte Etneo CT 17 3963 430413
Catania CT 19 314555 744968
Misterbianco CT 19 49410 794378
Linguaglossa CT 19 5403 799781
Santa Maria di Licodia CT 20 7641 807422

Municipalities with at least 50000 inhabitants

An earthquake occurred to
9 Km NW of Acireale (52622 inhabitants)
19 Km N of Catania (314555 inhabitants)
68 Km SW of Reggio di Calabria (183035 inhabitants)
70 Km N of Siracusa (122291 inhabitants)
71 Km SW of Messina (238439 inhabitants)
89 Km NE of Ragusa (73313 inhabitants)
94 Km E of Caltanissetta (63360 inhabitants)
95 Km NE of Vittoria (63339 inhabitants)
95 Km NE 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 2020-09-17
17:37:56		 37.6718 15.1032 9 2021-02-26
14:56:00		 Bollettino Sismico Italiano INGV 84055871
Reviewed
Rev200 		ML 1.7 2020-09-17
17:37:56		 37.695 15.091 5 2020-12-10
15:23:23		 Sala Operativa INGV_OE (Catania) 82988731
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2020-09-17 17:37:56 ± 0.12
Latitude 37.6718 ± 0.0063
Longitude 15.1032 ± 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 84055871

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 804
Semi-minor axis of confidence ellipse (meter) 483
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 308
Circular confidence region, given by single value of horizontal uncertainty (meter) 800.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 84
Number of associated phases, regardless of their use for origin computation 32
Number of defining phases 32
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.4
Epicentral distance of station closest to the epicenter (degree) 0.03058
Epicentral distance of station farthest from the epicenter (degree) 0.51351
Number of stations at which the event was observed 21
Number of stations from which data was used for origin computation 21
Magnitudes information

ML:2.0

Field Value
Value 2.0
Uncertainty 0.3
Num. used stations 20
Type of magnitude ML
Reference to an origin 84055871
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2020-12-10 15:23:10

ML:1.7

Field Value
Value 1.7
Uncertainty
Num. used stations
Type of magnitude ML
Reference to an origin 82988731
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2020-09-17 17:49:01
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.HLNI.HHE. 2020-09-17T17:38:11.09 0.3 undecidable manual S 210 41.2254 50 0.47 65
IV.AIO.HHE. 2020-09-17T17:38:08.84 0.6 undecidable manual S 19 35.1426 50 -0.14 47
IV.MPNC.HHN. 2020-09-17T17:38:07.64 0.3 undecidable manual P 22 56.9985 50 0.52 62
IV.ECTS.HHZ. 2020-09-17T17:38:06.59 0.6 undecidable manual S 4 23.3544 110 1.37 30
IV.MUCR.HHE. 2020-09-17T17:38:05.33 0.6 undecidable manual P 334 45.8208 50 -0.06 47
IV.NOV.HHZ. 2020-09-17T17:38:04.34 0.3 undecidable manual P 4 39.627 50 -0.09 71
IV.HLNI.HHE. 2020-09-17T17:38:04.52 0.1 undecidable manual P 210 41.2254 50 -0.17 93
IV.HAGA.HHZ. 2020-09-17T17:38:04.92 0.3 undecidable manual P 174 43.1235 50 -0.06 71
IV.AIO.HHE. 2020-09-17T17:38:03.32 0.3 undecidable manual P 19 35.1426 50 -0.42 67
IV.EFIU.HHE. 2020-09-17T17:38:03.79 0.6 undecidable manual S 36 16.0728 118 0.88 39
IV.ECBD.HHN. 2020-09-17T17:38:02.42 0.3 undecidable manual S 353 12.0768 125 0.7 63
IV.EPZF.HHZ. 2020-09-17T17:38:02.79 0.3 undecidable manual P 308 27.4503 107 0.45 67
IV.ESML.HHZ. 2020-09-17T17:38:01.39 0.3 undecidable manual P 253 20.5683 113 0.35 70
IV.ENIC.HHZ. 2020-09-17T17:38:01.16 0.3 undecidable manual S 238 8.4804 135 0.4 70
IV.EMSG.HHZ. 2020-09-17T17:38:01.27 0.3 undecidable manual P 321 21.2676 112 0.09 73
IV.EMCN.HHZ. 2020-09-17T17:38:01.96 0.6 undecidable manual S 335 14.5743 120 -0.49 45
IV.EPOZ.HHZ. 2020-09-17T17:38:01.64 0.3 undecidable manual S 90 7.4814 139 1.12 53
IV.ECPN.HHZ. 2020-09-17T17:38:01.99 0.6 undecidable manual S 308 12.9759 123 0.01 50
IV.ECTS.HHZ. 2020-09-17T17:38:01.43 0.3 undecidable manual P 4 23.3544 110 -0.14 72
IV.ESLN.HHZ. 2020-09-17T17:38:01.34 0.6 undecidable manual S 282 11.5773 126 -0.23 48
IV.EPIT.HHN. 2020-09-17T17:38:00.24 0.3 undecidable manual P 345 15.9729 118 0.02 75
IV.ECNE.HHN. 2020-09-17T17:38:00.59 0.3 undecidable manual P 319 13.6752 122 0.78 61
IV.ECHR.HHE. 2020-09-17T17:38:00.37 0.1 undecidable manual P 276 16.7721 117 0.01 100
IV.EVRN.HHZ. 2020-09-17T17:37:59.05 0.6 undecidable manual S 56 3.3966 158 -0.73 42
IV.ECPN.HHZ. 2020-09-17T17:37:59.32 0.3 undecidable manual P 308 12.9759 123 -0.38 70
IV.ESLN.HHZ. 2020-09-17T17:37:59.04 0.1 undecidable manual P 282 11.5773 126 -0.43 93
IV.ECBD.HHN. 2020-09-17T17:37:59.22 0.1 undecidable manual P 353 12.0768 125 -0.33 94
IV.EFIU.HHE. 2020-09-17T17:37:59.98 0.1 undecidable manual P 36 16.0728 118 -0.25 95
IV.ENIC.HHZ. 2020-09-17T17:37:59.09 0.1 undecidable manual P 238 8.4804 135 0.1 100
IV.EMCN.HHZ. 2020-09-17T17:37:59.53 0.1 undecidable manual P 335 14.5743 120 -0.44 92
IV.EPOZ.HHZ. 2020-09-17T17:37:58.62 0.1 undecidable manual P 90 7.4814 139 -0.24 97
IV.EVRN.HHZ. 2020-09-17T17:37:57.63 0.1 undecidable manual P 56 3.3966 158 -0.8 82
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ESLN.HHE. ML:1.9 0.001113264 0.5376 AML other m 2020-09-17T17:38:01.56
IV.EPOZ.HHN. ML:2.7 0.008692700999999999 0.2304 AML other m 2020-09-17T17:38:02.06
IV.EPOZ.HNN. ML:2.3 0.003143955 0.256 AML other m 2020-09-17T17:38:02.07
IV.EPOZ.HNE. ML:2.2 0.002935209 0.704 AML other m 2020-09-17T17:38:02.43
IV.EPOZ.HHE. ML:2.7 0.007582758500000001 0.704 AML other m 2020-09-17T17:38:02.43
IV.ESLN.HHN. ML:1.8 0.0008645064 1.0624 AML other m 2020-09-17T17:38:03.83
IV.ENIC.HNE. ML:2.0 0.0017322155000000002 0.3584 AML other m 2020-09-17T17:38:04.51
IV.EMCN.HNN. ML:2.1 0.0014131865 0.5376 AML other m 2020-09-17T17:38:04.47
IV.EMCN.HHN. ML:2.1 0.0014408350000000001 0.5376 AML other m 2020-09-17T17:38:04.48
IV.ENIC.HHE. ML:2.0 0.0014976695 0.1408 AML other m 2020-09-17T17:38:05.06
IV.EMSG.HHN. ML:1.9 0.00058621835 0.6912 AML other m 2020-09-17T17:38:05.42
IV.ENIC.HHN. ML:2.0 0.001511974 0.128 AML other m 2020-09-17T17:38:05.45
IV.ENIC.HNN. ML:2.0 0.001683149 0.1408 AML other m 2020-09-17T17:38:05.39
IV.EMCN.HHE. ML:2.2 0.0015118365 0.32 AML other m 2020-09-17T17:38:08.63
IV.EMCN.HNE. ML:2.2 0.001503575 0.3328 AML other m 2020-09-17T17:38:08.63
IV.EMSG.HHE. ML:2.0 0.00066580755 0.512 AML other m 2020-09-17T17:38:11.23
IV.ESML.HHN. ML:1.6 0.00031317635 1.6384 AML other m 2020-09-17T17:38:10.92
IV.ESML.HHE. ML:1.6 0.0003252666 0.9216 AML other m 2020-09-17T17:38:12.08
IV.EPZF.HHE. ML:1.7 0.00027805215 0.4736 AML other m 2020-09-17T17:38:16.27
IV.EPZF.HHN. ML:1.7 0.00028359389999999993 1.3184 AML other m 2020-09-17T17:38:19.25
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