Istituto Nazionale di Geofisica e Vulcanologia

Earthquake with magnitude of ML 1.8 on date 06-05-2021 and time 14:04:49 (Italy) in region 3 km SW Giarre (CT)

A magnitude ML 1.8 earthquake occured in region: 3 km SW Giarre (CT), on

  • 06-05-2021 12:04:49 (UTC)
  • 06-05-2021 14:04:49 (UTC +02:00) Italian time

and geographic coordinates (lat, lon) 37.7160, 15.1560 at 18 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
Giarre CT 3 27659 27659
Santa Venerina CT 3 8592 36251
Sant'Alfio CT 4 1582 37833
Milo CT 4 1087 38920
Riposto CT 5 14838 53758
Zafferana Etnea CT 5 9517 63275
Mascali CT 6 14282 77557
Fiumefreddo di Sicilia CT 10 9623 87180
Piedimonte Etneo CT 11 3963 91143
Acireale CT 11 52622 143765
Aci Sant'Antonio CT 12 17984 161749
Aci Catena CT 13 29851 191600
Trecastagni CT 13 10910 202510
Viagrande CT 13 8563 211073
Aci Bonaccorsi CT 14 3524 214597
Pedara CT 14 14102 228699
Calatabiano CT 14 5308 234007
Linguaglossa CT 14 5403 239410
Valverde CT 15 7840 247250
Nicolosi CT 16 7463 254713
San Giovanni la Punta CT 16 23060 277773
San Gregorio di Catania CT 17 11966 289739
Tremestieri Etneo CT 17 20589 310328
Gaggi ME 17 3184 313512
Giardini-Naxos ME 18 9415 322927
Aci Castello CT 18 18723 341650
Mascalucia CT 18 31958 373608
Sant'Agata li Battiati CT 19 9479 383087
Castiglione di Sicilia CT 19 3215 386302
Taormina ME 19 10960 397262
Gravina di Catania CT 19 25838 423100
Castelmola ME 19 1088 424188
San Pietro Clarenza CT 20 7743 431931

Municipalities with at least 50000 inhabitants

An earthquake occurred to
11 Km N of Acireale (52622 inhabitants)
24 Km N of Catania (314555 inhabitants)
61 Km SW of Reggio di Calabria (183035 inhabitants)
64 Km SW of Messina (238439 inhabitants)
74 Km N of Siracusa (122291 inhabitants)
96 Km NE of Ragusa (73313 inhabitants)
100 Km E of Caltanissetta (63360 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 2021-05-06
12:04:49		 37.7155 15.1562 18 2021-12-29
11:12:02		 Bollettino Sismico Italiano INGV 90662441
Reviewed
Rev200 		ML 1.5 2021-05-06
12:04:49		 37.681 15.135 15 2021-10-08
10:33:33		 Sala Operativa INGV_OE (Catania) 89831051
Preferred location and magnitude until now.
Origin information

Origin

Field Value
Time (UTC) 2021-05-06 12:04:49 ± 0.08
Latitude 37.7155 ± 0.0027
Longitude 15.1562 ± 0.0057
Depth (km) 18 ± 1 (from location)
Evaluation mode of Origin manual
Evaluation status of Origin reviewed
Version 1000 -> BULLETIN-INGV
Event type earthquake
Origin ID 90662441

Uncertainty

Field Value
Preferred uncertainty description uncertainty ellipse
Semi-major axis of confidence ellipse (meter) 489
Semi-minor axis of confidence ellipse (meter) 78
Azimuth of major axis of confidence ellipse. Measured clockwise from South-North direction at epicenter (gradi) 255
Circular confidence region, given by single value of horizontal uncertainty (meter) 490.0
Confidence level of the uncertainty (%) 68

Quality

Field Value
Largest azimuthal gap in station distribution as seen from epicenter (degree) 120
Number of associated phases, regardless of their use for origin computation 47
Number of defining phases 47
RMS of the travel time residuals of the arrivals used for the origin computation (sec) 0.23
Epicentral distance of station closest to the epicenter (degree) 0.03058
Epicentral distance of station farthest from the epicenter (degree) 0.75633
Number of stations at which the event was observed 28
Number of stations from which data was used for origin computation 28
Magnitudes information

ML:1.8

Field Value
Value 1.8
Uncertainty 0.2
Num. used stations 18
Type of magnitude ML
Reference to an origin 90662441
Agency INGV
Autore Bollettino Sismico Italiano INGV
Time of creation (UTC) 2021-05-31 13:37:22

ML:1.5

Field Value
Value 1.5
Uncertainty 0.2
Num. used stations
Type of magnitude ML
Reference to an origin 89831051
Agency INGV
Autore Sala Operativa INGV_OE (Catania)
Time of creation (UTC) 2021-05-06 12:12:56
Picking and Arrival
SCNL Time Uncertainty Polarity Evaluation_mode Phase Azimuth Distance(km) Takeoff_angle Residual Weight
IV.SSY.HHE. 2021-05-06T12:05:09.37 0.3 undecidable manual S 187 62.2932 98 0.46 64
IV.HCRL.HHE. 2021-05-06T12:05:05.80 0.3 undecidable manual S 193 49.2174 101 0.34 67
IV.HAVL.HHZ. 2021-05-06T12:05:04.02 0.3 undecidable manual P 182 83.9493 96 -0.08 65
IV.SSY.HHE. 2021-05-06T12:05:00.65 0.1 undecidable manual P 187 62.2932 98 -0.14 89
IV.EPZF.HHZ. 2021-05-06T12:05:00.46 0.3 undecidable manual S 295 28.8489 112 0.23 70
IV.GALF.HHZ. 2021-05-06T12:04:59.53 0.3 undecidable manual P 270 51.7038 100 0.35 66
IV.HCRL.HHE. 2021-05-06T12:04:58.73 0.3 undecidable manual P 193 49.2174 101 -0.06 70
IV.HLNI.HHZ. 2021-05-06T12:04:58.50 0.3 undecidable manual P 212 47.8188 101 -0.08 70
IV.MPNC.HHN. 2021-05-06T12:04:58.66 0.1 undecidable manual P 20 50.8158 101 -0.38 88
IV.EMSG.HHE. 2021-05-06T12:04:58.71 0.3 undecidable manual S 303 21.5673 121 0.23 71
IV.ECZM.HHN. 2021-05-06T12:04:58.37 0.3 undecidable manual S 275 22.1556 120 -0.26 70
IV.EMNR.HHZ. 2021-05-06T12:04:57.61 0.3 undecidable manual S 315 15.9729 131 0.33 70
IV.EMPL.HHZ. 2021-05-06T12:04:57.05 0.3 undecidable manual S 256 16.7721 129 -0.39 69
IV.EMCN.HHN. 2021-05-06T12:04:57.14 0.3 undecidable manual S 308 13.6752 136 0.32 71
IV.ECTS.HHZ. 2021-05-06T12:04:57.54 0.3 undecidable manual S 351 18.7701 126 -0.31 71
IV.EPIT.HHN. 2021-05-06T12:04:56.55 0.3 undecidable manual S 321 13.7751 136 -0.29 71
IV.ESLN.HHZ. 2021-05-06T12:04:56.93 0.3 undecidable manual S 261 16.1727 131 -0.38 69
IV.EMFS.HHE. 2021-05-06T12:04:56.71 0.3 undecidable manual S 272 13.875 136 -0.16 73
IV.NOV.HHZ. 2021-05-06T12:04:56.64 0.1 undecidable manual P 357 34.6431 107 0.02 96
IV.EFIU.HHZ. 2021-05-06T12:04:56.39 0.3 undecidable manual S 30 9.4794 148 0.25 72
IV.ECBD.HHN. 2021-05-06T12:04:56.42 0.3 undecidable manual S 320 9.3795 148 0.29 72
IV.EPZF.HHZ. 2021-05-06T12:04:56.21 0.3 undecidable manual P 295 28.8489 112 0.43 67
IV.ESPC.HHN. 2021-05-06T12:04:56.13 0.3 undecidable manual S 257 11.5773 142 -0.33 70
IV.EMSG.HHE. 2021-05-06T12:04:55.13 0.3 undecidable manual P 303 21.5673 121 0.37 69
IV.EVRN.HHN. 2021-05-06T12:04:55.82 0.6 undecidable manual S 212 3.3966 168 0.3 48
IV.AIO.HHZ. 2021-05-06T12:04:55.69 0.3 undecidable manual P 13 29.1486 112 -0.13 72
IV.ECZM.HHN. 2021-05-06T12:04:55.09 0.1 undecidable manual P 275 22.1556 120 0.24 95
IV.EMFO.HHE. 2021-05-06T12:04:55.65 0.3 undecidable manual S 291 6.1938 158 -0.09 75
IV.ESAL.HHZ. 2021-05-06T12:04:55.72 0.6 undecidable manual S 337 4.7952 163 0.11 50
IV.EPOZ.HHZ. 2021-05-06T12:04:55.80 0.3 undecidable manual S 150 5.5944 160 0.12 75
IV.ECTS.HHZ. 2021-05-06T12:04:54.11 0.1 undecidable manual P 351 18.7701 126 -0.29 95
IV.ECHR.HHE. 2021-05-06T12:04:54.81 0.6 undecidable manual P 261 21.5673 121 0.04 50
IV.EMNR.HHZ. 2021-05-06T12:04:54.01 0.1 undecidable manual P 315 15.9729 131 -0.06 99
IV.ESVO.HHE. 2021-05-06T12:04:54.75 0.1 undecidable manual P 289 19.4694 124 0.26 95
IV.ECNE.HHN. 2021-05-06T12:04:54.32 0.1 undecidable manual P 292 14.5743 134 0.41 93
IV.EFIU.HHZ. 2021-05-06T12:04:53.20 0.3 undecidable manual P 30 9.4794 148 -0.22 73
IV.ECBD.HHN. 2021-05-06T12:04:53.33 0.1 undecidable manual P 320 9.3795 148 -0.08 100
IV.EMCN.HHN. 2021-05-06T12:04:53.90 0.1 undecidable manual P 308 13.6752 136 0.09 99
IV.EPOZ.HHZ. 2021-05-06T12:04:53.44 0.3 negative manual P 150 5.5944 160 0.29 72
IV.ESPC.HHN. 2021-05-06T12:04:53.37 0.1 undecidable manual P 257 11.5773 142 -0.23 96
IV.EPIT.HHN. 2021-05-06T12:04:53.97 0.3 undecidable manual P 321 13.7751 136 0.15 73
IV.ESLN.HHZ. 2021-05-06T12:04:53.76 0.3 undecidable manual P 261 16.1727 131 -0.33 70
IV.EMFO.HHE. 2021-05-06T12:04:53.01 0.1 undecidable manual P 291 6.1938 158 -0.17 98
IV.EMPL.HHZ. 2021-05-06T12:04:53.96 0.6 negative manual P 256 16.7721 129 -0.21 48
IV.EMFS.HHE. 2021-05-06T12:04:53.63 0.3 undecidable manual P 272 13.875 136 -0.21 72
IV.EVRN.HHN. 2021-05-06T12:04:52.84 0.3 undecidable manual P 212 3.3966 168 -0.22 73
IV.ESAL.HHZ. 2021-05-06T12:04:52.98 0.3 undecidable manual P 337 4.7952 163 -0.13 75
Station Magnitude and Amplitude
SCNL mag Generic_amplitude Period Type Category Unit Time_window_reference
IV.ESAL.HHN. ML:1.9 0.0007840000000000001 0.24 AML other m 2021-05-06T12:04:56.12
IV.ESAL.HHE. ML:2.0 0.0010390000000000002 1 AML other m 2021-05-06T12:04:56.38
IV.EFIU.HHN. ML:1.6 0.00033699999999999995 1.1 AML other m 2021-05-06T12:04:57.08
IV.EFIU.HHE. ML:1.7 0.000397 0.6 AML other m 2021-05-06T12:04:57.48
IV.EPOZ.HHN. ML:1.8 0.0005309999999999999 0.48 AML other m 2021-05-06T12:04:58.56
IV.EMPL.HHE. ML:1.9 0.000517 0.16 AML other m 2021-05-06T12:04:58.86
IV.ENIC.HHE. ML:2.0 0.0006525 0.5 AML other m 2021-05-06T12:04:59.33
IV.EMPL.HHN. ML:2.1 0.0009299999999999999 0.18 AML other m 2021-05-06T12:04:59.22
IV.EPIT.HHE. ML:2.0 0.0006625000000000001 0.54 AML other m 2021-05-06T12:04:59.17
IV.EPIT.HHN. ML:2.0 0.0008475000000000001 0.4 AML other m 2021-05-06T12:04:59.71
IV.ENIC.HHN. ML:2.0 0.0007070000000000001 0.62 AML other m 2021-05-06T12:04:59.21
IV.EMSG.HHN. ML:1.8 0.0003255 0.36 AML other m 2021-05-06T12:05:00.22
IV.EPOZ.HHE. ML:1.6 0.00038 0.28 AML other m 2021-05-06T12:05:00.60
IV.EPZF.HHN. ML:1.6 0.000184 1.7 AML other m 2021-05-06T12:05:03.09
IV.EPZF.HHE. ML:1.4 0.0001205 0.34 AML other m 2021-05-06T12:05:04.83
IV.EMSG.HHE. ML:1.7 0.000289 0.22 AML other m 2021-05-06T12:05:04.73
IV.GALF.HHN. ML:1.5 0.00007245 1.16 AML other m 2021-05-06T12:05:10.92
IV.GALF.HHE. ML:1.4 0.00006494999999999999 0.6 AML other m 2021-05-06T12:05:13.66
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