Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.7 on date 17-06-2021 and time 19:55:17 (UTC) in region 1 km SW Tremestieri Etneo (CT)

A magnitude ML 1.7 earthquake occured in region: 1 km SW Tremestieri Etneo (CT), on

  • 17-06-2021 19:55:17 (UTC)
  • 17-06-2021 21:55:17 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.5710, 15.0670 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
Tremestieri Etneo CT 1 20589 20589
Gravina di Catania CT 1 25838 46427
Mascalucia CT 1 31958 78385
Sant'Agata li Battiati CT 2 9479 87864
San Giovanni la Punta CT 3 23060 110924
San Pietro Clarenza CT 4 7743 118667
San Gregorio di Catania CT 4 11966 130633
Aci Bonaccorsi CT 5 3524 134157
Viagrande CT 5 8563 142720
Camporotondo Etneo CT 5 5023 147743
Trecastagni CT 5 10910 158653
Pedara CT 5 14102 172755
Valverde CT 5 7840 180595
Nicolosi CT 6 7463 188058
Aci Sant'Antonio CT 7 17984 206042
Aci Castello CT 7 18723 224765
Misterbianco CT 8 49410 274175
Aci Catena CT 8 29851 304026
Catania CT 8 314555 618581
Belpasso CT 8 28108 646689
Acireale CT 10 52622 699311
Motta Sant'Anastasia CT 11 12116 711427
Ragalna CT 13 3924 715351
Zafferana Etnea CT 14 9517 724868
Paternò CT 14 48228 773096
Santa Venerina CT 15 8592 781688
Santa Maria di Licodia CT 17 7641 789329
Milo CT 18 1087 790416
Biancavilla CT 19 24007 814423

Municipalities with at least 50000 inhabitants

An earthquake occurred to
8 Km N of Catania (314555 inhabitants)
10 Km SW of Acireale (52622 inhabitants)
60 Km NW of Siracusa (122291 inhabitants)
78 Km NE of Ragusa (73313 inhabitants)
79 Km SW of Reggio di Calabria (183035 inhabitants)
82 Km SW of Messina (238439 inhabitants)
83 Km NE of Vittoria (63339 inhabitants)
84 Km NE of Modica (54633 inhabitants)
89 Km E of Caltanissetta (63360 inhabitants)
91 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 1.7 2021-06-17
19:55:17		 37.5713 15.0668 8 2021-12-29
11:12:07		 Bollettino Sismico Italiano INGV 91875121
Reviewed
Rev200 		ML 1.4 2021-06-17
19:55:18		 37.632 15.044 7 2021-10-26
13:27:22		 Sala Operativa INGV_OE (Catania) 91468191
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-06-17 19:55:17 ± 0.08
Latitude 37.5713 ± 0.0036
Longitude 15.0668 ± 0.0079
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 91875121

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 592
Semi-minor axis of confidence ellipse (meter) 490
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 290
Circular confidence region, given by single value of horizontal uncertainty (meter) 590.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 122
Number of associated phases, regardless of their use for origin computation 41
Number of defining phases 41
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.28
Epicentral distance of station closest to the epicenter (degree) 0.07015
Epicentral distance of station farthest from the epicenter (degree) 0.80759
Number of stations at which the event was observed 30
Number of stations from which data was used for origin computation 30
Magnitudes information

ML:1.7

Field Value
Value 1.7
Uncertainty 0.3
Num. used stations 34
Type of magnitude ML
Reference to an origin 91875121
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-10-26 13:27:10

ML:1.4

Field Value
Value 1.4
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 91468191
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2021-06-17 20:03:04
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.IVPL.HHZ. 2021-06-17T19:55:33.98 1.0 undecidable manual P 355 89.6436 50 0.54 20
IV.HMDC.HHZ. 2021-06-17T19:55:30.82 0.3 undecidable manual P 200 72.372 50 0.04 68
IV.MSFR.HHZ. 2021-06-17T19:55:30.29 0.3 undecidable manual P 321 66.0894 50 0.48 63
IV.RAFF.HHZ. 2021-06-17T19:55:30.88 0.3 undecidable manual P 238 73.1712 50 -0.01 68
IV.HAVL.HHZ. 2021-06-17T19:55:29.87 0.3 undecidable manual P 176 68.0763 50 -0.24 66
IV.HLNI.HHZ. 2021-06-17T19:55:28.48 0.3 undecidable manual S 215 30.0477 104 -0.04 73
IV.EMSG.HHZ. 2021-06-17T19:55:28.21 0.6 undecidable manual S 340 29.5482 104 -0.11 48
IV.GALF.HHZ. 2021-06-17T19:55:27.47 0.3 undecidable manual P 290 46.62 50 0.67 60
IV.EMCN.HHN. 2021-06-17T19:55:26.32 1.0 undecidable manual S 353 24.5532 107 -0.35 23
IV.SSY.HHZ. 2021-06-17T19:55:26.63 0.1 undecidable manual P 179 45.9207 50 -0.06 95
IV.AIO.HHE. 2021-06-17T19:55:26.59 0.3 undecidable manual P 18 46.7199 50 -0.22 69
IV.EPIT.HHZ. 2021-06-17T19:55:26.61 0.6 undecidable manual S 358 26.6511 106 -0.75 40
IV.ECBD.HHN. 2021-06-17T19:55:25.93 0.6 undecidable manual S 4 23.2545 108 -0.3 47
IV.EMFS.HHE. 2021-06-17T19:55:24.23 0.6 undecidable manual S 340 17.5713 113 -0.15 49
IV.EPZF.HHZ. 2021-06-17T19:55:24.51 0.3 undecidable manual P 327 33.5442 103 -0.13 72
IV.EMFO.HHE. 2021-06-17T19:55:24.23 0.6 undecidable manual S 6 18.3705 112 -0.41 46
IV.HAGA.HHZ. 2021-06-17T19:55:24.36 0.3 undecidable manual P 166 32.745 103 -0.11 72
IV.ESCV.HHZ. 2021-06-17T19:55:24.00 0.1 undecidable manual P 311 29.4483 104 0.16 96
IV.HCRL.HHZ. 2021-06-17T19:55:24.18 0.1 undecidable manual P 185 32.1456 103 -0.18 95
IV.ESPC.HHN. 2021-06-17T19:55:23.23 0.3 undecidable manual S 346 13.875 119 -0.01 76
IV.EFIU.HHZ. 2021-06-17T19:55:23.68 0.6 undecidable manual P 27 27.2505 105 0.26 47
IV.EMSG.HHZ. 2021-06-17T19:55:23.58 0.1 undecidable manual P 340 29.5482 104 -0.28 93
IV.ESLN.HHZ. 2021-06-17T19:55:23.71 0.6 undecidable manual S 329 15.7731 116 -0.11 49
IV.HLNI.HHZ. 2021-06-17T19:55:23.64 0.1 undecidable manual P 215 30.0477 104 -0.32 92
IV.ESAL.HHE. 2021-06-17T19:55:23.06 0.3 undecidable manual P 16 21.2676 110 0.8 60
IV.EPIT.HHZ. 2021-06-17T19:55:23.12 0.1 undecidable manual P 358 26.6511 106 -0.18 96
IV.EMPL.HHZ. 2021-06-17T19:55:23.44 0.6 undecidable manual S 325 14.6742 117 -0.03 50
IV.EMNR.HHZ. 2021-06-17T19:55:23.11 0.3 undecidable manual P 352 27.4503 105 -0.35 69
IV.ECBD.HHN. 2021-06-17T19:55:22.44 0.1 undecidable manual P 4 23.2545 108 -0.21 96
IV.ESVO.HHE. 2021-06-17T19:55:22.65 0.3 undecidable manual P 335 24.753 107 -0.28 70
IV.EMCN.HHN. 2021-06-17T19:55:22.57 0.3 undecidable manual P 353 24.5532 107 -0.33 70
IV.ECZM.HHN. 2021-06-17T19:55:22.51 0.3 undecidable manual P 321 22.755 108 -0.05 74
IV.EPOZ.HHZ. 2021-06-17T19:55:22.15 0.1 undecidable manual P 44 15.4734 116 0.95 75
IV.ENIC.HHZ. 2021-06-17T19:55:22.04 0.3 undecidable manual S 329 7.7811 134 0.53 68
IV.ESML.HHZ. 2021-06-17T19:55:21.63 0.1 undecidable manual P 288 17.2716 114 0.1 99
IV.EMPL.HHZ. 2021-06-17T19:55:21.22 0.1 undecidable manual P 325 14.6742 117 0.17 98
IV.EMFS.HHE. 2021-06-17T19:55:21.54 0.1 undecidable manual P 340 17.5713 113 -0.03 100
IV.EMFO.HHE. 2021-06-17T19:55:21.60 0.3 undecidable manual P 6 18.3705 112 -0.12 74
IV.ESLN.HHZ. 2021-06-17T19:55:21.52 0.1 undecidable manual P 329 15.7731 116 0.27 96
IV.ENIC.HHZ. 2021-06-17T19:55:20.24 0.1 undecidable manual P 329 7.7811 134 0.32 96
IV.ESPC.HHN. 2021-06-17T19:55:20.85 0.1 undecidable manual P 346 13.875 119 -0.06 100
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ENIC.HHE. ML:2.5 0.005730000000000001 0.9 AML other m 2021-06-17T19:55:23.90
IV.ENIC.HNE. ML:2.6 0.006795 0.62 AML other m 2021-06-17T19:55:23.52
IV.ENIC.HHN. ML:2.5 0.0059900000000000005 1.22 AML other m 2021-06-17T19:55:23.90
IV.ENIC.HNN. ML:2.5 0.005585 0.26 AML other m 2021-06-17T19:55:24.16
IV.EMPL.HHN. ML:2.5 0.0033799999999999998 1.14 AML other m 2021-06-17T19:55:24.71
IV.ESML.HHE. ML:1.7 0.00041049999999999995 0.48 AML other m 2021-06-17T19:55:25.32
IV.ESML.HHN. ML:1.7 0.000516 0.54 AML other m 2021-06-17T19:55:25.32
IV.ESML.HNN. ML:1.7 0.0004605 0.56 AML other m 2021-06-17T19:55:25.32
IV.ESML.HNE. ML:1.6 0.00037 0.94 AML other m 2021-06-17T19:55:27.90
IV.EMPL.HHE. ML:2.4 0.00246 0.74 AML other m 2021-06-17T19:55:28.62
IV.HLNI.HHN. ML:1.6 0.000174 1.82 AML other m 2021-06-17T19:55:29.91
IV.HLNI.HHE. ML:1.5 0.00014700000000000002 0.56 AML other m 2021-06-17T19:55:29.63
IV.HAGA.HHN. ML:1.5 0.0001385 0.88 AML other m 2021-06-17T19:55:30.72
IV.HCRL.HHN. ML:1.5 0.000142 1.02 AML other m 2021-06-17T19:55:30.26
IV.EFIU.HHE. ML:1.5 0.000184 1.52 AML other m 2021-06-17T19:55:30.06
IV.EPIT.HHE. ML:1.9 0.00042800000000000005 0.6 AML other m 2021-06-17T19:55:30.88
IV.HAGA.HHE. ML:1.2 0.0000729 1.08 AML other m 2021-06-17T19:55:31.59
IV.HAVL.HHN. ML:1.8 0.00011999999999999999 1.06 AML other m 2021-06-17T19:55:31.87
IV.EPIT.HHN. ML:2.0 0.000553 0.32 AML other m 2021-06-17T19:55:32.72
IV.EPZF.HHE. ML:1.6 0.000163 1.1 AML other m 2021-06-17T19:55:32.44
IV.EPZF.HHN. ML:1.6 0.00018099999999999998 1.56 AML other m 2021-06-17T19:55:33.11
IV.EFIU.HHN. ML:1.7 0.0002485 0.62 AML other m 2021-06-17T19:55:34.48
IV.HCRL.HHE. ML:1.4 0.00010505 1.22 AML other m 2021-06-17T19:55:34.89
IV.ESCV.HHN. ML:1.7 0.00023050000000000002 0.26 AML other m 2021-06-17T19:55:35.65
IV.SSY.HHN. ML:2.3 0.0006495 0.24 AML other m 2021-06-17T19:55:36.66
IV.SSY.HHE. ML:2.0 0.00027 1.04 AML other m 2021-06-17T19:55:37.32
IV.ESCV.HHE. ML:1.6 0.0002195 0.88 AML other m 2021-06-17T19:55:38.36
IV.GALF.HHE. ML:1.5 0.0001005 1.64 AML other m 2021-06-17T19:55:39.12
IV.ACATE.EHN. ML:1.9 0.00010805000000000001 0.74 AML other m 2021-06-17T19:55:41.45
IV.HAVL.HHE. ML:1.8 0.00009834999999999999 0.7 AML other m 2021-06-17T19:55:42.00
IV.HMDC.HHE. ML:1.6 0.00006895 1.24 AML other m 2021-06-17T19:55:42.26
IV.HMDC.HHN. ML:1.8 0.00010899999999999999 1.48 AML other m 2021-06-17T19:55:43.16
IV.GALF.HHN. ML:1.6 0.0001275 0.52 AML other m 2021-06-17T19:55:48.61
IV.ACATE.EHE. ML:1.7 0.00007575000000000001 0.62 AML other m 2021-06-17T19:55:55.84
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